/*
- * WAV encoder and decoder
+ * WAV muxer and demuxer
* Copyright (c) 2001, 2002 Fabrice Bellard.
*
- * This library is free software; you can redistribute it and/or
+ * 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 of the License, or (at your option) any later version.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * 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 this library; if not, write to the Free Software
+ * 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 "allformats.h"
-#include "avi.h"
-
-const CodecTag codec_wav_tags[] = {
- { CODEC_ID_MP2, 0x50 },
- { CODEC_ID_MP3, 0x55 },
- { CODEC_ID_AC3, 0x2000 },
- { CODEC_ID_DTS, 0x2001 },
- { CODEC_ID_PCM_S16LE, 0x01 },
- { CODEC_ID_PCM_U8, 0x01 }, /* must come after s16le in this list */
- { CODEC_ID_PCM_S24LE, 0x01 },
- { CODEC_ID_PCM_S32LE, 0x01 },
- { CODEC_ID_PCM_ALAW, 0x06 },
- { CODEC_ID_PCM_MULAW, 0x07 },
- { CODEC_ID_ADPCM_MS, 0x02 },
- { CODEC_ID_ADPCM_IMA_WAV, 0x11 },
- { CODEC_ID_ADPCM_YAMAHA, 0x20 },
- { CODEC_ID_ADPCM_G726, 0x45 },
- { CODEC_ID_ADPCM_IMA_DK4, 0x61 }, /* rogue format number */
- { CODEC_ID_ADPCM_IMA_DK3, 0x62 }, /* rogue format number */
- { CODEC_ID_WMAV1, 0x160 },
- { CODEC_ID_WMAV2, 0x161 },
- { CODEC_ID_AAC, 0x706d },
- { CODEC_ID_VORBIS, ('V'<<8)+'o' }, //HACK/FIXME, does vorbis in WAV/AVI have an (in)official id?
- { CODEC_ID_SONIC, 0x2048 },
- { CODEC_ID_SONIC_LS, 0x2048 },
- { CODEC_ID_ADPCM_CT, 0x200 },
- { CODEC_ID_ADPCM_SWF, ('S'<<8)+'F' },
- { CODEC_ID_TRUESPEECH, 0x22 },
-
- // for NuppelVideo (nuv.c)
- { CODEC_ID_PCM_S16LE, MKTAG('R', 'A', 'W', 'A') },
- { CODEC_ID_MP3, MKTAG('L', 'A', 'M', 'E') },
- { 0, 0 },
-};
-
-#ifdef CONFIG_MUXERS
-/* WAVEFORMATEX header */
-/* returns the size or -1 on error */
-int put_wav_header(ByteIOContext *pb, AVCodecContext *enc)
-{
- int bps, blkalign, bytespersec;
- int hdrsize = 18;
-
- if(!enc->codec_tag || enc->codec_tag > 0xffff)
- enc->codec_tag = codec_get_tag(codec_wav_tags, enc->codec_id);
- if(!enc->codec_tag)
- return -1;
-
- put_le16(pb, enc->codec_tag);
- put_le16(pb, enc->channels);
- put_le32(pb, enc->sample_rate);
- if (enc->codec_id == CODEC_ID_PCM_U8 ||
- enc->codec_id == CODEC_ID_PCM_ALAW ||
- enc->codec_id == CODEC_ID_PCM_MULAW) {
- bps = 8;
- } else if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
- bps = 0;
- } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV || enc->codec_id == CODEC_ID_ADPCM_MS || enc->codec_id == CODEC_ID_ADPCM_G726 || enc->codec_id == CODEC_ID_ADPCM_YAMAHA) { //
- bps = 4;
- } else if (enc->codec_id == CODEC_ID_PCM_S24LE) {
