mirror of https://git.ffmpeg.org/ffmpeg.git
315 lines
9.6 KiB
C
315 lines
9.6 KiB
C
/*
|
|
* AIFF/AIFF-C muxer
|
|
* Copyright (c) 2006 Patrick Guimond
|
|
*
|
|
* 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 <stdint.h>
|
|
|
|
#include "libavutil/intfloat.h"
|
|
#include "libavutil/opt.h"
|
|
#include "avformat.h"
|
|
#include "internal.h"
|
|
#include "aiff.h"
|
|
#include "avio_internal.h"
|
|
#include "isom.h"
|
|
#include "id3v2.h"
|
|
|
|
typedef struct AIFFOutputContext {
|
|
const AVClass *class;
|
|
int64_t form;
|
|
int64_t frames;
|
|
int64_t ssnd;
|
|
int audio_stream_idx;
|
|
AVPacketList *pict_list, *pict_list_end;
|
|
int write_id3v2;
|
|
int id3v2_version;
|
|
} AIFFOutputContext;
|
|
|
|
static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
|
|
{
|
|
int ret;
|
|
uint64_t pos, end, size;
|
|
ID3v2EncContext id3v2 = { 0 };
|
|
AVIOContext *pb = s->pb;
|
|
AVPacketList *pict_list = aiff->pict_list;
|
|
|
|
if (!s->metadata && !aiff->pict_list)
|
|
return 0;
|
|
|
|
avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
|
|
avio_wb32(pb, 0);
|
|
pos = avio_tell(pb);
|
|
|
|
ff_id3v2_start(&id3v2, pb, aiff->id3v2_version, ID3v2_DEFAULT_MAGIC);
|
|
ff_id3v2_write_metadata(s, &id3v2);
|
|
while (pict_list) {
|
|
if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
|
|
return ret;
|
|
pict_list = pict_list->next;
|
|
}
|
|
ff_id3v2_finish(&id3v2, pb, s->metadata_header_padding);
|
|
|
|
end = avio_tell(pb);
|
|
size = end - pos;
|
|
|
|
/* Update chunk size */
|
|
avio_seek(pb, pos - 4, SEEK_SET);
|
|
avio_wb32(pb, size);
|
|
avio_seek(pb, end, SEEK_SET);
|
|
|
|
if (size & 1)
|
|
avio_w8(pb, 0);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
|
|
{
|
|
AVDictionaryEntry *tag;
|
|
AVIOContext *pb = s->pb;
|
|
|
|
if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
|
|
int size = strlen(tag->value);
|
|
|
|
avio_wl32(pb, id);
|
|
avio_wb32(pb, FFALIGN(size, 2));
|
|
avio_write(pb, tag->value, size);
|
|
if (size & 1)
|
|
avio_w8(pb, 0);
|
|
}
|
|
}
|
|
|
|
static int aiff_write_header(AVFormatContext *s)
|
|
{
|
|
AIFFOutputContext *aiff = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
AVCodecParameters *par;
|
|
uint64_t sample_rate;
|
|
int i, aifc = 0;
|
|
|
|
aiff->audio_stream_idx = -1;
|
|
for (i = 0; i < s->nb_streams; i++) {
|
|
AVStream *st = s->streams[i];
|
|
if (aiff->audio_stream_idx < 0 && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
|
|
aiff->audio_stream_idx = i;
|
|
} else if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
|
|
av_log(s, AV_LOG_ERROR, "AIFF allows only one audio stream and a picture.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
}
|
|
if (aiff->audio_stream_idx < 0) {
|
|
av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
|
|
par = s->streams[aiff->audio_stream_idx]->codecpar;
|
|
|
|
/* First verify if format is ok */
|
|
if (!par->codec_tag)
|
|
return AVERROR(EINVAL);
|
|
if (par->codec_tag != MKTAG('N','O','N','E'))
|
|
aifc = 1;
|
|
|
|
/* FORM AIFF header */
|
|
ffio_wfourcc(pb, "FORM");
|
|
aiff->form = avio_tell(pb);
|
|
avio_wb32(pb, 0); /* file length */
|
|
ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
|
|
|
|
if (aifc) { // compressed audio
|
|
if (!par->block_align) {
|
|
av_log(s, AV_LOG_ERROR, "block align not set\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
/* Version chunk */
|
|
ffio_wfourcc(pb, "FVER");
|
|
avio_wb32(pb, 4);
|
|
avio_wb32(pb, 0xA2805140);
|
|
}
|
|
|
|
if (par->channels > 2 && par->channel_layout) {
|
|
ffio_wfourcc(pb, "CHAN");
|
|
avio_wb32(pb, 12);
|
|
ff_mov_write_chan(pb, par->channel_layout);
|
|
}
|
|
|
|
put_meta(s, "title", MKTAG('N', 'A', 'M', 'E'));
|
|
put_meta(s, "author", MKTAG('A', 'U', 'T', 'H'));
|
|
put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
|
|
put_meta(s, "comment", MKTAG('A', 'N', 'N', 'O'));
|
|
|
|
/* Common chunk */
|
|
ffio_wfourcc(pb, "COMM");
|
|
avio_wb32(pb, aifc ? 24 : 18); /* size */
|
|
avio_wb16(pb, par->channels); /* Number of channels */
|
|
|
|
aiff->frames = avio_tell(pb);
|
|
avio_wb32(pb, 0); /* Number of frames */
|
|
|
|
if (!par->bits_per_coded_sample)
|
|
par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
|
|
if (!par->bits_per_coded_sample) {
|
|
av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
|
|
return AVERROR(EINVAL);
|
|
}
|
|
if (!par->block_align)
