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;
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 };
AV_LOG_WARNING
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:200
AVCodecParameters::extradata
uint8_t * extradata
Extra binary data needed for initializing the decoder, codec-dependent.
Definition: codec_par.h:74
ID3v2EncContext
Definition: id3v2.h:51
AIFFOutputContext::frames
int64_t frames
Definition: aiffenc.c:37
AVOutputFormat::name
const char * name
Definition: avformat.h:491
AVERROR
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
opt.h
AVCodecParameters::codec_type
enum AVMediaType codec_type
General type of the encoded data.
Definition: codec_par.h:56
ffio_wfourcc
static av_always_inline void ffio_wfourcc(AVIOContext *pb, const uint8_t *s)
Definition: avio_internal.h:58
AVCodecParameters
This struct describes the properties of an encoded stream.
Definition: codec_par.h:52
MKTAG
#define MKTAG(a, b, c, d)
Definition: common.h:478
id3v2.h
AIFFOutputContext::id3v2_version
int id3v2_version
Definition: aiffenc.c:42
AVPacket::data
uint8_t * data
Definition: packet.h:369
AVOption
AVOption.
Definition: opt.h:248
PacketList
Definition: packet_internal.h:26
aiff_write_packet
static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
Definition: aiffenc.c:206
AVCodecParameters::codec_tag
uint32_t codec_tag
Additional information about the codec (corresponds to the AVI FOURCC).
Definition: codec_par.h:64
AIFFOutputContext::ssnd
int64_t ssnd
Definition: aiffenc.c:38
intfloat.h
ff_id3v2_start
void ff_id3v2_start(ID3v2EncContext *id3, AVIOContext *pb, int id3v2_version, const char *magic)
Initialize an ID3v2 tag.
Definition: id3v2enc.c:205
sample_rate
sample_rate
Definition: ffmpeg_filter.c:158
AIFFOutputContext::write_id3v2
int write_id3v2
Definition: aiffenc.c:41
AVCodecParameters::channels
int channels
Audio only.
Definition: codec_par.h:166
AV_CODEC_ID_PCM_S16BE
@ AV_CODEC_ID_PCM_S16BE
Definition: codec_id.h:314
ENC
#define ENC
Definition: aiffenc.c:280
avio_tell
static av_always_inline int64_t avio_tell(AVIOContext *s)
ftell() equivalent for AVIOContext.
Definition: avio.h:557
AIFFOutputContext::pict_list
PacketList * pict_list
Definition: aiffenc.c:40
pkt
AVPacket * pkt
Definition: movenc.c:59
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:194
av_dict_get
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
s
#define s(width, name)
Definition: cbs_vp9.c:257
AVMEDIA_TYPE_AUDIO
@ AVMEDIA_TYPE_AUDIO
Definition: avutil.h:202
options
static const AVOption options[]
Definition: aiffenc.c:281
ff_id3v2_write_metadata
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
key
const char * key
Definition: hwcontext_opencl.c:168
AV_CODEC_ID_PNG
@ AV_CODEC_ID_PNG
Definition: codec_id.h:110
AVFormatContext
Format I/O context.
Definition: avformat.h:1231
internal.h
AVStream::codecpar
AVCodecParameters * codecpar
Codec parameters associated with this stream.
Definition: avformat.h:1038
LIBAVUTIL_VERSION_INT
#define LIBAVUTIL_VERSION_INT
Definition: version.h:85
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
NULL
#define NULL
Definition: coverity.c:32
isom.h
write_trailer
static int write_trailer(AVFormatContext *s1)
Definition: v4l2enc.c:98
aiff.h
av_default_item_name
const char * av_default_item_name(void *ptr)
Return the context name.
Definition: log.c:235
AIFFOutputContext::form
int64_t form
Definition: aiffenc.c:36
PacketList::next
struct PacketList * next
Definition: packet_internal.h:28
avio_w8
void avio_w8(AVIOContext *s, int b)
Definition: aviobuf.c:203
av_packet_ref
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
AVCodecParameters::sample_rate
int sample_rate
Audio only.
Definition: codec_par.h:170
AVCodecParameters::extradata_size
int extradata_size
Size of the extradata content in bytes.
Definition: codec_par.h:78
ff_id3v2_write_apic
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
av_get_bits_per_sample
int av_get_bits_per_sample(enum AVCodecID codec_id)
Return codec bits per sample.
Definition: utils.c:613
AVIOContext
Bytestream IO Context.
