[FFmpeg-cvslog] r16516 - in trunk/libavformat: Makefile options.c utils.c
stefano
subversion
Sat Jan 10 10:56:07 CET 2009
Author: stefano
Date: Sat Jan 10 10:56:07 2009
New Revision: 16516
Log:
Move the AVFormatContext options definition to a dedicated file,
reduce the utils.c clutter.
Added:
trunk/libavformat/options.c (contents, props changed)
- copied, changed from r16508, trunk/libavformat/utils.c
Modified:
trunk/libavformat/Makefile
trunk/libavformat/utils.c
Modified: trunk/libavformat/Makefile
==============================================================================
--- trunk/libavformat/Makefile Sat Jan 10 10:55:55 2009 (r16515)
+++ trunk/libavformat/Makefile Sat Jan 10 10:56:07 2009 (r16516)
@@ -5,7 +5,7 @@ FFLIBS = avcodec avutil
HEADERS = avformat.h avio.h rtsp.h rtspcodes.h
-OBJS = allformats.o cutils.o metadata.o metadata_compat.o os_support.o sdp.o utils.o
+OBJS = allformats.o cutils.o metadata.o metadata_compat.o options.o os_support.o sdp.o utils.o
# muxers/demuxers
OBJS-$(CONFIG_AAC_DEMUXER) += raw.o
Copied and modified: trunk/libavformat/options.c (from r16508, trunk/libavformat/utils.c)
==============================================================================
--- trunk/libavformat/utils.c Fri Jan 9 23:22:40 2009 (r16508, copy source)
+++ trunk/libavformat/options.c Sat Jan 10 10:56:07 2009 (r16516)
@@ -1,5 +1,4 @@
/*
- * various utility functions for use within FFmpeg
* Copyright (c) 2000, 2001, 2002 Fabrice Bellard
*
* This file is part of FFmpeg.
@@ -19,368 +18,13 @@
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
-#include "internal.h"
#include "libavcodec/opt.h"
-#include "metadata.h"
-#include "libavutil/avstring.h"
-#include "riff.h"
-#include <sys/time.h>
-#include <time.h>
-#include <strings.h>
-
-#undef NDEBUG
-#include <assert.h>
-
-/**
- * @file libavformat/utils.c
- * various utility functions for use within FFmpeg
- */
-
-unsigned avformat_version(void)
-{
- return LIBAVFORMAT_VERSION_INT;
-}
-
-/* fraction handling */
-
-/**
- * f = val + (num / den) + 0.5.
- *
- * 'num' is normalized so that it is such as 0 <= num < den.
- *
- * @param f fractional number
- * @param val integer value
- * @param num must be >= 0
- * @param den must be >= 1
- */
-static void av_frac_init(AVFrac *f, int64_t val, int64_t num, int64_t den)
-{
- num += (den >> 1);
- if (num >= den) {
- val += num / den;
- num = num % den;
- }
- f->val = val;
- f->num = num;
- f->den = den;
-}
/**
- * Fractional addition to f: f = f + (incr / f->den).
- *
- * @param f fractional number
- * @param incr increment, can be positive or negative
+ * @file options.c
+ * Options definition for AVFormatContext.
*/
-static void av_frac_add(AVFrac *f, int64_t incr)
-{
- int64_t num, den;
-
- num = f->num + incr;
- den = f->den;
- if (num < 0) {
- f->val += num / den;
- num = num % den;
- if (num < 0) {
- num += den;
- f->val--;
- }
- } else if (num >= den) {
- f->val += num / den;
- num = num % den;
- }
- f->num = num;
-}
-
-/** head of registered input format linked list */
-AVInputFormat *first_iformat = NULL;
-/** head of registered output format linked list */
-AVOutputFormat *first_oformat = NULL;
-
-AVInputFormat *av_iformat_next(AVInputFormat *f)
-{
- if(f) return f->next;
- else return first_iformat;
-}
-
-AVOutputFormat *av_oformat_next(AVOutputFormat *f)
-{
- if(f) return f->next;
- else return first_oformat;
-}
-
-void av_register_input_format(AVInputFormat *format)
-{
- AVInputFormat **p;
- p = &first_iformat;
- while (*p != NULL) p = &(*p)->next;
- *p = format;
- format->next = NULL;
-}
-
-void av_register_output_format(AVOutputFormat *format)
-{
- AVOutputFormat **p;
- p = &first_oformat;
- while (*p != NULL) p = &(*p)->next;
- *p = format;
- format->next = NULL;
-}
-
-int match_ext(const char *filename, const char *extensions)
-{
- const char *ext, *p;
- char ext1[32], *q;
-
- if(!filename)
- return 0;
-
- ext = strrchr(filename, '.');
- if (ext) {
- ext++;
- p = extensions;
- for(;;) {
- q = ext1;
- while (*p != '\0' && *p != ',' && q-ext1<sizeof(ext1)-1)
- *q++ = *p++;
- *q = '\0';
- if (!strcasecmp(ext1, ext))
- return 1;
- if (*p == '\0')
- break;
- p++;
- }
- }
- return 0;
-}
-
-AVOutputFormat *guess_format(const char *short_name, const char *filename,
- const char *mime_type)
-{
- AVOutputFormat *fmt, *fmt_found;
- int score_max, score;
-
- /* specific test for image sequences */
-#ifdef CONFIG_IMAGE2_MUXER
- if (!short_name && filename &&
- av_filename_number_test(filename) &&
- av_guess_image2_codec(filename) != CODEC_ID_NONE) {
- return guess_format("image2", NULL, NULL);
- }
-#endif
- /* Find the proper file type. */
- fmt_found = NULL;
- score_max = 0;
- fmt = first_oformat;
- while (fmt != NULL) {
- score = 0;
- if (fmt->name && short_name && !strcmp(fmt->name, short_name))
- score += 100;
- if (fmt->mime_type && mime_type && !strcmp(fmt->mime_type, mime_type))
- score += 10;
- if (filename && fmt->extensions &&
- match_ext(filename, fmt->extensions)) {
- score += 5;
- }
- if (score > score_max) {
- score_max = score;
- fmt_found = fmt;
- }
- fmt = fmt->next;
- }
- return fmt_found;
-}
-
-AVOutputFormat *guess_stream_format(const char *short_name, const char *filename,
- const char *mime_type)
-{
- AVOutputFormat *fmt = guess_format(short_name, filename, mime_type);
-
- if (fmt) {
- AVOutputFormat *stream_fmt;
- char stream_format_name[64];
-
- snprintf(stream_format_name, sizeof(stream_format_name), "%s_stream", fmt->name);
- stream_fmt = guess_format(stream_format_name, NULL, NULL);
-
- if (stream_fmt)
- fmt = stream_fmt;
- }
-
- return fmt;
-}
-
-enum CodecID av_guess_codec(AVOutputFormat *fmt, const char *short_name,
- const char *filename, const char *mime_type, enum CodecType type){
- if(type == CODEC_TYPE_VIDEO){
- enum CodecID codec_id= CODEC_ID_NONE;
-
-#ifdef CONFIG_IMAGE2_MUXER
- if(!strcmp(fmt->name, "image2") || !strcmp(fmt->name, "image2pipe")){
- codec_id= av_guess_image2_codec(filename);
- }
-#endif
- if(codec_id == CODEC_ID_NONE)
- codec_id= fmt->video_codec;
- return codec_id;
- }else if(type == CODEC_TYPE_AUDIO)
- return fmt->audio_codec;
- else
- return CODEC_ID_NONE;
-}
-
-AVInputFormat *av_find_input_format(const char *short_name)
-{
- AVInputFormat *fmt;
- for(fmt = first_iformat; fmt != NULL; fmt = fmt->next) {
- if (!strcmp(fmt->name, short_name))
- return fmt;
- }
- return NULL;
-}
-
-/* memory handling */
-
-void av_destruct_packet(AVPacket *pkt)
-{
- av_free(pkt->data);
- pkt->data = NULL; pkt->size = 0;
-}
-
-void av_init_packet(AVPacket *pkt)
-{
- pkt->pts = AV_NOPTS_VALUE;
- pkt->dts = AV_NOPTS_VALUE;
- pkt->pos = -1;
- pkt->duration = 0;
- pkt->convergence_duration = 0;
- pkt->flags = 0;
- pkt->stream_index = 0;
- pkt->destruct= av_destruct_packet_nofree;
-}
-
-int av_new_packet(AVPacket *pkt, int size)
-{
- uint8_t *data;
- if((unsigned)size > (unsigned)size + FF_INPUT_BUFFER_PADDING_SIZE)
- return AVERROR(ENOMEM);
- data = av_malloc(size + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!data)
- return AVERROR(ENOMEM);
- memset(data + size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
-
- av_init_packet(pkt);
- pkt->data = data;
- pkt->size = size;
- pkt->destruct = av_destruct_packet;
- return 0;
-}
-
-int av_get_packet(ByteIOContext *s, AVPacket *pkt, int size)
-{
- int ret= av_new_packet(pkt, size);
-
- if(ret<0)
- return ret;
-
- pkt->pos= url_ftell(s);
-
- ret= get_buffer(s, pkt->data, size);
- if(ret<=0)
- av_free_packet(pkt);
- else
- pkt->size= ret;
-
- return ret;
-}
-
-int av_dup_packet(AVPacket *pkt)
-{
- if (((pkt->destruct == av_destruct_packet_nofree) || (pkt->destruct == NULL)) && pkt->data) {
- uint8_t *data;
- /* We duplicate the packet and don't forget to add the padding again. */
- if((unsigned)pkt->size > (unsigned)pkt->size + FF_INPUT_BUFFER_PADDING_SIZE)
- return AVERROR(ENOMEM);
- data = av_malloc(pkt->size + FF_INPUT_BUFFER_PADDING_SIZE);
- if (!data) {
- return AVERROR(ENOMEM);
- }
- memcpy(data, pkt->data, pkt->size);
- memset(data + pkt->size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
- pkt->data = data;
- pkt->destruct = av_destruct_packet;
- }
- return 0;
-}
-
-int av_filename_number_test(const char *filename)
-{
- char buf[1024];
- return filename && (av_get_frame_filename(buf, sizeof(buf), filename, 1)>=0);
-}
-static AVInputFormat *av_probe_input_format2(AVProbeData *pd, int is_opened, int *score_max)
-{
- AVInputFormat *fmt1, *fmt;
- int score;
-
- fmt = NULL;
- for(fmt1 = first_iformat; fmt1 != NULL; fmt1 = fmt1->next) {
- if (!is_opened == !(fmt1->flags & AVFMT_NOFILE))
- continue;
- score = 0;
- if (fmt1->read_probe) {
- score = fmt1->read_probe(pd);
- } else if (fmt1->extensions) {
- if (match_ext(pd->filename, fmt1->extensions)) {
- score = 50;
- }
- }
- if (score > *score_max) {
- *score_max = score;
- fmt = fmt1;
- }else if (score == *score_max)
- fmt = NULL;
- }
- return fmt;
-}
-
-AVInputFormat *av_probe_input_format(AVProbeData *pd, int is_opened){
- int score=0;
- return av_probe_input_format2(pd, is_opened, &score);
-}
-
-static int set_codec_from_probe_data(AVStream *st, AVProbeData *pd, int score)
-{
- AVInputFormat *fmt;
- fmt = av_probe_input_format2(pd, 1, &score);
-
- if (fmt) {
- if (!strcmp(fmt->name, "mp3")) {
- st->codec->codec_id = CODEC_ID_MP3;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- } else if (!strcmp(fmt->name, "ac3")) {
- st->codec->codec_id = CODEC_ID_AC3;
- st->codec->codec_type = CODEC_TYPE_AUDIO;
- } else if (!strcmp(fmt->name, "mpegvideo")) {
- st->codec->codec_id = CODEC_ID_MPEG2VIDEO;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- } else if (!strcmp(fmt->name, "m4v")) {
- st->codec->codec_id = CODEC_ID_MPEG4;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- } else if (!strcmp(fmt->name, "h264")) {
- st->codec->codec_id = CODEC_ID_H264;
- st->codec->codec_type = CODEC_TYPE_VIDEO;
- }
- }
- return !!fmt;
-}
-
-/************************************************************/
-/* input media file */
-
-/**
- * Open a media file from an IO stream. 'fmt' must be specified.
