rtmp: Automatically compute the hash for SWFVerification
[libav.git] / libavcodec / libfdk-aacenc.c
CommitLineData
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1/*
2 * AAC encoder wrapper
3 * Copyright (c) 2012 Martin Storsjo
4 *
5 * This file is part of Libav.
6 *
7 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22#include <fdk-aac/aacenc_lib.h>
23
24#include "avcodec.h"
25#include "audio_frame_queue.h"
26#include "internal.h"
27#include "libavutil/audioconvert.h"
28#include "libavutil/opt.h"
29
30typedef struct AACContext {
31 const AVClass *class;
32 HANDLE_AACENCODER handle;
33 int afterburner;
34 int eld_sbr;
35 int signaling;
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36 int latm;
37 int header_period;
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38
39 AudioFrameQueue afq;
40} AACContext;
41
42static const AVOption aac_enc_options[] = {
43 { "afterburner", "Afterburner (improved quality)", offsetof(AACContext, afterburner), AV_OPT_TYPE_INT, { 1 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
44 { "eld_sbr", "Enable SBR for ELD (for SBR in other configurations, use the -profile parameter)", offsetof(AACContext, eld_sbr), AV_OPT_TYPE_INT, { 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
45 { "signaling", "SBR/PS signaling style", offsetof(AACContext, signaling), AV_OPT_TYPE_INT, { -1 }, -1, 2, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
46 { "default", "Choose signaling implicitly (explicit hierarchical by default, implicit if global header is disabled)", 0, AV_OPT_TYPE_CONST, { -1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
47 { "implicit", "Implicit backwards compatible signaling", 0, AV_OPT_TYPE_CONST, { 0 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
48 { "explicit_sbr", "Explicit SBR, implicit PS signaling", 0, AV_OPT_TYPE_CONST, { 1 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
49 { "explicit_hierarchical", "Explicit hierarchical signaling", 0, AV_OPT_TYPE_CONST, { 2 }, 0, 0, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM, "signaling" },
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50 { "latm", "Output LATM/LOAS encapsulated data", offsetof(AACContext, latm), AV_OPT_TYPE_INT, { 0 }, 0, 1, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
51 { "header_period", "StreamMuxConfig and PCE repetition period (in frames)", offsetof(AACContext, header_period), AV_OPT_TYPE_INT, { 0 }, 0, 0xffff, AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_ENCODING_PARAM },
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52 { NULL }
53};
54
55static const AVClass aac_enc_class = {
56 "libfdk_aac", av_default_item_name, aac_enc_options, LIBAVUTIL_VERSION_INT
57};
58
59static const char *aac_get_error(AACENC_ERROR err)
60{
61 switch (err) {
62 case AACENC_OK:
63 return "No error";
64 case AACENC_INVALID_HANDLE:
65 return "Invalid handle";
66 case AACENC_MEMORY_ERROR:
67 return "Memory allocation error";
68 case AACENC_UNSUPPORTED_PARAMETER:
69 return "Unsupported parameter";
70 case AACENC_INVALID_CONFIG:
71 return "Invalid config";
72 case AACENC_INIT_ERROR:
73 return "Initialization error";
74 case AACENC_INIT_AAC_ERROR:
75 return "AAC library initialization error";
76 case AACENC_INIT_SBR_ERROR:
77 return "SBR library initialization error";
78 case AACENC_INIT_TP_ERROR:
79 return "Transport library initialization error";
80 case AACENC_INIT_META_ERROR:
81 return "Metadata library initialization error";
82 case AACENC_ENCODE_ERROR:
83 return "Encoding error";