Definition: avio.h:161
AVPacket::size
int size
Definition: packet.h:370
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
Definition: internal.h:117
avpriv_set_pts_info
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:4999
aiff_write_trailer
static int aiff_write_trailer(AVFormatContext *s)
Definition: aiffenc.c:231
size
int size
Definition: twinvq_data.h:10344
ID3v2_DEFAULT_MAGIC
#define ID3v2_DEFAULT_MAGIC
Default magic bytes for ID3v2 header: "ID3".
Definition: id3v2.h:35
avio_write
void avio_write(AVIOContext *s, const unsigned char *buf, int size)
Definition: aviobuf.c:225
avio_wb32
void avio_wb32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:383
avio_wl32
void avio_wl32(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:375
put_id3v2_tags
static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
Definition: aiffenc.c:45
PacketList::pkt
AVPacket pkt
Definition: packet_internal.h:27
write_packet
static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost, int unqueue)
Definition: ffmpeg.c:729
av_double2int
static av_always_inline uint64_t av_double2int(double f)
Reinterpret a double as a 64-bit integer.
Definition: intfloat.h:70
AIFFOutputContext::pict_list_end
PacketList * pict_list_end
Definition: aiffenc.c:40
i
int i
Definition: input.c:407
AVOutputFormat
Definition: avformat.h:490
avio_internal.h
AVCodecParameters::block_align
int block_align
Audio only.
Definition: codec_par.h:177
OFFSET
#define OFFSET(x)
Definition: aiffenc.c:279
AIFFOutputContext
Definition: aiffenc.c:34
tag
uint32_t tag
Definition: movenc.c:1611
ret
ret
Definition: filter_design.txt:187
AVStream
Stream structure.
Definition: avformat.h:873
avio_seek
int64_t avio_seek(AVIOContext *s, int64_t offset, int whence)
fseek() equivalent for AVIOContext.
Definition: aviobuf.c:253
AVClass::class_name
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
aiff_write_header
static int aiff_write_header(AVFormatContext *s)
Definition: aiffenc.c:99
pos
unsigned int pos
Definition: spdifenc.c:412
avformat.h
AVIO_SEEKABLE_NORMAL
#define AVIO_SEEKABLE_NORMAL
Seeking works like for a local file.
Definition: avio.h:40
AV_OPT_TYPE_INT
@ AV_OPT_TYPE_INT
Definition: opt.h:225
AVPacket::stream_index
int stream_index
Definition: packet.h:371
aiff_muxer_class
static const AVClass aiff_muxer_class
Definition: aiffenc.c:289
ff_id3v2_finish
void ff_id3v2_finish(ID3v2EncContext *id3, AVIOContext *pb, int padding_bytes)
Finalize an opened ID3v2 tag.
Definition: id3v2enc.c:420
aiff_deinit
static void aiff_deinit(AVFormatContext *s)
Definition: aiffenc.c:272
put_meta
static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
Definition: aiffenc.c:83
avio_wb64
void avio_wb64(AVIOContext *s, uint64_t val)
Definition: aviobuf.c:449
AVMEDIA_TYPE_VIDEO
@ AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
AVCodecParameters::bits_per_coded_sample
int bits_per_coded_sample
The number of bits per sample in the codedwords.
Definition: codec_par.h:102
packet_internal.h
AVDictionaryEntry
Definition: dict.h:81
FFALIGN
#define FFALIGN(x, a)
Definition: macros.h:48
AVCodecParameters::codec_id
enum AVCodecID codec_id
Specific type of the encoded data (the codec used).
Definition: codec_par.h:60
ff_aiff_codec_tags_list
const AVCodecTag *const ff_aiff_codec_tags_list[]
Definition: aiff.c:54
AVPacket
This structure stores compressed data.
Definition: packet.h:346
AV_OPT_TYPE_BOOL
@ AV_OPT_TYPE_BOOL
Definition: opt.h:242
AVCodecParameters::channel_layout
uint64_t channel_layout
Audio only.
Definition: codec_par.h:162
avio_wb16
void avio_wb16(AVIOContext *s, unsigned int val)
Definition: aviobuf.c:461
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
ff_aiff_muxer
AVOutputFormat ff_aiff_muxer
Definition: aiffenc.c:296
write_header
static void write_header(FFV1Context *f)
Definition: ffv1enc.c:346
ff_mov_write_chan
void ff_mov_write_chan(AVIOContext *pb, int64_t channel_layout)
Definition: isom.c:422
AIFFOutputContext::audio_stream_idx
int audio_stream_idx
Definition: aiffenc.c:39
avpriv_packet_list_put
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
avpriv_packet_list_free
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