3 * Copyright (c) 2006 Patrick Guimond
5 * This file is part of FFmpeg.
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
24 #include "libavutil/intfloat.h"
25 #include "libavutil/opt.h"
29 #include "avio_internal.h"
33 typedef struct AIFFOutputContext {
39 AVPacketList *pict_list;
44 static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
47 uint64_t pos, end, size;
48 ID3v2EncContext id3v2 = { 0 };
49 AVIOContext *pb = s->pb;
50 AVPacketList *pict_list = aiff->pict_list;
52 if (!pb->seekable & AVIO_SEEKABLE_NORMAL)
55 if (!s->metadata && !aiff->pict_list)
58 avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
62 ff_id3v2_start(&id3v2, pb, aiff->id3v2_version, ID3v2_DEFAULT_MAGIC);
63 ff_id3v2_write_metadata(s, &id3v2);
65 if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
67 pict_list = pict_list->next;
69 ff_id3v2_finish(&id3v2, pb, s->metadata_header_padding);
74 /* Update chunk size */
75 avio_seek(pb, pos - 4, SEEK_SET);
77 avio_seek(pb, end, SEEK_SET);
85 static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
87 AVDictionaryEntry *tag;
88 AVIOContext *pb = s->pb;
90 if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
91 int size = strlen(tag->value);
94 avio_wb32(pb, FFALIGN(size, 2));
95 avio_write(pb, tag->value, size);
101 static int aiff_write_header(AVFormatContext *s)
103 AIFFOutputContext *aiff = s->priv_data;
104 AVIOContext *pb = s->pb;
105 AVCodecParameters *par;
106 uint64_t sample_rate;
109 aiff->audio_stream_idx = -1;
110 for (i = 0; i < s->nb_streams; i++) {
111 AVStream *st = s->streams[i];
112 if (aiff->audio_stream_idx < 0 && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
113 aiff->audio_stream_idx = i;
114 } else if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
115 av_log(s, AV_LOG_ERROR, "AIFF allows only one audio stream and a picture.\n");
116 return AVERROR(EINVAL);
119 if (aiff->audio_stream_idx < 0) {
120 av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
121 return AVERROR(EINVAL);
124 par = s->streams[aiff->audio_stream_idx]->codecpar;
126 /* First verify if format is ok */
129 if (par->codec_tag != MKTAG('N','O','N','E'))
132 /* FORM AIFF header */
133 ffio_wfourcc(pb, "FORM");
134 aiff->form = avio_tell(pb);
135 avio_wb32(pb, 0); /* file length */
136 ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
138 if (aifc) { // compressed audio
139 if (!par->block_align) {
140 av_log(s, AV_LOG_ERROR, "block align not set\n");
144 ffio_wfourcc(pb, "FVER");
146 avio_wb32(pb, 0xA2805140);
149 if (par->channels > 2 && par->channel_layout) {
150 ffio_wfourcc(pb, "CHAN");
152 ff_mov_write_chan(pb, par->channel_layout);
155 put_meta(s, "title", MKTAG('N', 'A', 'M', 'E'));
156 put_meta(s, "author", MKTAG('A', 'U', 'T', 'H'));
157 put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
158 put_meta(s, "comment", MKTAG('A', 'N', 'N', 'O'));
161 ffio_wfourcc(pb, "COMM");
162 avio_wb32(pb, aifc ? 24 : 18); /* size */
163 avio_wb16(pb, par->channels); /* Number of channels */
165 aiff->frames = avio_tell(pb);
166 avio_wb32(pb, 0); /* Number of frames */
168 if (!par->bits_per_coded_sample)
169 par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
170 if (!par->bits_per_coded_sample) {
171 av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
174 if (!par->block_align)
175 par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
177 avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
179 sample_rate = av_double2int(par->sample_rate);
180 avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
181 avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
184 avio_wl32(pb, par->codec_tag);