84 case AACENC_ENCODE_EOF:
85 return "End of file";
86 default:
87 return "Unknown error";
88 }
89}
90
91static int aac_encode_close(AVCodecContext *avctx)
92{
93 AACContext *s = avctx->priv_data;
94
95 if (s->handle)
96 aacEncClose(&s->handle);
97#if FF_API_OLD_ENCODE_AUDIO
98 av_freep(&avctx->coded_frame);
99#endif
100 av_freep(&avctx->extradata);
101 ff_af_queue_close(&s->afq);
102
103 return 0;
104}
105
106static av_cold int aac_encode_init(AVCodecContext *avctx)
107{
108 AACContext *s = avctx->priv_data;
109 int ret = AVERROR(EINVAL);
110 AACENC_InfoStruct info = { 0 };
111 CHANNEL_MODE mode;
112 AACENC_ERROR err;
113 int aot = FF_PROFILE_AAC_LOW + 1;
114 int sce = 0, cpe = 0;
115
116 if ((err = aacEncOpen(&s->handle, 0, avctx->channels)) != AACENC_OK) {
117 av_log(avctx, AV_LOG_ERROR, "Unable to open the encoder: %s\n",
118 aac_get_error(err));
119 goto error;
120 }
121
122 if (avctx->profile != FF_PROFILE_UNKNOWN)
123 aot = avctx->profile + 1;
124
125 if ((err = aacEncoder_SetParam(s->handle, AACENC_AOT, aot)) != AACENC_OK) {
126 av_log(avctx, AV_LOG_ERROR, "Unable to set the AOT %d: %s\n",
127 aot, aac_get_error(err));
128 goto error;
129 }
130
131 if (aot == FF_PROFILE_AAC_ELD + 1 && s->eld_sbr) {
132 if ((err = aacEncoder_SetParam(s->handle, AACENC_SBR_MODE,
133 1)) != AACENC_OK) {
134 av_log(avctx, AV_LOG_ERROR, "Unable to enable SBR for ELD: %s\n",
135 aac_get_error(err));
136 goto error;
137 }
138 }
139
140 if ((err = aacEncoder_SetParam(s->handle, AACENC_SAMPLERATE,
141 avctx->sample_rate)) != AACENC_OK) {
142 av_log(avctx, AV_LOG_ERROR, "Unable to set the sample rate %d: %s\n",
143 avctx->sample_rate, aac_get_error(err));
144 goto error;
145 }
146
147 switch (avctx->channels) {
148 case 1: mode = MODE_1; sce = 1; cpe = 0; break;
149 case 2: mode = MODE_2; sce = 0; cpe = 1; break;
150 case 3: mode = MODE_1_2; sce = 1; cpe = 1; break;
151 case 4: mode = MODE_1_2_1; sce = 2; cpe = 1; break;
152 case 5: mode = MODE_1_2_2; sce = 1; cpe = 2; break;
153 case 6: mode = MODE_1_2_2_1; sce = 2; cpe = 2; break;
154 default:
155 av_log(avctx, AV_LOG_ERROR,
156 "Unsupported number of channels %d\n", avctx->channels);
157 goto error;
158 }
159
160 if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELMODE,
161 mode)) != AACENC_OK) {
162 av_log(avctx, AV_LOG_ERROR,
163 "Unable to set channel mode %d: %s\n", mode, aac_get_error(err));
164 goto error;
165 }
166
167 if ((err = aacEncoder_SetParam(s->handle, AACENC_CHANNELORDER,
168 1)) != AACENC_OK) {
169 av_log(avctx, AV_LOG_ERROR,
170 "Unable to set wav channel order %d: %s\n",
171 mode, aac_get_error(err));
172 goto error;
173 }
174
175 if (avctx->flags & CODEC_FLAG_QSCALE) {
176 int mode = avctx->global_quality;
177 if (mode < 1 || mode > 5) {
178 av_log(avctx, AV_LOG_WARNING,
179 "VBR quality %d out of range, should be 1-5\n", mode);
180 mode = av_clip(mode, 1, 5);
181 }
182 if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATEMODE,
183 mode)) != AACENC_OK) {
184 av_log(avctx, AV_LOG_ERROR, "Unable to set the VBR bitrate mode %d: %s\n",
185 mode, aac_get_error(err));
186 goto error;
187 }
188 } else {
189 if (avctx->bit_rate <= 0) {
190 if (avctx->profile == FF_PROFILE_AAC_HE_V2) {
191 sce = 1;
192 cpe = 0;
193 }
194 avctx->bit_rate = (96*sce + 128*cpe) * avctx->sample_rate / 44;
195 if (avctx->profile == FF_PROFILE_AAC_HE ||
196 avctx->profile == FF_PROFILE_AAC_HE_V2 ||
197 s->eld_sbr)
198 avctx->bit_rate /= 2;
199 }
200 if ((err = aacEncoder_SetParam(s->handle, AACENC_BITRATE,
201 avctx->bit_rate)) != AACENC_OK) {