- bps = 24;
- } else if (enc->codec_id == CODEC_ID_PCM_S32LE) {
- bps = 32;
- } else {
- bps = 16;
- }
-
- if (enc->codec_id == CODEC_ID_MP2 || enc->codec_id == CODEC_ID_MP3) {
- blkalign = enc->frame_size; //this is wrong, but seems many demuxers dont work if this is set correctly
- //blkalign = 144 * enc->bit_rate/enc->sample_rate;
- } else if (enc->codec_id == CODEC_ID_ADPCM_G726) { //
- blkalign = 1;
- } else if (enc->block_align != 0) { /* specified by the codec */
- blkalign = enc->block_align;
- } else
- blkalign = enc->channels*bps >> 3;
- if (enc->codec_id == CODEC_ID_PCM_U8 ||
- enc->codec_id == CODEC_ID_PCM_S24LE ||
- enc->codec_id == CODEC_ID_PCM_S32LE ||
- enc->codec_id == CODEC_ID_PCM_S16LE) {
- bytespersec = enc->sample_rate * blkalign;
- } else {
- bytespersec = enc->bit_rate / 8;
- }
- put_le32(pb, bytespersec); /* bytes per second */
- put_le16(pb, blkalign); /* block align */
- put_le16(pb, bps); /* bits per sample */
- if (enc->codec_id == CODEC_ID_MP3) {
- put_le16(pb, 12); /* wav_extra_size */
- hdrsize += 12;
- put_le16(pb, 1); /* wID */
- put_le32(pb, 2); /* fdwFlags */
- put_le16(pb, 1152); /* nBlockSize */
- put_le16(pb, 1); /* nFramesPerBlock */
- put_le16(pb, 1393); /* nCodecDelay */
- } else if (enc->codec_id == CODEC_ID_MP2) {
- put_le16(pb, 22); /* wav_extra_size */
- hdrsize += 22;
- put_le16(pb, 2); /* fwHeadLayer */
- put_le32(pb, enc->bit_rate); /* dwHeadBitrate */
- put_le16(pb, enc->channels == 2 ? 1 : 8); /* fwHeadMode */
- put_le16(pb, 0); /* fwHeadModeExt */
- put_le16(pb, 1); /* wHeadEmphasis */
- put_le16(pb, 16); /* fwHeadFlags */
- put_le32(pb, 0); /* dwPTSLow */
- put_le32(pb, 0); /* dwPTSHigh */
- } else if (enc->codec_id == CODEC_ID_ADPCM_IMA_WAV) {
- put_le16(pb, 2); /* wav_extra_size */
- hdrsize += 2;
- put_le16(pb, ((enc->block_align - 4 * enc->channels) / (4 * enc->channels)) * 8 + 1); /* wSamplesPerBlock */
- } else if(enc->extradata_size){
- put_le16(pb, enc->extradata_size);
- put_buffer(pb, enc->extradata, enc->extradata_size);
- hdrsize += enc->extradata_size;
- if(hdrsize&1){
- hdrsize++;
- put_byte(pb, 0);
- }
- } else {
- hdrsize -= 2;
- }
-
- return hdrsize;
-}
-#endif //CONFIG_MUXERS
-
-/* We could be given one of the three possible structures here:
- * WAVEFORMAT, PCMWAVEFORMAT or WAVEFORMATEX. Each structure
- * is an expansion of the previous one with the fields added
- * at the bottom. PCMWAVEFORMAT adds 'WORD wBitsPerSample' and
- * WAVEFORMATEX adds 'WORD cbSize' and basically makes itself
- * an openended structure.
