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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;
50  AVPacketList *pict_list = aiff->pict_list;
51 
52  if (!pb->seekable)
53  return 0;
54 
55  if (!s->metadata && !aiff->pict_list)
56  return 0;
57 
58  avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
59  avio_wb32(pb, 0);
60  pos = avio_tell(pb);
61 
63  ff_id3v2_write_metadata(s, &id3v2);
64  while (pict_list) {
65  if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
66  return ret;
67  pict_list = pict_list->next;
68  }
70 
71  end = avio_tell(pb);
72  size = end - pos;
73 
74  /* Update chunk size */
75  avio_seek(pb, pos - 4, SEEK_SET);
76  avio_wb32(pb, size);
77  avio_seek(pb, end, SEEK_SET);
78 
79  if (size & 1)
80  avio_w8(pb, 0);
81 
82  return 0;
83 }
84 
85 static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
86 {
88  AVIOContext *pb = s->pb;
89 
90  if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
91  int size = strlen(tag->value);
92 
93  avio_wl32(pb, id);
94  avio_wb32(pb, FFALIGN(size, 2));
95  avio_write(pb, tag->value, size);
96  if (size & 1)
97  avio_w8(pb, 0);
98  }
99 }
100 
102 {
103  AIFFOutputContext *aiff = s->priv_data;
104  AVIOContext *pb = s->pb;
105  AVCodecParameters *par;
106  uint64_t sample_rate;
107  int i, aifc = 0;
108 
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);
117  }
118  }
119  if (aiff->audio_stream_idx < 0) {
120  av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
121  return AVERROR(EINVAL);
122  }
123 
124  par = s->streams[aiff->audio_stream_idx]->codecpar;
125 
126  /* First verify if format is ok */
127  if (!par->codec_tag)
128  return -1;
129  if (par->codec_tag != MKTAG('N','O','N','E'))
130  aifc = 1;
131 
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");
137 
138  if (aifc) { // compressed audio
139  if (!par->block_align) {
140  av_log(s, AV_LOG_ERROR, "block align not set\n");
141  return -1;
142  }
143  /* Version chunk */
144  ffio_wfourcc(pb, "FVER");
145  avio_wb32(pb, 4);
146  avio_wb32(pb, 0xA2805140);
147  }
148 
149  if (par->channels > 2 && par->channel_layout) {
150  ffio_wfourcc(pb, "CHAN");
151  avio_wb32(pb, 12);
153  }
154 
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'));
159 
160  /* Common chunk */
161  ffio_wfourcc(pb, "COMM");
162  avio_wb32(pb, aifc ? 24 : 18); /* size */
163  avio_wb16(pb, par->channels); /* Number of channels */
164 
165  aiff->frames = avio_tell(pb);
166  avio_wb32(pb, 0); /* Number of frames */
167 
168  if (!par->bits_per_coded_sample)
170  if (!par->bits_per_coded_sample) {
171  av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
172  return -1;
173  }
174  if (!par->block_align)
175  par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
176 
177  avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
178 
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);
182 
183  if (aifc) {
184  avio_wl32(pb, par->codec_tag);
185  avio_wb16(pb, 0);
186  }
187 
188  if (par->codec_tag == MKTAG('Q','D','M','2') && par->extradata_size) {
189  ffio_wfourcc(pb, "wave");
190  avio_wb32(pb, par->extradata_size);
191  avio_write(pb, par->extradata, par->extradata_size);
192  }
193 
194  /* Sound data chunk */
195  ffio_wfourcc(pb, "SSND");
196  aiff->ssnd = avio_tell(pb); /* Sound chunk size */
197  avio_wb32(pb, 0); /* Sound samples data size */
198  avio_wb32(pb, 0); /* Data offset */
199  avio_wb32(pb, 0); /* Block-size (block align) */
200 
203 
204  /* Data is starting here */
205  avio_flush(pb);
