Author: bcoudurier
Date: Wed Jul 19 11:38:22 2006
New Revision: 5787
Added:
trunk/libavformat/gxf.h
trunk/libavformat/gxfenc.c
Modified:
trunk/MAINTAINERS
trunk/libavformat/Makefile
trunk/libavformat/allformats.c
trunk/libavformat/allformats.h
Log:
GXF muxer
Modified: trunk/MAINTAINERS
==============================================================================
--- trunk/MAINTAINERS (original)
+++ trunk/MAINTAINERS Wed Jul 19 11:38:22 2006
@@ -191,6 +191,7 @@
flic.c Mike Melanson
flvdec.c, flvenc.c Michael Niedermayer
gxf.c Reimar Doeffinger
+ gxfenc.c Baptiste Coudurier
idcin.c Mike Melanson
idroq.c Mike Melanson
ipmovie.c Mike Melanson
Modified: trunk/libavformat/Makefile
==============================================================================
--- trunk/libavformat/Makefile (original)
+++ trunk/libavformat/Makefile Wed Jul 19 11:38:22 2006
@@ -183,6 +183,10 @@
OBJS-$(CONFIG_OGG_MUXER) += ogg.o
endif
+ifeq ($(CONFIG_GPL),yes)
+OBJS-$(CONFIG_GXF_MUXER) += gxfenc.o
+endif
+
OBJS += $(OBJS-yes)
NAME=avformat
Modified: trunk/libavformat/allformats.c
==============================================================================
--- trunk/libavformat/allformats.c (original)
+++ trunk/libavformat/allformats.c Wed Jul 19 11:38:22 2006
@@ -138,6 +138,9 @@
#ifdef CONFIG_GXF_DEMUXER
av_register_input_format(&gxf_demuxer);
#endif
+#if defined(CONFIG_GXF_MUXER) && defined(CONFIG_GPL)
+ av_register_output_format(&gxf_muxer);
+#endif
#ifdef CONFIG_IDCIN_DEMUXER
av_register_input_format(&idcin_demuxer);
#endif
Modified: trunk/libavformat/allformats.h
==============================================================================
--- trunk/libavformat/allformats.h (original)
+++ trunk/libavformat/allformats.h Wed Jul 19 11:38:22 2006
@@ -35,6 +35,7 @@
extern AVInputFormat video_grab_device_demuxer;
extern AVInputFormat video_grab_device_demuxer;
extern AVInputFormat gxf_demuxer;
+extern AVOutputFormat gxf_muxer;
extern AVInputFormat idcin_demuxer;
extern AVInputFormat roq_demuxer;
extern AVInputFormat image2_demuxer;
Added: trunk/libavformat/gxf.h
==============================================================================
--- (empty file)
+++ trunk/libavformat/gxf.h Wed Jul 19 11:38:22 2006
@@ -0,0 +1,13 @@
+#ifndef FFMPEG_GXF_H
+#define FFMPEG_GXF_H
+
+/* gxf.c */
+typedef enum {
+ PKT_MAP = 0xbc,
+ PKT_MEDIA = 0xbf,
+ PKT_EOS = 0xfb,
+ PKT_FLT = 0xfc,
+ PKT_UMF = 0xfd
+} pkt_type_t;
+
+#endif /* FFMPEG_GXF_H */
Added: trunk/libavformat/gxfenc.c
==============================================================================
--- (empty file)
+++ trunk/libavformat/gxfenc.c Wed Jul 19 11:38:22 2006
@@ -0,0 +1,823 @@
+/*
+ * GXF muxer.
+ * Copyright (c) 2006 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com>.
