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split voc.c into vocdec.c and vocenc.c 

Originally committed as revision 7145 to svn://svn.ffmpeg.org/ffmpeg/trunk
tags/v0.5
Aurelien Jacobs 19 years ago
parent
8cc622648b
commit
5d244b2932
4 changed files with 138 additions and 107 deletions
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  1. +3
    -3
      libavformat/Makefile
  2. +14
    -0
      libavformat/voc.h
  3. +0
    -104
      libavformat/vocdec.c
  4. +121
    -0
      libavformat/vocenc.c

+ 3
- 3
libavformat/Makefile View File

@@ -25,7 +25,7 @@ OBJS-$(CONFIG_AU_MUXER) += au.o riff.o
OBJS-$(CONFIG_AVI_DEMUXER) += avidec.o riff.o
OBJS-$(CONFIG_AVI_MUXER) += avienc.o riff.o
OBJS-$(CONFIG_AVISYNTH) += avisynth.o
OBJS-$(CONFIG_AVS_DEMUXER) += avs.o
OBJS-$(CONFIG_AVS_DEMUXER) += avs.o vocdec.o riff.o
OBJS-$(CONFIG_CRC_MUXER) += crc.o
OBJS-$(CONFIG_FRAMECRC_MUXER) += crc.o
OBJS-$(CONFIG_DAUD_DEMUXER) += daud.o
@@ -115,8 +115,8 @@ OBJS-$(CONFIG_SWF_DEMUXER) += swf.o
OBJS-$(CONFIG_SWF_MUXER) += swf.o
OBJS-$(CONFIG_TIERTEXSEQ_DEMUXER) += tiertexseq.o
OBJS-$(CONFIG_TTA_DEMUXER) += tta.o
OBJS-$(CONFIG_VOC_DEMUXER) += voc.o riff.o
OBJS-$(CONFIG_VOC_MUXER) += voc.o riff.o
OBJS-$(CONFIG_VOC_DEMUXER) += vocdec.o riff.o
OBJS-$(CONFIG_VOC_MUXER) += vocenc.o riff.o
OBJS-$(CONFIG_WAV_DEMUXER) += wav.o riff.o
OBJS-$(CONFIG_WAV_MUXER) += wav.o riff.o
OBJS-$(CONFIG_WC3_DEMUXER) += wc3movie.o


+ 14
- 0
libavformat/voc.h View File

@@ -28,6 +28,20 @@ typedef struct voc_dec_context {
int remaining_size;
} voc_dec_context_t;

typedef enum voc_type {
VOC_TYPE_EOF = 0x00,
VOC_TYPE_VOICE_DATA = 0x01,
VOC_TYPE_VOICE_DATA_CONT = 0x02,
VOC_TYPE_SILENCE = 0x03,
VOC_TYPE_MARKER = 0x04,
VOC_TYPE_ASCII = 0x05,
VOC_TYPE_REPETITION_START = 0x06,
VOC_TYPE_REPETITION_END = 0x07,
VOC_TYPE_EXTENDED = 0x08,
VOC_TYPE_NEW_VOICE_DATA = 0x09,
} voc_type_t;


int voc_get_packet(AVFormatContext *s, AVPacket *pkt,
AVStream *st, int max_size);



libavformat/voc.c → libavformat/vocdec.c View File

@@ -24,20 +24,6 @@
#include "voc.h"


typedef enum voc_type {
VOC_TYPE_EOF = 0x00,
VOC_TYPE_VOICE_DATA = 0x01,
VOC_TYPE_VOICE_DATA_CONT = 0x02,
VOC_TYPE_SILENCE = 0x03,
VOC_TYPE_MARKER = 0x04,
VOC_TYPE_ASCII = 0x05,
VOC_TYPE_REPETITION_START = 0x06,
VOC_TYPE_REPETITION_END = 0x07,
VOC_TYPE_EXTENDED = 0x08,
VOC_TYPE_NEW_VOICE_DATA = 0x09,
} voc_type_t;


static const int voc_max_pkt_size = 2048;
static const unsigned char voc_magic[] = "Creative Voice File\x1A";

@@ -54,8 +40,6 @@ static const CodecTag voc_codec_tags[] = {
};


#ifdef CONFIG_DEMUXERS

static int voc_probe(AVProbeData *p)
{
int version, check;
@@ -184,91 +168,3 @@ AVInputFormat voc_demuxer = {
voc_read_packet,
voc_read_close,
};

#endif /* CONFIG_DEMUXERS */


#ifdef CONFIG_MUXERS

typedef struct voc_enc_context {
int param_written;
} voc_enc_context_t;

static int voc_write_header(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
const int header_size = 26;
const int version = 0x0114;

if (s->nb_streams != 1
|| s->streams[0]->codec->codec_type != CODEC_TYPE_AUDIO)
return AVERROR_NOTSUPP;

put_buffer(pb, voc_magic, sizeof(voc_magic) - 1);
put_le16(pb, header_size);
put_le16(pb, version);
put_le16(pb, ~version + 0x1234);

return 0;
}

static int voc_write_packet(AVFormatContext *s, AVPacket *pkt)
{
voc_enc_context_t *voc = s->priv_data;
AVCodecContext *enc = s->streams[0]->codec;
ByteIOContext *pb = &s->pb;