206 
207  return 0;
208 }
209 
211 {
212  AIFFOutputContext *aiff = s->priv_data;
213  AVIOContext *pb = s->pb;
214  if (pkt->stream_index == aiff->audio_stream_idx)
215  avio_write(pb, pkt->data, pkt->size);
216  else {
217  int ret;
218  AVPacketList *pict_list, *last;
219 
221  return 0;
222 
223  /* warn only once for each stream */
224  if (s->streams[pkt->stream_index]->nb_frames == 1) {
225  av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
226  " ignoring.\n", pkt->stream_index);
227  }
228  if (s->streams[pkt->stream_index]->nb_frames >= 1)
229  return 0;
230 
231  pict_list = av_mallocz(sizeof(AVPacketList));
232  if (!pict_list)
233  return AVERROR(ENOMEM);
234 
235  if ((ret = av_copy_packet(&pict_list->pkt, pkt)) < 0) {
236  av_freep(&pict_list);
237  return ret;
238  }
239 
240  if (!aiff->pict_list)
241  aiff->pict_list = pict_list;
242  else {
243  last = aiff->pict_list;
244  while (last->next)
245  last = last->next;
246  last->next = pict_list;
247  }
248  }
249 
250  return 0;
251 }
252 
254 {
255  int ret;
256  AVIOContext *pb = s->pb;
257  AIFFOutputContext *aiff = s->priv_data;
258  AVPacketList *pict_list = aiff->pict_list;
260 
261  /* Chunks sizes must be even */
262  int64_t file_size, end_size;
263  end_size = file_size = avio_tell(pb);
264  if (file_size & 1) {
265  avio_w8(pb, 0);
266  end_size++;
267  }
268 
269  if (s->pb->seekable) {
270  /* Number of sample frames */
271  avio_seek(pb, aiff->frames, SEEK_SET);
272  avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
273 
274  /* Sound Data chunk size */
275  avio_seek(pb, aiff->ssnd, SEEK_SET);
276  avio_wb32(pb, file_size - aiff->ssnd - 4);
277 
278  /* return to the end */
279  avio_seek(pb, end_size, SEEK_SET);
280 
281  /* Write ID3 tags */
282  if (aiff->write_id3v2)
283  if ((ret = put_id3v2_tags(s, aiff)) < 0)
284  return ret;
285 
286  /* File length */
287  file_size = avio_tell(pb);
288  avio_seek(pb, aiff->form, SEEK_SET);
289  avio_wb32(pb, file_size - aiff->form - 4);
290 
291  avio_flush(pb);
292  }
293 
294  while (pict_list) {
295  AVPacketList *next = pict_list->next;
296  av_packet_unref(&pict_list->pkt);
297  av_freep(&pict_list);
298  pict_list = next;
299  }
300 
301  return 0;
302 }
303 
304 #define OFFSET(x) offsetof(AIFFOutputContext, x)
305 #define ENC AV_OPT_FLAG_ENCODING_PARAM
306 static const AVOption options[] = {
307  { "write_id3v2", "Enable ID3 tags writing.",
308  OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
309  { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
310  OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
311  { NULL },
312 };
313 
314 static const AVClass aiff_muxer_class = {
315  .class_name = "AIFF muxer",
316  .item_name = av_default_item_name,
317  .option = options,
318  .version = LIBAVUTIL_VERSION_INT,
319 };
320 
322  .name = "aiff",
323  .long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
324  .mime_type = "audio/aiff",
325  .extensions = "aif,aiff,afc,aifc",
326  .priv_data_size = sizeof(AIFFOutputContext),
327  .audio_codec = AV_CODEC_ID_PCM_S16BE,
328  .video_codec = AV_CODEC_ID_PNG,
332  .codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
333  .priv_class = &aiff_muxer_class,
334 };
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:440
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
Bytestream IO Context.
Definition: avio.h:147
AVOption.
Definition: opt.h:245
void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, const char *magic)
Initialize an ID3v2 tag.