+ *
+ * This library is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "avformat.h"
+#include "gxf.h"
+#include "riff.h"
+
+#define GXF_AUDIO_PACKET_SIZE 65536
+
+typedef struct GXFStreamContext {
+ AVCodecContext *codec;
+ FifoBuffer audio_buffer;
+ uint32_t track_type;
+ uint32_t sample_size;
+ uint32_t sample_rate;
+ uint16_t media_type;
+ uint16_t media_info;
+ uint8_t index;
+ int frame_rate_index;
+ int lines_index;
+ int fields;
+ int iframes;
+ int pframes;
+ int bframes;
+ int p_per_gop;
+ int b_per_gop;
+} GXFStreamContext;
+
+typedef struct GXFContext {
+ uint32_t nb_frames;
+ uint32_t material_flags;
+ uint16_t audio_tracks;
+ uint16_t mpeg_tracks;
+ int64_t creation_time;
+ uint32_t umf_start_offset;
+ uint32_t umf_track_offset;
+ uint32_t umf_media_offset;
+ uint32_t umf_user_data_offset;
+ uint32_t umf_user_data_size;
+ uint32_t umf_length;
+ uint16_t umf_track_size;
+ uint16_t umf_media_size;
+ int audio_written;
+ int sample_rate;
+ int field_number;
+ int flags;
+ AVFormatContext *fc;
+ GXFStreamContext streams[48];
+} GXFContext;
+
+typedef struct GXF_Lines {
+ int height;
+ int index;
+} GXF_Lines;
+
+
+/* FIXME check if it is relevant */
+static const GXF_Lines gxf_lines_tab[] = {
+ { 480, 1 }, /* NTSC */
+ { 512, 1 }, /* NTSC + VBI */
+ { 576, 2 }, /* PAL */
+ { 608, 2 }, /* PAL + VBI */
+ { 1080, 4 },
+ { 720, 6 },
+};
+
+static const CodecTag gxf_media_types[] = {
+ { CODEC_ID_MJPEG , 3 }, /* NTSC */
+ { CODEC_ID_MJPEG , 4 }, /* PAL */
+ { CODEC_ID_PCM_S24LE , 9 },
+ { CODEC_ID_PCM_S16LE , 10 },
+ { CODEC_ID_MPEG2VIDEO, 11 }, /* NTSC */
+ { CODEC_ID_MPEG2VIDEO, 12 }, /* PAL */
+ { CODEC_ID_DVVIDEO , 13 }, /* NTSC */
+ { CODEC_ID_DVVIDEO , 14 }, /* PAL */
+ { CODEC_ID_DVVIDEO , 15 }, /* 50M NTSC */
+ { CODEC_ID_DVVIDEO , 16 }, /* 50M PAL */
+ { CODEC_ID_AC3 , 17 },
+ //{ CODEC_ID_NONE, , 18 }, /* Non compressed 24 bit audio */
+ { CODEC_ID_MPEG2VIDEO, 20 }, /* MPEG HD */
+ { CODEC_ID_MPEG1VIDEO, 22 }, /* NTSC */
+ { CODEC_ID_MPEG1VIDEO, 23 }, /* PAL */
+ { 0, 0 },
+};
+
+#define SERVER_PATH "/space/"
+#define ES_NAME_PATTERN "ES."
+
+static int gxf_find_lines_index(GXFStreamContext *ctx)
+{
+ int i;
+
+ for (i = 0; i < 6; ++i) {
+ if (ctx->codec->height == gxf_lines_tab[i].height) {
+ ctx->lines_index = gxf_lines_tab[i].index;
+ return 0;
+ }
+ }
+ return -1;
+}
+
+static void gxf_write_padding(ByteIOContext *pb, offset_t to_pad)
+{
+ while (to_pad--) {
+ put_byte(pb, 0);
+ }
+}
+
+static offset_t updatePacketSize(ByteIOContext *pb, offset_t pos)
+{
+ offset_t curpos;
+ int size;
+
+ size = url_ftell(pb) - pos;
+ if (size % 4) {
+ gxf_write_padding(pb, 4 - size % 4);
+ size = url_ftell(pb) - pos;
+ }
+ curpos = url_ftell(pb);
+ url_fseek(pb, pos + 6, SEEK_SET);
+ put_be32(pb, size);
+ url_fseek(pb, curpos, SEEK_SET);
+ return curpos - pos;
+}
+
+static offset_t updateSize(ByteIOContext *pb, offset_t pos)
+{
+ offset_t curpos;
+
+ curpos = url_ftell(pb);
+ url_fseek(pb, pos, SEEK_SET);
+ put_be16(pb, curpos - pos - 2);
+ url_fseek(pb, curpos, SEEK_SET);
+ return curpos - pos;