- */
static const char* format_to_name(void* ptr)
{
AVFormatContext* fc = (AVFormatContext*) ptr;
@@ -437,2823 +81,3 @@ AVFormatContext *av_alloc_format_context
ic->av_class = &av_format_context_class;
return ic;
}
-
-int av_open_input_stream(AVFormatContext **ic_ptr,
- ByteIOContext *pb, const char *filename,
- AVInputFormat *fmt, AVFormatParameters *ap)
-{
- int err;
- AVFormatContext *ic;
- AVFormatParameters default_ap;
-
- if(!ap){
- ap=&default_ap;
- memset(ap, 0, sizeof(default_ap));
- }
-
- if(!ap->prealloced_context)
- ic = av_alloc_format_context();
- else
- ic = *ic_ptr;
- if (!ic) {
- err = AVERROR(ENOMEM);
- goto fail;
- }
- ic->iformat = fmt;
- ic->pb = pb;
- ic->duration = AV_NOPTS_VALUE;
- ic->start_time = AV_NOPTS_VALUE;
- av_strlcpy(ic->filename, filename, sizeof(ic->filename));
-
- /* allocate private data */
- if (fmt->priv_data_size > 0) {
- ic->priv_data = av_mallocz(fmt->priv_data_size);
- if (!ic->priv_data) {
- err = AVERROR(ENOMEM);
- goto fail;
- }
- } else {
- ic->priv_data = NULL;
- }
-
- if (ic->iformat->read_header) {
- err = ic->iformat->read_header(ic, ap);
- if (err < 0)
- goto fail;
- }
-
- if (pb && !ic->data_offset)
- ic->data_offset = url_ftell(ic->pb);
-
-#if LIBAVFORMAT_VERSION_MAJOR < 53
- ff_metadata_demux_compat(ic);
-#endif
-
- *ic_ptr = ic;
- return 0;
- fail:
- if (ic) {
- int i;
- av_freep(&ic->priv_data);
- for(i=0;i<ic->nb_streams;i++) {
- AVStream *st = ic->streams[i];
- if (st) {
- av_free(st->priv_data);
- av_free(st->codec->extradata);
- }
- av_free(st);
- }
- }
- av_free(ic);
- *ic_ptr = NULL;
- return err;
-}
-
-/** size of probe buffer, for guessing file type from file contents */
-#define PROBE_BUF_MIN 2048
-#define PROBE_BUF_MAX (1<<20)
-
-int av_open_input_file(AVFormatContext **ic_ptr, const char *filename,
- AVInputFormat *fmt,
- int buf_size,
- AVFormatParameters *ap)
-{
- int err, probe_size;
- AVProbeData probe_data, *pd = &probe_data;
- ByteIOContext *pb = NULL;
-
- pd->filename = "";
- if (filename)
- pd->filename = filename;
- pd->buf = NULL;
- pd->buf_size = 0;
-
- if (!fmt) {
- /* guess format if no file can be opened */
- fmt = av_probe_input_format(pd, 0);
- }
-
- /* Do not open file if the format does not need it. XXX: specific
- hack needed to handle RTSP/TCP */
- if (!fmt || !(fmt->flags & AVFMT_NOFILE)) {
- /* if no file needed do not try to open one */
- if ((err=url_fopen(&pb, filename, URL_RDONLY)) < 0) {
- goto fail;
- }
- if (buf_size > 0) {
- url_setbufsize(pb, buf_size);
- }
-
- for(probe_size= PROBE_BUF_MIN; probe_size<=PROBE_BUF_MAX && !fmt; probe_size<<=1){
- int score= probe_size < PROBE_BUF_MAX ? AVPROBE_SCORE_MAX/4 : 0;
- /* read probe data */
- pd->buf= av_realloc(pd->buf, probe_size + AVPROBE_PADDING_SIZE);
- pd->buf_size = get_buffer(pb, pd->buf, probe_size);
- memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
- if (url_fseek(pb, 0, SEEK_SET) < 0) {
- url_fclose(pb);
- if (url_fopen(&pb, filename, URL_RDONLY) < 0) {
- pb = NULL;
- err = AVERROR(EIO);
- goto fail;
- }
- }
- /* guess file format */
- fmt = av_probe_input_format2(pd, 1, &score);
- }
- av_freep(&pd->buf);
- }
-
- /* if still no format found, error */
- if (!fmt) {
- err = AVERROR_NOFMT;
- goto fail;
- }
-
- /* check filename in case an image number is expected */
- if (fmt->flags & AVFMT_NEEDNUMBER) {
- if (!av_filename_number_test(filename)) {
- err = AVERROR_NUMEXPECTED;
- goto fail;
- }
- }
- err = av_open_input_stream(ic_ptr, pb, filename, fmt, ap);
- if (err)
- goto fail;
- return 0;
- fail:
- av_freep(&pd->buf);
- if (pb)
- url_fclose(pb);
- *ic_ptr = NULL;
- return err;
-
-}
-
-/*******************************************************/
-
-static AVPacket *add_to_pktbuf(AVPacketList **packet_buffer, AVPacket *pkt,
- AVPacketList **plast_pktl){
- AVPacketList *pktl = av_mallocz(sizeof(AVPacketList));
- if (!pktl)
- return NULL;
-
- if (*packet_buffer)
- (*plast_pktl)->next = pktl;
- else
- *packet_buffer = pktl;
-
- /* add the packet in the buffered packet list */
- *plast_pktl = pktl;
- pktl->pkt= *pkt;
- return &pktl->pkt;
-}
-
-int av_read_packet(AVFormatContext *s, AVPacket *pkt)
-{
- int ret;
- AVStream *st;
-
- for(;;){
- AVPacketList *pktl = s->raw_packet_buffer;
-
- if (pktl) {
- *pkt = pktl->pkt;
- if(s->streams[pkt->stream_index]->codec->codec_id != CODEC_ID_PROBE){
- s->raw_packet_buffer = pktl->next;
- av_free(pktl);
- return 0;
- }
- }
-
- av_init_packet(pkt);
- ret= s->iformat->read_packet(s, pkt);
- if (ret < 0)
- return ret;
- st= s->streams[pkt->stream_index];
-
- switch(st->codec->codec_type){
- case CODEC_TYPE_VIDEO:
- if(s->video_codec_id) st->codec->codec_id= s->video_codec_id;
- break;
- case CODEC_TYPE_AUDIO:
- if(s->audio_codec_id) st->codec->codec_id= s->audio_codec_id;
- break;
- case CODEC_TYPE_SUBTITLE:
- if(s->subtitle_codec_id)st->codec->codec_id= s->subtitle_codec_id;
- break;
- }
-
- if(!pktl && st->codec->codec_id!=CODEC_ID_PROBE)
- return ret;
-
- add_to_pktbuf(&s->raw_packet_buffer, pkt, &s->raw_packet_buffer_end);
-
- if(st->codec->codec_id == CODEC_ID_PROBE){
- AVProbeData *pd = &st->probe_data;
-
- pd->buf = av_realloc(pd->buf, pd->buf_size+pkt->size+AVPROBE_PADDING_SIZE);
- memcpy(pd->buf+pd->buf_size, pkt->data, pkt->size);
- pd->buf_size += pkt->size;
- memset(pd->buf+pd->buf_size, 0, AVPROBE_PADDING_SIZE);
-
- if(av_log2(pd->buf_size) != av_log2(pd->buf_size - pkt->size)){
- set_codec_from_probe_data(st, pd, 1);
- if(st->codec->codec_id != CODEC_ID_PROBE){
- pd->buf_size=0;
- av_freep(&pd->buf);
- }
- }
- }
- }
-}
-
-/**********************************************************/
-
-/**
- * Get the number of samples of an audio frame. Return -1 on error.
- */
-static int get_audio_frame_size(AVCodecContext *enc, int size)
-{
- int frame_size;
-
- if(enc->codec_id == CODEC_ID_VORBIS)
- return -1;
-
- if (enc->frame_size <= 1) {
- int bits_per_sample = av_get_bits_per_sample(enc->codec_id);
-
- if (bits_per_sample) {
- if (enc->channels == 0)
- return -1;
- frame_size = (size << 3) / (bits_per_sample * enc->channels);
- } else {
- /* used for example by ADPCM codecs */
- if (enc->bit_rate == 0)
- return -1;
- frame_size = (size * 8 * enc->sample_rate) / enc->bit_rate;
- }
- } else {
- frame_size = enc->frame_size;
- }
- return frame_size;
-}
-
-
-/**
- * Return the frame duration in seconds. Return 0 if not available.
- */
-static void compute_frame_duration(int *pnum, int *pden, AVStream *st,
- AVCodecParserContext *pc, AVPacket *pkt)
-{
- int frame_size;
-
- *pnum = 0;
- *pden = 0;
- switch(st->codec->codec_type) {
- case CODEC_TYPE_VIDEO:
- if(st->time_base.num*1000LL > st->time_base.den){
- *pnum = st->time_base.num;
- *pden = st->time_base.den;
- }else if(st->codec->time_base.num*1000LL > st->codec->time_base.den){
- *pnum = st->codec->time_base.num;
- *pden = st->codec->time_base.den;
- if (pc && pc->repeat_pict) {
- *pden *= 2;
- *pnum = (*pnum) * (2 + pc->repeat_pict);
- }
- }
- break;
- case CODEC_TYPE_AUDIO:
- frame_size = get_audio_frame_size(st->codec, pkt->size);
- if (frame_size < 0)
- break;
- *pnum = frame_size;
- *pden = st->codec->sample_rate;
- break;
- default:
- break;
- }
-}
-
-static int is_intra_only(AVCodecContext *enc){
- if(enc->codec_type == CODEC_TYPE_AUDIO){
- return 1;
- }else if(enc->codec_type == CODEC_TYPE_VIDEO){
- switch(enc->codec_id){
- case CODEC_ID_MJPEG:
- case CODEC_ID_MJPEGB:
- case CODEC_ID_LJPEG:
- case CODEC_ID_RAWVIDEO:
- case CODEC_ID_DVVIDEO:
- case CODEC_ID_HUFFYUV:
- case CODEC_ID_FFVHUFF:
- case CODEC_ID_ASV1:
- case CODEC_ID_ASV2:
- case CODEC_ID_VCR1:
- case CODEC_ID_DNXHD:
- return 1;
- default: break;
- }
- }
- return 0;
-}
-
-static void update_initial_timestamps(AVFormatContext *s, int stream_index,
- int64_t dts, int64_t pts)
-{
- AVStream *st= s->streams[stream_index];
- AVPacketList *pktl= s->packet_buffer;
-
- if(st->first_dts != AV_NOPTS_VALUE || dts == AV_NOPTS_VALUE || st->cur_dts == AV_NOPTS_VALUE)
- return;
-
- st->first_dts= dts - st->cur_dts;
- st->cur_dts= dts;
-
- for(; pktl; pktl= pktl->next){
- if(pktl->pkt.stream_index != stream_index)
- continue;
- //FIXME think more about this check
- if(pktl->pkt.pts != AV_NOPTS_VALUE && pktl->pkt.pts == pktl->pkt.dts)
- pktl->pkt.pts += st->first_dts;
-
- if(pktl->pkt.dts != AV_NOPTS_VALUE)
- pktl->pkt.dts += st->first_dts;
-
- if(st->start_time == AV_NOPTS_VALUE && pktl->pkt.pts != AV_NOPTS_VALUE)
- st->start_time= pktl->pkt.pts;
- }
- if (st->start_time == AV_NOPTS_VALUE)
- st->start_time = pts;
-}
-
-static void update_initial_durations(AVFormatContext *s, AVStream *st, AVPacket *pkt)
-{
- AVPacketList *pktl= s->packet_buffer;
- int64_t cur_dts= 0;
-
- if(st->first_dts != AV_NOPTS_VALUE){
- cur_dts= st->first_dts;
- for(; pktl; pktl= pktl->next){
- if(pktl->pkt.stream_index == pkt->stream_index){
- if(pktl->pkt.pts != pktl->pkt.dts || pktl->pkt.dts != AV_NOPTS_VALUE || pktl->pkt.duration)
- break;
- cur_dts -= pkt->duration;
- }
- }
- pktl= s->packet_buffer;
- st->first_dts = cur_dts;
- }else if(st->cur_dts)
- return;
-
- for(; pktl; pktl= pktl->next){
- if(pktl->pkt.stream_index != pkt->stream_index)
- continue;
- if(pktl->pkt.pts == pktl->pkt.dts && pktl->pkt.dts == AV_NOPTS_VALUE
- && !pktl->pkt.duration){
- pktl->pkt.dts= cur_dts;
- if(!st->codec->has_b_frames)
- pktl->pkt.pts= cur_dts;
- cur_dts += pkt->duration;
- pktl->pkt.duration= pkt->duration;
- }else
- break;
- }
- if(st->first_dts == AV_NOPTS_VALUE)
- st->cur_dts= cur_dts;
-}
-
-static void compute_pkt_fields(AVFormatContext *s, AVStream *st,
- AVCodecParserContext *pc, AVPacket *pkt)
-{
- int num, den, presentation_delayed, delay, i;
- int64_t offset;
-
- /* do we have a video B-frame ? */
- delay= st->codec->has_b_frames;
- presentation_delayed = 0;
- /* XXX: need has_b_frame, but cannot get it if the codec is
- not initialized */
- if (delay &&
- pc && pc->pict_type != FF_B_TYPE)
- presentation_delayed = 1;
-
- if(pkt->pts != AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && pkt->dts > pkt->pts && st->pts_wrap_bits<63
- /*&& pkt->dts-(1LL<<st->pts_wrap_bits) < pkt->pts*/){
- pkt->dts -= 1LL<<st->pts_wrap_bits;
- }
-
- // some mpeg2 in mpeg-ps lack dts (issue171 / input_file.mpg)
- // we take the conservative approach and discard both
- // Note, if this is misbehaving for a H.264 file then possibly presentation_delayed is not set correctly.
