Chiebot-Mirror
/
FFmpeg
mirror of https://github.com/FFmpeg/FFmpeg.git
8
0
Fork 0
Code Issues Projects Releases Wiki Activity

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

Browse Source 
Originally committed as revision 7145 to svn://svn.ffmpeg.org/ffmpeg/trunk
pull/126/head
Aurelien Jacobs 18 years ago
parent 8cc622648b
commit 5d244b2932
4 changed files with 138 additions and 107 deletions
Whitespace
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Split View
Diff Options
Show Stats Download Patch File Download Diff File
  1. 6
      libavformat/Makefile
  2. 14
      libavformat/voc.h
  3. 104
      libavformat/vocdec.c
  4. 121
      libavformat/vocenc.c

6
libavformat/Makefile
Unescape 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
libavformat/voc.h
Unescape 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);

104
libavformat/voc.c → libavformat/vocdec.c
Unescape 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
libavformat/vocenc.c
Unescape 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,
};
Write Preview
Loading…
Cancel
Save