+}
+
+static void gxf_write_packet_header(ByteIOContext *pb, pkt_type_t type)
+{
+ put_be32(pb, 0); /* packet leader for synchro */
+ put_byte(pb, 1);
+ put_byte(pb, type); /* map packet */
+ put_be32(pb, 0); /* size */
+ put_be32(pb, 0); /* reserved */
+ put_byte(pb, 0xE1); /* trailer 1 */
+ put_byte(pb, 0xE2); /* trailer 2 */
+}
+
+static int gxf_write_mpeg_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx)
+{
+ char buffer[1024];
+ int size;
+
+ if (ctx->iframes) {
+ ctx->p_per_gop = ctx->pframes / ctx->iframes;
+ if (ctx->pframes % ctx->iframes)
+ ctx->p_per_gop++;
+ if (ctx->pframes)
+ ctx->b_per_gop = ctx->bframes / ctx->pframes;
+ if (ctx->p_per_gop > 9)
+ ctx->p_per_gop = 9; /* ensure value won't take more than one char */
+ if (ctx->b_per_gop > 9)
+ ctx->b_per_gop = 9; /* ensure value won't take more than one char */
+ }
+ size = snprintf(buffer, 1024, "Ver 1\nBr %.6f\nIpg 1\nPpi %d\nBpiop %d\n"
+ "Pix 0\nCf %d\nCg 1\nSl 7\nnl16 %d\nVi 1\nf1 1\n",
+ (float)ctx->codec->bit_rate, ctx->p_per_gop, ctx->b_per_gop,
+ ctx->codec->pix_fmt == PIX_FMT_YUV422P ? 2 : 1,
+ ctx->codec->height / 16);
+ put_byte(pb, 0x4F);
+ put_byte(pb, size + 1);
+ put_buffer(pb, (uint8_t *)buffer, size + 1);
+ return size + 3;
+}
+
+static int gxf_write_timecode_auxiliary(ByteIOContext *pb, GXFStreamContext *ctx)
+{
+ /* FIXME implement that */
+ put_byte(pb, 0); /* fields */
+ put_byte(pb, 0); /* seconds */
+ put_byte(pb, 0); /* minutes */
+ put_byte(pb, 0); /* flags + hours */
+ /* reserved */
+ put_be32(pb, 0);
+ return 8;
+}
+
+static int gxf_write_track_description(ByteIOContext *pb, GXFStreamContext *stream)
+{
+ offset_t pos;
+
+ /* track description section */
+ put_byte(pb, stream->media_type + 0x80);
+ put_byte(pb, stream->index + 0xC0);
+
+ pos = url_ftell(pb);
+ put_be16(pb, 0); /* size */
+
+ /* media file name */
+ put_byte(pb, 0x4C);
+ put_byte(pb, strlen(ES_NAME_PATTERN) + 3);
+ put_tag(pb, ES_NAME_PATTERN);
+ put_be16(pb, stream->media_info);
+ put_byte(pb, 0);
+
+ if (stream->codec->codec_id != CODEC_ID_MPEG2VIDEO) {
+ /* auxiliary information */
+ put_byte(pb, 0x4D);
+ put_byte(pb, 8);
+ if (stream->codec->codec_id == CODEC_ID_NONE)
+ gxf_write_timecode_auxiliary(pb, stream);
+ else
+ put_le64(pb, 0);
+ }
+
+ /* file system version */
+ put_byte(pb, 0x4E);
+ put_byte(pb, 4);
+ put_be32(pb, 0);
+
+ if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO)
+ gxf_write_mpeg_auxiliary(pb, stream);
+
+ /* frame rate */
+ put_byte(pb, 0x50);
+ put_byte(pb, 4);
+ put_be32(pb, stream->frame_rate_index);
+
+ /* lines per frame */
+ put_byte(pb, 0x51);
+ put_byte(pb, 4);
+ put_be32(pb, stream->lines_index);
+
+ /* fields per frame */
+ put_byte(pb, 0x52);
+ put_byte(pb, 4);
+ put_be32(pb, stream->fields);
+
+ return updateSize(pb, pos);
+}
+
+static int gxf_write_material_data_section(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos;
+ const char *filename = strrchr(ctx->fc->filename, '/');
+
+ pos = url_ftell(pb);
+ put_be16(pb, 0); /* size */
+
+ /* name */
+ if (filename)
+ filename++;
+ else