- if(delay==1 && pkt->dts == pkt->pts && pkt->dts != AV_NOPTS_VALUE && presentation_delayed){
- av_log(s, AV_LOG_ERROR, "invalid dts/pts combination\n");
- pkt->dts= pkt->pts= AV_NOPTS_VALUE;
- }
-
- if (pkt->duration == 0) {
- compute_frame_duration(&num, &den, st, pc, pkt);
- if (den && num) {
- pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
-
- if(pkt->duration != 0 && s->packet_buffer)
- update_initial_durations(s, st, pkt);
- }
- }
-
- /* correct timestamps with byte offset if demuxers only have timestamps
- on packet boundaries */
- if(pc && st->need_parsing == AVSTREAM_PARSE_TIMESTAMPS && pkt->size){
- /* this will estimate bitrate based on this frame's duration and size */
- offset = av_rescale(pc->offset, pkt->duration, pkt->size);
- if(pkt->pts != AV_NOPTS_VALUE)
- pkt->pts += offset;
- if(pkt->dts != AV_NOPTS_VALUE)
- pkt->dts += offset;
- }
-
- /* This may be redundant, but it should not hurt. */
- if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts > pkt->dts)
- presentation_delayed = 1;
-
-// av_log(NULL, AV_LOG_DEBUG, "IN delayed:%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64" st:%d pc:%p\n", presentation_delayed, pkt->pts, pkt->dts, st->cur_dts, pkt->stream_index, pc);
- /* interpolate PTS and DTS if they are not present */
- if(delay==0 || (delay==1 && pc)){
- if (presentation_delayed) {
- /* DTS = decompression timestamp */
- /* PTS = presentation timestamp */
- if (pkt->dts == AV_NOPTS_VALUE)
- pkt->dts = st->last_IP_pts;
- update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts);
- if (pkt->dts == AV_NOPTS_VALUE)
- pkt->dts = st->cur_dts;
-
- /* this is tricky: the dts must be incremented by the duration
- of the frame we are displaying, i.e. the last I- or P-frame */
- if (st->last_IP_duration == 0)
- st->last_IP_duration = pkt->duration;
- if(pkt->dts != AV_NOPTS_VALUE)
- st->cur_dts = pkt->dts + st->last_IP_duration;
- st->last_IP_duration = pkt->duration;
- st->last_IP_pts= pkt->pts;
- /* cannot compute PTS if not present (we can compute it only
- by knowing the future */
- } else if(pkt->pts != AV_NOPTS_VALUE || pkt->dts != AV_NOPTS_VALUE || pkt->duration){
- if(pkt->pts != AV_NOPTS_VALUE && pkt->duration){
- int64_t old_diff= FFABS(st->cur_dts - pkt->duration - pkt->pts);
- int64_t new_diff= FFABS(st->cur_dts - pkt->pts);
- if(old_diff < new_diff && old_diff < (pkt->duration>>3)){
- pkt->pts += pkt->duration;
- // av_log(NULL, AV_LOG_DEBUG, "id:%d old:%"PRId64" new:%"PRId64" dur:%d cur:%"PRId64" size:%d\n", pkt->stream_index, old_diff, new_diff, pkt->duration, st->cur_dts, pkt->size);
- }
- }
-
- /* presentation is not delayed : PTS and DTS are the same */
- if(pkt->pts == AV_NOPTS_VALUE)
- pkt->pts = pkt->dts;
- update_initial_timestamps(s, pkt->stream_index, pkt->pts, pkt->pts);
- if(pkt->pts == AV_NOPTS_VALUE)
- pkt->pts = st->cur_dts;
- pkt->dts = pkt->pts;
- if(pkt->pts != AV_NOPTS_VALUE)
- st->cur_dts = pkt->pts + pkt->duration;
- }
- }
-
- if(pkt->pts != AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
- st->pts_buffer[0]= pkt->pts;
- for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
- FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
- if(pkt->dts == AV_NOPTS_VALUE)
- pkt->dts= st->pts_buffer[0];
- if(delay>1){
- update_initial_timestamps(s, pkt->stream_index, pkt->dts, pkt->pts); // this should happen on the first packet
- }
- if(pkt->dts > st->cur_dts)
- st->cur_dts = pkt->dts;
- }
-
-// av_log(NULL, AV_LOG_ERROR, "OUTdelayed:%d/%d pts:%"PRId64", dts:%"PRId64" cur_dts:%"PRId64"\n", presentation_delayed, delay, pkt->pts, pkt->dts, st->cur_dts);
-
- /* update flags */
- if(is_intra_only(st->codec))
- pkt->flags |= PKT_FLAG_KEY;
- else if (pc) {
- pkt->flags = 0;
- /* keyframe computation */
- if (pc->pict_type == FF_I_TYPE)
- pkt->flags |= PKT_FLAG_KEY;
- }
-}
-
-void av_destruct_packet_nofree(AVPacket *pkt)
-{
- pkt->data = NULL; pkt->size = 0;
-}
-
-static int av_read_frame_internal(AVFormatContext *s, AVPacket *pkt)
-{
- AVStream *st;
- int len, ret, i;
-
- av_init_packet(pkt);
-
- for(;;) {
- /* select current input stream component */
- st = s->cur_st;
- if (st) {
- if (!st->need_parsing || !st->parser) {
- /* no parsing needed: we just output the packet as is */
- /* raw data support */
- *pkt = s->cur_pkt;
- compute_pkt_fields(s, st, NULL, pkt);
- s->cur_st = NULL;
- break;
- } else if (s->cur_len > 0 && st->discard < AVDISCARD_ALL) {
- len = av_parser_parse(st->parser, st->codec, &pkt->data, &pkt->size,
- s->cur_ptr, s->cur_len,
- s->cur_pkt.pts, s->cur_pkt.dts);
- s->cur_pkt.pts = AV_NOPTS_VALUE;
- s->cur_pkt.dts = AV_NOPTS_VALUE;
- /* increment read pointer */
- s->cur_ptr += len;
- s->cur_len -= len;
-
- /* return packet if any */
- if (pkt->size) {
- got_packet:
- pkt->pos = s->cur_pkt.pos; // Isn't quite accurate but close.
- pkt->duration = 0;
- pkt->stream_index = st->index;
- pkt->pts = st->parser->pts;
- pkt->dts = st->parser->dts;
- pkt->destruct = av_destruct_packet_nofree;
- compute_pkt_fields(s, st, st->parser, pkt);
-
- if((s->iformat->flags & AVFMT_GENERIC_INDEX) && pkt->flags & PKT_FLAG_KEY){
- ff_reduce_index(s, st->index);
- av_add_index_entry(st, st->parser->frame_offset, pkt->dts,
- 0, 0, AVINDEX_KEYFRAME);
- }
-
- break;
- }
- } else {
- /* free packet */
- av_free_packet(&s->cur_pkt);
- s->cur_st = NULL;
- }
- } else {
- /* read next packet */
- ret = av_read_packet(s, &s->cur_pkt);
- if (ret < 0) {
- if (ret == AVERROR(EAGAIN))
- return ret;
- /* return the last frames, if any */
- for(i = 0; i < s->nb_streams; i++) {
- st = s->streams[i];
- if (st->parser && st->need_parsing) {
- av_parser_parse(st->parser, st->codec,
- &pkt->data, &pkt->size,
- NULL, 0,
- AV_NOPTS_VALUE, AV_NOPTS_VALUE);
- if (pkt->size)
- goto got_packet;
- }
- }
- /* no more packets: really terminate parsing */
- return ret;
- }
-
- if(s->cur_pkt.pts != AV_NOPTS_VALUE &&
- s->cur_pkt.dts != AV_NOPTS_VALUE &&
- s->cur_pkt.pts < s->cur_pkt.dts){
- av_log(s, AV_LOG_WARNING, "Invalid timestamps stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d\n",
- s->cur_pkt.stream_index,
- s->cur_pkt.pts,
- s->cur_pkt.dts,
- s->cur_pkt.size);
-// av_free_packet(&s->cur_pkt);
-// return -1;
- }
-
- st = s->streams[s->cur_pkt.stream_index];
- if(s->debug & FF_FDEBUG_TS)
- av_log(s, AV_LOG_DEBUG, "av_read_packet stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, flags=%d\n",
- s->cur_pkt.stream_index,
- s->cur_pkt.pts,
- s->cur_pkt.dts,
- s->cur_pkt.size,
- s->cur_pkt.flags);
-
- s->cur_st = st;
- s->cur_ptr = s->cur_pkt.data;
- s->cur_len = s->cur_pkt.size;
- if (st->need_parsing && !st->parser) {
- st->parser = av_parser_init(st->codec->codec_id);
- if (!st->parser) {
- /* no parser available: just output the raw packets */
- st->need_parsing = AVSTREAM_PARSE_NONE;
- }else if(st->need_parsing == AVSTREAM_PARSE_HEADERS){
- st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
- }
- if(st->parser && (s->iformat->flags & AVFMT_GENERIC_INDEX)){
- st->parser->next_frame_offset=
- st->parser->cur_offset= s->cur_pkt.pos;
- }
- }
- }
- }
- if(s->debug & FF_FDEBUG_TS)
- av_log(s, AV_LOG_DEBUG, "av_read_frame_internal stream=%d, pts=%"PRId64", dts=%"PRId64", size=%d, flags=%d\n",
- pkt->stream_index,
- pkt->pts,
- pkt->dts,
- pkt->size,
- pkt->flags);
-
- return 0;
-}
-
-int av_read_frame(AVFormatContext *s, AVPacket *pkt)
-{
- AVPacketList *pktl;
- int eof=0;
- const int genpts= s->flags & AVFMT_FLAG_GENPTS;
-
- for(;;){
- pktl = s->packet_buffer;
- if (pktl) {
- AVPacket *next_pkt= &pktl->pkt;
-
- if(genpts && next_pkt->dts != AV_NOPTS_VALUE){
- while(pktl && next_pkt->pts == AV_NOPTS_VALUE){
- if( pktl->pkt.stream_index == next_pkt->stream_index
- && next_pkt->dts < pktl->pkt.dts
- && pktl->pkt.pts != pktl->pkt.dts //not b frame
- /*&& pktl->pkt.dts != AV_NOPTS_VALUE*/){
- next_pkt->pts= pktl->pkt.dts;
- }
- pktl= pktl->next;
- }
- pktl = s->packet_buffer;
- }
-
- if( next_pkt->pts != AV_NOPTS_VALUE
- || next_pkt->dts == AV_NOPTS_VALUE
- || !genpts || eof){
- /* read packet from packet buffer, if there is data */
- *pkt = *next_pkt;
- s->packet_buffer = pktl->next;
- av_free(pktl);
- return 0;
- }
- }
- if(genpts){
- int ret= av_read_frame_internal(s, pkt);
- if(ret<0){
- if(pktl && ret != AVERROR(EAGAIN)){
- eof=1;
- continue;
- }else
- return ret;
- }
-
- if(av_dup_packet(add_to_pktbuf(&s->packet_buffer, pkt,
- &s->packet_buffer_end)) < 0)
- return AVERROR(ENOMEM);
- }else{
- assert(!s->packet_buffer);
- return av_read_frame_internal(s, pkt);
- }
- }
-}
-
-/* XXX: suppress the packet queue */
-static void flush_packet_queue(AVFormatContext *s)
-{
- AVPacketList *pktl;
-
- for(;;) {
- pktl = s->packet_buffer;
- if (!pktl)
- break;
- s->packet_buffer = pktl->next;
- av_free_packet(&pktl->pkt);
- av_free(pktl);
- }
-}
-
-/*******************************************************/
-/* seek support */
-
-int av_find_default_stream_index(AVFormatContext *s)
-{
- int first_audio_index = -1;
- int i;
- AVStream *st;
-
- if (s->nb_streams <= 0)
- return -1;
- for(i = 0; i < s->nb_streams; i++) {
- st = s->streams[i];
- if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- return i;
- }
- if (first_audio_index < 0 && st->codec->codec_type == CODEC_TYPE_AUDIO)
- first_audio_index = i;
- }
- return first_audio_index >= 0 ? first_audio_index : 0;
-}
-
-/**
- * Flush the frame reader.
