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
22 #include "libavutil/intfloat.h"
23 #include "libavutil/opt.h"
27 #include "avio_internal.h"
37 AVPacketList *pict_list;
42 static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
45 uint64_t pos, end, size;
46 ID3v2EncContext id3v2 = { 0 };
47 AVIOContext *pb = s->pb;
48 AVPacketList *pict_list = aiff->pict_list;
53 if (!s->metadata && !aiff->pict_list)
56 avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
60 ff_id3v2_start(&id3v2, pb, aiff->id3v2_version, ID3v2_DEFAULT_MAGIC);
61 ff_id3v2_write_metadata(s, &id3v2);
63 if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
65 pict_list = pict_list->next;
67 ff_id3v2_finish(&id3v2, pb);
72 /* Update chunk size */
73 avio_seek(pb, pos - 4, SEEK_SET);
75 avio_seek(pb, end, SEEK_SET);
83 static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
85 AVDictionaryEntry *tag;
86 AVIOContext *pb = s->pb;
88 if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
89 int size = strlen(tag->value);
92 avio_wb32(pb, FFALIGN(size, 2));
93 avio_write(pb, tag->value, size);
99 static int aiff_write_header(AVFormatContext *s)
101 AIFFOutputContext *aiff = s->priv_data;
102 AVIOContext *pb = s->pb;
104 uint64_t sample_rate;
107 aiff->audio_stream_idx = -1;
108 for (i = 0; i < s->nb_streams; i++) {
109 AVStream *st = s->streams[i];
110 if (aiff->audio_stream_idx < 0 && st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
111 aiff->audio_stream_idx = i;
112 } else if (st->codec->codec_type != AVMEDIA_TYPE_VIDEO) {
113 av_log(s, AV_LOG_ERROR, "Only audio streams and pictures are allowed in AIFF.\n");
114 return AVERROR(EINVAL);
117 if (aiff->audio_stream_idx < 0) {
118 av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
119 return AVERROR(EINVAL);
122 enc = s->streams[aiff->audio_stream_idx]->codec;
124 /* First verify if format is ok */
127 if (enc->codec_tag != MKTAG('N','O','N','E'))
130 /* FORM AIFF header */
131 ffio_wfourcc(pb, "FORM");
132 aiff->form = avio_tell(pb);
133 avio_wb32(pb, 0); /* file length */
134 ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
136 if (aifc) { // compressed audio
137 if (!enc->block_align) {
138 av_log(s, AV_LOG_ERROR, "block align not set\n");
142 ffio_wfourcc(pb, "FVER");
144 avio_wb32(pb, 0xA2805140);
147 if (enc->channels > 2 && enc->channel_layout) {
148 ffio_wfourcc(pb, "CHAN");
150 ff_mov_write_chan(pb, enc->channel_layout);
153 put_meta(s, "title", MKTAG('N', 'A', 'M', 'E'));
154 put_meta(s, "author", MKTAG('A', 'U', 'T', 'H'));
155 put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
156 put_meta(s, "comment", MKTAG('A', 'N', 'N', 'O'));
159 ffio_wfourcc(pb, "COMM");
160 avio_wb32(pb, aifc ? 24 : 18); /* size */
161 avio_wb16(pb, enc->channels); /* Number of channels */
163 aiff->frames = avio_tell(pb);
164 avio_wb32(pb, 0); /* Number of frames */
166 if (!enc->bits_per_coded_sample)
167 enc->bits_per_coded_sample = av_get_bits_per_sample(enc->codec_id);
168 if (!enc->bits_per_coded_sample) {
169 av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
172 if (!enc->block_align)
173 enc->block_align = (enc->bits_per_coded_sample * enc->channels) >> 3;
175 avio_wb16(pb, enc->bits_per_coded_sample); /* Sample size */
177 sample_rate = av_double2int(enc->sample_rate);
178 avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
179 avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
182 avio_wl32(pb, enc->codec_tag);
186 if (enc->codec_tag == MKTAG('Q','D','M','2') && enc->extradata_size) {