+ filename = ctx->fc->filename;
+ put_byte(pb, 0x40);
+ put_byte(pb, strlen(SERVER_PATH) + strlen(filename) + 1);
+ put_tag(pb, SERVER_PATH);
+ put_tag(pb, filename);
+ put_byte(pb, 0);
+
+ /* first field */
+ put_byte(pb, 0x41);
+ put_byte(pb, 4);
+ put_be32(pb, 0);
+
+ /* last field */
+ put_byte(pb, 0x42);
+ put_byte(pb, 4);
+ put_be32(pb, ctx->nb_frames);
+
+ /* reserved */
+ put_byte(pb, 0x43);
+ put_byte(pb, 4);
+ put_be32(pb, 0);
+
+ put_byte(pb, 0x44);
+ put_byte(pb, 4);
+ put_be32(pb, ctx->nb_frames);
+
+ /* estimated size */
+ put_byte(pb, 0x45);
+ put_byte(pb, 4);
+ put_be32(pb, url_fsize(pb) / 1024);
+
+ return updateSize(pb, pos);
+}
+
+static int gxf_write_track_description_section(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos;
+ int i;
+
+ pos = url_ftell(pb);
+ put_be16(pb, 0); /* size */
+ for (i = 0; i < ctx->fc->nb_streams; ++i)
+ gxf_write_track_description(pb, &ctx->streams[i]);
+ return updateSize(pb, pos);
+}
+
+static int gxf_write_map_packet(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos = url_ftell(pb);
+
+ gxf_write_packet_header(pb, PKT_MAP);
+
+ /* preamble */
+ put_byte(pb, 0xE0); /* version */
+ put_byte(pb, 0xFF); /* reserved */
+
+ gxf_write_material_data_section(pb, ctx);
+ gxf_write_track_description_section(pb, ctx);
+
+ return updatePacketSize(pb, pos);
+}
+
+#if 0
+static int gxf_write_flt_packet(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos = url_ftell(pb);
+ int i;
+
+ gxf_write_packet_header(pb, PKT_FLT);
+
+ put_le32(pb, 1000); /* number of fields */
+ put_le32(pb, 0); /* number of active flt entries */
+
+ for (i = 0; i < 1000; ++i) {
+ put_le32(pb, 0);
+ }
+ return updatePacketSize(pb, pos);
+}
+#endif
+
+static int gxf_write_umf_material_description(ByteIOContext *pb, GXFContext *ctx)
+{
+ put_le32(pb, ctx->flags);
+ put_le32(pb, ctx->nb_frames); /* length of the longest track */
+ put_le32(pb, ctx->nb_frames); /* length of the shortest track */
+ put_le32(pb, 0); /* mark in */
+ put_le32(pb, ctx->nb_frames); /* mark out */
+ put_le32(pb, 0); /* timecode mark in */
+ put_le32(pb, ctx->nb_frames); /* timecode mark out */
+ put_le64(pb, ctx->fc->timestamp); /* modification time */
+ put_le64(pb, ctx->fc->timestamp); /* creation time */
+ put_le16(pb, 0); /* reserved */
+ put_le16(pb, 0); /* reserved */
+ put_le16(pb, ctx->audio_tracks);
+ put_le16(pb, 0); /* timecode track count */
+ put_le16(pb, 0); /* reserved */
+ put_le16(pb, ctx->mpeg_tracks);
+ return 48;
+}
+
+static int gxf_write_umf_payload(ByteIOContext *pb, GXFContext *ctx)
+{
+ put_le32(pb, ctx->umf_length); /* total length of the umf data */
+ put_le32(pb, 3); /* version */
+ put_le32(pb, ctx->fc->nb_streams);
+ put_le32(pb, ctx->umf_track_offset); /* umf track section offset */
+ put_le32(pb, ctx->umf_track_size);
+ put_le32(pb, ctx->fc->nb_streams);
+ put_le32(pb, ctx->umf_media_offset);
+ put_le32(pb, ctx->umf_media_size);
+ put_le32(pb, ctx->umf_user_data_offset); /* user data offset */
+ put_le32(pb, ctx->umf_user_data_size); /* user data size */