- */
-static void av_read_frame_flush(AVFormatContext *s)
-{
- AVStream *st;
- int i;
-
- flush_packet_queue(s);
-
- /* free previous packet */
- if (s->cur_st) {
- if (s->cur_st->parser)
- av_free_packet(&s->cur_pkt);
- s->cur_st = NULL;
- }
- /* fail safe */
- s->cur_ptr = NULL;
- s->cur_len = 0;
-
- /* for each stream, reset read state */
- for(i = 0; i < s->nb_streams; i++) {
- st = s->streams[i];
-
- if (st->parser) {
- av_parser_close(st->parser);
- st->parser = NULL;
- }
- st->last_IP_pts = AV_NOPTS_VALUE;
- st->cur_dts = AV_NOPTS_VALUE; /* we set the current DTS to an unspecified origin */
- }
-}
-
-void av_update_cur_dts(AVFormatContext *s, AVStream *ref_st, int64_t timestamp){
- int i;
-
- for(i = 0; i < s->nb_streams; i++) {
- AVStream *st = s->streams[i];
-
- st->cur_dts = av_rescale(timestamp,
- st->time_base.den * (int64_t)ref_st->time_base.num,
- st->time_base.num * (int64_t)ref_st->time_base.den);
- }
-}
-
-void ff_reduce_index(AVFormatContext *s, int stream_index)
-{
- AVStream *st= s->streams[stream_index];
- unsigned int max_entries= s->max_index_size / sizeof(AVIndexEntry);
-
- if((unsigned)st->nb_index_entries >= max_entries){
- int i;
- for(i=0; 2*i<st->nb_index_entries; i++)
- st->index_entries[i]= st->index_entries[2*i];
- st->nb_index_entries= i;
- }
-}
-
-int av_add_index_entry(AVStream *st,
- int64_t pos, int64_t timestamp, int size, int distance, int flags)
-{
- AVIndexEntry *entries, *ie;
- int index;
-
- if((unsigned)st->nb_index_entries + 1 >= UINT_MAX / sizeof(AVIndexEntry))
- return -1;
-
- entries = av_fast_realloc(st->index_entries,
- &st->index_entries_allocated_size,
- (st->nb_index_entries + 1) *
- sizeof(AVIndexEntry));
- if(!entries)
- return -1;
-
- st->index_entries= entries;
-
- index= av_index_search_timestamp(st, timestamp, AVSEEK_FLAG_ANY);
-
- if(index<0){
- index= st->nb_index_entries++;
- ie= &entries[index];
- assert(index==0 || ie[-1].timestamp < timestamp);
- }else{
- ie= &entries[index];
- if(ie->timestamp != timestamp){
- if(ie->timestamp <= timestamp)
- return -1;
- memmove(entries + index + 1, entries + index, sizeof(AVIndexEntry)*(st->nb_index_entries - index));
- st->nb_index_entries++;
- }else if(ie->pos == pos && distance < ie->min_distance) //do not reduce the distance
- distance= ie->min_distance;
- }
-
- ie->pos = pos;
- ie->timestamp = timestamp;
- ie->min_distance= distance;
- ie->size= size;
- ie->flags = flags;
-
- return index;
-}
-
-int av_index_search_timestamp(AVStream *st, int64_t wanted_timestamp,
- int flags)
-{
- AVIndexEntry *entries= st->index_entries;
- int nb_entries= st->nb_index_entries;
- int a, b, m;
- int64_t timestamp;
-
- a = - 1;
- b = nb_entries;
-
- while (b - a > 1) {
- m = (a + b) >> 1;
- timestamp = entries[m].timestamp;
- if(timestamp >= wanted_timestamp)
- b = m;
- if(timestamp <= wanted_timestamp)
- a = m;
- }
- m= (flags & AVSEEK_FLAG_BACKWARD) ? a : b;
-
- if(!(flags & AVSEEK_FLAG_ANY)){
- while(m>=0 && m<nb_entries && !(entries[m].flags & AVINDEX_KEYFRAME)){
- m += (flags & AVSEEK_FLAG_BACKWARD) ? -1 : 1;
- }
- }
-
- if(m == nb_entries)
- return -1;
- return m;
-}
-
-#define DEBUG_SEEK
-
-int av_seek_frame_binary(AVFormatContext *s, int stream_index, int64_t target_ts, int flags){
- AVInputFormat *avif= s->iformat;
- int64_t pos_min, pos_max, pos, pos_limit;
- int64_t ts_min, ts_max, ts;
- int index;
- AVStream *st;
-
- if (stream_index < 0)
- return -1;
-
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_DEBUG, "read_seek: %d %"PRId64"\n", stream_index, target_ts);
-#endif
-
- ts_max=
- ts_min= AV_NOPTS_VALUE;
- pos_limit= -1; //gcc falsely says it may be uninitialized
-
- st= s->streams[stream_index];
- if(st->index_entries){
- AVIndexEntry *e;
-
- index= av_index_search_timestamp(st, target_ts, flags | AVSEEK_FLAG_BACKWARD); //FIXME whole func must be checked for non-keyframe entries in index case, especially read_timestamp()
- index= FFMAX(index, 0);
- e= &st->index_entries[index];
-
- if(e->timestamp <= target_ts || e->pos == e->min_distance){
- pos_min= e->pos;
- ts_min= e->timestamp;
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_DEBUG, "using cached pos_min=0x%"PRIx64" dts_min=%"PRId64"\n",
- pos_min,ts_min);
-#endif
- }else{
- assert(index==0);
- }
-
- index= av_index_search_timestamp(st, target_ts, flags & ~AVSEEK_FLAG_BACKWARD);
- assert(index < st->nb_index_entries);
- if(index >= 0){
- e= &st->index_entries[index];
- assert(e->timestamp >= target_ts);
- pos_max= e->pos;
- ts_max= e->timestamp;
- pos_limit= pos_max - e->min_distance;
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_DEBUG, "using cached pos_max=0x%"PRIx64" pos_limit=0x%"PRIx64" dts_max=%"PRId64"\n",
- pos_max,pos_limit, ts_max);
-#endif
- }
- }
-
- pos= av_gen_search(s, stream_index, target_ts, pos_min, pos_max, pos_limit, ts_min, ts_max, flags, &ts, avif->read_timestamp);
- if(pos<0)
- return -1;
-
- /* do the seek */
- url_fseek(s->pb, pos, SEEK_SET);
-
- av_update_cur_dts(s, st, ts);
-
- return 0;
-}
-
-int64_t av_gen_search(AVFormatContext *s, int stream_index, int64_t target_ts, int64_t pos_min, int64_t pos_max, int64_t pos_limit, int64_t ts_min, int64_t ts_max, int flags, int64_t *ts_ret, int64_t (*read_timestamp)(struct AVFormatContext *, int , int64_t *, int64_t )){
- int64_t pos, ts;
- int64_t start_pos, filesize;
- int no_change;
-
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_DEBUG, "gen_seek: %d %"PRId64"\n", stream_index, target_ts);
-#endif
-
- if(ts_min == AV_NOPTS_VALUE){
- pos_min = s->data_offset;
- ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
- if (ts_min == AV_NOPTS_VALUE)
- return -1;
- }
-
- if(ts_max == AV_NOPTS_VALUE){
- int step= 1024;
- filesize = url_fsize(s->pb);
- pos_max = filesize - 1;
- do{
- pos_max -= step;
- ts_max = read_timestamp(s, stream_index, &pos_max, pos_max + step);
- step += step;
- }while(ts_max == AV_NOPTS_VALUE && pos_max >= step);
- if (ts_max == AV_NOPTS_VALUE)
- return -1;
-
- for(;;){
- int64_t tmp_pos= pos_max + 1;
- int64_t tmp_ts= read_timestamp(s, stream_index, &tmp_pos, INT64_MAX);
- if(tmp_ts == AV_NOPTS_VALUE)
- break;
- ts_max= tmp_ts;
- pos_max= tmp_pos;
- if(tmp_pos >= filesize)
- break;
- }
- pos_limit= pos_max;
- }
-
- if(ts_min > ts_max){
- return -1;
- }else if(ts_min == ts_max){
- pos_limit= pos_min;
- }
-
- no_change=0;
- while (pos_min < pos_limit) {
-#ifdef DEBUG_SEEK
- av_log(s, AV_LOG_DEBUG, "pos_min=0x%"PRIx64" pos_max=0x%"PRIx64" dts_min=%"PRId64" dts_max=%"PRId64"\n",
- pos_min, pos_max,
- ts_min, ts_max);
-#endif
- assert(pos_limit <= pos_max);
-
- if(no_change==0){
- int64_t approximate_keyframe_distance= pos_max - pos_limit;
- // interpolate position (better than dichotomy)
- pos = av_rescale(target_ts - ts_min, pos_max - pos_min, ts_max - ts_min)
- + pos_min - approximate_keyframe_distance;
- }else if(no_change==1){
- // bisection, if interpolation failed to change min or max pos last time
- pos = (pos_min + pos_limit)>>1;
- }else{
- /* linear search if bisection failed, can only happen if there
- are very few or no keyframes between min/max */
- pos=pos_min;
- }
- if(pos <= pos_min)
- pos= pos_min + 1;
- else if(pos > pos_limit)
- pos= pos_limit;
- start_pos= pos;
-
- ts = read_timestamp(s, stream_index, &pos, INT64_MAX); //may pass pos_limit instead of -1
- if(pos == pos_max)
- no_change++;
- else
- no_change=0;
-#ifdef DEBUG_SEEK
-av_log(s, AV_LOG_DEBUG, "%"PRId64" %"PRId64" %"PRId64" / %"PRId64" %"PRId64" %"PRId64" target:%"PRId64" limit:%"PRId64" start:%"PRId64" noc:%d\n", pos_min, pos, pos_max, ts_min, ts, ts_max, target_ts, pos_limit, start_pos, no_change);
-#endif
- if(ts == AV_NOPTS_VALUE){
- av_log(s, AV_LOG_ERROR, "read_timestamp() failed in the middle\n");
- return -1;
- }
- assert(ts != AV_NOPTS_VALUE);
- if (target_ts <= ts) {
- pos_limit = start_pos - 1;
- pos_max = pos;
- ts_max = ts;
- }
- if (target_ts >= ts) {
- pos_min = pos;
- ts_min = ts;
- }
- }
-
- pos = (flags & AVSEEK_FLAG_BACKWARD) ? pos_min : pos_max;
- ts = (flags & AVSEEK_FLAG_BACKWARD) ? ts_min : ts_max;
-#ifdef DEBUG_SEEK
- pos_min = pos;
- ts_min = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
- pos_min++;
- ts_max = read_timestamp(s, stream_index, &pos_min, INT64_MAX);
- av_log(s, AV_LOG_DEBUG, "pos=0x%"PRIx64" %"PRId64"<=%"PRId64"<=%"PRId64"\n",
- pos, ts_min, target_ts, ts_max);
-#endif
- *ts_ret= ts;
- return pos;
-}
-
-static int av_seek_frame_byte(AVFormatContext *s, int stream_index, int64_t pos, int flags){
- int64_t pos_min, pos_max;
-#if 0
- AVStream *st;
-
- if (stream_index < 0)
- return -1;
-
- st= s->streams[stream_index];
-#endif
-
- pos_min = s->data_offset;
- pos_max = url_fsize(s->pb) - 1;
-
- if (pos < pos_min) pos= pos_min;
- else if(pos > pos_max) pos= pos_max;
-
- url_fseek(s->pb, pos, SEEK_SET);
-
-#if 0
- av_update_cur_dts(s, st, ts);
-#endif
- return 0;
-}
-
-static int av_seek_frame_generic(AVFormatContext *s,
- int stream_index, int64_t timestamp, int flags)
-{
- int index, ret;
- AVStream *st;
- AVIndexEntry *ie;
-
- st = s->streams[stream_index];
-
- index = av_index_search_timestamp(st, timestamp, flags);
-
- if(index < 0 || index==st->nb_index_entries-1){
- int i;
- AVPacket pkt;
-
- if(st->nb_index_entries){
- assert(st->index_entries);
- ie= &st->index_entries[st->nb_index_entries-1];
- if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
- return ret;
- av_update_cur_dts(s, st, ie->timestamp);
- }else{
- if ((ret = url_fseek(s->pb, 0, SEEK_SET)) < 0)
- return ret;
- }
- for(i=0;; i++) {
- int ret = av_read_frame(s, &pkt);
- if(ret<0)
- break;
- av_free_packet(&pkt);
- if(stream_index == pkt.stream_index){
- if((pkt.flags & PKT_FLAG_KEY) && pkt.dts > timestamp)
- break;
- }
- }
- index = av_index_search_timestamp(st, timestamp, flags);
- }
- if (index < 0)
- return -1;
-
- av_read_frame_flush(s);
- if (s->iformat->read_seek){
- if(s->iformat->read_seek(s, stream_index, timestamp, flags) >= 0)
- return 0;
- }
- ie = &st->index_entries[index];
- if ((ret = url_fseek(s->pb, ie->pos, SEEK_SET)) < 0)
- return ret;
- av_update_cur_dts(s, st, ie->timestamp);
-
- return 0;
-}
-
-int av_seek_frame(AVFormatContext *s, int stream_index, int64_t timestamp, int flags)
-{
- int ret;
- AVStream *st;
-
- av_read_frame_flush(s);
-
- if(flags & AVSEEK_FLAG_BYTE)
- return av_seek_frame_byte(s, stream_index, timestamp, flags);
-
- if(stream_index < 0){
- stream_index= av_find_default_stream_index(s);
- if(stream_index < 0)
- return -1;
-
- st= s->streams[stream_index];
- /* timestamp for default must be expressed in AV_TIME_BASE units */
- timestamp = av_rescale(timestamp, st->time_base.den, AV_TIME_BASE * (int64_t)st->time_base.num);
- }
-
- /* first, we try the format specific seek */
- if (s->iformat->read_seek)
- ret = s->iformat->read_seek(s, stream_index, timestamp, flags);
- else
- ret = -1;
- if (ret >= 0) {
- return 0;
- }
-
- if(s->iformat->read_timestamp)
- return av_seek_frame_binary(s, stream_index, timestamp, flags);
- else
- return av_seek_frame_generic(s, stream_index, timestamp, flags);
-}
-
-/*******************************************************/
-
-/**
- * Returns TRUE if the stream has accurate duration in any stream.
- *
- * @return TRUE if the stream has accurate duration for at least one component.
- */
-static int av_has_duration(AVFormatContext *ic)
-{
- int i;
- AVStream *st;
-
- for(i = 0;i < ic->nb_streams; i++) {
- st = ic->streams[i];
- if (st->duration != AV_NOPTS_VALUE)
- return 1;
- }
- return 0;
-}
-
-/**
- * Estimate the stream timings from the one of each components.
- *
- * Also computes the global bitrate if possible.