187 ffio_wfourcc(pb, "wave");
188 avio_wb32(pb, enc->extradata_size);
189 avio_write(pb, enc->extradata, enc->extradata_size);
192 /* Sound data chunk */
193 ffio_wfourcc(pb, "SSND");
194 aiff->ssnd = avio_tell(pb); /* Sound chunk size */
195 avio_wb32(pb, 0); /* Sound samples data size */
196 avio_wb32(pb, 0); /* Data offset */
197 avio_wb32(pb, 0); /* Block-size (block align) */
199 avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
200 s->streams[aiff->audio_stream_idx]->codec->sample_rate);
202 /* Data is starting here */
208 static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
210 AIFFOutputContext *aiff = s->priv_data;
211 AVIOContext *pb = s->pb;
212 if (pkt->stream_index == aiff->audio_stream_idx)
213 avio_write(pb, pkt->data, pkt->size);
216 AVPacketList *pict_list, *last;
218 if (s->streams[pkt->stream_index]->codec->codec_type != AVMEDIA_TYPE_VIDEO)
221 /* warn only once for each stream */
222 if (s->streams[pkt->stream_index]->nb_frames == 1) {
223 av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
224 " ignoring.\n", pkt->stream_index);
226 if (s->streams[pkt->stream_index]->nb_frames >= 1)
229 pict_list = av_mallocz(sizeof(AVPacketList));
231 return AVERROR(ENOMEM);
233 if ((ret = av_copy_packet(&pict_list->pkt, pkt)) < 0) {
234 av_freep(&pict_list);
238 if (!aiff->pict_list)
239 aiff->pict_list = pict_list;
241 last = aiff->pict_list;
244 last->next = pict_list;
251 static int aiff_write_trailer(AVFormatContext *s)
254 AVIOContext *pb = s->pb;
255 AIFFOutputContext *aiff = s->priv_data;
256 AVPacketList *pict_list = aiff->pict_list;
257 AVCodecContext *enc = s->streams[aiff->audio_stream_idx]->codec;
259 /* Chunks sizes must be even */
260 int64_t file_size, end_size;
261 end_size = file_size = avio_tell(pb);
267 if (s->pb->seekable) {
268 /* Number of sample frames */
269 avio_seek(pb, aiff->frames, SEEK_SET);
270 avio_wb32(pb, (file_size-aiff->ssnd-12)/enc->block_align);
272 /* Sound Data chunk size */
273 avio_seek(pb, aiff->ssnd, SEEK_SET);
274 avio_wb32(pb, file_size - aiff->ssnd - 4);
276 /* return to the end */
277 avio_seek(pb, end_size, SEEK_SET);
280 if (aiff->write_id3v2)
281 if ((ret = put_id3v2_tags(s, aiff)) < 0)
285 file_size = avio_tell(pb);
286 avio_seek(pb, aiff->form, SEEK_SET);
287 avio_wb32(pb, file_size - aiff->form - 4);
293 AVPacketList *next = pict_list->next;
294 av_free_packet(&pict_list->pkt);
295 av_freep(&pict_list);
302 #define OFFSET(x) offsetof(AIFFOutputContext, x)
303 #define ENC AV_OPT_FLAG_ENCODING_PARAM
304 static const AVOption options[] = {
305 { "write_id3v2", "Enable ID3 tags writing.",
306 OFFSET(write_id3v2), AV_OPT_TYPE_INT, {.i64 = 0}, 0, 1, ENC },
307 { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
308 OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
312 static const AVClass aiff_muxer_class = {
313 .class_name = "AIFF muxer",
314 .item_name = av_default_item_name,
316 .version = LIBAVUTIL_VERSION_INT,
319 AVOutputFormat ff_aiff_muxer = {
321 .long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
322 .mime_type = "audio/aiff",
323 .extensions = "aif,aiff,afc,aifc",
324 .priv_data_size = sizeof(AIFFOutputContext),
325 .audio_codec = AV_CODEC_ID_PCM_S16BE,
326 .video_codec = AV_CODEC_ID_PNG,
327 .write_header = aiff_write_header,
328 .write_packet = aiff_write_packet,
329 .write_trailer = aiff_write_trailer,
330 .codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
331 .priv_class = &aiff_muxer_class,