+ put_le32(pb, 0); /* reserved */
+ put_le32(pb, 0); /* reserved */
+ return 48;
+}
+
+static int gxf_write_umf_track_description(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos = url_ftell(pb);
+ int tracks[255]={0};
+ int i;
+
+ ctx->umf_track_offset = pos - ctx->umf_start_offset;
+ for (i = 0; i < ctx->fc->nb_streams; ++i) {
+ AVStream *st = ctx->fc->streams[i];
+ GXFStreamContext *sc = &ctx->streams[i];
+ int id = 0;
+
+ switch (st->codec->codec_id) {
+ case CODEC_ID_MPEG1VIDEO: id= 'L'; break;
+ case CODEC_ID_MPEG2VIDEO: id= 'M'; break;
+ case CODEC_ID_PCM_S16LE: id= 'A'; break;
+ case CODEC_ID_DVVIDEO: id= sc->track_type == 6 ? 'E' : 'D'; break;
+ case CODEC_ID_MJPEG: id= 'V'; break;
+ }
+ sc->media_info= id << 8;
+ /* FIXME first 10 audio tracks are 0 to 9 next 22 are A to V */
+ sc->media_info |= '0' + (tracks[id]++);
+ put_le16(pb, sc->media_info);
+ put_le16(pb, 1);
+ }
+ return url_ftell(pb) - pos;
+}
+
+static int gxf_write_umf_media_mpeg(ByteIOContext *pb, GXFStreamContext *stream)
+{
+ if (stream->codec->pix_fmt == PIX_FMT_YUV422P)
+ put_le32(pb, 2);
+ else
+ put_le32(pb, 1); /* default to 420 */
+ put_le32(pb, 1); /* closed = 1, open = 0, unknown = 255 */
+ put_le32(pb, 3); /* top = 1, bottom = 2, frame = 3, unknown = 0 */
+ put_le32(pb, 1); /* I picture per GOP */
+ put_le32(pb, stream->p_per_gop);
+ put_le32(pb, stream->b_per_gop);
+ if (stream->codec->codec_id == CODEC_ID_MPEG2VIDEO)
+ put_le32(pb, 2);
+ else if (stream->codec->codec_id == CODEC_ID_MPEG1VIDEO)
+ put_le32(pb, 1);
+ else
+ put_le32(pb, 0);
+ put_le32(pb, 0); /* reserved */
+ return 32;
+}
+
+static int gxf_write_umf_media_timecode(ByteIOContext *pb, GXFStreamContext *track)
+{
+ /* FIXME implement */
+ put_be32(pb, 0); /* drop frame flag */
+ put_be32(pb, 0); /* reserved */
+ put_be32(pb, 0); /* reserved */
+ put_be32(pb, 0); /* reserved */
+ put_be32(pb, 0); /* reserved */
+ put_be32(pb, 0); /* reserved */
+ put_be32(pb, 0); /* reserved */
+ put_be32(pb, 0); /* reserved */
+ return 32;
+}
+
+static int gxf_write_umf_media_dv(ByteIOContext *pb, GXFStreamContext *track)
+{
+ int i;
+
+ for (i = 0; i < 8; i++) {
+ put_be32(pb, 0);
+ }
+ return 32;
+}
+
+static int gxf_write_umf_media_audio(ByteIOContext *pb, GXFStreamContext *track)
+{
+ put_le64(pb, av_dbl2int(1)); /* sound level to begin to */
+ put_le64(pb, av_dbl2int(1)); /* sound level to begin to */
+ put_le32(pb, 0); /* number of fields over which to ramp up sound level */
+ put_le32(pb, 0); /* number of fields over which to ramp down sound level */
+ put_le32(pb, 0); /* reserved */
+ put_le32(pb, 0); /* reserved */
+ return 32;
+}
+
+#if 0
+static int gxf_write_umf_media_mjpeg(ByteIOContext *pb, GXFStreamContext *track)
+{
+ put_be64(pb, 0); /* FIXME FLOAT max chroma quant level */
+ put_be64(pb, 0); /* FIXME FLOAT max luma quant level */
+ put_be64(pb, 0); /* FIXME FLOAT min chroma quant level */
+ put_be64(pb, 0); /* FIXME FLOAT min luma quant level */
+ return 32;
+}
+#endif
+
+static int gxf_write_umf_media_description(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos;
