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1ebbb493cc
If the write_id3v2 option is set, the aiff muxer would write id3v2 tags
if there is global metadata or if there are attached pics to write.
Chapters are ignored in this check that precedes writing id3v2 tags.
Yet 47ac344970 added support for writing
chapters as id3v2 tags, so one should check for the existence of chapters,
too; otherwise the chapters would only be written in case there is
global metadata or an attached pic.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt@gmail.com>
310 lines
9.5 KiB
C
310 lines
9.5 KiB
C
/*
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* AIFF/AIFF-C muxer
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* Copyright (c) 2006 Patrick Guimond
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <stdint.h>
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#include "libavutil/intfloat.h"
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#include "libavutil/opt.h"
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#include "avformat.h"
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#include "internal.h"
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#include "aiff.h"
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#include "avio_internal.h"
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#include "isom.h"
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#include "id3v2.h"
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typedef struct AIFFOutputContext {
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const AVClass *class;
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int64_t form;
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int64_t frames;
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int64_t ssnd;
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int audio_stream_idx;
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AVPacketList *pict_list, *pict_list_end;
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int write_id3v2;
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int id3v2_version;
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} AIFFOutputContext;
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static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
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{
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int ret;
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uint64_t pos, end, size;
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ID3v2EncContext id3v2 = { 0 };
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AVIOContext *pb = s->pb;
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AVPacketList *pict_list = aiff->pict_list;
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if (!s->metadata && !s->nb_chapters && !aiff->pict_list)
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return 0;
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avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
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avio_wb32(pb, 0);
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pos = avio_tell(pb);
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ff_id3v2_start(&id3v2, pb, aiff->id3v2_version, ID3v2_DEFAULT_MAGIC);
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ff_id3v2_write_metadata(s, &id3v2);
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while (pict_list) {
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if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
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return ret;
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pict_list = pict_list->next;
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}
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ff_id3v2_finish(&id3v2, pb, s->metadata_header_padding);
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end = avio_tell(pb);
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size = end - pos;
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/* Update chunk size */
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avio_seek(pb, pos - 4, SEEK_SET);
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avio_wb32(pb, size);
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avio_seek(pb, end, SEEK_SET);
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if (size & 1)
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avio_w8(pb, 0);
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return 0;
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}
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static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
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{
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AVDictionaryEntry *tag;
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AVIOContext *pb = s->pb;
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if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
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int size = strlen(tag->value);
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avio_wl32(pb, id);
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avio_wb32(pb, FFALIGN(size, 2));
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avio_write(pb, tag->value, size);
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if (size & 1)
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avio_w8(pb, 0);
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}
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}
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static int aiff_write_header(AVFormatContext *s)
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{
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AIFFOutputContext *aiff = s->priv_data;
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AVIOContext *pb = s->pb;
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AVCodecParameters *par;
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uint64_t sample_rate;
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int i, aifc = 0;
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aiff->audio_stream_idx = -1;
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for (i = 0; i < s->nb_streams; i++) {
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AVStream *st = s->streams[i];
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if (aiff->audio_stream_idx < 0 && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
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aiff->audio_stream_idx = i;
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} else if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
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av_log(s, AV_LOG_ERROR, "AIFF allows only one audio stream and a picture.\n");
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return AVERROR(EINVAL);
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}
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}
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if (aiff->audio_stream_idx < 0) {
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av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
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return AVERROR(EINVAL);
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}
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par = s->streams[aiff->audio_stream_idx]->codecpar;
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/* First verify if format is ok */
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if (!par->codec_tag)
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return AVERROR(EINVAL);
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if (par->codec_tag != MKTAG('N','O','N','E'))
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aifc = 1;
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/* FORM AIFF header */
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ffio_wfourcc(pb, "FORM");
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aiff->form = avio_tell(pb);
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avio_wb32(pb, 0); /* file length */
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ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
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if (aifc) { // compressed audio
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if (!par->block_align) {
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av_log(s, AV_LOG_ERROR, "block align not set\n");
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return AVERROR(EINVAL);
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}
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/* Version chunk */
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ffio_wfourcc(pb, "FVER");
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avio_wb32(pb, 4);
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avio_wb32(pb, 0xA2805140);
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}
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if (par->channels > 2 && par->channel_layout) {
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ffio_wfourcc(pb, "CHAN");
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avio_wb32(pb, 12);
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ff_mov_write_chan(pb, par->channel_layout);
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}
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put_meta(s, "title", MKTAG('N', 'A', 'M', 'E'));
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put_meta(s, "author", MKTAG('A', 'U', 'T', 'H'));
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put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
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put_meta(s, "comment", MKTAG('A', 'N', 'N', 'O'));
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/* Common chunk */
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ffio_wfourcc(pb, "COMM");
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avio_wb32(pb, aifc ? 24 : 18); /* size */
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avio_wb16(pb, par->channels); /* Number of channels */
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aiff->frames = avio_tell(pb);
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avio_wb32(pb, 0); /* Number of frames */
