2003-10-01 04:39:38 +00:00
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/*
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* Sega FILM Format (CPK) Demuxer
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* Copyright (c) 2003 The ffmpeg Project
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*
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2011-03-18 17:35:10 +00:00
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* This file is part of Libav.
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2006-10-07 15:30:46 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* Libav is free software; you can redistribute it and/or
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2003-10-01 04:39:38 +00:00
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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2006-10-07 15:30:46 +00:00
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* version 2.1 of the License, or (at your option) any later version.
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2003-10-01 04:39:38 +00:00
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*
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2011-03-18 17:35:10 +00:00
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* Libav is distributed in the hope that it will be useful,
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2003-10-01 04:39:38 +00:00
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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2011-03-18 17:35:10 +00:00
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* License along with Libav; if not, write to the Free Software
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2006-01-12 22:43:26 +00:00
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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2003-10-01 04:39:38 +00:00
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*/
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/**
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2010-04-20 14:45:34 +00:00
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* @file
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2003-10-01 04:39:38 +00:00
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* Sega FILM (.cpk) file demuxer
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* by Mike Melanson (melanson@pcisys.net)
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* For more information regarding the Sega FILM file format, visit:
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* http://www.pcisys.net/~melanson/codecs/
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*/
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2009-01-11 22:19:48 +00:00
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#include "libavutil/intreadwrite.h"
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2003-10-01 04:39:38 +00:00
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#include "avformat.h"
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2011-11-29 18:28:15 +00:00
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#include "internal.h"
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2003-10-01 04:39:38 +00:00
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2004-03-14 04:04:08 +00:00
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#define FILM_TAG MKBETAG('F', 'I', 'L', 'M')
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#define FDSC_TAG MKBETAG('F', 'D', 'S', 'C')
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#define STAB_TAG MKBETAG('S', 'T', 'A', 'B')
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#define CVID_TAG MKBETAG('c', 'v', 'i', 'd')
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2011-11-15 01:08:50 +00:00
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#define RAW_TAG MKBETAG('r', 'a', 'w', ' ')
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2003-10-01 04:39:38 +00:00
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typedef struct {
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int stream;
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2008-10-03 10:16:29 +00:00
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int64_t sample_offset;
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2003-10-01 04:39:38 +00:00
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unsigned int sample_size;
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int64_t pts;
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int keyframe;
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2008-12-14 03:29:33 +00:00
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} film_sample;
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2003-10-01 04:39:38 +00:00
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typedef struct FilmDemuxContext {
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int video_stream_index;
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int audio_stream_index;
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2012-08-05 09:11:04 +00:00
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enum AVCodecID audio_type;
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2003-10-01 04:39:38 +00:00
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unsigned int audio_samplerate;
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unsigned int audio_bits;
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unsigned int audio_channels;
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2012-08-05 09:11:04 +00:00
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enum AVCodecID video_type;
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2003-10-01 04:39:38 +00:00
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unsigned int sample_count;
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2008-12-14 03:29:33 +00:00
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film_sample *sample_table;
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2003-10-01 04:39:38 +00:00
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unsigned int current_sample;
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unsigned int base_clock;
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unsigned int version;
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/* buffer used for interleaving stereo PCM data */
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unsigned char *stereo_buffer;
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int stereo_buffer_size;