+ int i;
+
+ pos = url_ftell(pb);
+ ctx->umf_media_offset = pos - ctx->umf_start_offset;
+ for (i = 0; i < ctx->fc->nb_streams; ++i) {
+ GXFStreamContext *sc = &ctx->streams[i];
+ char buffer[88];
+ offset_t startpos, curpos;
+ int path_size = strlen(ES_NAME_PATTERN);
+
+ startpos = url_ftell(pb);
+ put_le16(pb, 0); /* length */
+ put_le16(pb, sc->media_info);
+ put_le16(pb, 0); /* reserved */
+ put_le16(pb, 0); /* reserved */
+ put_le32(pb, ctx->nb_frames);
+ put_le32(pb, 0); /* attributes rw, ro */
+ put_le32(pb, 0); /* mark in */
+ put_le32(pb, ctx->nb_frames); /* mark out */
+ strncpy(buffer, ES_NAME_PATTERN, path_size);
+ put_buffer(pb, (uint8_t *)buffer, path_size);
+ put_be16(pb, sc->media_info);
+ put_buffer(pb, (uint8_t *)buffer + path_size + 2, 88 - path_size - 2);
+ put_le32(pb, sc->track_type);
+ put_le32(pb, sc->sample_rate);
+ put_le32(pb, sc->sample_size);
+ put_le32(pb, 0); /* reserved */
+ switch (sc->codec->codec_id) {
+ case CODEC_ID_MPEG2VIDEO:
+ gxf_write_umf_media_mpeg(pb, sc);
+ break;
+ case CODEC_ID_PCM_S16LE:
+ gxf_write_umf_media_audio(pb, sc);
+ break;
+ case CODEC_ID_DVVIDEO:
+ gxf_write_umf_media_dv(pb, sc);
+ break;
+ default:
+ gxf_write_umf_media_timecode(pb, sc); /* 8 0bytes */
+ }
+ curpos = url_ftell(pb);
+ url_fseek(pb, startpos, SEEK_SET);
+ put_le16(pb, curpos - startpos);
+ url_fseek(pb, curpos, SEEK_SET);
+ }
+ return url_ftell(pb) - pos;
+}
+
+static int gxf_write_umf_user_data(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos = url_ftell(pb);
+ ctx->umf_user_data_offset = pos - ctx->umf_start_offset;
+ put_le32(pb, 20);
+ put_le32(pb, 0);
+ put_le16(pb, 0);
+ put_le16(pb, 0);
+ put_le32(pb, 0);
+ put_byte(pb, 0);
+ put_byte(pb, 0);
+ put_byte(pb, 0);
+ put_byte(pb, 0);
+ return 20;
+}
+
+static int gxf_write_umf_packet(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos = url_ftell(pb);
+
+ gxf_write_packet_header(pb, PKT_UMF);
+
+ /* preamble */
+ put_byte(pb, 3); /* first and last (only) packet */
+ put_be32(pb, ctx->umf_length); /* data length */
+
+ ctx->umf_start_offset = url_ftell(pb);
+ gxf_write_umf_payload(pb, ctx);
+ gxf_write_umf_material_description(pb, ctx);
+ ctx->umf_track_size = gxf_write_umf_track_description(pb, ctx);
+ ctx->umf_media_size = gxf_write_umf_media_description(pb, ctx);
+ ctx->umf_user_data_size = gxf_write_umf_user_data(pb, ctx);
+ ctx->umf_length = url_ftell(pb) - ctx->umf_start_offset;
+ return updatePacketSize(pb, pos);
+}
+
+static int gxf_write_header(AVFormatContext *s)
+{
+ ByteIOContext *pb = &s->pb;
+ GXFContext *gxf = s->priv_data;
+ int i;
+
+ gxf->fc = s;
+ gxf->flags |= 0x00080000; /* material is simple clip */
+ for (i = 0; i < s->nb_streams; ++i) {
+ AVStream *st = s->streams[i];
+ GXFStreamContext *sc = &gxf->streams[i];
+
+ sc->codec = st->codec;
+ sc->index = i;
+ sc->media_type = codec_get_tag(gxf_media_types, sc->codec->codec_id);
+ if (st->codec->codec_type == CODEC_TYPE_AUDIO) {
+ if (st->codec->codec_id != CODEC_ID_PCM_S16LE) {
+ av_log(s, AV_LOG_ERROR, "only 16 BIT PCM LE allowed for now\n");