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if (!par->bits_per_coded_sample)
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par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
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if (!par->bits_per_coded_sample) {
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av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
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return AVERROR(EINVAL);
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}
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if (!par->block_align)
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par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
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avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
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sample_rate = av_double2int(par->sample_rate);
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avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
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avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
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if (aifc) {
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avio_wl32(pb, par->codec_tag);
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avio_wb16(pb, 0);
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}
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if ( (par->codec_tag == MKTAG('Q','D','M','2')
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|| par->codec_tag == MKTAG('Q','c','l','p')) && par->extradata_size) {
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ffio_wfourcc(pb, "wave");
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avio_wb32(pb, par->extradata_size);
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avio_write(pb, par->extradata, par->extradata_size);
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}
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/* Sound data chunk */
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ffio_wfourcc(pb, "SSND");
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aiff->ssnd = avio_tell(pb); /* Sound chunk size */
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avio_wb32(pb, 0); /* Sound samples data size */
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avio_wb32(pb, 0); /* Data offset */
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avio_wb32(pb, 0); /* Block-size (block align) */
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avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
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s->streams[aiff->audio_stream_idx]->codecpar->sample_rate);
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return 0;
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}
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static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
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{
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AIFFOutputContext *aiff = s->priv_data;
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AVIOContext *pb = s->pb;
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if (pkt->stream_index == aiff->audio_stream_idx)
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avio_write(pb, pkt->data, pkt->size);
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else {
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if (s->streams[pkt->stream_index]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
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return 0;
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/* warn only once for each stream */
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if (s->streams[pkt->stream_index]->nb_frames == 1) {
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av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
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" ignoring.\n", pkt->stream_index);
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}
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if (s->streams[pkt->stream_index]->nb_frames >= 1)
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return 0;
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return ff_packet_list_put(&aiff->pict_list, &aiff->pict_list_end,
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pkt, FF_PACKETLIST_FLAG_REF_PACKET);
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}
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return 0;
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}
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static int aiff_write_trailer(AVFormatContext *s)
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{
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int ret = 0;
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AVIOContext *pb = s->pb;
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AIFFOutputContext *aiff = s->priv_data;
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AVCodecParameters *par = s->streams[aiff->audio_stream_idx]->codecpar;
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/* Chunks sizes must be even */
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int64_t file_size, end_size;
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end_size = file_size = avio_tell(pb);
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if (file_size & 1) {
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avio_w8(pb, 0);
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end_size++;
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}
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if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
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/* Number of sample frames */
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avio_seek(pb, aiff->frames, SEEK_SET);
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avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
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/* Sound Data chunk size */
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avio_seek(pb, aiff->ssnd, SEEK_SET);
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avio_wb32(pb, file_size - aiff->ssnd - 4);
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/* return to the end */
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avio_seek(pb, end_size, SEEK_SET);
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/* Write ID3 tags */
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if (aiff->write_id3v2)
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if ((ret = put_id3v2_tags(s, aiff)) < 0)
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return ret;
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/* File length */
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file_size = avio_tell(pb);
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avio_seek(pb, aiff->form, SEEK_SET);
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avio_wb32(pb, file_size - aiff->form - 4);
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}
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return ret;
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}
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static void aiff_deinit(AVFormatContext *s)
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{
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AIFFOutputContext *aiff = s->priv_data;
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ff_packet_list_free(&aiff->pict_list, &aiff->pict_list_end);
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}
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#define OFFSET(x) offsetof(AIFFOutputContext, x)
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#define ENC AV_OPT_FLAG_ENCODING_PARAM
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static const AVOption options[] = {
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{ "write_id3v2", "Enable ID3 tags writing.",
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OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
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{ "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
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OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
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{ NULL },
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};
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static const AVClass aiff_muxer_class = {
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.class_name = "AIFF muxer",
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.item_name = av_default_item_name,
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.option = options,
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.version = LIBAVUTIL_VERSION_INT,
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};
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AVOutputFormat ff_aiff_muxer = {
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.name = "aiff",
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.long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
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.mime_type = "audio/aiff",
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.extensions = "aif,aiff,afc,aifc",
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.priv_data_size = sizeof(AIFFOutputContext),
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.audio_codec = AV_CODEC_ID_PCM_S16BE,
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.video_codec = AV_CODEC_ID_PNG,
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.write_header = aiff_write_header,
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.write_packet = aiff_write_packet,
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.write_trailer = aiff_write_trailer,
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.deinit = aiff_deinit,
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.codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
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.priv_class = &aiff_muxer_class,
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};
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