FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavformat/aiffenc.c
Date: 2022-12-09 07:38:14
Exec Total Coverage
Lines: 119 140 85.0%
Functions: 6 6 100.0%
Branches: 45 70 64.3%

Line Branch Exec Source
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 "libavcodec/packet_internal.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;
39 int audio_stream_idx;
40 PacketList pict_list;
41 int write_id3v2;
42 int id3v2_version;
43 } AIFFOutputContext;
44
45 3 static int put_id3v2_tags(AVFormatContext *s, AIFFOutputContext *aiff)
46 {
47 int ret;
48 uint64_t pos, end, size;
49 3 ID3v2EncContext id3v2 = { 0 };
50 3 AVIOContext *pb = s->pb;
51 3 PacketListEntry *list_entry = aiff->pict_list.head;
52
53
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3 if (!s->metadata && !s->nb_chapters && !list_entry)
54 return 0;
55
56 3 avio_wl32(pb, MKTAG('I', 'D', '3', ' '));
57 3 avio_wb32(pb, 0);
58 3 pos = avio_tell(pb);
59
60 3 ff_id3v2_start(&id3v2, pb, aiff->id3v2_version, ID3v2_DEFAULT_MAGIC);
61 3 ff_id3v2_write_metadata(s, &id3v2);
62
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8 while (list_entry) {
63
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5 if ((ret = ff_id3v2_write_apic(s, &id3v2, &list_entry->pkt)) < 0)
64 return ret;
65 5 list_entry = list_entry->next;
66 }
67 3 ff_id3v2_finish(&id3v2, pb, s->metadata_header_padding);
68
69 3 end = avio_tell(pb);
70 3 size = end - pos;
71
72 /* Update chunk size */
73 3 avio_seek(pb, pos - 4, SEEK_SET);
74 3 avio_wb32(pb, size);
75 3 avio_seek(pb, end, SEEK_SET);
76
77
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3 if (size & 1)
78 1 avio_w8(pb, 0);
79
80 3 return 0;
81 }
82
83 24 static void put_meta(AVFormatContext *s, const char *key, uint32_t id)
84 {
85 AVDictionaryEntry *tag;
86 24 AVIOContext *pb = s->pb;
87
88
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24 if (tag = av_dict_get(s->metadata, key, NULL, 0)) {
89 3 int size = strlen(tag->value);
90
91 3 avio_wl32(pb, id);
92 3 avio_wb32(pb, FFALIGN(size, 2));
93 3 avio_write(pb, tag->value, size);
94
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3 if (size & 1)
95 avio_w8(pb, 0);
96 }
97 24 }
98
99 6 static int aiff_write_header(AVFormatContext *s)
100 {
101 6 AIFFOutputContext *aiff = s->priv_data;
102 6 AVIOContext *pb = s->pb;
103 AVCodecParameters *par;
104 uint64_t sample_rate;
105 6 int i, aifc = 0;
106
107 6 aiff->audio_stream_idx = -1;
108
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17 for (i = 0; i < s->nb_streams; i++) {
109 11 AVStream *st = s->streams[i];
110
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11 if (aiff->audio_stream_idx < 0 && st->codecpar->codec_type == AVMEDIA_TYPE_AUDIO) {
111 6 aiff->audio_stream_idx = i;
112
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5 } 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
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6 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 6 par = s->streams[aiff->audio_stream_idx]->codecpar;
123
124 /* First verify if format is ok */
125
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6 if (!par->codec_tag)
126 return AVERROR(EINVAL);
127
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6 if (par->codec_tag != MKTAG('N','O','N','E'))
128 3 aifc = 1;
129
130 /* FORM AIFF header */
131 6 ffio_wfourcc(pb, "FORM");
132 6 aiff->form = avio_tell(pb);
133 6 avio_wb32(pb, 0); /* file length */
134
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6 ffio_wfourcc(pb, aifc ? "AIFC" : "AIFF");
135
136
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6 if (aifc) { // compressed audio
137
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3 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 3 ffio_wfourcc(pb, "FVER");
143 3 avio_wb32(pb, 4);
144 3 avio_wb32(pb, 0xA2805140);
145 }
146
147
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6 if (par->ch_layout.order == AV_CHANNEL_ORDER_NATIVE && par->ch_layout.nb_channels > 2) {
148 1 ffio_wfourcc(pb, "CHAN");
149 1 avio_wb32(pb, 12);
150 1 ff_mov_write_chan(pb, par->ch_layout.u.mask);
151 }
152
153 6 put_meta(s, "title", MKTAG('N', 'A', 'M', 'E'));
154 6 put_meta(s, "author", MKTAG('A', 'U', 'T', 'H'));
155 6 put_meta(s, "copyright", MKTAG('(', 'c', ')', ' '));
156 6 put_meta(s, "comment", MKTAG('A', 'N', 'N', 'O'));
157
158 /* Common chunk */
159 6 ffio_wfourcc(pb, "COMM");
160
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6 avio_wb32(pb, aifc ? 24 : 18); /* size */
161 6 avio_wb16(pb, par->ch_layout.nb_channels); /* Number of channels */
162
163 6 aiff->frames = avio_tell(pb);
164 6 avio_wb32(pb, 0); /* Number of frames */
165
166
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6 if (!par->bits_per_coded_sample)
