mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-18 03:19:31 +02:00
e37f161e66
* qatar/master: (71 commits) movenc: Allow writing to a non-seekable output if using empty moov movenc: Support adding isml (smooth streaming live) metadata libavcodec: Don't crash in avcodec_encode_audio if time_base isn't set sunrast: Document the different Sun Raster file format types. sunrast: Add a check for experimental type. libspeexenc: use AVSampleFormat instead of deprecated/removed SampleFormat lavf: remove disabled FF_API_SET_PTS_INFO cruft lavf: remove disabled FF_API_OLD_INTERRUPT_CB cruft lavf: remove disabled FF_API_REORDER_PRIVATE cruft lavf: remove disabled FF_API_SEEK_PUBLIC cruft lavf: remove disabled FF_API_STREAM_COPY cruft lavf: remove disabled FF_API_PRELOAD cruft lavf: remove disabled FF_API_NEW_STREAM cruft lavf: remove disabled FF_API_RTSP_URL_OPTIONS cruft lavf: remove disabled FF_API_MUXRATE cruft lavf: remove disabled FF_API_FILESIZE cruft lavf: remove disabled FF_API_TIMESTAMP cruft lavf: remove disabled FF_API_LOOP_OUTPUT cruft lavf: remove disabled FF_API_LOOP_INPUT cruft lavf: remove disabled FF_API_AVSTREAM_QUALITY cruft ... Conflicts: doc/APIchanges libavcodec/8bps.c libavcodec/avcodec.h libavcodec/libx264.c libavcodec/mjpegbdec.c libavcodec/options.c libavcodec/sunrast.c libavcodec/utils.c libavcodec/version.h libavcodec/x86/h264_deblock.asm libavdevice/libdc1394.c libavdevice/v4l2.c libavformat/avformat.h libavformat/avio.c libavformat/avio.h libavformat/aviobuf.c libavformat/dv.c libavformat/mov.c libavformat/utils.c libavformat/version.h libavformat/wtv.c libavutil/Makefile libavutil/file.c libswscale/x86/input.asm libswscale/x86/swscale_mmx.c libswscale/x86/swscale_template.c tests/ref/lavf/ffm Merged-by: Michael Niedermayer <michaelni@gmx.at>
107 lines
3.2 KiB
C
107 lines
3.2 KiB
C
/*
|
|
* Electronic Arts .cdata file Demuxer
|
|
* Copyright (c) 2007 Peter Ross
|
|
*
|
|
* This file is part of FFmpeg.
|
|
*
|
|
* FFmpeg 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 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* FFmpeg 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 FFmpeg; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
|
|
/**
|
|
* @file
|
|
* Electronic Arts cdata Format Demuxer
|
|
* by Peter Ross (pross@xvid.org)
|
|
*
|
|
* Technical details here:
|
|
* http://wiki.multimedia.cx/index.php?title=EA_Command_And_Conquer_3_Audio_Codec
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
|
|
typedef struct {
|
|
unsigned int channels;
|
|
unsigned int audio_pts;
|
|
} CdataDemuxContext;
|
|
|
|
static int cdata_probe(AVProbeData *p)
|
|
{
|
|
const uint8_t *b = p->buf;
|
|
|
|
if (b[0] == 0x04 && (b[1] == 0x00 || b[1] == 0x04 || b[1] == 0x0C || b[1] == 0x14))
|
|
return AVPROBE_SCORE_MAX/8;
|
|
return 0;
|
|
}
|
|
|
|
static int cdata_read_header(AVFormatContext *s)
|
|
{
|
|
CdataDemuxContext *cdata = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
unsigned int sample_rate, header;
|
|
AVStream *st;
|
|
int64_t channel_layout = 0;
|
|
|
|
header = avio_rb16(pb);
|
|
switch (header) {
|
|
case 0x0400: cdata->channels = 1; break;
|
|
case 0x0404: cdata->channels = 2; break;
|
|
case 0x040C: cdata->channels = 4; channel_layout = AV_CH_LAYOUT_QUAD; break;
|
|
case 0x0414: cdata->channels = 6; channel_layout = AV_CH_LAYOUT_5POINT1_BACK; break;
|
|
default:
|
|
av_log(s, AV_LOG_INFO, "unknown header 0x%04x\n", header);
|
|
return -1;
|
|
};
|
|
|
|
sample_rate = avio_rb16(pb);
|
|
avio_skip(pb, (avio_r8(pb) & 0x20) ? 15 : 11);
|
|
|
|
st = avformat_new_stream(s, NULL);
|
|
if (!st)
|
|
return AVERROR(ENOMEM);
|
|
st->codec->codec_type = AVMEDIA_TYPE_AUDIO;
|
|
st->codec->codec_tag = 0; /* no fourcc */
|
|
st->codec->codec_id = CODEC_ID_ADPCM_EA_XAS;
|
|
st->codec->channels = cdata->channels;
|
|
st->codec->channel_layout = channel_layout;
|
|
st->codec->sample_rate = sample_rate;
|
|
st->codec->sample_fmt = AV_SAMPLE_FMT_S16;
|
|
avpriv_set_pts_info(st, 64, 1, sample_rate);
|
|
|
|
cdata->audio_pts = 0;
|
|
return 0;
|
|
}
|
|
|
|
static int cdata_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
CdataDemuxContext *cdata = s->priv_data;
|
|
int packet_size = 76*cdata->channels;
|
|
|
|
int ret = av_get_packet(s->pb, pkt, packet_size);
|
|
if (ret < 0)
|
|
return ret;
|
|
pkt->pts = cdata->audio_pts++;
|
|
return 0;
|
|
}
|
|
|
|
AVInputFormat ff_ea_cdata_demuxer = {
|
|
.name = "ea_cdata",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Electronic Arts cdata"),
|
|
.priv_data_size = sizeof(CdataDemuxContext),
|
|
.read_probe = cdata_probe,
|
|
.read_header = cdata_read_header,
|
|
.read_packet = cdata_read_packet,
|
|
.extensions = "cdata",
|
|
};
|