FFmpeg  4.3
aiffenc.c
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1 /*
2  * AIFF/AIFF-C muxer
3  * Copyright (c) 2006 Patrick Guimond
4  *
5  * This file is part of FFmpeg.
6  *
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.
11  *
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.
16  *
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
20  */
21 
22 #include <stdint.h>
23 
24 #include "libavutil/intfloat.h"
25 #include "libavutil/opt.h"
26 #include "avformat.h"
27 #include "internal.h"
28 #include "aiff.h"
29 #include "avio_internal.h"
30 #include "isom.h"
31 #include "id3v2.h"
32 
33 typedef struct AIFFOutputContext {
34  const AVClass *class;
35  int64_t form;
36  int64_t frames;
37  int64_t ssnd;
43 
45 {
46  int ret;
47  uint64_t pos, end, size;
48  ID3v2EncContext id3v2 = { 0 };
49  AVIOContext *pb = s->pb;
51 
52  if (!s->metadata && !s->nb_chapters && !aiff->pict_list)
53  return 0;
54 
55  avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
56  avio_wb32(pb, 0);
57  pos = avio_tell(pb);
58 
60  ff_id3v2_write_metadata(s, &id3v2);
61  while (pict_list) {
62  if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
63  return ret;
64  pict_list = pict_list->next;
65  }
67 
68  end = avio_tell(pb);
69  size = end - pos;
70 
71  /* Update chunk size */
72  avio_seek(pb, pos - 4, SEEK_SET);
73  avio_wb32(pb, size);
74  avio_seek(pb, end, SEEK_SET);
75 
76  if (size & 1)
77  avio_w8(pb, 0);
78 
79  return 0;
80 }
81 
82 static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
83 {
85  AVIOContext *pb = s->pb;
86 
87  if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
88  int size = strlen(tag->value);
89 
90  avio_wl32(pb, id);
91  avio_wb32(pb, FFALIGN(size, 2));
92  avio_write(pb, tag->value, size);
93  if (size & 1)
94  avio_w8(pb, 0);
95  }
96 }
97 
99 {
100  AIFFOutputContext *aiff = s->priv_data;
101  AVIOContext *pb = s->pb;
102  AVCodecParameters *par;
103  uint64_t sample_rate;
104  int i, aifc = 0;
105 
106  aiff->audio_stream_idx = -1;
107  for (i = 0; i < s->nb_streams; i++) {
108  AVStream *st = s->streams[i];
109  if (aiff->audio_stream_idx < 0 && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
110  aiff->audio_stream_idx = i;
111  } else if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
112  av_log(s, AV_LOG_ERROR, "AIFF allows only one audio stream and a picture.\n");
113  return AVERROR(EINVAL);
114  }
115  }
116  if (aiff->audio_stream_idx < 0) {
117  av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
118  return AVERROR(EINVAL);
119  }
120 
121  par = s->streams[aiff->audio_stream_idx]->codecpar;
122 
123  /* First verify if format is ok */
124  if (!par->codec_tag)
125  return AVERROR(EINVAL);
126  if (par->codec_tag != MKTAG('N','O','N','E'))
127  aifc = 1;
128 
129  /* FORM AIFF header */
130  ffio_wfourcc(pb, "FORM");
131  aiff->form = avio_tell(pb);
132  avio_wb32(pb, 0); /* file length */
133  ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
134 
135  if (aifc) { // compressed audio
136  if (!par->block_align) {
137  av_log(s, AV_LOG_ERROR, "block align not set\n");
138  return AVERROR(EINVAL);
139  }
140  /* Version chunk */
141  ffio_wfourcc(pb, "FVER");
142  avio_wb32(pb, 4);
143  avio_wb32(pb, 0xA2805140);
144  }
145 
146  if (par->channels > 2 && par->channel_layout) {
147  ffio_wfourcc(pb, "CHAN");
148  avio_wb32(pb, 12);
150  }
151 
152  put_meta(s, "title", MKTAG('N', 'A', 'M', 'E'));
153  put_meta(s, "author", MKTAG('A', 'U', 'T', 'H'));
154  put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
155  put_meta(s, "comment", MKTAG('A', 'N', 'N', 'O'));
156 
157  /* Common chunk */
158  ffio_wfourcc(pb, "COMM");
159  avio_wb32(pb, aifc ? 24 : 18); /* size */
160  avio_wb16(pb, par->channels); /* Number of channels */
161 
162  aiff->frames = avio_tell(pb);
163  avio_wb32(pb, 0); /* Number of frames */
164 
165  if (!par->bits_per_coded_sample)
