FFmpeg  4.4.5
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;
44 
46 {
47  int ret;
48  uint64_t pos, end, size;
49  ID3v2EncContext id3v2 = { 0 };
50  AVIOContext *pb = s->pb;
51  PacketList *pict_list = aiff->pict_list;
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  }
67  ff_id3v2_finish(&id3v2, pb, s->metadata_header_padding);
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 
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 
200  avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
201  s->streams[aiff->audio_stream_idx]->codecpar->sample_rate);
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 {
213  if (s->streams[pkt->stream_index]->codecpar->codec_type != AVMEDIA_TYPE_VIDEO)
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;
236  AVCodecParameters *par = s->streams[aiff->audio_stream_idx]->codecpar;
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 = ff_aiff_codec_tags_list,
309  .priv_class = &aiff_muxer_class,
310 };
const AVCodecTag *const ff_aiff_codec_tags_list[]
Definition: aiff.c:54
common header for AIFF muxer and demuxer
static int aiff_write_header(AVFormatContext *s)
Definition: aiffenc.c:99
static const AVClass aiff_muxer_class
Definition: aiffenc.c:289
static const AVOption options[]
Definition: aiffenc.c:281
static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: aiffenc.c:206
static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
Definition: aiffenc.c:45
static int aiff_write_trailer(AVFormatContext *s)
Definition: aiffenc.c:231
static void aiff_deinit(AVFormatContext *s)
Definition: aiffenc.c:272
static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
Definition: aiffenc.c:83
#define ENC
Definition: aiffenc.c:280
AVOutputFormat ff_aiff_muxer
Definition: aiffenc.c:296
#define OFFSET(x)
Definition: aiffenc.c:279
Main libavformat public API header.
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:375
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:203
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:383
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:461
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:449
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
void avpriv_packet_list_free(PacketList **pkt_buf, PacketList **pkt_buf_end)
Wipe the list and unref all the packets in it.
Definition: avpacket.c:806
int avpriv_packet_list_put(PacketList **packet_buffer, PacketList **plast_pktl, AVPacket *pkt, int(*copy)(AVPacket *dst, const AVPacket *src), int flags)
Append an AVPacket to the list.
Definition: avpacket.c:753
#define s(width, name)
Definition: cbs_vp9.c:257
#define MKTAG(a, b, c, d)
Definition: common.h:478
#define NULL
Definition: coverity.c:32
long long int64_t
Definition: coverity.c:34
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:730
sample_rate
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
@ AV_OPT_TYPE_INT
Definition: opt.h:225
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
@ AV_CODEC_ID_PNG
Definition: codec_id.h:110
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:314
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:636
int av_packet_ref(AVPacket *dst, const AVPacket *src)
Setup a new reference to the data described by a given packet.
Definition: avpacket.c:641
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
#define AVERROR(e)
Definition: error.h:43
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
const char * key
void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, const char *magic)
Initialize an ID3v2 tag.
Definition: id3v2enc.c:205
void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb, int padding_bytes)
Finalize an opened ID3v2 tag.
Definition: id3v2enc.c:420
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
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
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
int i
Definition: input.c:407
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:422
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:4945
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
#define FFALIGN(x, a)
Definition: macros.h:48
uint32_t tag
Definition: movenc.c:1611
AVOptions.
unsigned int pos
Definition: spdifenc.c:412
PacketList * pict_list_end
Definition: aiffenc.c:40
int64_t form
Definition: aiffenc.c:36
int64_t frames
Definition: aiffenc.c:37
int64_t ssnd
Definition: aiffenc.c:38
PacketList * pict_list
Definition: aiffenc.c:40
int audio_stream_idx
Definition: aiffenc.c:39
Describe the class of an AVClass context structure.
Definition: log.h:67
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
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
int channels
Audio only.
Definition: codec_par.h:166
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
int block_align
Audio only.
Definition: codec_par.h:177
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
int sample_rate
Audio only.
Definition: codec_par.h:170
Format I/O context.
Definition: avformat.h:1232
Bytestream IO Context.
Definition: avio.h:161
AVOption.
Definition: opt.h:248
const char * name
Definition: avformat.h:491
This structure stores compressed data.
Definition: packet.h:346
int stream_index
Definition: packet.h:371
int size
Definition: packet.h:370
uint8_t * data
Definition: packet.h:369
Stream structure.
Definition: avformat.h:873
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
struct PacketList * next
AVPacket pkt
#define av_log(a,...)
AVPacket * pkt
Definition: movenc.c:59
int size
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98