- */
-void get_wav_header(ByteIOContext *pb, AVCodecContext *codec, int size)
-{
- int id;
-
- id = get_le16(pb);
- codec->codec_type = CODEC_TYPE_AUDIO;
- codec->codec_tag = id;
- codec->channels = get_le16(pb);
- codec->sample_rate = get_le32(pb);
- codec->bit_rate = get_le32(pb) * 8;
- codec->block_align = get_le16(pb);
- if (size == 14) { /* We're dealing with plain vanilla WAVEFORMAT */
- codec->bits_per_sample = 8;
- }else
- codec->bits_per_sample = get_le16(pb);
- codec->codec_id = wav_codec_get_id(id, codec->bits_per_sample);
-
- if (size > 16) { /* We're obviously dealing with WAVEFORMATEX */
- codec->extradata_size = get_le16(pb);
- if (codec->extradata_size > 0) {
- if (codec->extradata_size > size - 18)
- codec->extradata_size = size - 18;
- codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
- get_buffer(pb, codec->extradata, codec->extradata_size);
- } else
- codec->extradata_size = 0;
-
- /* It is possible for the chunk to contain garbage at the end */
- if (size - codec->extradata_size - 18 > 0)
- url_fskip(pb, size - codec->extradata_size - 18);
- }
-}
-
-
-int wav_codec_get_id(unsigned int tag, int bps)
-{
- int id;
- id = codec_get_id(codec_wav_tags, tag);
- if (id <= 0)
- return id;
- /* handle specific u8 codec */
- if (id == CODEC_ID_PCM_S16LE && bps == 8)
- id = CODEC_ID_PCM_U8;
- if (id == CODEC_ID_PCM_S16LE && bps == 24)
- id = CODEC_ID_PCM_S24LE;
- if (id == CODEC_ID_PCM_S16LE && bps == 32)
- id = CODEC_ID_PCM_S32LE;
- return id;
-}
+#include "raw.h"
+#include "riff.h"
typedef struct {
offset_t data;
offset_t data_end;
+ int64_t minpts;
+ int64_t maxpts;
+ int last_duration;
} WAVContext;
#ifdef CONFIG_MUXERS
static int wav_write_header(AVFormatContext *s)
{
WAVContext *wav = s->priv_data;
- ByteIOContext *pb = &s->pb;
- offset_t fmt;
+ ByteIOContext *pb = s->pb;
+ offset_t fmt, fact;
put_tag(pb, "RIFF");
put_le32(pb, 0); /* file length */
}
end_tag(pb, fmt);
+ if(s->streams[0]->codec->codec_tag != 0x01 /* hence for all other than PCM */
+ && !url_is_streamed(s->pb)) {
+ fact = start_tag(pb, "fact");
+ put_le32(pb, 0);
+ end_tag(pb, fact);
+ }
+
av_set_pts_info(s->streams[0], 64, 1, s->streams[0]->codec->sample_rate);
+ wav->maxpts = wav->last_duration = 0;
+ wav->minpts = INT64_MAX;
/* data header */
wav->data = start_tag(pb, "data");
static int wav_write_packet(AVFormatContext *s, AVPacket *pkt)
{
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
+ WAVContext *wav = s->priv_data;
put_buffer(pb, pkt->data, pkt->size);
+ if(pkt->pts != AV_NOPTS_VALUE) {
+ wav->minpts = FFMIN(wav->minpts, pkt->pts);
+ wav->maxpts = FFMAX(wav->maxpts, pkt->pts);
+ wav->last_duration = pkt->duration;
+ } else
+ av_log(s, AV_LOG_ERROR, "wav_write_packet: NOPTS\n");
return 0;
}
static int wav_write_trailer(AVFormatContext *s)
{
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
WAVContext *wav = s->priv_data;
offset_t file_size;
- if (!url_is_streamed(&s->pb)) {
+ if (!url_is_streamed(s->pb)) {
end_tag(pb, wav->data);
/* update file size */
url_fseek(pb, file_size, SEEK_SET);
put_flush_packet(pb);
+
+ if(s->streams[0]->codec->codec_tag != 0x01) {
+ /* Update num_samps in fact chunk */
+ int number_of_samples;
+ number_of_samples = av_rescale(wav->maxpts - wav->minpts + wav->last_duration,
+ s->streams[0]->codec->sample_rate * (int64_t)s->streams[0]->time_base.num,
+ s->streams[0]->time_base.den);
+ url_fseek(pb, wav->data-12, SEEK_SET);
+ put_le32(pb, number_of_samples);
+ url_fseek(pb, file_size, SEEK_SET);
+ put_flush_packet(pb);
+ }
}
return 0;
}
p->buf[2] == 'F' && p->buf[3] == 'F' &&
p->buf[8] == 'W' && p->buf[9] == 'A' &&
p->buf[10] == 'V' && p->buf[11] == 'E')
- return AVPROBE_SCORE_MAX;
+ /*
+ Since ACT demuxer has standard WAV header at top of it's own,
+ returning score is decreased to avoid probe conflict
+ between ACT and WAV.