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} FilmDemuxContext;
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static int film_probe(AVProbeData *p)
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{
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2007-01-19 22:12:59 +00:00
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if (AV_RB32(&p->buf[0]) != FILM_TAG)
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2003-10-01 04:39:38 +00:00
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return 0;
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return AVPROBE_SCORE_MAX;
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}
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2012-01-12 12:20:36 +00:00
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static int film_read_header(AVFormatContext *s)
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2003-10-01 04:39:38 +00:00
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{
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2007-04-08 20:24:16 +00:00
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FilmDemuxContext *film = s->priv_data;
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2011-02-20 10:04:12 +00:00
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AVIOContext *pb = s->pb;
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2003-10-01 04:39:38 +00:00
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AVStream *st;
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unsigned char scratch[256];
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int i;
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unsigned int data_offset;
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unsigned int audio_frame_counter;
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film->sample_table = NULL;
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film->stereo_buffer = NULL;
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film->stereo_buffer_size = 0;
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/* load the main FILM header */
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2011-02-21 15:43:01 +00:00
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if (avio_read(pb, scratch, 16) != 16)
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2007-07-19 15:23:32 +00:00
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return AVERROR(EIO);
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2007-01-19 22:12:59 +00:00
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data_offset = AV_RB32(&scratch[4]);
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film->version = AV_RB32(&scratch[8]);
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2003-10-01 04:39:38 +00:00
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/* load the FDSC chunk */
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if (film->version == 0) {
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/* special case for Lemmings .film files; 20-byte header */
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2011-02-21 15:43:01 +00:00
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if (avio_read(pb, scratch, 20) != 20)
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2007-07-19 15:23:32 +00:00
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return AVERROR(EIO);
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2003-10-01 04:39:38 +00:00
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/* make some assumptions about the audio parameters */
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2012-08-05 09:11:04 +00:00
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film->audio_type = AV_CODEC_ID_PCM_S8;
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2003-10-01 04:39:38 +00:00
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film->audio_samplerate = 22050;
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film->audio_channels = 1;
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film->audio_bits = 8;
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} else {
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/* normal Saturn .cpk files; 32-byte header */
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2011-02-21 15:43:01 +00:00
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if (avio_read(pb, scratch, 32) != 32)
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2007-07-19 15:23:32 +00:00
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return AVERROR(EIO);
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2008-02-19 22:09:08 +00:00
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film->audio_samplerate = AV_RB16(&scratch[24]);
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2003-10-01 04:39:38 +00:00
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film->audio_channels = scratch[21];
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2013-09-19 13:02:29 +00:00
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if (!film->audio_channels || film->audio_channels > 2) {
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av_log(s, AV_LOG_ERROR,
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"Invalid number of channels: %d\n", film->audio_channels);
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return AVERROR_INVALIDDATA;
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}
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2003-10-01 04:39:38 +00:00
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film->audio_bits = scratch[22];
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2011-07-05 16:21:22 +00:00
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if (scratch[23] == 2)
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2012-08-05 09:11:04 +00:00
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film->audio_type = AV_CODEC_ID_ADPCM_ADX;
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2011-09-12 19:09:57 +00:00
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else if (film->audio_channels > 0) {
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if (film->audio_bits == 8)
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2012-08-05 09:11:04 +00:00
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film->audio_type = AV_CODEC_ID_PCM_S8;
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2011-09-12 19:09:57 +00:00
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else if (film->audio_bits == 16)
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2012-08-05 09:11:04 +00:00