167  if (!par->bits_per_coded_sample) {
168  av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
169  return AVERROR(EINVAL);
170  }
171  if (!par->block_align)
172  par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
173 
174  avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
175 
176  sample_rate = av_double2int(par->sample_rate);
177  avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
178  avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
179 
180  if (aifc) {
181  avio_wl32(pb, par->codec_tag);
182  avio_wb16(pb, 0);
183  }
184 
185  if ( (par->codec_tag == MKTAG('Q','D','M','2')
186  || par->codec_tag == MKTAG('Q','c','l','p')) && par->extradata_size) {
187  ffio_wfourcc(pb, "wave");
188  avio_wb32(pb, par->extradata_size);
189  avio_write(pb, par->extradata, par->extradata_size);
190  }
191 
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) */
198 
201 
202  return 0;
203 }
204 
206 {
207  AIFFOutputContext *aiff = s->priv_data;
208  AVIOContext *pb = s->pb;
209  if (pkt->stream_index == aiff->audio_stream_idx)
210  avio_write(pb, pkt->data, pkt->size);
211  else {
213  return 0;
214 
215  /* warn only once for each stream */
216  if (s->streams[pkt->stream_index]->nb_frames == 1) {
217  av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
218  " ignoring.\n", pkt->stream_index);
219  }
220  if (s->streams[pkt->stream_index]->nb_frames >= 1)
221  return 0;
222 
223  return ff_packet_list_put(&aiff->pict_list, &aiff->pict_list_end,
225  }
226 
227  return 0;
228 }
229 
231 {
232  int ret = 0;
233  AVIOContext *pb = s->pb;
234  AIFFOutputContext *aiff = s->priv_data;
236 
237  /* Chunks sizes must be even */
238  int64_t file_size, end_size;
239  end_size = file_size = avio_tell(pb);
240  if (file_size & 1) {
241  avio_w8(pb, 0);
242  end_size++;
243  }
244 
245  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
246  /* Number of sample frames */
247  avio_seek(pb, aiff->frames, SEEK_SET);
248  avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
249 
250  /* Sound Data chunk size */
251  avio_seek(pb, aiff->ssnd, SEEK_SET);
252  avio_wb32(pb, file_size - aiff->ssnd - 4);
253 
254  /* return to the end */
255  avio_seek(pb, end_size, SEEK_SET);
256 
257  /* Write ID3 tags */
258  if (aiff->write_id3v2)
259  if ((ret = put_id3v2_tags(s, aiff)) < 0)
260  return ret;
261 
262  /* File length */
263  file_size = avio_tell(pb);
264  avio_seek(pb, aiff->form, SEEK_SET);
265  avio_wb32(pb, file_size - aiff->form - 4);
266  }
267 
268  return ret;
269 }
270 
272 {
273  AIFFOutputContext *aiff = s->priv_data;
274 
276 }
277 
278 #define OFFSET(x) offsetof(AIFFOutputContext, x)
279 #define ENC AV_OPT_FLAG_ENCODING_PARAM
280 static const AVOption options[] = {
281  { "write_id3v2", "Enable ID3 tags writing.",
282  OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
283  { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
284  OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
285  { NULL },
286 };
287 
288 static const AVClass aiff_muxer_class = {
289  .class_name = "AIFF muxer",
290  .item_name = av_default_item_name,
291  .option = options,
292  .version = LIBAVUTIL_VERSION_INT,
293 };
294 
296  .name = "aiff",
297  .long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
298  .mime_type = "audio/aiff",
299  .extensions = "aif,aiff,afc,aifc",
300  .priv_data_size = sizeof(AIFFOutputContext),
301  .audio_codec = AV_CODEC_ID_PCM_S16BE,
302  .video_codec = AV_CODEC_ID_PNG,
306  .deinit = aiff_deinit,
307  .codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
308  .priv_class = &aiff_muxer_class,
309 };
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1580
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:701
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:441
#define NULL
Definition: coverity.c:32
Bytestream IO Context.
Definition: avio.h:161
int size
AVOption.