- */
-static void av_update_stream_timings(AVFormatContext *ic)
-{
- int64_t start_time, start_time1, end_time, end_time1;
- int64_t duration, duration1;
- int i;
- AVStream *st;
-
- start_time = INT64_MAX;
- end_time = INT64_MIN;
- duration = INT64_MIN;
- for(i = 0;i < ic->nb_streams; i++) {
- st = ic->streams[i];
- if (st->start_time != AV_NOPTS_VALUE && st->time_base.den) {
- start_time1= av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q);
- if (start_time1 < start_time)
- start_time = start_time1;
- if (st->duration != AV_NOPTS_VALUE) {
- end_time1 = start_time1
- + av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
- if (end_time1 > end_time)
- end_time = end_time1;
- }
- }
- if (st->duration != AV_NOPTS_VALUE) {
- duration1 = av_rescale_q(st->duration, st->time_base, AV_TIME_BASE_Q);
- if (duration1 > duration)
- duration = duration1;
- }
- }
- if (start_time != INT64_MAX) {
- ic->start_time = start_time;
- if (end_time != INT64_MIN) {
- if (end_time - start_time > duration)
- duration = end_time - start_time;
- }
- }
- if (duration != INT64_MIN) {
- ic->duration = duration;
- if (ic->file_size > 0) {
- /* compute the bitrate */
- ic->bit_rate = (double)ic->file_size * 8.0 * AV_TIME_BASE /
- (double)ic->duration;
- }
- }
-}
-
-static void fill_all_stream_timings(AVFormatContext *ic)
-{
- int i;
- AVStream *st;
-
- av_update_stream_timings(ic);
- for(i = 0;i < ic->nb_streams; i++) {
- st = ic->streams[i];
- if (st->start_time == AV_NOPTS_VALUE) {
- if(ic->start_time != AV_NOPTS_VALUE)
- st->start_time = av_rescale_q(ic->start_time, AV_TIME_BASE_Q, st->time_base);
- if(ic->duration != AV_NOPTS_VALUE)
- st->duration = av_rescale_q(ic->duration, AV_TIME_BASE_Q, st->time_base);
- }
- }
-}
-
-static void av_estimate_timings_from_bit_rate(AVFormatContext *ic)
-{
- int64_t filesize, duration;
- int bit_rate, i;
- AVStream *st;
-
- /* if bit_rate is already set, we believe it */
- if (ic->bit_rate == 0) {
- bit_rate = 0;
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- bit_rate += st->codec->bit_rate;
- }
- ic->bit_rate = bit_rate;
- }
-
- /* if duration is already set, we believe it */
- if (ic->duration == AV_NOPTS_VALUE &&
- ic->bit_rate != 0 &&
- ic->file_size != 0) {
- filesize = ic->file_size;
- if (filesize > 0) {
- for(i = 0; i < ic->nb_streams; i++) {
- st = ic->streams[i];
- duration= av_rescale(8*filesize, st->time_base.den, ic->bit_rate*(int64_t)st->time_base.num);
- if (st->duration == AV_NOPTS_VALUE)
- st->duration = duration;
- }
- }
- }
-}
-
-#define DURATION_MAX_READ_SIZE 250000
-
-/* only usable for MPEG-PS streams */
-static void av_estimate_timings_from_pts(AVFormatContext *ic, int64_t old_offset)
-{
- AVPacket pkt1, *pkt = &pkt1;
- AVStream *st;
- int read_size, i, ret;
- int64_t end_time;
- int64_t filesize, offset, duration;
-
- /* free previous packet */
- if (ic->cur_st && ic->cur_st->parser)
- av_free_packet(&ic->cur_pkt);
- ic->cur_st = NULL;
-
- /* flush packet queue */
- flush_packet_queue(ic);
-
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if (st->parser) {
- av_parser_close(st->parser);
- st->parser= NULL;
- }
- }
-
- /* we read the first packets to get the first PTS (not fully
- accurate, but it is enough now) */
- url_fseek(ic->pb, 0, SEEK_SET);
- read_size = 0;
- for(;;) {
- if (read_size >= DURATION_MAX_READ_SIZE)
- break;
- /* if all info is available, we can stop */
- for(i = 0;i < ic->nb_streams; i++) {
- st = ic->streams[i];
- if (st->start_time == AV_NOPTS_VALUE)
- break;
- }
- if (i == ic->nb_streams)
- break;
-
- ret = av_read_packet(ic, pkt);
- if (ret != 0)
- break;
- read_size += pkt->size;
- st = ic->streams[pkt->stream_index];
- if (pkt->pts != AV_NOPTS_VALUE) {
- if (st->start_time == AV_NOPTS_VALUE)
- st->start_time = pkt->pts;
- }
- av_free_packet(pkt);
- }
-
- /* estimate the end time (duration) */
- /* XXX: may need to support wrapping */
- filesize = ic->file_size;
- offset = filesize - DURATION_MAX_READ_SIZE;
- if (offset < 0)
- offset = 0;
-
- url_fseek(ic->pb, offset, SEEK_SET);
- read_size = 0;
- for(;;) {
- if (read_size >= DURATION_MAX_READ_SIZE)
- break;
-
- ret = av_read_packet(ic, pkt);
- if (ret != 0)
- break;
- read_size += pkt->size;
- st = ic->streams[pkt->stream_index];
- if (pkt->pts != AV_NOPTS_VALUE &&
- st->start_time != AV_NOPTS_VALUE) {
- end_time = pkt->pts;
- duration = end_time - st->start_time;
- if (duration > 0) {
- if (st->duration == AV_NOPTS_VALUE ||
- st->duration < duration)
- st->duration = duration;
- }
- }
- av_free_packet(pkt);
- }
-
- fill_all_stream_timings(ic);
-
- url_fseek(ic->pb, old_offset, SEEK_SET);
- for(i=0; i<ic->nb_streams; i++){
- st= ic->streams[i];
- st->cur_dts= st->first_dts;
- st->last_IP_pts = AV_NOPTS_VALUE;
- }
-}
-
-static void av_estimate_timings(AVFormatContext *ic, int64_t old_offset)
-{
- int64_t file_size;
-
- /* get the file size, if possible */
- if (ic->iformat->flags & AVFMT_NOFILE) {
- file_size = 0;
- } else {
- file_size = url_fsize(ic->pb);
- if (file_size < 0)
- file_size = 0;
- }
- ic->file_size = file_size;
-
- if ((!strcmp(ic->iformat->name, "mpeg") ||
- !strcmp(ic->iformat->name, "mpegts")) &&
- file_size && !url_is_streamed(ic->pb)) {
- /* get accurate estimate from the PTSes */
- av_estimate_timings_from_pts(ic, old_offset);
- } else if (av_has_duration(ic)) {
- /* at least one component has timings - we use them for all
- the components */
- fill_all_stream_timings(ic);
- } else {
- /* less precise: use bitrate info */
- av_estimate_timings_from_bit_rate(ic);
- }
- av_update_stream_timings(ic);
-
-#if 0
- {
- int i;
- AVStream *st;
- for(i = 0;i < ic->nb_streams; i++) {
- st = ic->streams[i];
- printf("%d: start_time: %0.3f duration: %0.3f\n",
- i, (double)st->start_time / AV_TIME_BASE,
- (double)st->duration / AV_TIME_BASE);
- }
- printf("stream: start_time: %0.3f duration: %0.3f bitrate=%d kb/s\n",
- (double)ic->start_time / AV_TIME_BASE,
- (double)ic->duration / AV_TIME_BASE,
- ic->bit_rate / 1000);
- }
-#endif
-}
-
-static int has_codec_parameters(AVCodecContext *enc)
-{
- int val;
- switch(enc->codec_type) {
- case CODEC_TYPE_AUDIO:
- val = enc->sample_rate && enc->channels && enc->sample_fmt != SAMPLE_FMT_NONE;
- if(!enc->frame_size &&
- (enc->codec_id == CODEC_ID_VORBIS ||
- enc->codec_id == CODEC_ID_AAC))
- return 0;
- break;
- case CODEC_TYPE_VIDEO:
- val = enc->width && enc->pix_fmt != PIX_FMT_NONE;
- break;
- default:
- val = 1;
- break;
- }
- return enc->codec_id != CODEC_ID_NONE && val != 0;
-}
-
-static int try_decode_frame(AVStream *st, const uint8_t *data, int size)
-{
- int16_t *samples;
- AVCodec *codec;
- int got_picture, data_size, ret=0;
- AVFrame picture;
-
- if(!st->codec->codec){
- codec = avcodec_find_decoder(st->codec->codec_id);
- if (!codec)
- return -1;
- ret = avcodec_open(st->codec, codec);
- if (ret < 0)
- return ret;
- }
-
- if(!has_codec_parameters(st->codec)){
- switch(st->codec->codec_type) {
- case CODEC_TYPE_VIDEO:
- ret = avcodec_decode_video(st->codec, &picture,
- &got_picture, data, size);
- break;
- case CODEC_TYPE_AUDIO:
- data_size = FFMAX(size, AVCODEC_MAX_AUDIO_FRAME_SIZE);
- samples = av_malloc(data_size);
- if (!samples)
- goto fail;
- ret = avcodec_decode_audio2(st->codec, samples,
- &data_size, data, size);
- av_free(samples);
- break;
- default:
- break;
- }
- }
- fail:
- return ret;
-}
-
-unsigned int codec_get_tag(const AVCodecTag *tags, int id)
-{
- while (tags->id != CODEC_ID_NONE) {
- if (tags->id == id)
- return tags->tag;
- tags++;
- }
- return 0;
-}
-
-enum CodecID codec_get_id(const AVCodecTag *tags, unsigned int tag)
-{
- int i;
- for(i=0; tags[i].id != CODEC_ID_NONE;i++) {
- if(tag == tags[i].tag)
- return tags[i].id;
- }
- for(i=0; tags[i].id != CODEC_ID_NONE; i++) {
- if( toupper((tag >> 0)&0xFF) == toupper((tags[i].tag >> 0)&0xFF)
- && toupper((tag >> 8)&0xFF) == toupper((tags[i].tag >> 8)&0xFF)
- && toupper((tag >>16)&0xFF) == toupper((tags[i].tag >>16)&0xFF)
- && toupper((tag >>24)&0xFF) == toupper((tags[i].tag >>24)&0xFF))
- return tags[i].id;
- }
- return CODEC_ID_NONE;
-}
-
-unsigned int av_codec_get_tag(const AVCodecTag * const *tags, enum CodecID id)
-{
- int i;
- for(i=0; tags && tags[i]; i++){
- int tag= codec_get_tag(tags[i], id);
- if(tag) return tag;
- }
- return 0;
-}
-
-enum CodecID av_codec_get_id(const AVCodecTag * const *tags, unsigned int tag)
-{
- int i;
- for(i=0; tags && tags[i]; i++){
- enum CodecID id= codec_get_id(tags[i], tag);
- if(id!=CODEC_ID_NONE) return id;
- }
- return CODEC_ID_NONE;
-}
-
-static void compute_chapters_end(AVFormatContext *s)
-{
- unsigned int i;
-
- for (i=0; i+1<s->nb_chapters; i++)
- if (s->chapters[i]->end == AV_NOPTS_VALUE) {
- assert(s->chapters[i]->start <= s->chapters[i+1]->start);
- assert(!av_cmp_q(s->chapters[i]->time_base, s->chapters[i+1]->time_base));
- s->chapters[i]->end = s->chapters[i+1]->start;
- }
-
- if (s->nb_chapters && s->chapters[i]->end == AV_NOPTS_VALUE) {
- assert(s->start_time != AV_NOPTS_VALUE);
- assert(s->duration > 0);
- s->chapters[i]->end = av_rescale_q(s->start_time + s->duration,
- AV_TIME_BASE_Q,
- s->chapters[i]->time_base);
- }
-}
-
-/* absolute maximum size we read until we abort */
-#define MAX_READ_SIZE 5000000
-
-#define MAX_STD_TIMEBASES (60*12+5)
-static int get_std_framerate(int i){
- if(i<60*12) return i*1001;
- else return ((const int[]){24,30,60,12,15})[i-60*12]*1000*12;
-}
-
-/*
- * Is the time base unreliable.
- * This is a heuristic to balance between quick acceptance of the values in
- * the headers vs. some extra checks.
- * Old DivX and Xvid often have nonsense timebases like 1fps or 2fps.
- * MPEG-2 commonly misuses field repeat flags to store different framerates.
- * And there are "variable" fps files this needs to detect as well.
- */
-static int tb_unreliable(AVCodecContext *c){
- if( c->time_base.den >= 101L*c->time_base.num
- || c->time_base.den < 5L*c->time_base.num
-/* || c->codec_tag == ff_get_fourcc("DIVX")
- || c->codec_tag == ff_get_fourcc("XVID")*/
- || c->codec_id == CODEC_ID_MPEG2VIDEO)
- return 1;
- return 0;
-}
-
-int av_find_stream_info(AVFormatContext *ic)
-{
- int i, count, ret, read_size, j;
- AVStream *st;
- AVPacket pkt1, *pkt;
- int64_t last_dts[MAX_STREAMS];
- int duration_count[MAX_STREAMS]={0};
- double (*duration_error)[MAX_STD_TIMEBASES];
- int64_t old_offset = url_ftell(ic->pb);
- int64_t codec_info_duration[MAX_STREAMS]={0};
- int codec_info_nb_frames[MAX_STREAMS]={0};
-
- duration_error = av_mallocz(MAX_STREAMS * sizeof(*duration_error));
- if (!duration_error) return AVERROR(ENOMEM);
-
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if(st->codec->codec_type == CODEC_TYPE_VIDEO){
-/* if(!st->time_base.num)
- st->time_base= */
- if(!st->codec->time_base.num)
- st->codec->time_base= st->time_base;
- }
- //only for the split stuff
- if (!st->parser) {
- st->parser = av_parser_init(st->codec->codec_id);
- if(st->need_parsing == AVSTREAM_PARSE_HEADERS && st->parser){
- st->parser->flags |= PARSER_FLAG_COMPLETE_FRAMES;
- }
- }
- }
-
- for(i=0;i<MAX_STREAMS;i++){
- last_dts[i]= AV_NOPTS_VALUE;
- }
-
- count = 0;
- read_size = 0;
- for(;;) {
- /* check if one codec still needs to be handled */
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if (!has_codec_parameters(st->codec))
- break;
- /* variable fps and no guess at the real fps */
- if( tb_unreliable(st->codec)
- && duration_count[i]<20 && st->codec->codec_type == CODEC_TYPE_VIDEO)
- break;
- if(st->parser && st->parser->parser->split && !st->codec->extradata)
- break;
- if(st->first_dts == AV_NOPTS_VALUE)
- break;
- }
- if (i == ic->nb_streams) {
- /* NOTE: if the format has no header, then we need to read
- some packets to get most of the streams, so we cannot
- stop here */
- if (!(ic->ctx_flags & AVFMTCTX_NOHEADER)) {
- /* if we found the info for all the codecs, we can stop */
- ret = count;
- break;
- }
- }
- /* we did not get all the codec info, but we read too much data */
- if (read_size >= MAX_READ_SIZE) {
- ret = count;
- break;
- }
-
- /* NOTE: a new stream can be added there if no header in file
- (AVFMTCTX_NOHEADER) */
- ret = av_read_frame_internal(ic, &pkt1);
- if (ret < 0) {
- /* EOF or error */
- ret = -1; /* we could not have all the codec parameters before EOF */
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if (!has_codec_parameters(st->codec)){
- char buf[256];
- avcodec_string(buf, sizeof(buf), st->codec, 0);
- av_log(ic, AV_LOG_INFO, "Could not find codec parameters (%s)\n", buf);
- } else {
- ret = 0;
- }
- }
- break;
- }
-
- pkt= add_to_pktbuf(&ic->packet_buffer, &pkt1, &ic->packet_buffer_end);
- if(av_dup_packet(pkt) < 0) {
- av_free(duration_error);
- return AVERROR(ENOMEM);
- }
-
- read_size += pkt->size;
-
- st = ic->streams[pkt->stream_index];
- if(codec_info_nb_frames[st->index]>1)
- codec_info_duration[st->index] += pkt->duration;
- if (pkt->duration != 0)
- codec_info_nb_frames[st->index]++;
-
- {
- int index= pkt->stream_index;
- int64_t last= last_dts[index];
- int64_t duration= pkt->dts - last;
-
- if(pkt->dts != AV_NOPTS_VALUE && last != AV_NOPTS_VALUE && duration>0){
- double dur= duration * av_q2d(st->time_base);
-
-// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
-// av_log(NULL, AV_LOG_ERROR, "%f\n", dur);
- if(duration_count[index] < 2)
- memset(duration_error[index], 0, sizeof(*duration_error));
- for(i=1; i<MAX_STD_TIMEBASES; i++){
- int framerate= get_std_framerate(i);
- int ticks= lrintf(dur*framerate/(1001*12));
- double error= dur - ticks*1001*12/(double)framerate;
- duration_error[index][i] += error*error;
- }
- duration_count[index]++;
- }
- if(last == AV_NOPTS_VALUE || duration_count[index]<=1)
- last_dts[pkt->stream_index]= pkt->dts;
- }
- if(st->parser && st->parser->parser->split && !st->codec->extradata){
- int i= st->parser->parser->split(st->codec, pkt->data, pkt->size);
- if(i){
- st->codec->extradata_size= i;
- st->codec->extradata= av_malloc(st->codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- memcpy(st->codec->extradata, pkt->data, st->codec->extradata_size);
- memset(st->codec->extradata + i, 0, FF_INPUT_BUFFER_PADDING_SIZE);
- }
- }
-
- /* if still no information, we try to open the codec and to
- decompress the frame. We try to avoid that in most cases as
- it takes longer and uses more memory. For MPEG-4, we need to
- decompress for QuickTime. */
- if (!has_codec_parameters(st->codec) /*&&
- (st->codec->codec_id == CODEC_ID_FLV1 ||
- st->codec->codec_id == CODEC_ID_H264 ||
- st->codec->codec_id == CODEC_ID_H263 ||
- st->codec->codec_id == CODEC_ID_H261 ||
- st->codec->codec_id == CODEC_ID_VORBIS ||
- st->codec->codec_id == CODEC_ID_MJPEG ||
- st->codec->codec_id == CODEC_ID_PNG ||
- st->codec->codec_id == CODEC_ID_PAM ||
- st->codec->codec_id == CODEC_ID_PGM ||
- st->codec->codec_id == CODEC_ID_PGMYUV ||
- st->codec->codec_id == CODEC_ID_PBM ||
- st->codec->codec_id == CODEC_ID_PPM ||
- st->codec->codec_id == CODEC_ID_SHORTEN ||
- (st->codec->codec_id == CODEC_ID_MPEG4 && !st->need_parsing))*/)
- try_decode_frame(st, pkt->data, pkt->size);
-
- if (st->time_base.den > 0 && av_rescale_q(codec_info_duration[st->index], st->time_base, AV_TIME_BASE_Q) >= ic->max_analyze_duration) {
- break;
- }
- count++;
- }
-
- // close codecs which were opened in try_decode_frame()
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if(st->codec->codec)
- avcodec_close(st->codec);
- }
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- if(st->codec->codec_id == CODEC_ID_RAWVIDEO && !st->codec->codec_tag && !st->codec->bits_per_coded_sample)
- st->codec->codec_tag= avcodec_pix_fmt_to_codec_tag(st->codec->pix_fmt);
-
- if(duration_count[i]
- && tb_unreliable(st->codec) /*&&
- //FIXME we should not special-case MPEG-2, but this needs testing with non-MPEG-2 ...