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film->audio_type = AV_CODEC_ID_PCM_S16BE;
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2011-09-12 19:09:57 +00:00
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else
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2012-08-05 09:11:04 +00:00
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film->audio_type = AV_CODEC_ID_NONE;
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2011-09-12 19:09:57 +00:00
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} else
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2012-08-05 09:11:04 +00:00
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film->audio_type = AV_CODEC_ID_NONE;
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2003-10-01 04:39:38 +00:00
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}
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2007-01-19 22:12:59 +00:00
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if (AV_RB32(&scratch[0]) != FDSC_TAG)
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2003-10-01 04:39:38 +00:00
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return AVERROR_INVALIDDATA;
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2007-01-19 22:12:59 +00:00
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if (AV_RB32(&scratch[8]) == CVID_TAG) {
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2012-08-05 09:11:04 +00:00
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film->video_type = AV_CODEC_ID_CINEPAK;
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2011-11-15 01:08:50 +00:00
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} else if (AV_RB32(&scratch[8]) == RAW_TAG) {
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2012-08-05 09:11:04 +00:00
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film->video_type = AV_CODEC_ID_RAWVIDEO;
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2011-11-15 01:08:50 +00:00
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} else {
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2012-08-05 09:11:04 +00:00
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film->video_type = AV_CODEC_ID_NONE;
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2011-11-15 01:08:50 +00:00
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}
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2003-10-01 04:39:38 +00:00
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/* initialize the decoder streams */
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if (film->video_type) {
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2011-06-18 09:43:24 +00:00
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st = avformat_new_stream(s, NULL);
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2003-10-01 04:39:38 +00:00
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if (!st)
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2007-07-19 15:21:30 +00:00
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return AVERROR(ENOMEM);
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2003-10-01 04:39:38 +00:00
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film->video_stream_index = st->index;
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2010-03-30 23:30:55 +00:00
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st->codec->codec_type = AVMEDIA_TYPE_VIDEO;
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2005-07-17 22:24:36 +00:00
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st->codec->codec_id = film->video_type;
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st->codec->codec_tag = 0; /* no fourcc */
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2007-01-19 22:12:59 +00:00
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st->codec->width = AV_RB32(&scratch[16]);
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st->codec->height = AV_RB32(&scratch[12]);
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2011-11-15 01:08:50 +00:00
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2012-08-05 09:11:04 +00:00
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if (film->video_type == AV_CODEC_ID_RAWVIDEO) {
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2011-11-15 01:08:50 +00:00
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if (scratch[20] == 24) {
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2012-10-06 10:10:34 +00:00
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st->codec->pix_fmt = AV_PIX_FMT_RGB24;
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2011-11-15 01:08:50 +00:00
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} else {
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av_log(s, AV_LOG_ERROR, "raw video is using unhandled %dbpp\n", scratch[20]);
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return -1;
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}
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}
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2003-10-01 04:39:38 +00:00
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}
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if (film->audio_type) {
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2011-06-18 09:43:24 +00:00
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st = avformat_new_stream(s, NULL);
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2003-10-01 04:39:38 +00:00
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if (!st)
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2007-07-19 15:21:30 +00:00
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return AVERROR(ENOMEM);
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2003-10-01 04:39:38 +00:00
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film->audio_stream_index = st->index;
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2010-03-30 23:30:55 +00:00
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st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
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2005-07-17 22:24:36 +00:00
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st->codec->codec_id = film->audio_type;
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st->codec->codec_tag = 1;
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st->codec->channels = film->audio_channels;
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st->codec->sample_rate = film->audio_samplerate;
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2011-07-05 16:21:22 +00:00
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2012-08-05 09:11:04 +00:00