+ return -1;
+ }
+ if (st->codec->sample_rate != 48000) {
+ av_log(s, AV_LOG_ERROR, "only 48000hz sampling rate is allowed\n");
+ return -1;
+ }
+ if (st->codec->channels != 1) {
+ av_log(s, AV_LOG_ERROR, "only mono tracks are allowed\n");
+ return -1;
+ }
+ sc->track_type = 2;
+ sc->sample_rate = st->codec->sample_rate;
+ sc->sample_size = 16;
+ sc->frame_rate_index = -2;
+ sc->lines_index = -2;
+ sc->fields = -2;
+ gxf->audio_tracks++;
+ gxf->flags |= 0x04000000; /* audio is 16 bit pcm */
+ fifo_init(&sc->audio_buffer, 3*GXF_AUDIO_PACKET_SIZE);
+ } else if (sc->codec->codec_type == CODEC_TYPE_VIDEO) {
+ /* FIXME check from time_base ? */
+ if (sc->codec->height == 480 || sc->codec->height == 512) { /* NTSC or NTSC+VBI */
+ sc->frame_rate_index = 5;
+ sc->sample_rate = 60;
+ gxf->flags |= 0x00000080;
+ } else { /* assume PAL */
+ sc->frame_rate_index = 6;
+ sc->media_type++;
+ sc->sample_rate = 50;
+ gxf->flags |= 0x00000040;
+ }
+ gxf->sample_rate = sc->sample_rate;
+ if (gxf_find_lines_index(sc) < 0)
+ sc->lines_index = -1;
+ sc->sample_size = st->codec->bit_rate;
+ sc->fields = 2; /* interlaced */
+ switch (sc->codec->codec_id) {
+ case CODEC_ID_MPEG2VIDEO:
+ sc->track_type = 4;
+ gxf->mpeg_tracks++;
+ gxf->flags |= 0x00008000;
+ break;
+ case CODEC_ID_DVVIDEO:
+ if (sc->codec->pix_fmt == PIX_FMT_YUV422P) {
+ sc->media_type += 2;
+ sc->track_type = 6;
+ gxf->flags |= 0x00002000;
+ } else {
+ sc->track_type = 5;
+ gxf->flags |= 0x00001000;
+ }
+ break;
+ default:
+ av_log(NULL, AV_LOG_ERROR, "video codec not supported\n");
+ return -1;
+ }
+ }
+ }
+ gxf_write_map_packet(pb, gxf);
+ //gxf_write_flt_packet(pb, gxf);
+ gxf_write_umf_packet(pb, gxf);
+ put_flush_packet(pb);
+ return 0;
+}
+
+static int gxf_write_eos_packet(ByteIOContext *pb, GXFContext *ctx)
+{
+ offset_t pos = url_ftell(pb);
+
+ gxf_write_packet_header(pb, PKT_EOS);
+ return updatePacketSize(pb, pos);
+}
+
+static int gxf_write_trailer(AVFormatContext *s)
+{
+ ByteIOContext *pb = &s->pb;
+ GXFContext *gxf = s->priv_data;
+ offset_t end;
+ int i;
+
+ for (i = 0; i < s->nb_streams; ++i) {
+ if (s->streams[i]->codec->codec_type == CODEC_TYPE_AUDIO) {
+ fifo_free(&gxf->streams[i].audio_buffer);
+ }
+ if (s->streams[i]->codec->frame_number > gxf->nb_frames)
+ gxf->nb_frames = 2 * s->streams[i]->codec->frame_number;
+ }
+
+ gxf_write_eos_packet(pb, gxf);
+ end = url_ftell(pb);
+ url_fseek(pb, 0, SEEK_SET);
+ /* overwrite map and umf packets with new values */
+ gxf_write_map_packet(pb, gxf);
+ //gxf_write_flt_packet(pb, gxf);
+ gxf_write_umf_packet(pb, gxf);
+ url_fseek(pb, end, SEEK_SET);
+ return 0;
+}
+
+static int gxf_write_media_preamble(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt, int size)
+{
+ GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
+
+ put_byte(pb, sc->media_type);
+ put_byte(pb, sc->index);
+ put_be32(pb, ctx->field_number);
+ if (sc->codec->codec_type == CODEC_TYPE_AUDIO) {
+ put_be16(pb, 0);
+ put_be16(pb, size / 2);
+ } else if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO) {