- st->time_base.num*duration_sum[i]/duration_count[i]*101LL > st->time_base.den*/){
- double best_error= 2*av_q2d(st->time_base);
- best_error= best_error*best_error*duration_count[i]*1000*12*30;
-
- for(j=1; j<MAX_STD_TIMEBASES; j++){
- double error= duration_error[i][j] * get_std_framerate(j);
-// if(st->codec->codec_type == CODEC_TYPE_VIDEO)
-// av_log(NULL, AV_LOG_ERROR, "%f %f\n", get_std_framerate(j) / 12.0/1001, error);
- if(error < best_error){
- best_error= error;
- av_reduce(&st->r_frame_rate.num, &st->r_frame_rate.den, get_std_framerate(j), 12*1001, INT_MAX);
- }
- }
- }
-
- if (!st->r_frame_rate.num){
- if( st->codec->time_base.den * (int64_t)st->time_base.num
- <= st->codec->time_base.num * (int64_t)st->time_base.den){
- st->r_frame_rate.num = st->codec->time_base.den;
- st->r_frame_rate.den = st->codec->time_base.num;
- }else{
- st->r_frame_rate.num = st->time_base.den;
- st->r_frame_rate.den = st->time_base.num;
- }
- }
- }else if(st->codec->codec_type == CODEC_TYPE_AUDIO) {
- if(!st->codec->bits_per_coded_sample)
- st->codec->bits_per_coded_sample= av_get_bits_per_sample(st->codec->codec_id);
- }
- }
-
- av_estimate_timings(ic, old_offset);
-
- compute_chapters_end(ic);
-
-#if 0
- /* correct DTS for B-frame streams with no timestamps */
- for(i=0;i<ic->nb_streams;i++) {
- st = ic->streams[i];
- if (st->codec->codec_type == CODEC_TYPE_VIDEO) {
- if(b-frames){
- ppktl = &ic->packet_buffer;
- while(ppkt1){
- if(ppkt1->stream_index != i)
- continue;
- if(ppkt1->pkt->dts < 0)
- break;
- if(ppkt1->pkt->pts != AV_NOPTS_VALUE)
- break;
- ppkt1->pkt->dts -= delta;
- ppkt1= ppkt1->next;
- }
- if(ppkt1)
- continue;
- st->cur_dts -= delta;
- }
- }
- }
-#endif
-
- av_free(duration_error);
-
- return ret;
-}
-
-/*******************************************************/
-
-int av_read_play(AVFormatContext *s)
-{
- if (s->iformat->read_play)
- return s->iformat->read_play(s);
- if (s->pb)
- return av_url_read_fpause(s->pb, 0);
- return AVERROR(ENOSYS);
-}
-
-int av_read_pause(AVFormatContext *s)
-{
- if (s->iformat->read_pause)
- return s->iformat->read_pause(s);
- if (s->pb)
- return av_url_read_fpause(s->pb, 1);
- return AVERROR(ENOSYS);
-}
-
-void av_close_input_stream(AVFormatContext *s)
-{
- int i;
- AVStream *st;
-
- /* free previous packet */
- if (s->cur_st && s->cur_st->parser)
- av_free_packet(&s->cur_pkt);
-
- if (s->iformat->read_close)
- s->iformat->read_close(s);
- for(i=0;i<s->nb_streams;i++) {
- /* free all data in a stream component */
- st = s->streams[i];
- if (st->parser) {
- av_parser_close(st->parser);
- }
- av_metadata_free(&st->metadata);
- av_free(st->index_entries);
- av_free(st->codec->extradata);
- av_free(st->codec);
- av_free(st->filename);
- av_free(st->priv_data);
- av_free(st);
- }
- for(i=s->nb_programs-1; i>=0; i--) {
- av_freep(&s->programs[i]->provider_name);
- av_freep(&s->programs[i]->name);
- av_metadata_free(&s->programs[i]->metadata);
- av_freep(&s->programs[i]->stream_index);
- av_freep(&s->programs[i]);
- }
- av_freep(&s->programs);
- flush_packet_queue(s);
- av_freep(&s->priv_data);
- while(s->nb_chapters--) {
- av_free(s->chapters[s->nb_chapters]->title);
- av_metadata_free(&s->chapters[s->nb_chapters]->metadata);
- av_free(s->chapters[s->nb_chapters]);
- }
- av_freep(&s->chapters);
- av_metadata_free(&s->metadata);
- av_free(s);
-}
-
-void av_close_input_file(AVFormatContext *s)
-{
- ByteIOContext *pb = s->iformat->flags & AVFMT_NOFILE ? NULL : s->pb;
- av_close_input_stream(s);
- if (pb)
- url_fclose(pb);
-}
-
-AVStream *av_new_stream(AVFormatContext *s, int id)
-{
- AVStream *st;
- int i;
-
- if (s->nb_streams >= MAX_STREAMS)
- return NULL;
-
- st = av_mallocz(sizeof(AVStream));
- if (!st)
- return NULL;
-
- st->codec= avcodec_alloc_context();
- if (s->iformat) {
- /* no default bitrate if decoding */
- st->codec->bit_rate = 0;
- }
- st->index = s->nb_streams;
- st->id = id;
- st->start_time = AV_NOPTS_VALUE;
- st->duration = AV_NOPTS_VALUE;
- /* we set the current DTS to 0 so that formats without any timestamps
- but durations get some timestamps, formats with some unknown
- timestamps have their first few packets buffered and the
- timestamps corrected before they are returned to the user */
- st->cur_dts = 0;
- st->first_dts = AV_NOPTS_VALUE;
-
- /* default pts setting is MPEG-like */
- av_set_pts_info(st, 33, 1, 90000);
- st->last_IP_pts = AV_NOPTS_VALUE;
- for(i=0; i<MAX_REORDER_DELAY+1; i++)
- st->pts_buffer[i]= AV_NOPTS_VALUE;
-
- st->sample_aspect_ratio = (AVRational){0,1};
-
- s->streams[s->nb_streams++] = st;
- return st;
-}
-
-AVProgram *av_new_program(AVFormatContext *ac, int id)
-{
- AVProgram *program=NULL;
- int i;
-
-#ifdef DEBUG_SI
- av_log(ac, AV_LOG_DEBUG, "new_program: id=0x%04x\n", id);
-#endif
-
- for(i=0; i<ac->nb_programs; i++)
- if(ac->programs[i]->id == id)
- program = ac->programs[i];
-
- if(!program){
- program = av_mallocz(sizeof(AVProgram));
- if (!program)
- return NULL;
- dynarray_add(&ac->programs, &ac->nb_programs, program);
- program->discard = AVDISCARD_NONE;
- }
- program->id = id;
-
- return program;
-}
-
-void av_set_program_name(AVProgram *program, char *provider_name, char *name)
-{
- assert(!provider_name == !name);
- if(name){
- av_free(program->provider_name);
- av_free(program-> name);
- program->provider_name = av_strdup(provider_name);
- program-> name = av_strdup( name);
- }
-}
-
-AVChapter *ff_new_chapter(AVFormatContext *s, int id, AVRational time_base, int64_t start, int64_t end, const char *title)
-{
- AVChapter *chapter = NULL;
- int i;
-
- for(i=0; i<s->nb_chapters; i++)
- if(s->chapters[i]->id == id)
- chapter = s->chapters[i];
-
- if(!chapter){
- chapter= av_mallocz(sizeof(AVChapter));
- if(!chapter)
- return NULL;
- dynarray_add(&s->chapters, &s->nb_chapters, chapter);
- }
- av_free(chapter->title);
- chapter->title = av_strdup(title);
- chapter->id = id;
- chapter->time_base= time_base;
- chapter->start = start;
- chapter->end = end;
-
- return chapter;
-}
-
-/************************************************************/
-/* output media file */
-
-int av_set_parameters(AVFormatContext *s, AVFormatParameters *ap)
-{
- int ret;
-
- if (s->oformat->priv_data_size > 0) {
- s->priv_data = av_mallocz(s->oformat->priv_data_size);
- if (!s->priv_data)
- return AVERROR(ENOMEM);
- } else
- s->priv_data = NULL;
-
- if (s->oformat->set_parameters) {
- ret = s->oformat->set_parameters(s, ap);
- if (ret < 0)
- return ret;
- }
- return 0;
-}
-
-int av_write_header(AVFormatContext *s)
-{
- int ret, i;
- AVStream *st;
-
- // some sanity checks
- for(i=0;i<s->nb_streams;i++) {
- st = s->streams[i];
-
- switch (st->codec->codec_type) {
- case CODEC_TYPE_AUDIO:
- if(st->codec->sample_rate<=0){
- av_log(s, AV_LOG_ERROR, "sample rate not set\n");
- return -1;
- }
- if(!st->codec->block_align)
- st->codec->block_align = st->codec->channels *
- av_get_bits_per_sample(st->codec->codec_id) >> 3;
- break;
- case CODEC_TYPE_VIDEO:
- if(st->codec->time_base.num<=0 || st->codec->time_base.den<=0){ //FIXME audio too?
- av_log(s, AV_LOG_ERROR, "time base not set\n");
- return -1;
- }
- if(st->codec->width<=0 || st->codec->height<=0){
- av_log(s, AV_LOG_ERROR, "dimensions not set\n");
- return -1;
- }
- if(av_cmp_q(st->sample_aspect_ratio, st->codec->sample_aspect_ratio)){
- av_log(s, AV_LOG_ERROR, "Aspect ratio mismatch between encoder and muxer layer\n");
- return -1;
- }
- break;
- }
-
- if(s->oformat->codec_tag){
- if(st->codec->codec_tag){
- //FIXME
- //check that tag + id is in the table
- //if neither is in the table -> OK
- //if tag is in the table with another id -> FAIL
- //if id is in the table with another tag -> FAIL unless strict < ?