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if (film->audio_type == AV_CODEC_ID_ADPCM_ADX) {
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2011-07-05 16:21:22 +00:00
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st->codec->bits_per_coded_sample = 18 * 8 / 32;
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st->codec->block_align = st->codec->channels * 18;
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2011-11-21 06:49:37 +00:00
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st->need_parsing = AVSTREAM_PARSE_FULL;
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2011-07-05 16:21:22 +00:00
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} else {
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st->codec->bits_per_coded_sample = film->audio_bits;
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st->codec->block_align = st->codec->channels *
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st->codec->bits_per_coded_sample / 8;
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}
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2005-07-17 22:24:36 +00:00
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st->codec->bit_rate = st->codec->channels * st->codec->sample_rate *
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2008-09-08 14:24:59 +00:00
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st->codec->bits_per_coded_sample;
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2003-10-01 04:39:38 +00:00
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}
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/* load the sample table */
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2011-02-21 15:43:01 +00:00
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if (avio_read(pb, scratch, 16) != 16)
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2007-07-19 15:23:32 +00:00
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return AVERROR(EIO);
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2007-01-19 22:12:59 +00:00
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if (AV_RB32(&scratch[0]) != STAB_TAG)
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2003-10-01 04:39:38 +00:00
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return AVERROR_INVALIDDATA;
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2007-01-19 22:12:59 +00:00
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film->base_clock = AV_RB32(&scratch[8]);
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film->sample_count = AV_RB32(&scratch[12]);
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2008-12-14 03:29:33 +00:00
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if(film->sample_count >= UINT_MAX / sizeof(film_sample))
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2005-01-08 14:21:33 +00:00
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return -1;
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2008-12-14 03:29:33 +00:00
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film->sample_table = av_malloc(film->sample_count * sizeof(film_sample));
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2011-09-11 17:17:41 +00:00
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if (!film->sample_table)
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return AVERROR(ENOMEM);
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2005-12-17 18:14:38 +00:00
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2012-01-11 16:07:40 +00:00
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for (i = 0; i < s->nb_streams; i++) {
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st = s->streams[i];
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if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
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avpriv_set_pts_info(st, 33, 1, film->base_clock);
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else
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avpriv_set_pts_info(st, 64, 1, film->audio_samplerate);
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}
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2005-12-17 18:14:38 +00:00
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2003-10-01 04:39:38 +00:00
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audio_frame_counter = 0;
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for (i = 0; i < film->sample_count; i++) {
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/* load the next sample record and transfer it to an internal struct */
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2011-02-21 15:43:01 +00:00
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if (avio_read(pb, scratch, 16) != 16) {
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2003-10-01 04:39:38 +00:00
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av_free(film->sample_table);
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2007-07-19 15:23:32 +00:00
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return AVERROR(EIO);
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2003-10-01 04:39:38 +00:00
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}
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2005-12-17 18:14:38 +00:00
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film->sample_table[i].sample_offset =
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2007-01-19 22:12:59 +00:00
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data_offset + AV_RB32(&scratch[0]);
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film->sample_table[i].sample_size = AV_RB32(&scratch[4]);
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2013-08-13 05:40:38 +00:00
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if (film->sample_table[i].sample_size > INT_MAX / 4)
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return AVERROR_INVALIDDATA;
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2007-01-19 22:12:59 +00:00
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if (AV_RB32(&scratch[8]) == 0xFFFFFFFF) {
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2003-10-01 04:39:38 +00:00
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film->sample_table[i].stream = film->audio_stream_index;
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film->sample_table[i].pts = audio_frame_counter;
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2012-08-05 09:11:04 +00:00
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if (film->audio_type == AV_CODEC_ID_ADPCM_ADX)
