mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-12 02:04:58 +00:00
123 lines
3.5 KiB
C
123 lines
3.5 KiB
C
/*
|
|
* RAW PCM demuxers
|
|
* Copyright (c) 2002 Fabrice Bellard
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
#include "avformat.h"
|
|
#include "rawdec.h"
|
|
#include "pcm.h"
|
|
|
|
#define RAW_SAMPLES 1024
|
|
|
|
static int raw_read_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
int ret, size, bps;
|
|
// AVStream *st = s->streams[0];
|
|
|
|
size= RAW_SAMPLES*s->streams[0]->codec->block_align;
|
|
|
|
ret= av_get_packet(s->pb, pkt, size);
|
|
|
|
pkt->stream_index = 0;
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
bps= av_get_bits_per_sample(s->streams[0]->codec->codec_id);
|
|
assert(bps); // if false there IS a bug elsewhere (NOT in this function)
|
|
pkt->dts=
|
|
pkt->pts= pkt->pos*8 / (bps * s->streams[0]->codec->channels);
|
|
|
|
return ret;
|
|
}
|
|
|
|
#define PCMDEF(name, long_name, ext, codec) \
|
|
AVInputFormat pcm_ ## name ## _demuxer = {\
|
|
#name,\
|
|
NULL_IF_CONFIG_SMALL(long_name),\
|
|
0,\
|
|
NULL,\
|
|
ff_raw_read_header,\
|
|
raw_read_packet,\
|
|
NULL,\
|
|
pcm_read_seek,\
|
|
.flags= AVFMT_GENERIC_INDEX,\
|
|
.extensions = ext,\
|
|
.value = codec,\
|
|
};
|
|
|
|
PCMDEF(f64be, "PCM 64 bit floating-point big-endian format",
|
|
NULL, CODEC_ID_PCM_F64BE)
|
|
|
|
PCMDEF(f64le, "PCM 64 bit floating-point little-endian format",
|
|
NULL, CODEC_ID_PCM_F64LE)
|
|
|
|
PCMDEF(f32be, "PCM 32 bit floating-point big-endian format",
|
|
NULL, CODEC_ID_PCM_F32BE)
|
|
|
|
PCMDEF(f32le, "PCM 32 bit floating-point little-endian format",
|
|
NULL, CODEC_ID_PCM_F32LE)
|
|
|
|
PCMDEF(s32be, "PCM signed 32 bit big-endian format",
|
|
NULL, CODEC_ID_PCM_S32BE)
|
|
|
|
PCMDEF(s32le, "PCM signed 32 bit little-endian format",
|
|
NULL, CODEC_ID_PCM_S32LE)
|
|
|
|
PCMDEF(s24be, "PCM signed 24 bit big-endian format",
|
|
NULL, CODEC_ID_PCM_S24BE)
|
|
|
|
PCMDEF(s24le, "PCM signed 24 bit little-endian format",
|
|
NULL, CODEC_ID_PCM_S24LE)
|
|
|
|
PCMDEF(s16be, "PCM signed 16 bit big-endian format",
|
|
AV_NE("sw", NULL), CODEC_ID_PCM_S16BE)
|
|
|
|
PCMDEF(s16le, "PCM signed 16 bit little-endian format",
|
|
AV_NE(NULL, "sw"), CODEC_ID_PCM_S16LE)
|
|
|
|
PCMDEF(s8, "PCM signed 8 bit format",
|
|
"sb", CODEC_ID_PCM_S8)
|
|
|
|
PCMDEF(u32be, "PCM unsigned 32 bit big-endian format",
|
|
NULL, CODEC_ID_PCM_U32BE)
|
|
|
|
PCMDEF(u32le, "PCM unsigned 32 bit little-endian format",
|
|
NULL, CODEC_ID_PCM_U32LE)
|
|
|
|
PCMDEF(u24be, "PCM unsigned 24 bit big-endian format",
|
|
NULL, CODEC_ID_PCM_U24BE)
|
|
|
|
PCMDEF(u24le, "PCM unsigned 24 bit little-endian format",
|
|
NULL, CODEC_ID_PCM_U24LE)
|
|
|
|
PCMDEF(u16be, "PCM unsigned 16 bit big-endian format",
|
|
AV_NE("uw", NULL), CODEC_ID_PCM_U16BE)
|
|
|
|
PCMDEF(u16le, "PCM unsigned 16 bit little-endian format",
|
|
AV_NE(NULL, "uw"), CODEC_ID_PCM_U16LE)
|
|
|
|
PCMDEF(u8, "PCM unsigned 8 bit format",
|
|
"ub", CODEC_ID_PCM_U8)
|
|
|
|
PCMDEF(alaw, "PCM A-law format",
|
|
"al", CODEC_ID_PCM_ALAW)
|
|
|
|
PCMDEF(mulaw, "PCM mu-law format",
|
|
"ul", CODEC_ID_PCM_MULAW)
|