FFmpeg
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"
27 #include "avformat.h"
28 #include "internal.h"
29 #include "aiff.h"
30 #include "avio_internal.h"
31 #include "isom.h"
32 #include "id3v2.h"
33 
34 typedef struct AIFFOutputContext {
35  const AVClass *class;
36  int64_t form;
37  int64_t frames;
38  int64_t ssnd;
44 
46 {
47  int ret;
48  uint64_t pos, end, size;
49  ID3v2EncContext id3v2 = { 0 };
50  AVIOContext *pb = s->pb;
52 
53  if (!s->metadata && !s->nb_chapters && !aiff->pict_list)
54  return 0;
55 
56  avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
57  avio_wb32(pb, 0);
58  pos = avio_tell(pb);
59 
61  ff_id3v2_write_metadata(s, &id3v2);
62  while (pict_list) {
63  if ((ret = ff_id3v2_write_apic(s, &id3v2, &pict_list->pkt)) < 0)
64  return ret;
65  pict_list = pict_list->next;
66  }
68 
69  end = avio_tell(pb);
70  size = end - pos;
71 
72  /* Update chunk size */
73  avio_seek(pb, pos - 4, SEEK_SET);
74  avio_wb32(pb, size);
75  avio_seek(pb, end, SEEK_SET);
76 
77  if (size & 1)
78  avio_w8(pb, 0);
79 
80  return 0;
81 }
82 
83 static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
84 {
86  AVIOContext *pb = s->pb;
87 
88  if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
89  int size = strlen(tag->value);
90 
91  avio_wl32(pb, id);
92  avio_wb32(pb, FFALIGN(size, 2));
93  avio_write(pb, tag->value, size);
94  if (size & 1)
95  avio_w8(pb, 0);
96  }
97 }
98 
100 {
101  AIFFOutputContext *aiff = s->priv_data;
102  AVIOContext *pb = s->pb;
103  AVCodecParameters *par;
104  uint64_t sample_rate;
105  int i, aifc = 0;
106 
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->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
111  aiff->audio_stream_idx = i;
112  } else if (st->codecpar->codec_type != AVMEDIA_TYPE_VIDEO) {
113  av_log(s, AV_LOG_ERROR, "AIFF allows only one audio stream and a picture.\n");
114  return AVERROR(EINVAL);
115  }
116  }
117  if (aiff->audio_stream_idx < 0) {
118  av_log(s, AV_LOG_ERROR, "No audio stream present.\n");
119  return AVERROR(EINVAL);
120  }
121 
122  par = s->streams[aiff->audio_stream_idx]->codecpar;
123 
124  /* First verify if format is ok */
125  if (!par->codec_tag)
126  return AVERROR(EINVAL);
127  if (par->codec_tag != MKTAG('N','O','N','E'))
128  aifc = 1;
129 
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");
135 
136  if (aifc) { // compressed audio
137  if (!par->block_align) {
138  av_log(s, AV_LOG_ERROR, "block align not set\n");
139  return AVERROR(EINVAL);
140  }
141  /* Version chunk */
142  ffio_wfourcc(pb, "FVER");
143  avio_wb32(pb, 4);
144  avio_wb32(pb, 0xA2805140);
145  }
146 
147  if (par->channels > 2 && par->channel_layout) {
148  ffio_wfourcc(pb, "CHAN");
149  avio_wb32(pb, 12);
151  }
152 
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'));
157 
158  /* Common chunk */
159  ffio_wfourcc(pb, "COMM");
160  avio_wb32(pb, aifc ? 24 : 18); /* size */
161  avio_wb16(pb, par->channels); /* Number of channels */
162 
163  aiff->frames = avio_tell(pb);
164  avio_wb32(pb, 0); /* Number of frames */
165 
166  if (!par->bits_per_coded_sample)
168  if (!par->bits_per_coded_sample) {
169  av_log(s, AV_LOG_ERROR, "could not compute bits per sample\n");
170  return AVERROR(EINVAL);
171  }
172  if (!par->block_align)
173  par->block_align = (par->bits_per_coded_sample * par->channels) >> 3;
174 
175  avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
176 
177  sample_rate = av_double2int(par->sample_rate);
178  avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
179  avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
180 
181  if (aifc) {
182  avio_wl32(pb, par->codec_tag);
183  avio_wb16(pb, 0);
184  }
185 
186  if ( (par->codec_tag == MKTAG('Q','D','M','2')
187  || par->codec_tag == MKTAG('Q','c','l','p')) && par->extradata_size) {
188  ffio_wfourcc(pb, "wave");
189  avio_wb32(pb, par->extradata_size);
190  avio_write(pb, par->extradata, par->extradata_size);
191  }
192 
193  /* Sound data chunk */
194  ffio_wfourcc(pb, "SSND");
195  aiff->ssnd = avio_tell(pb); /* Sound chunk size */
196  avio_wb32(pb, 0); /* Sound samples data size */
197  avio_wb32(pb, 0); /* Data offset */
198  avio_wb32(pb, 0); /* Block-size (block align) */
199 
202 
203  return 0;
204 }
205 
207 {
208  AIFFOutputContext *aiff = s->priv_data;
209  AVIOContext *pb = s->pb;
210  if (pkt->stream_index == aiff->audio_stream_idx)
211  avio_write(pb, pkt->data, pkt->size);
212  else {
214  return 0;
215 
216  /* warn only once for each stream */
217  if (s->streams[pkt->stream_index]->nb_frames == 1) {
218  av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
219  " ignoring.\n", pkt->stream_index);
220  }
221  if (s->streams[pkt->stream_index]->nb_frames >= 1)
222  return 0;
223 
224  return avpriv_packet_list_put(&aiff->pict_list, &aiff->pict_list_end,
225  pkt, av_packet_ref, 0);
226  }
227 
228  return 0;
229 }
230 
232 {
233  int ret = 0;
234  AVIOContext *pb = s->pb;
235  AIFFOutputContext *aiff = s->priv_data;
237 
238  /* Chunks sizes must be even */
239  int64_t file_size, end_size;
240  end_size = file_size = avio_tell(pb);
241  if (file_size & 1) {
242  avio_w8(pb, 0);
243  end_size++;
244  }
245 
246  if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
247  /* Number of sample frames */
248  avio_seek(pb, aiff->frames, SEEK_SET);
249  avio_wb32(pb, (file_size - aiff->ssnd - 12) / par->block_align);
250 
251  /* Sound Data chunk size */
252  avio_seek(pb, aiff->ssnd, SEEK_SET);