Definition: id3v2enc.c:152
#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:326
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:4549
static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: aiffenc.c:210
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: avcodec.h:3979
int size
Definition: avcodec.h:1601
#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:230
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
Definition: mem.c:252
static AVPacket pkt
This struct describes the properties of an encoded stream.
Definition: avcodec.h:3971
Format I/O context.
Definition: avformat.h:1330
#define ENC
Definition: aiffenc.c:305
static void write_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
Definition: ffmpeg.c:636
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:346
AVOptions.
AVPacket pkt
Definition: avformat.h:1940
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1398
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: avcodec.h:1600
uint32_t tag
Definition: movenc.c:1382
ptrdiff_t size
Definition: opengl_enc.c:101
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:511
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:204
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:66
#define FFALIGN(x, a)
Definition: macros.h:48
uint64_t channel_layout
Audio only.
Definition: avcodec.h:4081
#define av_log(a,...)
int audio_stream_idx
Definition: aiffenc.c:38
int64_t frames
Definition: aiffenc.c:36
#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:3492
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1546
av_default_item_name
#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:176
enum AVMediaType codec_type
General type of the encoded data.
Definition: avcodec.h:3975
static const AVOption options[]
Definition: aiffenc.c:306
int extradata_size
Size of the extradata content in bytes.
Definition: avcodec.h:3997
unsigned int nb_streams
Number of elements in AVFormatContext.streams.
Definition: avformat.h:1386
int block_align
Audio only.
Definition: avcodec.h:4096
int seekable
A combination of AVIO_SEEKABLE_ flags or 0 when the stream is not seekable.
Definition: avio.h:243
int void avio_flush(AVIOContext *s)
Force flushing of buffered data.
Definition: aviobuf.c:224
int ff_id3v2_write_metadata(AVFormatContext *s, ID3v2EncContext *id3)
Convert and write all global metadata from s into an ID3v2 tag.
Definition: id3v2enc.c:239
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:94
const char * name
Definition: avformat.h:524
static int aiff_write_trailer(AVFormatContext *s)
Definition: aiffenc.c:253
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:1806
Stream structure.
Definition: avformat.h:881
sample_rate
int64_t ssnd
Definition: aiffenc.c:37
AVIOContext * pb
I/O context.
Definition: avformat.h:1372
#define OFFSET(x)
Definition: aiffenc.c:304
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:182
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
Definition: avpacket.c:567
int av_copy_packet(AVPacket *dst, const AVPacket *src)
Copy packet, including contents.
Definition: avpacket.c:264
Describe the class of an AVClass context structure.
Definition: log.h:67
static int aiff_write_header(AVFormatContext *s)
Definition: aiffenc.c:101
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:452
int ff_id3v2_write_apic(AVFormatContext *s, ID3v2EncContext *id3, AVPacket *pkt)
Write an attached picture from pkt into an ID3v2 tag.
Definition: id3v2enc.c:257
int sample_rate
Audio only.
Definition: avcodec.h:4089
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:602
Main libavformat public API header.
static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
Definition: aiffenc.c:85
struct AVPacketList * next
Definition: avformat.h:1941
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:937
char * value
Definition: dict.h:87
void * priv_data
Format private data.
Definition: avformat.h:1358
static const AVClass aiff_muxer_class
Definition: aiffenc.c:314
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:344
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: avcodec.h:4021
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: avcodec.h:3993
int channels
Audio only.
Definition: avcodec.h:4085
common header for AIFF muxer and demuxer
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:354
#define av_freep(p)
AVCodecParameters * codecpar
Definition: avformat.h:1233
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: avcodec.h:3983
int stream_index
Definition: avcodec.h:1602
#define MKTAG(a, b, c, d)
Definition: common.h:342
This structure stores compressed data.
Definition: avcodec.h:1577
int64_t form
Definition: aiffenc.c:35
AVOutputFormat ff_aiff_muxer
Definition: aiffenc.c:321