- }else
- st->codec->codec_tag= av_codec_get_tag(s->oformat->codec_tag, st->codec->codec_id);
- }
- }
-
- if (!s->priv_data && s->oformat->priv_data_size > 0) {
- s->priv_data = av_mallocz(s->oformat->priv_data_size);
- if (!s->priv_data)
- return AVERROR(ENOMEM);
- }
-
-#if LIBAVFORMAT_VERSION_MAJOR < 53
- ff_metadata_mux_compat(s);
-#endif
-
- if(s->oformat->write_header){
- ret = s->oformat->write_header(s);
- if (ret < 0)
- return ret;
- }
-
- /* init PTS generation */
- for(i=0;i<s->nb_streams;i++) {
- int64_t den = AV_NOPTS_VALUE;
- st = s->streams[i];
-
- switch (st->codec->codec_type) {
- case CODEC_TYPE_AUDIO:
- den = (int64_t)st->time_base.num * st->codec->sample_rate;
- break;
- case CODEC_TYPE_VIDEO:
- den = (int64_t)st->time_base.num * st->codec->time_base.den;
- break;
- default:
- break;
- }
- if (den != AV_NOPTS_VALUE) {
- if (den <= 0)
- return AVERROR_INVALIDDATA;
- av_frac_init(&st->pts, 0, 0, den);
- }
- }
- return 0;
-}
-
-//FIXME merge with compute_pkt_fields
-static int compute_pkt_fields2(AVStream *st, AVPacket *pkt){
- int delay = FFMAX(st->codec->has_b_frames, !!st->codec->max_b_frames);
- int num, den, frame_size, i;
-
-// av_log(st->codec, AV_LOG_DEBUG, "av_write_frame: pts:%"PRId64" dts:%"PRId64" cur_dts:%"PRId64" b:%d size:%d st:%d\n", pkt->pts, pkt->dts, st->cur_dts, delay, pkt->size, pkt->stream_index);
-
-/* if(pkt->pts == AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE)
- return -1;*/
-
- /* duration field */
- if (pkt->duration == 0) {
- compute_frame_duration(&num, &den, st, NULL, pkt);
- if (den && num) {
- pkt->duration = av_rescale(1, num * (int64_t)st->time_base.den, den * (int64_t)st->time_base.num);
- }
- }
-
- if(pkt->pts == AV_NOPTS_VALUE && pkt->dts != AV_NOPTS_VALUE && delay==0)
- pkt->pts= pkt->dts;
-
- //XXX/FIXME this is a temporary hack until all encoders output pts
- if((pkt->pts == 0 || pkt->pts == AV_NOPTS_VALUE) && pkt->dts == AV_NOPTS_VALUE && !delay){
- pkt->dts=
-// pkt->pts= st->cur_dts;
- pkt->pts= st->pts.val;
- }
-
- //calculate dts from pts
- if(pkt->pts != AV_NOPTS_VALUE && pkt->dts == AV_NOPTS_VALUE && delay <= MAX_REORDER_DELAY){
- st->pts_buffer[0]= pkt->pts;
- for(i=1; i<delay+1 && st->pts_buffer[i] == AV_NOPTS_VALUE; i++)
- st->pts_buffer[i]= (i-delay-1) * pkt->duration;
- for(i=0; i<delay && st->pts_buffer[i] > st->pts_buffer[i+1]; i++)
- FFSWAP(int64_t, st->pts_buffer[i], st->pts_buffer[i+1]);
-
- pkt->dts= st->pts_buffer[0];
- }
-
- if(st->cur_dts && st->cur_dts != AV_NOPTS_VALUE && st->cur_dts >= pkt->dts){
- av_log(st->codec, AV_LOG_ERROR, "error, non monotone timestamps %"PRId64" >= %"PRId64"\n", st->cur_dts, pkt->dts);
- return -1;
- }
- if(pkt->dts != AV_NOPTS_VALUE && pkt->pts != AV_NOPTS_VALUE && pkt->pts < pkt->dts){
- av_log(st->codec, AV_LOG_ERROR, "error, pts < dts\n");
- return -1;
- }
-
-// av_log(NULL, AV_LOG_DEBUG, "av_write_frame: pts2:%"PRId64" dts2:%"PRId64"\n", pkt->pts, pkt->dts);
- st->cur_dts= pkt->dts;
- st->pts.val= pkt->dts;
-
- /* update pts */
- switch (st->codec->codec_type) {
- case CODEC_TYPE_AUDIO:
- frame_size = get_audio_frame_size(st->codec, pkt->size);
-
- /* HACK/FIXME, we skip the initial 0 size packets as they are most
- likely equal to the encoder delay, but it would be better if we
- had the real timestamps from the encoder */
- if (frame_size >= 0 && (pkt->size || st->pts.num!=st->pts.den>>1 || st->pts.val)) {
- av_frac_add(&st->pts, (int64_t)st->time_base.den * frame_size);
- }
- break;
- case CODEC_TYPE_VIDEO:
- av_frac_add(&st->pts, (int64_t)st->time_base.den * st->codec->time_base.num);
- break;
- default:
- break;
- }
- return 0;
-}
-
-int av_write_frame(AVFormatContext *s, AVPacket *pkt)
-{
- int ret = compute_pkt_fields2(s->streams[pkt->stream_index], pkt);
-
- if(ret<0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
- return ret;
-
- ret= s->oformat->write_packet(s, pkt);
- if(!ret)
- ret= url_ferror(s->pb);
- return ret;
-}
-
-int av_interleave_packet_per_dts(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush){
- AVPacketList *pktl, **next_point, *this_pktl;
- int stream_count=0;
- int streams[MAX_STREAMS];
-
- if(pkt){
- AVStream *st= s->streams[ pkt->stream_index];
-
-// assert(pkt->destruct != av_destruct_packet); //FIXME
-
- this_pktl = av_mallocz(sizeof(AVPacketList));
- this_pktl->pkt= *pkt;
- if(pkt->destruct == av_destruct_packet)
- pkt->destruct= NULL; // not shared -> must keep original from being freed
- else
- av_dup_packet(&this_pktl->pkt); //shared -> must dup
-
- next_point = &s->packet_buffer;
- while(*next_point){
- AVStream *st2= s->streams[ (*next_point)->pkt.stream_index];
- int64_t left= st2->time_base.num * (int64_t)st ->time_base.den;
- int64_t right= st ->time_base.num * (int64_t)st2->time_base.den;
- if((*next_point)->pkt.dts * left > pkt->dts * right) //FIXME this can overflow
- break;
- next_point= &(*next_point)->next;
- }
- this_pktl->next= *next_point;
- *next_point= this_pktl;
- }
-
- memset(streams, 0, sizeof(streams));
- pktl= s->packet_buffer;
- while(pktl){
-//av_log(s, AV_LOG_DEBUG, "show st:%d dts:%"PRId64"\n", pktl->pkt.stream_index, pktl->pkt.dts);
- if(streams[ pktl->pkt.stream_index ] == 0)
- stream_count++;
- streams[ pktl->pkt.stream_index ]++;
- pktl= pktl->next;
- }
-
- if(stream_count && (s->nb_streams == stream_count || flush)){
- pktl= s->packet_buffer;
- *out= pktl->pkt;
-
- s->packet_buffer= pktl->next;
- av_freep(&pktl);
- return 1;
- }else{
- av_init_packet(out);
- return 0;
- }
-}
-
-/**
- * Interleaves an AVPacket correctly so it can be muxed.
- * @param out the interleaved packet will be output here
- * @param in the input packet
- * @param flush 1 if no further packets are available as input and all
- * remaining packets should be output
- * @return 1 if a packet was output, 0 if no packet could be output,
- * < 0 if an error occurred
- */
-static int av_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *in, int flush){
- if(s->oformat->interleave_packet)
- return s->oformat->interleave_packet(s, out, in, flush);
- else
- return av_interleave_packet_per_dts(s, out, in, flush);
-}
-
-int av_interleaved_write_frame(AVFormatContext *s, AVPacket *pkt){
- AVStream *st= s->streams[ pkt->stream_index];
-
- //FIXME/XXX/HACK drop zero sized packets
- if(st->codec->codec_type == CODEC_TYPE_AUDIO && pkt->size==0)
- return 0;
-
-//av_log(NULL, AV_LOG_DEBUG, "av_interleaved_write_frame %d %"PRId64" %"PRId64"\n", pkt->size, pkt->dts, pkt->pts);
- if(compute_pkt_fields2(st, pkt) < 0 && !(s->oformat->flags & AVFMT_NOTIMESTAMPS))
- return -1;
-
- if(pkt->dts == AV_NOPTS_VALUE)
- return -1;
-
- for(;;){
- AVPacket opkt;
- int ret= av_interleave_packet(s, &opkt, pkt, 0);
- if(ret<=0) //FIXME cleanup needed for ret<0 ?
- return ret;
-
- ret= s->oformat->write_packet(s, &opkt);
-
- av_free_packet(&opkt);
- pkt= NULL;
-
- if(ret<0)
- return ret;
- if(url_ferror(s->pb))
- return url_ferror(s->pb);
- }
-}
-
-int av_write_trailer(AVFormatContext *s)
-{
- int ret, i;
-
- for(;;){
- AVPacket pkt;
- ret= av_interleave_packet(s, &pkt, NULL, 1);
- if(ret<0) //FIXME cleanup needed for ret<0 ?
- goto fail;
- if(!ret)
- break;
-
- ret= s->oformat->write_packet(s, &pkt);
-
- av_free_packet(&pkt);
-
- if(ret<0)
- goto fail;
- if(url_ferror(s->pb))
- goto fail;
- }
-
- if(s->oformat->write_trailer)
- ret = s->oformat->write_trailer(s);
-fail:
- if(ret == 0)
- ret=url_ferror(s->pb);
- for(i=0;i<s->nb_streams;i++)
- av_freep(&s->streams[i]->priv_data);
- av_freep(&s->priv_data);
- return ret;
-}
-
-void av_program_add_stream_index(AVFormatContext *ac, int progid, unsigned int idx)
-{
- int i, j;
- AVProgram *program=NULL;
- void *tmp;
-
- for(i=0; i<ac->nb_programs; i++){
- if(ac->programs[i]->id != progid)
- continue;
- program = ac->programs[i];
- for(j=0; j<program->nb_stream_indexes; j++)
- if(program->stream_index[j] == idx)
- return;
-
- tmp = av_realloc(program->stream_index, sizeof(unsigned int)*(program->nb_stream_indexes+1));
- if(!tmp)
- return;
- program->stream_index = tmp;
- program->stream_index[program->nb_stream_indexes++] = idx;
- return;
- }
-}
-
-/* "user interface" functions */
-static void dump_stream_format(AVFormatContext *ic, int i, int index, int is_output)
-{
- char buf[256];
- int flags = (is_output ? ic->oformat->flags : ic->iformat->flags);
- AVStream *st = ic->streams[i];
- int g = ff_gcd(st->time_base.num, st->time_base.den);
- avcodec_string(buf, sizeof(buf), st->codec, is_output);
- av_log(NULL, AV_LOG_INFO, " Stream #%d.%d", index, i);
- /* the pid is an important information, so we display it */
- /* XXX: add a generic system */
- if (flags & AVFMT_SHOW_IDS)
- av_log(NULL, AV_LOG_INFO, "[0x%x]", st->id);
- if (strlen(st->language) > 0)
- av_log(NULL, AV_LOG_INFO, "(%s)", st->language);
- av_log(NULL, AV_LOG_DEBUG, ", %d/%d", st->time_base.num/g, st->time_base.den/g);
- av_log(NULL, AV_LOG_INFO, ": %s", buf);
- if(st->codec->codec_type == CODEC_TYPE_VIDEO){
- if(st->r_frame_rate.den && st->r_frame_rate.num)
- av_log(NULL, AV_LOG_INFO, ", %5.2f tb(r)", av_q2d(st->r_frame_rate));
-/* else if(st->time_base.den && st->time_base.num)
- av_log(NULL, AV_LOG_INFO, ", %5.2f tb(m)", 1/av_q2d(st->time_base));*/
- else
- av_log(NULL, AV_LOG_INFO, ", %5.2f tb(c)", 1/av_q2d(st->codec->time_base));
- }
- av_log(NULL, AV_LOG_INFO, "\n");
-}
-
-void dump_format(AVFormatContext *ic,
- int index,
- const char *url,
- int is_output)
-{
- int i;
-
- av_log(NULL, AV_LOG_INFO, "%s #%d, %s, %s '%s':\n",
- is_output ? "Output" : "Input",
- index,
- is_output ? ic->oformat->name : ic->iformat->name,
- is_output ? "to" : "from", url);
- if (!is_output) {
- av_log(NULL, AV_LOG_INFO, " Duration: ");
- if (ic->duration != AV_NOPTS_VALUE) {
- int hours, mins, secs, us;
- secs = ic->duration / AV_TIME_BASE;
- us = ic->duration % AV_TIME_BASE;
- mins = secs / 60;
- secs %= 60;
- hours = mins / 60;
- mins %= 60;
- av_log(NULL, AV_LOG_INFO, "%02d:%02d:%02d.%02d", hours, mins, secs,
- (100 * us) / AV_TIME_BASE);
- } else {
- av_log(NULL, AV_LOG_INFO, "N/A");
- }
- if (ic->start_time != AV_NOPTS_VALUE) {
- int secs, us;
- av_log(NULL, AV_LOG_INFO, ", start: ");
- secs = ic->start_time / AV_TIME_BASE;
- us = ic->start_time % AV_TIME_BASE;
- av_log(NULL, AV_LOG_INFO, "%d.%06d",
- secs, (int)av_rescale(us, 1000000, AV_TIME_BASE));
- }
- av_log(NULL, AV_LOG_INFO, ", bitrate: ");
- if (ic->bit_rate) {
- av_log(NULL, AV_LOG_INFO,"%d kb/s", ic->bit_rate / 1000);
- } else {
- av_log(NULL, AV_LOG_INFO, "N/A");
- }
- av_log(NULL, AV_LOG_INFO, "\n");
- }
- if(ic->nb_programs) {
- int j, k;
- for(j=0; j<ic->nb_programs; j++) {
- av_log(NULL, AV_LOG_INFO, " Program %d %s\n", ic->programs[j]->id,
- ic->programs[j]->name ? ic->programs[j]->name : "");
- for(k=0; k<ic->programs[j]->nb_stream_indexes; k++)
- dump_stream_format(ic, ic->programs[j]->stream_index[k], index, is_output);
- }
- } else
- for(i=0;i<ic->nb_streams;i++)
- dump_stream_format(ic, i, index, is_output);
-}
-
-#if LIBAVFORMAT_VERSION_MAJOR < 53
-int parse_image_size(int *width_ptr, int *height_ptr, const char *str)
-{
- return av_parse_video_frame_size(width_ptr, height_ptr, str);
-}
-
-int parse_frame_rate(int *frame_rate_num, int *frame_rate_den, const char *arg)
-{
- AVRational frame_rate;
- int ret = av_parse_video_frame_rate(&frame_rate, arg);
- *frame_rate_num= frame_rate.num;
- *frame_rate_den= frame_rate.den;
- return ret;
-}
-#endif
-
-int64_t av_gettime(void)
-{
- struct timeval tv;
- gettimeofday(&tv,NULL);
- return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
-}
-
-int64_t parse_date(const char *datestr, int duration)
-{
- const char *p;
- int64_t t;
- struct tm dt;
- int i;
- static const char * const date_fmt[] = {
- "%Y-%m-%d",
- "%Y%m%d",
- };
- static const char * const time_fmt[] = {
- "%H:%M:%S",
- "%H%M%S",
- };
- const char *q;
- int is_utc, len;
- char lastch;
- int negative = 0;
-
-#undef time
- time_t now = time(0);
-
- len = strlen(datestr);
- if (len > 0)
- lastch = datestr[len - 1];
- else
- lastch = '\0';
- is_utc = (lastch == 'z' || lastch == 'Z');
-
- memset(&dt, 0, sizeof(dt));
-
- p = datestr;
- q = NULL;
- if (!duration) {
- /* parse the year-month-day part */
- for (i = 0; i < FF_ARRAY_ELEMS(date_fmt); i++) {
- q = small_strptime(p, date_fmt[i], &dt);
- if (q) {
- break;
- }
- }
-
- /* if the year-month-day part is missing, then take the
- * current year-month-day time */
- if (!q) {
- if (is_utc) {
- dt = *gmtime(&now);
- } else {
- dt = *localtime(&now);
- }
- dt.tm_hour = dt.tm_min = dt.tm_sec = 0;
- } else {
- p = q;
- }
-
- if (*p == 'T' || *p == 't' || *p == ' ')
- p++;
-
- /* parse the hour-minute-second part */
- for (i = 0; i < FF_ARRAY_ELEMS(time_fmt); i++) {
- q = small_strptime(p, time_fmt[i], &dt);
- if (q) {
- break;
- }
- }
- } else {
- /* parse datestr as a duration */
- if (p[0] == '-') {
- negative = 1;
- ++p;
- }
- /* parse datestr as HH:MM:SS */
- q = small_strptime(p, time_fmt[0], &dt);
- if (!q) {
- /* parse datestr as S+ */
- dt.tm_sec = strtol(p, (char **)&q, 10);
- if (q == p)
- /* the parsing didn't succeed */
- return INT64_MIN;
- dt.tm_min = 0;
- dt.tm_hour = 0;
- }
- }
-
- /* Now we have all the fields that we can get */
- if (!q) {
- return INT64_MIN;
- }
-
- if (duration) {
- t = dt.tm_hour * 3600 + dt.tm_min * 60 + dt.tm_sec;
- } else {
- dt.tm_isdst = -1; /* unknown */
- if (is_utc) {
- t = mktimegm(&dt);
- } else {
- t = mktime(&dt);
- }
- }
-
- t *= 1000000;
-
- /* parse the .m... part */
- if (*q == '.') {
- int val, n;
- q++;
- for (val = 0, n = 100000; n >= 1; n /= 10, q++) {
- if (!isdigit(*q))
- break;
- val += n * (*q - '0');
- }
- t += val;
- }
- return negative ? -t : t;
-}
-
-int find_info_tag(char *arg, int arg_size, const char *tag1, const char *info)
-{
- const char *p;
- char tag[128], *q;
-
- p = info;
- if (*p == '?')