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2011-07-05 16:21:22 +00:00
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audio_frame_counter += (film->sample_table[i].sample_size * 32 /
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(18 * film->audio_channels));
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2012-08-05 09:11:04 +00:00
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else if (film->audio_type != AV_CODEC_ID_NONE)
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2011-07-05 16:21:22 +00:00
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audio_frame_counter += (film->sample_table[i].sample_size /
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(film->audio_channels * film->audio_bits / 8));
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2003-10-01 04:39:38 +00:00
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} else {
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film->sample_table[i].stream = film->video_stream_index;
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2007-01-19 22:12:59 +00:00
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film->sample_table[i].pts = AV_RB32(&scratch[8]) & 0x7FFFFFFF;
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2003-10-01 04:39:38 +00:00
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film->sample_table[i].keyframe = (scratch[8] & 0x80) ? 0 : 1;
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}
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}
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film->current_sample = 0;
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return 0;
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}
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static int film_read_packet(AVFormatContext *s,
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AVPacket *pkt)
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{
|
2007-04-08 20:24:16 +00:00
|
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|
FilmDemuxContext *film = s->priv_data;
|
2011-02-20 10:04:12 +00:00
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AVIOContext *pb = s->pb;
|
2008-12-14 03:29:33 +00:00
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film_sample *sample;
|
2003-10-01 04:39:38 +00:00
|
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|
int ret = 0;
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int i;
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|
int left, right;
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if (film->current_sample >= film->sample_count)
|
2007-07-19 15:23:32 +00:00
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|
return AVERROR(EIO);
|
2003-10-01 04:39:38 +00:00
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|
|
sample = &film->sample_table[film->current_sample];
|
|
|
|
|
|
|
|
/* position the stream (will probably be there anyway) */
|
2011-02-28 13:57:54 +00:00
|
|
|
avio_seek(pb, sample->sample_offset, SEEK_SET);
|
2003-10-01 04:39:38 +00:00
|
|
|
|
|
|
|
/* do a special song and dance when loading FILM Cinepak chunks */
|
2005-12-17 18:14:38 +00:00
|
|
|
if ((sample->stream == film->video_stream_index) &&
|
2012-08-05 09:11:04 +00:00
|
|
|
(film->video_type == AV_CODEC_ID_CINEPAK)) {
|
2011-03-03 19:11:45 +00:00
|
|
|
pkt->pos= avio_tell(pb);
|
2006-12-02 21:28:05 +00:00
|
|
|
if (av_new_packet(pkt, sample->sample_size))
|
2007-07-19 15:21:30 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2011-02-21 15:43:01 +00:00
|
|
|
avio_read(pb, pkt->data, sample->sample_size);
|
2003-10-01 04:39:38 +00:00
|
|
|
} else if ((sample->stream == film->audio_stream_index) &&
|
2011-07-05 16:21:22 +00:00
|
|
|
(film->audio_channels == 2) &&
|
2012-08-05 09:11:04 +00:00
|
|
|
(film->audio_type != AV_CODEC_ID_ADPCM_ADX)) {
|
2003-10-01 04:39:38 +00:00
|
|
|
/* stereo PCM needs to be interleaved */
|
|
|
|
|
|
|
|
if (av_new_packet(pkt, sample->sample_size))
|
2007-07-19 15:21:30 +00:00
|
|
|
return AVERROR(ENOMEM);
|
2003-10-01 04:39:38 +00:00
|
|
|
|
|
|
|
/* make sure the interleave buffer is large enough */
|
|
|
|
if (sample->sample_size > film->stereo_buffer_size) {
|
|
|
|
av_free(film->stereo_buffer);
|
|
|
|
film->stereo_buffer_size = sample->sample_size;
|
|
|
|
film->stereo_buffer = av_malloc(film->stereo_buffer_size);
|
2011-10-06 20:53:41 +00:00
|
|
|
if (!film->stereo_buffer) {
|
|
|
|
film->stereo_buffer_size = 0;
|
|
|
|
return AVERROR(ENOMEM);
|
|
|
|
}
|
2003-10-01 04:39:38 +00:00
|
|
|
}
|
|
|
|
|
2011-03-03 19:11:45 +00:00
|
|
|
pkt->pos= avio_tell(pb);
|
2011-02-21 15:43:01 +00:00
|
|
|
ret = avio_read(pb, film->stereo_buffer, sample->sample_size);
|
2003-10-01 04:39:38 +00:00
|
|
|
if (ret != sample->sample_size)
|
2007-07-19 15:23:32 +00:00
|
|
|
ret = AVERROR(EIO);
|
2003-10-01 04:39:38 +00:00
|
|
|
|
|
|
|
left = 0;
|
|
|
|
right = sample->sample_size / 2;
|
|
|
|
for (i = 0; i < sample->sample_size; ) {
|
|
|
|
if (film->audio_bits == 8) {
|
|
|
|
pkt->data[i++] = film->stereo_buffer[left++];
|
|
|
|
pkt->data[i++] = film->stereo_buffer[right++];
|
|
|
|
} else {
|
|
|
|
pkt->data[i++] = film->stereo_buffer[left++];
|
|
|
|
pkt->data[i++] = film->stereo_buffer[left++];
|
|
|
|
pkt->data[i++] = film->stereo_buffer[right++];
|
|
|
|
pkt->data[i++] = film->stereo_buffer[right++];
|
|
|
|
}
|
|
|
|
}
|
|
|
|
} else {
|
2005-05-26 20:17:12 +00:00
|
|
|
ret= av_get_packet(pb, pkt, sample->sample_size);
|
2003-10-01 04:39:38 +00:00
|
|
|
if (ret != sample->sample_size)
|
2007-07-19 15:23:32 +00:00
|
|
|
ret = AVERROR(EIO);
|
2003-10-01 04:39:38 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
pkt->stream_index = sample->stream;
|
|
|
|
pkt->pts = sample->pts;
|
|
|
|
|
|
|
|
film->current_sample++;
|
|
|
|
|
|
|
|
return ret;
|
|
|
|
}
|
|
|
|
|
|
|
|
static int film_read_close(AVFormatContext *s)
|
|
|
|
{
|
2007-04-08 20:24:16 +00:00
|
|
|
FilmDemuxContext *film = s->priv_data;
|
2003-10-01 04:39:38 +00:00
|
|
|
|
|
|
|
av_free(film->sample_table);
|
|
|
|
av_free(film->stereo_buffer);
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
AVInputFormat ff_segafilm_demuxer = {
|
2011-07-16 20:18:12 +00:00
|
|
|
.name = "film_cpk",
|
2012-07-24 21:51:41 +00:00
|
|
|
.long_name = NULL_IF_CONFIG_SMALL("Sega FILM / CPK"),
|
2011-07-16 20:18:12 +00:00
|
|
|
.priv_data_size = sizeof(FilmDemuxContext),
|
|
|
|
.read_probe = film_probe,
|
|
|
|
.read_header = film_read_header,
|
|
|
|
.read_packet = film_read_packet,
|
|
|
|
.read_close = film_read_close,
|
2003-10-01 04:39:38 +00:00
|
|
|
};
|