253  avio_wb32(pb, file_size - aiff->ssnd - 4);
254 
255  /* return to the end */
256  avio_seek(pb, end_size, SEEK_SET);
257 
258  /* Write ID3 tags */
259  if (aiff->write_id3v2)
260  if ((ret = put_id3v2_tags(s, aiff)) < 0)
261  return ret;
262 
263  /* File length */
264  file_size = avio_tell(pb);
265  avio_seek(pb, aiff->form, SEEK_SET);
266  avio_wb32(pb, file_size - aiff->form - 4);
267  }
268 
269  return ret;
270 }
271 
273 {
274  AIFFOutputContext *aiff = s->priv_data;
275 
277 }
278 
279 #define OFFSET(x) offsetof(AIFFOutputContext, x)
280 #define ENC AV_OPT_FLAG_ENCODING_PARAM
281 static const AVOption options[] = {
282  { "write_id3v2", "Enable ID3 tags writing.",
283  OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
284  { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
285  OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
286  { NULL },
287 };
288 
289 static const AVClass aiff_muxer_class = {
290  .class_name = "AIFF muxer",
291  .item_name = av_default_item_name,
292  .option = options,
293  .version = LIBAVUTIL_VERSION_INT,
294 };
295 
297  .name = "aiff",
298  .long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
299  .mime_type = "audio/aiff",
300  .extensions = "aif,aiff,afc,aifc",
301  .priv_data_size = sizeof(AIFFOutputContext),
302  .audio_codec = AV_CODEC_ID_PCM_S16BE,
303  .video_codec = AV_CODEC_ID_PNG,
307  .deinit = aiff_deinit,
308  .codec_tag = (const AVCodecTag* const []){ ff_codec_aiff_tags, 0 },
309  .priv_class = &aiff_muxer_class,
310 };
unsigned int nb_chapters
Number of chapters in AVChapter array.
Definition: avformat.h:1468
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:703
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:453
#define NULL
Definition: coverity.c:32
Bytestream IO Context.
Definition: avio.h:161
AVOption.
Definition: opt.h:248
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:200
#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:4871
static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: aiffenc.c:206
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:40
int size
Definition: packet.h:364
#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:253
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:1239
#define ENC
Definition: aiffenc.c:280
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:379
AVOptions.
AVPacket pkt
Definition: packet.h:397
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:92
AVStream ** streams
A list of all streams in the file.
Definition: avformat.h:1307
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:363
uint32_t tag
Definition: movenc.c:1597
ptrdiff_t size
Definition: opengl_enc.c:100
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:225
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:39
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:615
int64_t frames
Definition: aiffenc.c:37
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:1572
AVDictionary * metadata
Metadata that applies to the whole file.
Definition: avformat.h:1479
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:153
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:281
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:1295
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:231
#define s(width, name)
Definition: cbs_vp9.c:257
AVPacketList * pict_list
Definition: aiffenc.c:40
static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
Definition: aiffenc.c:45
int avpriv_packet_list_put(AVPacketList **packet_buffer, AVPacketList **plast_pktl, AVPacket *pkt, int(*copy)(AVPacket *dst, const AVPacket *src), int flags)
Append an AVPacket to the list.
Definition: avpacket.c:729
int metadata_header_padding
Number of bytes to be written as padding in a metadata header.
Definition: avformat.h:1751
Stream structure.
Definition: avformat.h:880
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
sample_rate
int64_t ssnd
Definition: aiffenc.c:38
AVIOContext * pb
I/O context.
Definition: avformat.h:1281
#define OFFSET(x)
Definition: aiffenc.c:279
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:203
Describe the class of an AVClass context structure.
Definition: log.h:67
static int aiff_write_header(AVFormatContext *s)
Definition: aiffenc.c:99
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:465
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:770
Main libavformat public API header.
static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
Definition: aiffenc.c:83
static void aiff_deinit(AVFormatContext *s)
Definition: aiffenc.c:272
struct AVPacketList * next
Definition: packet.h:398
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:931
char * value
Definition: dict.h:87
void * priv_data
Format private data.
Definition: avformat.h:1267
static const AVClass aiff_muxer_class
Definition: aiffenc.c:289
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:387
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1045
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:365
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
#define MKTAG(a, b, c, d)
Definition: common.h:405
This structure stores compressed data.
Definition: packet.h:340
int64_t form
Definition: aiffenc.c:36
int i
Definition: input.c:407
AVOutputFormat ff_aiff_muxer
Definition: aiffenc.c:296
void avpriv_packet_list_free(AVPacketList **pkt_buf, AVPacketList **pkt_buf_end)
Wipe the list and unref all the packets in it.
Definition: avpacket.c:782