+ */
+ return AVPROBE_SCORE_MAX - 1;
else
return 0;
}
{
int size;
unsigned int tag;
- ByteIOContext *pb = &s->pb;
+ ByteIOContext *pb = s->pb;
AVStream *st;
WAVContext *wav = s->priv_data;
return -1;
st = av_new_stream(s, 0);
if (!st)
- return AVERROR_NOMEM;
+ return AVERROR(ENOMEM);
get_wav_header(pb, st->codec, size);
- st->need_parsing = 1;
+ st->need_parsing = AVSTREAM_PARSE_FULL;
av_set_pts_info(st, 64, 1, st->codec->sample_rate);
AVStream *st;
WAVContext *wav = s->priv_data;
- if (url_feof(&s->pb))
- return AVERROR_IO;
+ if (url_feof(s->pb))
+ return AVERROR(EIO);
st = s->streams[0];
- left= wav->data_end - url_ftell(&s->pb);
+ left= wav->data_end - url_ftell(s->pb);
if(left <= 0){
- left = find_tag(&(s->pb), MKTAG('d', 'a', 't', 'a'));
+ left = find_tag(s->pb, MKTAG('d', 'a', 't', 'a'));
if (left < 0) {
- return AVERROR_IO;
+ return AVERROR(EIO);
}
- wav->data_end= url_ftell(&s->pb) + left;
+ wav->data_end= url_ftell(s->pb) + left;
}
size = MAX_SIZE;
size = (size / st->codec->block_align) * st->codec->block_align;
}
size= FFMIN(size, left);
- if (av_new_packet(pkt, size))
- return AVERROR_IO;
+ ret= av_get_packet(s->pb, pkt, size);
+ if (ret <= 0)
+ return AVERROR(EIO);
pkt->stream_index = 0;
- ret = get_buffer(&s->pb, pkt->data, pkt->size);
- if (ret < 0)
- av_free_packet(pkt);
/* note: we need to modify the packet size here to handle the last
packet */
pkt->size = ret;
return pcm_read_seek(s, stream_index, timestamp, flags);
}
-
-static AVInputFormat wav_demuxer = {
+#ifdef CONFIG_WAV_DEMUXER
+AVInputFormat wav_demuxer = {
"wav",
"wav format",
sizeof(WAVContext),
wav_read_packet,
wav_read_close,
wav_read_seek,
+ .flags= AVFMT_GENERIC_INDEX,
+ .codec_tag= (const AVCodecTag*[]){codec_wav_tags, 0},
};
-
-#ifdef CONFIG_MUXERS
-static AVOutputFormat wav_muxer = {
+#endif
+#ifdef CONFIG_WAV_MUXER
+AVOutputFormat wav_muxer = {
"wav",
"wav format",
"audio/x-wav",
wav_write_header,
wav_write_packet,
wav_write_trailer,
+ .codec_tag= (const AVCodecTag*[]){codec_wav_tags, 0},
};
-#endif //CONFIG_MUXERS
-
-int ff_wav_init(void)
-{
- av_register_input_format(&wav_demuxer);
-#ifdef CONFIG_MUXERS
- av_register_output_format(&wav_muxer);
-#endif //CONFIG_MUXERS
- return 0;
-}
+#endif
projects / ffmpeg / blobdiff