188 if ( (par->codec_tag == MKTAG('Q','D','M','2')
189 || par->codec_tag == MKTAG('Q','c','l','p')) && par->extradata_size) {
190 ffio_wfourcc(pb, "wave");
191 avio_wb32(pb, par->extradata_size);
192 avio_write(pb, par->extradata, par->extradata_size);
195 /* Sound data chunk */
196 ffio_wfourcc(pb, "SSND");
197 aiff->ssnd = avio_tell(pb); /* Sound chunk size */
198 avio_wb32(pb, 0); /* Sound samples data size */
199 avio_wb32(pb, 0); /* Data offset */
200 avio_wb32(pb, 0); /* Block-size (block align) */
202 avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
203 s->streams[aiff->audio_stream_idx]->codecpar->sample_rate);
205 /* Data is starting here */
211 static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
213 AIFFOutputContext *aiff = s->priv_data;
214 AVIOContext *pb = s->pb;
215 if (pkt->stream_index == aiff->audio_stream_idx)
216 avio_write(pb, pkt->data, pkt->size);
219 AVPacketList *pict_list, *last;
221 if (s->streams[pkt->stream_index]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
224 /* warn only once for each stream */
225 if (s->streams[pkt->stream_index]->nb_frames == 1) {
226 av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
227 " ignoring.\n", pkt->stream_index);
229 if (s->streams[pkt->stream_index]->nb_frames >= 1)
232 pict_list = av_mallocz(sizeof(AVPacketList));
234 return AVERROR(ENOMEM);
236 if ((ret = av_copy_packet(&pict_list->pkt, pkt)) < 0) {
237 av_freep(&pict_list);
241 if (!aiff->pict_list)
242 aiff->pict_list = pict_list;
244 last = aiff->pict_list;
247 last->next = pict_list;
254 static int aiff_write_trailer(AVFormatContext *s)
257 AVIOContext *pb = s->pb;
258 AIFFOutputContext *aiff = s->priv_data;
259 AVPacketList *pict_list = aiff->pict_list;
260 AVCodecParameters *par = s->streams[aiff->audio_stream_idx]->codecpar;
262 /* Chunks sizes must be even */
263 int64_t file_size, end_size;
264 end_size = file_size = avio_tell(pb);
270 if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
271 /* Number of sample frames */
272 avio_seek(pb, aiff->frames, SEEK_SET);
273 avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
275 /* Sound Data chunk size */
276 avio_seek(pb, aiff->ssnd, SEEK_SET);
277 avio_wb32(pb, file_size - aiff->ssnd - 4);
279 /* return to the end */
280 avio_seek(pb, end_size, SEEK_SET);
283 if (aiff->write_id3v2)
284 if ((ret = put_id3v2_tags(s, aiff)) < 0)
288 file_size = avio_tell(pb);
289 avio_seek(pb, aiff->form, SEEK_SET);
290 avio_wb32(pb, file_size - aiff->form - 4);
296 AVPacketList *next = pict_list->next;
297 av_packet_unref(&pict_list->pkt);
298 av_freep(&pict_list);
305 #define OFFSET(x) offsetof(AIFFOutputContext, x)
306 #define ENC AV_OPT_FLAG_ENCODING_PARAM
307 static const AVOption options[] = {
308 { "write_id3v2", "Enable ID3 tags writing.",
309 OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
310 { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
311 OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
315 static const AVClass aiff_muxer_class = {
316 .class_name = "AIFF muxer",
317 .item_name = av_default_item_name,
319 .version = LIBAVUTIL_VERSION_INT,
322 AVOutputFormat ff_aiff_muxer = {
324 .long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
325 .mime_type = "audio/aiff",
326 .extensions = "aif,aiff,afc,aifc",
327 .priv_data_size = sizeof(AIFFOutputContext),
328 .audio_codec = AV_CODEC_ID_PCM_S16BE,
329 .video_codec = AV_CODEC_ID_PNG,
330 .write_header = aiff_write_header,
331 .write_packet = aiff_write_packet,
332 .write_trailer = aiff_write_trailer,
333 .codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
334 .priv_class = &aiff_muxer_class,