- p++;
- for(;;) {
- q = tag;
- while (*p != '\0' && *p != '=' && *p != '&') {
- if ((q - tag) < sizeof(tag) - 1)
- *q++ = *p;
- p++;
- }
- *q = '\0';
- q = arg;
- if (*p == '=') {
- p++;
- while (*p != '&' && *p != '\0') {
- if ((q - arg) < arg_size - 1) {
- if (*p == '+')
- *q++ = ' ';
- else
- *q++ = *p;
- }
- p++;
- }
- *q = '\0';
- }
- if (!strcmp(tag, tag1))
- return 1;
- if (*p != '&')
- break;
- p++;
- }
- return 0;
-}
-
-int av_get_frame_filename(char *buf, int buf_size,
- const char *path, int number)
-{
- const char *p;
- char *q, buf1[20], c;
- int nd, len, percentd_found;
-
- q = buf;
- p = path;
- percentd_found = 0;
- for(;;) {
- c = *p++;
- if (c == '\0')
- break;
- if (c == '%') {
- do {
- nd = 0;
- while (isdigit(*p)) {
- nd = nd * 10 + *p++ - '0';
- }
- c = *p++;
- } while (isdigit(c));
-
- switch(c) {
- case '%':
- goto addchar;
- case 'd':
- if (percentd_found)
- goto fail;
- percentd_found = 1;
- snprintf(buf1, sizeof(buf1), "%0*d", nd, number);
- len = strlen(buf1);
- if ((q - buf + len) > buf_size - 1)
- goto fail;
- memcpy(q, buf1, len);
- q += len;
- break;
- default:
- goto fail;
- }
- } else {
- addchar:
- if ((q - buf) < buf_size - 1)
- *q++ = c;
- }
- }
- if (!percentd_found)
- goto fail;
- *q = '\0';
- return 0;
- fail:
- *q = '\0';
- return -1;
-}
-
-static void hex_dump_internal(void *avcl, FILE *f, int level, uint8_t *buf, int size)
-{
- int len, i, j, c;
-#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
-
- for(i=0;i<size;i+=16) {
- len = size - i;
- if (len > 16)
- len = 16;
- PRINT("%08x ", i);
- for(j=0;j<16;j++) {
- if (j < len)
- PRINT(" %02x", buf[i+j]);
- else
- PRINT(" ");
- }
- PRINT(" ");
- for(j=0;j<len;j++) {
- c = buf[i+j];
- if (c < ' ' || c > '~')
- c = '.';
- PRINT("%c", c);
- }
- PRINT("\n");
- }
-#undef PRINT
-}
-
-void av_hex_dump(FILE *f, uint8_t *buf, int size)
-{
- hex_dump_internal(NULL, f, 0, buf, size);
-}
-
-void av_hex_dump_log(void *avcl, int level, uint8_t *buf, int size)
-{
- hex_dump_internal(avcl, NULL, level, buf, size);
-}
-
- //FIXME needs to know the time_base
-static void pkt_dump_internal(void *avcl, FILE *f, int level, AVPacket *pkt, int dump_payload)
-{
-#define PRINT(...) do { if (!f) av_log(avcl, level, __VA_ARGS__); else fprintf(f, __VA_ARGS__); } while(0)
- PRINT("stream #%d:\n", pkt->stream_index);
- PRINT(" keyframe=%d\n", ((pkt->flags & PKT_FLAG_KEY) != 0));
- PRINT(" duration=%0.3f\n", (double)pkt->duration / AV_TIME_BASE);
- /* DTS is _always_ valid after av_read_frame() */
- PRINT(" dts=");
- if (pkt->dts == AV_NOPTS_VALUE)
- PRINT("N/A");
- else
- PRINT("%0.3f", (double)pkt->dts / AV_TIME_BASE);
- /* PTS may not be known if B-frames are present. */
- PRINT(" pts=");
- if (pkt->pts == AV_NOPTS_VALUE)
- PRINT("N/A");
- else
- PRINT("%0.3f", (double)pkt->pts / AV_TIME_BASE);
- PRINT("\n");
- PRINT(" size=%d\n", pkt->size);
-#undef PRINT
- if (dump_payload)
- av_hex_dump(f, pkt->data, pkt->size);
-}
-
-void av_pkt_dump(FILE *f, AVPacket *pkt, int dump_payload)
-{
- pkt_dump_internal(NULL, f, 0, pkt, dump_payload);
-}
-
-void av_pkt_dump_log(void *avcl, int level, AVPacket *pkt, int dump_payload)
-{
- pkt_dump_internal(avcl, NULL, level, pkt, dump_payload);
-}
-
-void url_split(char *proto, int proto_size,
- char *authorization, int authorization_size,
- char *hostname, int hostname_size,
- int *port_ptr,
- char *path, int path_size,
- const char *url)
-{
- const char *p, *ls, *at, *col, *brk;
-
- if (port_ptr) *port_ptr = -1;
- if (proto_size > 0) proto[0] = 0;
- if (authorization_size > 0) authorization[0] = 0;
- if (hostname_size > 0) hostname[0] = 0;
- if (path_size > 0) path[0] = 0;
-
- /* parse protocol */
- if ((p = strchr(url, ':'))) {
- av_strlcpy(proto, url, FFMIN(proto_size, p + 1 - url));
- p++; /* skip ':' */
- if (*p == '/') p++;
- if (*p == '/') p++;
- } else {
- /* no protocol means plain filename */
- av_strlcpy(path, url, path_size);
- return;
- }
-
- /* separate path from hostname */
- ls = strchr(p, '/');
- if(!ls)
- ls = strchr(p, '?');
- if(ls)
- av_strlcpy(path, ls, path_size);
- else
- ls = &p[strlen(p)]; // XXX
-
- /* the rest is hostname, use that to parse auth/port */
- if (ls != p) {
- /* authorization (user[:pass]@hostname) */
- if ((at = strchr(p, '@')) && at < ls) {
- av_strlcpy(authorization, p,
- FFMIN(authorization_size, at + 1 - p));
- p = at + 1; /* skip '@' */
- }
-
- if (*p == '[' && (brk = strchr(p, ']')) && brk < ls) {
- /* [host]:port */
- av_strlcpy(hostname, p + 1,
- FFMIN(hostname_size, brk - p));
- if (brk[1] == ':' && port_ptr)
- *port_ptr = atoi(brk + 2);
- } else if ((col = strchr(p, ':')) && col < ls) {
- av_strlcpy(hostname, p,
- FFMIN(col + 1 - p, hostname_size));
- if (port_ptr) *port_ptr = atoi(col + 1);
- } else
- av_strlcpy(hostname, p,
- FFMIN(ls + 1 - p, hostname_size));
- }
-}
-
-char *ff_data_to_hex(char *buff, const uint8_t *src, int s)
-{
- int i;
- static const char hex_table[16] = { '0', '1', '2', '3',
- '4', '5', '6', '7',
- '8', '9', 'A', 'B',
- 'C', 'D', 'E', 'F' };
-
- for(i = 0; i < s; i++) {
- buff[i * 2] = hex_table[src[i] >> 4];
- buff[i * 2 + 1] = hex_table[src[i] & 0xF];
- }
-
- return buff;
-}
-
-void av_set_pts_info(AVStream *s, int pts_wrap_bits,
- int pts_num, int pts_den)
-{
- unsigned int gcd= ff_gcd(pts_num, pts_den);
- s->pts_wrap_bits = pts_wrap_bits;
- s->time_base.num = pts_num/gcd;
- s->time_base.den = pts_den/gcd;
-
- if(gcd>1)
- av_log(NULL, AV_LOG_DEBUG, "st:%d removing common factor %d from timebase\n", s->index, gcd);
-}
Modified: trunk/libavformat/utils.c
==============================================================================
--- trunk/libavformat/utils.c Sat Jan 10 10:55:55 2009 (r16515)
+++ trunk/libavformat/utils.c Sat Jan 10 10:56:07 2009 (r16516)
@@ -381,63 +381,6 @@ static int set_codec_from_probe_data(AVS
/**
* Open a media file from an IO stream. 'fmt' must be specified.
*/
-static const char* format_to_name(void* ptr)
-{
- AVFormatContext* fc = (AVFormatContext*) ptr;
- if(fc->iformat) return fc->iformat->name;
- else if(fc->oformat) return fc->oformat->name;
- else return "NULL";
-}
-
-#define OFFSET(x) offsetof(AVFormatContext,x)
-#define DEFAULT 0 //should be NAN but it does not work as it is not a constant in glibc as required by ANSI/ISO C
-//these names are too long to be readable
-#define E AV_OPT_FLAG_ENCODING_PARAM
-#define D AV_OPT_FLAG_DECODING_PARAM
-
-static const AVOption options[]={
-{"probesize", NULL, OFFSET(probesize), FF_OPT_TYPE_INT, 32000, 32, INT_MAX, D}, /* 32000 from mpegts.c: 1.0 second at 24Mbit/s */
-{"muxrate", "set mux rate", OFFSET(mux_rate), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
-{"packetsize", "set packet size", OFFSET(packet_size), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
-{"fflags", NULL, OFFSET(flags), FF_OPT_TYPE_FLAGS, DEFAULT, INT_MIN, INT_MAX, D|E, "fflags"},
-{"ignidx", "ignore index", 0, FF_OPT_TYPE_CONST, AVFMT_FLAG_IGNIDX, INT_MIN, INT_MAX, D, "fflags"},
-{"genpts", "generate pts", 0, FF_OPT_TYPE_CONST, AVFMT_FLAG_GENPTS, INT_MIN, INT_MAX, D, "fflags"},
-{"track", " set the track number", OFFSET(track), FF_OPT_TYPE_INT, DEFAULT, 0, INT_MAX, E},
-{"year", "set the year", OFFSET(year), FF_OPT_TYPE_INT, DEFAULT, INT_MIN, INT_MAX, E},
-{"analyzeduration", "how many microseconds are analyzed to estimate duration", OFFSET(max_analyze_duration), FF_OPT_TYPE_INT, 3*AV_TIME_BASE, 0, INT_MAX, D},
-{"cryptokey", "decryption key", OFFSET(key), FF_OPT_TYPE_BINARY, 0, 0, 0, D},
-{"indexmem", "max memory used for timestamp index (per stream)", OFFSET(max_index_size), FF_OPT_TYPE_INT, 1<<20, 0, INT_MAX, D},
-{"rtbufsize", "max memory used for buffering real-time frames", OFFSET(max_picture_buffer), FF_OPT_TYPE_INT, 3041280, 0, INT_MAX, D}, /* defaults to 1s of 15fps 352x288 YUYV422 video */
-{"fdebug", "print specific debug info", OFFSET(debug), FF_OPT_TYPE_FLAGS, DEFAULT, 0, INT_MAX, E|D, "fdebug"},
-{"ts", NULL, 0, FF_OPT_TYPE_CONST, FF_FDEBUG_TS, INT_MIN, INT_MAX, E|D, "fdebug"},
-{NULL},
-};
-
-#undef E
-#undef D
-#undef DEFAULT
-
-static const AVClass av_format_context_class = { "AVFormatContext", format_to_name, options };
-
-static void avformat_get_context_defaults(AVFormatContext *s)
-{
- memset(s, 0, sizeof(AVFormatContext));
-
- s->av_class = &av_format_context_class;
-
- av_opt_set_defaults(s);
-}
-
-AVFormatContext *av_alloc_format_context(void)
-{
- AVFormatContext *ic;
- ic = av_malloc(sizeof(AVFormatContext));
- if (!ic) return ic;
- avformat_get_context_defaults(ic);
- ic->av_class = &av_format_context_class;
- return ic;
-}
-
int av_open_input_stream(AVFormatContext **ic_ptr,
ByteIOContext *pb, const char *filename,
AVInputFormat *fmt, AVFormatParameters *ap)
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