+ if (pkt->flags & PKT_FLAG_KEY) {
+ put_byte(pb, 0x0d);
+ sc->iframes++;
+ } else if (pkt->pts != pkt->dts) {
+ put_byte(pb, 0x0f);
+ sc->bframes++;
+ } else {
+ put_byte(pb, 0x0e);
+ sc->pframes++;
+ }
+ put_be24(pb, size);
+ } else if (sc->codec->codec_id == CODEC_ID_DVVIDEO) {
+ put_byte(pb, size / 4096);
+ put_be24(pb, 0);
+ } else
+ put_be32(pb, size);
+ put_be32(pb, ctx->field_number);
+ put_byte(pb, 1); /* flags */
+ put_byte(pb, 0); /* reserved */
+ return 16;
+}
+
+static int gxf_write_media_packet(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt)
+{
+ GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
+ offset_t pos = url_ftell(pb);
+ int padding = 0;
+
+ gxf_write_packet_header(pb, PKT_MEDIA);
+ if (sc->codec->codec_id == CODEC_ID_MPEG2VIDEO && pkt->size % 4) /* MPEG-2 frames must be padded */
+ padding = 4 - pkt->size % 4;
+ gxf_write_media_preamble(pb, ctx, pkt, pkt->size + padding);
+ if (sc->codec->codec_type == CODEC_TYPE_AUDIO)
+ put_buffer(pb, pkt->data, GXF_AUDIO_PACKET_SIZE);
+ else {
+ ctx->field_number += 2;
+ put_buffer(pb, pkt->data, pkt->size);
+ }
+ gxf_write_padding(pb, padding);
+ return updatePacketSize(pb, pos);
+}
+
+static int gxf_write_packet(AVFormatContext *s, AVPacket *pkt)
+{
+ GXFContext *gxf = s->priv_data;
+
+ gxf_write_media_packet(&s->pb, gxf, pkt);
+ put_flush_packet(&s->pb);
+ return 0;
+}
+
+static int gxf_interleave_packet(AVFormatContext *s, AVPacket *out, AVPacket *pkt, int flush)
+{
+ AVPacketList *pktl, **next_point, *this_pktl;
+ GXFContext *gxf = s->priv_data;
+ GXFStreamContext *sc;
+ int i;
+
+ if (pkt) {
+ sc = &gxf->streams[pkt->stream_index];
+ if (sc->codec->codec_type == CODEC_TYPE_AUDIO) {
+ fifo_write(&sc->audio_buffer, pkt->data, pkt->size, NULL);
+ } else {
+ this_pktl = av_mallocz(sizeof(AVPacketList));
+ this_pktl->pkt = *pkt;
+ if(pkt->destruct == av_destruct_packet)
+ pkt->destruct = NULL; // non 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 *st= s->streams[ pkt->stream_index];
+ 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;
+ }
+ }
+
+ if (gxf->audio_written == gxf->audio_tracks) {
+ if (!s->packet_buffer) {
+ gxf->audio_written = 0;
+ return 0;
+ }
+ pktl = s->packet_buffer;
+ *out = pktl->pkt;
+ s->packet_buffer = pktl->next;
+ av_freep(&pktl);
+ return 1;
+ } else {
+ for (i = 0; i < s->nb_streams; i++) {
+ sc = &gxf->streams[i];
+ if (sc->codec->codec_type == CODEC_TYPE_AUDIO &&
+ (flush || fifo_size(&sc->audio_buffer, NULL) >= GXF_AUDIO_PACKET_SIZE)) {
+ int size = flush ? fifo_size(&sc->audio_buffer, NULL) : GXF_AUDIO_PACKET_SIZE;
+ av_new_packet(out, GXF_AUDIO_PACKET_SIZE);
+ fifo_read(&sc->audio_buffer, out->data, size, NULL);
+ gxf->audio_written++;
+ out->stream_index = i;
+ out->size = size;
+ return 1;
+ }
+ }
+ }
+ av_init_packet(out);
+ return 0;
+}
+
+AVOutputFormat gxf_muxer = {
+ "gxf",
+ "GXF format",
+ NULL,
+ "gxf",
+ sizeof(GXFContext),
+ CODEC_ID_PCM_S16LE,
+ CODEC_ID_MPEG2VIDEO,
+ gxf_write_header,
+ gxf_write_packet,
+ gxf_write_trailer,
+ 0,
+ NULL,
+ gxf_interleave_packet,
+};