167 par->bits_per_coded_sample = av_get_bits_per_sample(par->codec_id);
168
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6 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
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6 if (!par->block_align)
173 par->block_align = (par->bits_per_coded_sample * par->ch_layout.nb_channels) >> 3;
174
175 6 avio_wb16(pb, par->bits_per_coded_sample); /* Sample size */
176
177 6 sample_rate = av_double2int(par->sample_rate);
178 6 avio_wb16(pb, (sample_rate >> 52) + (16383 - 1023));
179 6 avio_wb64(pb, UINT64_C(1) << 63 | sample_rate << 11);
180
181
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6 if (aifc) {
182 3 avio_wl32(pb, par->codec_tag);
183 3 avio_wb16(pb, 0);
184 }
185
186
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6 if ( (par->codec_tag == MKTAG('Q','D','M','2')
187
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6 || 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 6 ffio_wfourcc(pb, "SSND");
195 6 aiff->ssnd = avio_tell(pb); /* Sound chunk size */
196 6 avio_wb32(pb, 0); /* Sound samples data size */
197 6 avio_wb32(pb, 0); /* Data offset */
198 6 avio_wb32(pb, 0); /* Block-size (block align) */
199
200 6 avpriv_set_pts_info(s->streams[aiff->audio_stream_idx], 64, 1,
201 6 s->streams[aiff->audio_stream_idx]->codecpar->sample_rate);
202
203 6 return 0;
204 }
205
206 9062 static int aiff_write_packet(AVFormatContext *s, AVPacket *pkt)
207 {
208 9062 AIFFOutputContext *aiff = s->priv_data;
209 9062 AVIOContext *pb = s->pb;
210
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9062 if (pkt->stream_index == aiff->audio_stream_idx)
211 9057 avio_write(pb, pkt->data, pkt->size);
212 else {
213 /* warn only once for each stream */
214
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5 if (s->streams[pkt->stream_index]->nb_frames == 1) {
215 av_log(s, AV_LOG_WARNING, "Got more than one picture in stream %d,"
216 " ignoring.\n", pkt->stream_index);
217 }
218
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5 if (s->streams[pkt->stream_index]->nb_frames >= 1)
219 return 0;
220
221 5 return avpriv_packet_list_put(&aiff->pict_list, pkt, NULL, 0);
222 }
223
224 9057 return 0;
225 }
226
227 6 static int aiff_write_trailer(AVFormatContext *s)
228 {
229 6 int ret = 0;
230 6 AVIOContext *pb = s->pb;
231 6 AIFFOutputContext *aiff = s->priv_data;
232 6 AVCodecParameters *par = s->streams[aiff->audio_stream_idx]->codecpar;
233
234 /* Chunks sizes must be even */
235 int64_t file_size, data_size;
236 6 data_size = avio_tell(pb);
237
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6 if (data_size & 1)
238 avio_w8(pb, 0);
239
240
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6 if (s->pb->seekable & AVIO_SEEKABLE_NORMAL) {
241 /* Write ID3 tags */
242
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6 if (aiff->write_id3v2)
243
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3 if ((ret = put_id3v2_tags(s, aiff)) < 0)
244 return ret;
245
246 /* File length */
247 6 file_size = avio_tell(pb);
248 6 avio_seek(pb, aiff->form, SEEK_SET);
249 6 avio_wb32(pb, file_size - aiff->form - 4);
250
251 /* Number of sample frames */
252 6 avio_seek(pb, aiff->frames, SEEK_SET);
253 6 avio_wb32(pb, (data_size - aiff->ssnd - 12) / par->block_align);
254
255 /* Sound Data chunk size */
256 6 avio_seek(pb, aiff->ssnd, SEEK_SET);
257 6 avio_wb32(pb, data_size - aiff->ssnd - 4);
258 }
259
260 6 return ret;
261 }
262
263 6 static void aiff_deinit(AVFormatContext *s)
264 {
265 6 AIFFOutputContext *aiff = s->priv_data;
266
267 6 avpriv_packet_list_free(&aiff->pict_list);
268 6 }
269
270 #define OFFSET(x) offsetof(AIFFOutputContext, x)
271 #define ENC AV_OPT_FLAG_ENCODING_PARAM
272 static const AVOption options[] = {
273 { "write_id3v2", "Enable ID3 tags writing.",
274 OFFSET(write_id3v2), AV_OPT_TYPE_BOOL, {.i64 = 0}, 0, 1, ENC },
275 { "id3v2_version", "Select ID3v2 version to write. Currently 3 and 4 are supported.",
276 OFFSET(id3v2_version), AV_OPT_TYPE_INT, {.i64 = 4}, 3, 4, ENC },
277 { NULL },
278 };
279
280 static const AVClass aiff_muxer_class = {
281 .class_name = "AIFF muxer",
282 .item_name = av_default_item_name,
283 .option = options,
284 .version = LIBAVUTIL_VERSION_INT,
285 };
286
287 const AVOutputFormat ff_aiff_muxer = {
288 .name = "aiff",
289 .long_name = NULL_IF_CONFIG_SMALL("Audio IFF"),
290 .mime_type = "audio/aiff",
291 .extensions = "aif,aiff,afc,aifc",
292 .priv_data_size = sizeof(AIFFOutputContext),
293 .audio_codec = AV_CODEC_ID_PCM_S16BE,
294 .video_codec = AV_CODEC_ID_PNG,
295 .write_header = aiff_write_header,
296 .write_packet = aiff_write_packet,
297 .write_trailer = aiff_write_trailer,
298 .deinit = aiff_deinit,
299 .codec_tag = ff_aiff_codec_tags_list,
300 .priv_class = &aiff_muxer_class,
301 };
302