Definition: opt.h:246
int ff_packet_list_put(AVPacketList **head, AVPacketList **tail, AVPacket *pkt, int flags)
Append an AVPacket to the list.
Definition: utils.c:441
void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, const char *magic)
Initialize an ID3v2 tag.
Definition: id3v2enc.c:205
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb, int padding_bytes)
Finalize an opened ID3v2 tag.
Definition: id3v2enc.c:420
void avpriv_set_pts_info(AVStream *s, int pts_wrap_bits, unsigned int pts_num, unsigned int pts_den)
Set the time base and wrapping info for a given stream.
Definition: utils.c:4938
static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: aiffenc.c:205
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
AVPacketList * pict_list_end
Definition: aiffenc.c:39
int size
Definition: packet.h:356
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:241
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
const char * key
static AVPacket pkt
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
Format I/O context.
Definition: avformat.h:1351
#define ENC
Definition: aiffenc.c:279
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
Definition: log.h:72
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:367
AVOptions.
AVPacket pkt
Definition: avformat.h:2025
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1419
#define FF_PACKETLIST_FLAG_REF_PACKET
Create a new reference for the packet instead of transferring the ownership of the existing one to th...
Definition: internal.h:733
AVDictionaryEntry * av_dict_get(const AVDictionary *m, const char *key, const AVDictionaryEntry *prev, int flags)
Get a dictionary entry with matching key.
Definition: dict.c:40
uint8_t * data
Definition: packet.h:355
uint32_t tag
Definition: movenc.c:1532
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:213
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
#define FFALIGN(x, a)
Definition: macros.h:48
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
#define av_log(a,...)
int audio_stream_idx
Definition: aiffenc.c:38
int64_t frames
Definition: aiffenc.c:36
#define i(width, name, range_min, range_max)
Definition: cbs_h2645.c:269
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1552
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1591
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:186
unsigned int pos
Definition: spdifenc.c:410
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
static const AVOption options[]
Definition: aiffenc.c:280
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1407
int block_align
Audio only.
Definition: codec_par.h:177
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:260
int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
Convert and write all global metadata from s into an ID3v2 tag.
Definition: id3v2enc.c:330
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
const char * name
Definition: avformat.h:500
static int aiff_write_trailer(AVFormatContext *s)
Definition: aiffenc.c:230
#define s(width, name)
Definition: cbs_vp9.c:257
AVPacketList * pict_list
Definition: aiffenc.c:39
static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
Definition: aiffenc.c:44
int metadata_header_padding
Number of bytes to be written as padding in a metadata header.
Definition: avformat.h:1851
Stream structure.
Definition: avformat.h:876
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
sample_rate
int64_t ssnd
Definition: aiffenc.c:37
AVIOContext * pb
I/O context.
Definition: avformat.h:1393
#define OFFSET(x)
Definition: aiffenc.c:278
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:191
Describe the class of an AVClass context structure.
Definition: log.h:67
void ff_packet_list_free(AVPacketList **head, AVPacketList **tail)
Wipe the list and unref all the packets in it.
Definition: utils.c:1423
static int aiff_write_header(AVFormatContext *s)
Definition: aiffenc.c:98
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:453
int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt)
Write an attached picture from pkt into an ID3v2 tag.
Definition: id3v2enc.c:351
int sample_rate
Audio only.
Definition: codec_par.h:170
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:647
Main libavformat public API header.
static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
Definition: aiffenc.c:82
static void aiff_deinit(AVFormatContext *s)
Definition: aiffenc.c:271
struct AVPacketList * next
Definition: avformat.h:2026
static const AVCodecTag ff_codec_aiff_tags[]
Definition: aiff.h:33
int64_t nb_frames
number of frames in this stream if known or 0
Definition: avformat.h:927
char * value
Definition: dict.h:87
void * priv_data
Format private data.
Definition: avformat.h:1379
static const AVClass aiff_muxer_class
Definition: aiffenc.c:288
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
int channels
Audio only.
Definition: codec_par.h:166
common header for AIFF muxer and demuxer
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:375
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1023
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
int stream_index
Definition: packet.h:357
#define MKTAG(a, b, c, d)
Definition: common.h:406
This structure stores compressed data.
Definition: packet.h:332
int64_t form
Definition: aiffenc.c:35
AVOutputFormat ff_aiff_muxer
Definition: aiffenc.c:295