if (!voc->param_written) {
int format = codec_get_tag(voc_codec_tags, enc->codec_id);

if (format > 0xFF) {
put_byte(pb, VOC_TYPE_NEW_VOICE_DATA);
put_le24(pb, pkt->size + 12);
put_le32(pb, enc->sample_rate);
put_byte(pb, enc->bits_per_sample);
put_byte(pb, enc->channels);
put_le16(pb, format);
put_le32(pb, 0);
} else {
if (s->streams[0]->codec->channels > 1) {
put_byte(pb, VOC_TYPE_EXTENDED);
put_le24(pb, 4);
put_le16(pb, 65536-256000000/(enc->sample_rate*enc->channels));
put_byte(pb, format);
put_byte(pb, enc->channels - 1);
}
put_byte(pb, VOC_TYPE_VOICE_DATA);
put_le24(pb, pkt->size + 2);
put_byte(pb, 256 - 1000000 / enc->sample_rate);
put_byte(pb, format);
}
voc->param_written = 1;
} else {
put_byte(pb, VOC_TYPE_VOICE_DATA_CONT);
put_le24(pb, pkt->size);
}

put_buffer(pb, pkt->data, pkt->size);
return 0;
}

static int voc_write_trailer(AVFormatContext *s)
{
put_byte(&s->pb, 0);
return 0;
}

AVOutputFormat voc_muxer = {
"voc",
"Creative Voice File format",
"audio/x-voc",
"voc",
sizeof(voc_enc_context_t),
CODEC_ID_PCM_U8,
CODEC_ID_NONE,
voc_write_header,
voc_write_packet,
voc_write_trailer,
};

#endif /* CONFIG_MUXERS */

+ 121
- 0
libavformat/vocenc.c View File

@@ -0,0 +1,121 @@
/*
* Creative Voice File muxer.
* Copyright (c) 2006 Aurelien Jacobs <aurel@gnuage.org>
*
* 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 St, Fifth Floor, Boston, MA 02110-1301 USA
*/

#include "avformat.h"
#include "riff.h" /* for CodecTag */
#include "voc.h"


static const unsigned char voc_magic[] = "Creative Voice File\x1A";

static const CodecTag voc_codec_tags[] = {
{CODEC_ID_PCM_U8, 0x00},
{CODEC_ID_ADPCM_SBPRO_4, 0x01},
{CODEC_ID_ADPCM_SBPRO_3, 0x02},
{CODEC_ID_ADPCM_SBPRO_2, 0x03},
{CODEC_ID_PCM_S16LE, 0x04},
{CODEC_ID_PCM_ALAW, 0x06},
{CODEC_ID_PCM_MULAW, 0x07},
{CODEC_ID_ADPCM_CT, 0x0200},
{0, 0},
};


typedef struct voc_enc_context {
int param_written;
} voc_enc_context_t;

static int voc_write_header(AVFormatContext *s)
{
ByteIOContext *pb = &s->pb;
const int header_size = 26;
const int version = 0x0114;

if (s->nb_streams != 1
|| s->streams[0]->codec->codec_type != CODEC_TYPE_AUDIO)
return AVERROR_NOTSUPP;

put_buffer(pb, voc_magic, sizeof(voc_magic) - 1);
put_le16(pb, header_size);
put_le16(pb, version);
put_le16(pb, ~version + 0x1234);

return 0;
}

static int voc_write_packet(AVFormatContext *s, AVPacket *pkt)
{
voc_enc_context_t *voc = s->priv_data;
AVCodecContext *enc = s->streams[0]->codec;
ByteIOContext *pb = &s->pb;

if (!voc->param_written) {
int format = codec_get_tag(voc_codec_tags, enc->codec_id);

if (format > 0xFF) {
put_byte(pb, VOC_TYPE_NEW_VOICE_DATA);
put_le24(pb, pkt->size + 12);
put_le32(pb, enc->sample_rate);
put_byte(pb, enc->bits_per_sample);
put_byte(pb, enc->channels);
put_le16(pb, format);
put_le32(pb, 0);
} else {
if (s->streams[0]->codec->channels > 1) {
put_byte(pb, VOC_TYPE_EXTENDED);
put_le24(pb, 4);
put_le16(pb, 65536-256000000/(enc->sample_rate*enc->channels));
put_byte(pb, format);
put_byte(pb, enc->channels - 1);
}
put_byte(pb, VOC_TYPE_VOICE_DATA);
put_le24(pb, pkt->size + 2);
put_byte(pb, 256 - 1000000 / enc->sample_rate);
put_byte(pb, format);
}
voc->param_written = 1;
} else {
put_byte(pb, VOC_TYPE_VOICE_DATA_CONT);
put_le24(pb, pkt->size);
}

put_buffer(pb, pkt->data, pkt->size);
return 0;
}

static int voc_write_trailer(AVFormatContext *s)
{
put_byte(&s->pb, 0);
return 0;
}

AVOutputFormat voc_muxer = {
"voc",
"Creative Voice File format",
"audio/x-voc",
"voc",
sizeof(voc_enc_context_t),
CODEC_ID_PCM_U8,
CODEC_ID_NONE,
voc_write_header,
voc_write_packet,
voc_write_trailer,
};

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