202 av_log(avctx, AV_LOG_ERROR, "Unable to set the bitrate %d: %s\n",
203 avctx->bit_rate, aac_get_error(err));
204 goto error;
205 }
206 }
207
208 /* Choose bitstream format - if global header is requested, use
209 * raw access units, otherwise use ADTS. */
210 if ((err = aacEncoder_SetParam(s->handle, AACENC_TRANSMUX,
160a27c5 211 avctx->flags & CODEC_FLAG_GLOBAL_HEADER ? 0 : s->latm ? 10 : 2)) != AACENC_OK) {
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212 av_log(avctx, AV_LOG_ERROR, "Unable to set the transmux format: %s\n",
213 aac_get_error(err));
214 goto error;
215 }
216
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217 if (s->latm && s->header_period) {
218 if ((err = aacEncoder_SetParam(s->handle, AACENC_HEADER_PERIOD,
219 s->header_period)) != AACENC_OK) {
220 av_log(avctx, AV_LOG_ERROR, "Unable to set header period: %s\n",
221 aac_get_error(err));
222 goto error;
223 }
224 }
225
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226 /* If no signaling mode is chosen, use explicit hierarchical signaling
227 * if using mp4 mode (raw access units, with global header) and
228 * implicit signaling if using ADTS. */
229 if (s->signaling < 0)
230 s->signaling = avctx->flags & CODEC_FLAG_GLOBAL_HEADER ? 2 : 0;
231
232 if ((err = aacEncoder_SetParam(s->handle, AACENC_SIGNALING_MODE,
233 s->signaling)) != AACENC_OK) {
234 av_log(avctx, AV_LOG_ERROR, "Unable to set signaling mode %d: %s\n",
235 s->signaling, aac_get_error(err));
236 goto error;
237 }
238
239 if ((err = aacEncoder_SetParam(s->handle, AACENC_AFTERBURNER,
240 s->afterburner)) != AACENC_OK) {
241 av_log(avctx, AV_LOG_ERROR, "Unable to set afterburner to %d: %s\n",
242 s->afterburner, aac_get_error(err));
243 goto error;
244 }
245
7548831c 246 if (avctx->cutoff > 0) {
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247 if (avctx->cutoff < (avctx->sample_rate + 255) >> 8) {
248 av_log(avctx, AV_LOG_ERROR, "cutoff valid range is %d-20000\n",
249 (avctx->sample_rate + 255) >> 8);
250 goto error;
251 }
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252 if ((err = aacEncoder_SetParam(s->handle, AACENC_BANDWIDTH,
253 avctx->cutoff)) != AACENC_OK) {
254 av_log(avctx, AV_LOG_ERROR, "Unable to set the encoder bandwith to %d: %s\n",
255 avctx->cutoff, aac_get_error(err));
256 goto error;
257 }
258 }
259
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260 if ((err = aacEncEncode(s->handle, NULL, NULL, NULL, NULL)) != AACENC_OK) {
261 av_log(avctx, AV_LOG_ERROR, "Unable to initialize the encoder: %s\n",
262 aac_get_error(err));
263 return AVERROR(EINVAL);
264 }
265
266 if ((err = aacEncInfo(s->handle, &info)) != AACENC_OK) {
267 av_log(avctx, AV_LOG_ERROR, "Unable to get encoder info: %s\n",
268 aac_get_error(err));
269 goto error;
270 }
271
272#if FF_API_OLD_ENCODE_AUDIO
273 avctx->coded_frame = avcodec_alloc_frame();
274 if (!avctx->coded_frame) {
275 ret = AVERROR(ENOMEM);
276 goto error;
277 }
278#endif
279 avctx->frame_size = info.frameLength;
280 avctx->delay = info.encoderDelay;
281 ff_af_queue_init(avctx, &s->afq);
282
283 if (avctx->flags & CODEC_FLAG_GLOBAL_HEADER) {
284 avctx->extradata_size = info.confSize;
285 avctx->extradata = av_mallocz(avctx->extradata_size +
286 FF_INPUT_BUFFER_PADDING_SIZE);
287 if (!avctx->extradata) {
288 ret = AVERROR(ENOMEM);
289 goto error;
290 }
291
292 memcpy(avctx->extradata, info.confBuf, info.confSize);
293 }
294 return 0;
295error:
296 aac_encode_close(avctx);
297 return ret;
298}
299