|
|
par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
|
|
|
|
avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
|
|
|
|
sample_rate = av_double2int(par->sample_rate);
|
|
avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
|
|
avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
|
|
|
|
if (aifc) {
|
|
avio_wl32(pb, par->codec_tag);
|
|
avio_wb16(pb, 0);
|
|
}
|
|
|
|
if ( (par->codec_tag == MKTAG('Q','D','M','2')
|
|
|| par->codec_tag == MKTAG('Q','c','l','p')) && par->extradata_size) {
|
|
ffio_wfourcc(pb, "wave");
|
|
avio_wb32(pb, par->extradata_size);
|
|
avio_write(pb, par->extradata, par->extradata_size);
|
|
}
|
|
|
|
/* Sound data chunk */
|
|
ffio_wfourcc(pb, "SSND");
|
|
aiff->ssnd = avio_tell(pb); /* Sound chunk size */
|
|
avio_wb32(pb, 0); /* Sound samples data size */
|
|
avio_wb32(pb, 0); /* Data offset */
|
|
avio_wb32(pb, 0); /* Block-size (block align) */
|
|
|
|
avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
|
|
s->streams[aiff->audio_stream_idx]->codecpar->sample_rate);
|
|
|
|
/* Data is starting here */
|
|
avio_flush(pb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
|
|
{
|
|
AIFFOutputContext *aiff = s->priv_data;
|
|
AVIOContext *pb = s->pb;
|
|
if (pkt->stream_index == aiff->audio_stream_idx)
|
|
avio_write(pb, pkt->data, pkt->size);
|
|
else {
|
|
if (s->streams[pkt->stream_index]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
|
|
return 0;
|
|
|
|
/* warn only once for each stream */
|
|
if (s->streams[pkt->stream_index]->nb_frames == 1) {
|
|
av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
|
|
" ignoring.\n", pkt->stream_index);
|
|
}
|
|
if (s->streams[pkt->stream_index]->nb_frames >= 1)
|
|
return 0;
|
|
|
|
return ff_packet_list_put(&aiff->pict_list, &aiff->pict_list_end,
|
|
pkt, FF_PACKETLIST_FLAG_REF_PACKET);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int aiff_write_trailer(AVFormatContext *s)
|
|
{
|
|
int ret = 0;
|
|
AVIOContext *pb = s->pb;
|
|
AIFFOutputContext *aiff = s->priv_data;
|
|
AVCodecParameters *par = s->streams[aiff->audio_stream_idx]->codecpar;
|
|
|
|
/* Chunks sizes must be even */
|
|
int64_t file_size, end_size;
|
|
end_size = file_size = avio_tell(pb);
|
|
if (file_size & 1) {
|
|
avio_w8(pb, 0);
|
|
end_size++;
|
|
}
|
|
|
|
if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
|
|
/* Number of sample frames */
|
|
avio_seek(pb, aiff->frames, SEEK_SET);
|
|
avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
|
|
|
|
/* Sound Data chunk size */
|
|
avio_seek(pb, aiff->ssnd, SEEK_SET);
|
|
avio_wb32(pb, file_size - aiff->ssnd - 4);
|
|
|
|
/* return to the end */
|
|
avio_seek(pb, end_size, SEEK_SET);
|
|
|
|
/* Write ID3 tags */
|
|
if (aiff->write_id3v2)
|
|
if ((ret = put_id3v2_tags(s, aiff)) < 0)
|
|
return ret;
|
|
|
|
/* File length */
|
|
file_size = avio_tell(pb);
|
|
avio_seek(pb, aiff->form, SEEK_SET);
|
|
avio_wb32(pb, file_size - aiff->form - 4);
|
|
|
|
avio_flush(pb);
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
static void aiff_deinit(AVFormatContext *s)
|
|
{
|
|
AIFFOutputContext *aiff = s->priv_data;
|
|
|
|
ff_packet_list_free(&aiff->pict_list, &aiff->pict_list_end);
|
|
}
|
|
|
|
#define OFFSET(x) offsetof(AIFFOutputContext, x)
|
|
#define ENC AV_OPT_FLAG_ENCODING_PARAM
|
|
static const AVOption options[] = {
|
|
{ "write_id3v2", "Enable ID3 tags writing.",
|
|
OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
|
|
{ "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
|
|
OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
|
|
{ NULL },
|
|
};
|
|
|
|
static const AVClass aiff_muxer_class = {
|
|
.class_name = "AIFF muxer",
|
|
.item_name = av_default_item_name,
|
|
.option = options,
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
};
|
|
|
|
AVOutputFormat ff_aiff_muxer = {
|
|
.name = "aiff",
|
|
.long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
|
|
.mime_type = "audio/aiff",
|
|
.extensions = "aif,aiff,afc,aifc",
|
|
.priv_data_size = sizeof(AIFFOutputContext),
|
|
.audio_codec = AV_CODEC_ID_PCM_S16BE,
|
|
.video_codec = AV_CODEC_ID_PNG,
|
|
.write_header = aiff_write_header,
|
|
.write_packet = aiff_write_packet,
|
|
.write_trailer = aiff_write_trailer,
|
|
.deinit = aiff_deinit,
|
|
.codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
|
|
.priv_class = &aiff_muxer_class,
|
|
};
|