Update of /cvsroot/ffmpeg/ffmpeg/libavformat In directory mail:/var2/tmp/cvs-serv22032 Modified Files: Makefile allformats.c avformat.h Added Files: tta.c Log Message: tta demuxer, also usable for moving tta audio data into an other container --- NEW FILE: tta.c --- /* * TTA demuxer * Copyright (c) 2006 Alex Beregszaszi * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "avformat.h" #define ALT_BITSREAM_READER_LE #include "bitstream.h" typedef struct { int totalframes, currentframe; uint32_t *seektable; } TTAContext; static int tta_probe(AVProbeData *p) { const uint8_t *d = p->buf; if (p->buf_size < 4) return 0; if (d[0] == 'T' && d[1] == 'T' && d[2] == 'A' && d[3] == '1') return 80; return 0; } static int tta_read_header(AVFormatContext *s, AVFormatParameters *ap) { TTAContext *c = s->priv_data; AVStream *st; int i, channels, bps, samplerate, datalen, framelen, start; start = url_ftell(&s->pb); if (get_le32(&s->pb) != ff_get_fourcc("TTA1")) return -1; // not tta file url_fskip(&s->pb, 2); // FIXME: flags channels = get_le16(&s->pb); bps = get_le16(&s->pb); samplerate = get_le32(&s->pb); datalen = get_le32(&s->pb); url_fskip(&s->pb, 4); // header crc framelen = 1.04489795918367346939 * samplerate; c->totalframes = datalen / framelen + ((datalen % framelen) ? 1 : 0); c->currentframe = 0; c->seektable = av_mallocz(sizeof(uint32_t)*c->totalframes); if (!c->seektable) return AVERROR_NOMEM; for (i = 0; i < c->totalframes; i++) c->seektable[i] = get_le32(&s->pb); url_fskip(&s->pb, 4); // seektable crc st = av_new_stream(s, 0); // av_set_pts_info(st, 32, 1, 1000); if (!st) return AVERROR_NOMEM; st->codec->codec_type = CODEC_TYPE_AUDIO; st->codec->codec_id = CODEC_ID_TTA; st->codec->channels = channels; st->codec->sample_rate = samplerate; st->codec->bits_per_sample = bps; st->codec->extradata_size = url_ftell(&s->pb) - start; st->codec->extradata = av_mallocz(st->codec->extradata_size); url_fseek(&s->pb, start, SEEK_SET); // or SEEK_CUR and -size ? :) get_buffer(&s->pb, st->codec->extradata, st->codec->extradata_size); return 0; } static int tta_read_packet(AVFormatContext *s, AVPacket *pkt) { TTAContext *c = s->priv_data; int ret, size; // FIXME! if (c->currentframe > c->totalframes) size = 0; else size = c->seektable[c->currentframe]; c->currentframe++; if (av_new_packet(pkt, size) < 0) return AVERROR_IO; pkt->pos = url_ftell(&s->pb); pkt->stream_index = 0; ret = get_buffer(&s->pb, pkt->data, size); if (ret <= 0) { av_free_packet(pkt); return AVERROR_IO; } pkt->size = ret; // av_log(s, AV_LOG_INFO, "TTA packet #%d desired size: %d read size: %d at pos %d\n", // c->currentframe, size, ret, pkt->pos); return 0; //ret; } static int tta_read_close(AVFormatContext *s) { TTAContext *c = s->priv_data; if (c->seektable) av_free(c->seektable); return 0; } AVInputFormat tta_iformat = { "tta", "true-audio", sizeof(TTAContext), tta_probe, tta_read_header, tta_read_packet, tta_read_close, .extensions = "tta", }; int tta_init(void) { av_register_input_format(&tta_iformat); return 0; } Index: Makefile =================================================================== RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/Makefile,v retrieving revision 1.121 retrieving revision 1.122 diff -u -d -r1.121 -r1.122 --- Makefile 11 Feb 2006 20:51:26 -0000 1.121 +++ Makefile 12 Feb 2006 02:18:37 -0000 1.122 @@ -23,7 +23,7 @@ nut.o wc3movie.o mp3.o westwood.o segafilm.o idcin.o flic.o \ sierravmd.o matroska.o sol.o electronicarts.o nsvdec.o asf.o \ ogg2.o oggparsevorbis.o oggparsetheora.o oggparseflac.o daud.o aiff.o \ - voc.o + voc.o tta.o # muxers ifeq ($(CONFIG_MUXERS),yes) Index: allformats.c =================================================================== RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/allformats.c,v retrieving revision 1.57 retrieving revision 1.58 diff -u -d -r1.57 -r1.58 --- allformats.c 10 Feb 2006 01:24:32 -0000 1.57 +++ allformats.c 12 Feb 2006 02:18:37 -0000 1.58 @@ -116,6 +116,7 @@ nsvdec_init(); daud_init(); voc_init(); + tta_init(); #ifdef CONFIG_MUXERS /* image formats */ Index: avformat.h =================================================================== RCS file: /cvsroot/ffmpeg/ffmpeg/libavformat/avformat.h,v retrieving revision 1.141 retrieving revision 1.142 diff -u -d -r1.141 -r1.142 --- avformat.h 10 Feb 2006 01:24:32 -0000 1.141 +++ avformat.h 12 Feb 2006 02:18:37 -0000 1.142 @@ -555,6 +555,9 @@ /* voc.c */ int voc_init(void); +/* tta.c */ +int tta_init(void); + /* adts.c */ int ff_adts_init(void);