300static int aac_encode_frame(AVCodecContext *avctx, AVPacket *avpkt,
301 const AVFrame *frame, int *got_packet_ptr)
302{
303 AACContext *s = avctx->priv_data;
304 AACENC_BufDesc in_buf = { 0 }, out_buf = { 0 };
305 AACENC_InArgs in_args = { 0 };
306 AACENC_OutArgs out_args = { 0 };
307 int in_buffer_identifier = IN_AUDIO_DATA;
308 int in_buffer_size, in_buffer_element_size;
309 int out_buffer_identifier = OUT_BITSTREAM_DATA;
310 int out_buffer_size, out_buffer_element_size;
311 void *in_ptr, *out_ptr;
312 int ret;
313 AACENC_ERROR err;
314
315 /* handle end-of-stream small frame and flushing */
316 if (!frame) {
317 in_args.numInSamples = -1;
318 } else {
319 in_ptr = frame->data[0];
320 in_buffer_size = 2 * avctx->channels * frame->nb_samples;
321 in_buffer_element_size = 2;
322
323 in_args.numInSamples = avctx->channels * frame->nb_samples;
324 in_buf.numBufs = 1;
325 in_buf.bufs = &in_ptr;
326 in_buf.bufferIdentifiers = &in_buffer_identifier;
327 in_buf.bufSizes = &in_buffer_size;
328 in_buf.bufElSizes = &in_buffer_element_size;
329
330 /* add current frame to the queue */
331 if ((ret = ff_af_queue_add(&s->afq, frame) < 0))
332 return ret;
333 }
334
335 /* The maximum packet size is 6144 bits aka 768 bytes per channel. */
336 if ((ret = ff_alloc_packet(avpkt, FFMAX(8192, 768 * avctx->channels)))) {
337 av_log(avctx, AV_LOG_ERROR, "Error getting output packet\n");
338 return ret;
339 }
340
341 out_ptr = avpkt->data;
342 out_buffer_size = avpkt->size;
343 out_buffer_element_size = 1;
344 out_buf.numBufs = 1;
345 out_buf.bufs = &out_ptr;
346 out_buf.bufferIdentifiers = &out_buffer_identifier;
347 out_buf.bufSizes = &out_buffer_size;
348 out_buf.bufElSizes = &out_buffer_element_size;
349
350 if ((err = aacEncEncode(s->handle, &in_buf, &out_buf, &in_args,
351 &out_args)) != AACENC_OK) {
352 if (!frame && err == AACENC_ENCODE_EOF)
353 return 0;
354 av_log(avctx, AV_LOG_ERROR, "Unable to encode frame: %s\n",
355 aac_get_error(err));
356 return AVERROR(EINVAL);
357 }
358
359 if (!out_args.numOutBytes)
360 return 0;
361
362 /* Get the next frame pts & duration */
363 ff_af_queue_remove(&s->afq, avctx->frame_size, &avpkt->pts,
364 &avpkt->duration);
365
366 avpkt->size = out_args.numOutBytes;
367 *got_packet_ptr = 1;
368 return 0;
369}
370
371static const AVProfile profiles[] = {
372 { FF_PROFILE_AAC_LOW, "LC" },
373 { FF_PROFILE_AAC_HE, "HE-AAC" },
374 { FF_PROFILE_AAC_HE_V2, "HE-AACv2" },
375 { FF_PROFILE_AAC_LD, "LD" },
376 { FF_PROFILE_AAC_ELD, "ELD" },
377 { FF_PROFILE_UNKNOWN },
378};
379
380static const AVCodecDefault aac_encode_defaults[] = {
381 { "b", "0" },
382 { NULL }
383};
384
385static const uint64_t aac_channel_layout[] = {
386 AV_CH_LAYOUT_MONO,
387 AV_CH_LAYOUT_STEREO,
388 AV_CH_LAYOUT_SURROUND,
389 AV_CH_LAYOUT_4POINT0,
390 AV_CH_LAYOUT_5POINT0_BACK,
391 AV_CH_LAYOUT_5POINT1_BACK,
392 0,
393};
394
395AVCodec ff_libfdk_aac_encoder = {
396 .name = "libfdk_aac",
397 .type = AVMEDIA_TYPE_AUDIO,
36ef5369 398 .id = AV_CODEC_ID_AAC,
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399 .priv_data_size = sizeof(AACContext),
400 .init = aac_encode_init,
401 .encode2 = aac_encode_frame,
402 .close = aac_encode_close,
403 .capabilities = CODEC_CAP_SMALL_LAST_FRAME | CODEC_CAP_DELAY,
404 .sample_fmts = (const enum AVSampleFormat[]){ AV_SAMPLE_FMT_S16,
405 AV_SAMPLE_FMT_NONE },
406 .long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"),
407 .priv_class = &aac_enc_class,
408 .defaults = aac_encode_defaults,
409 .profiles = profiles,
410 .channel_layouts = aac_channel_layout,
411};