3 * Copyright (c) 2012 Martin Storsjo
5 * This file is part of FFmpeg.
7 * Permission to use, copy, modify, and/or distribute this software for any
8 * purpose with or without fee is hereby granted, provided that the above
9 * copyright notice and this permission notice appear in all copies.
11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
20 #include <fdk-aac/aacdecoder_lib.h>
22 #include "libavutil/channel_layout.h"
23 #include "libavutil/common.h"
24 #include "libavutil/opt.h"
28 #ifdef AACDECODER_LIB_VL0
29 #define FDKDEC_VER_AT_LEAST(vl0, vl1) \
30 ((AACDECODER_LIB_VL0 > vl0) || \
31 (AACDECODER_LIB_VL0 == vl0 && AACDECODER_LIB_VL1 >= vl1))
33 #define FDKDEC_VER_AT_LEAST(vl0, vl1) 0
36 #if !FDKDEC_VER_AT_LEAST(2, 5) // < 2.5.10
37 #define AAC_PCM_MAX_OUTPUT_CHANNELS AAC_PCM_OUTPUT_CHANNELS
41 CONCEAL_METHOD_SPECTRAL_MUTING = 0,
42 CONCEAL_METHOD_NOISE_SUBSTITUTION = 1,
43 CONCEAL_METHOD_ENERGY_INTERPOLATION = 2,
47 typedef struct FDKAACDecContext {
49 HANDLE_AACDECODER handle;
50 uint8_t *decoder_buffer;
51 int decoder_buffer_size;
64 #define DMX_ANC_BUFFSIZE 128
65 #define DECODER_MAX_CHANNELS 8
66 #define DECODER_BUFFSIZE 2048 * sizeof(INT_PCM)
68 #define OFFSET(x) offsetof(FDKAACDecContext, x)
69 #define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
70 static const AVOption fdk_aac_dec_options[] = {
71 { "conceal", "Error concealment method", OFFSET(conceal_method), AV_OPT_TYPE_INT, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, CONCEAL_METHOD_SPECTRAL_MUTING, CONCEAL_METHOD_NB - 1, AD, "conceal" },
72 { "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, "conceal" },
73 { "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, "conceal" },
74 { "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, "conceal" },
75 { "drc_boost", "Dynamic Range Control: boost, where [0] is none and [127] is max boost",
76 OFFSET(drc_boost), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL },
77 { "drc_cut", "Dynamic Range Control: attenuation factor, where [0] is none and [127] is max compression",
78 OFFSET(drc_cut), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL },
79 { "drc_level", "Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB",
80 OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 127, AD, NULL },
81 { "drc_heavy", "Dynamic Range Control: heavy compression, where [1] is on (RF mode) and [0] is off",
82 OFFSET(drc_heavy), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, NULL },
83 #if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
84 { "level_limit", "Signal level limiting", OFFSET(level_limit), AV_OPT_TYPE_INT, { .i64 = 0 }, -1, 1, AD },
86 #if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0
87 { "drc_effect","Dynamic Range Control: effect type, where e.g. [0] is none and [6] is general",
88 OFFSET(drc_effect), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 8, AD, NULL },
93 static const AVClass fdk_aac_dec_class = {
94 .class_name = "libfdk-aac decoder",
95 .item_name = av_default_item_name,
96 .option = fdk_aac_dec_options,
97 .version = LIBAVUTIL_VERSION_INT,
100 static int get_stream_info(AVCodecContext *avctx)
102 FDKAACDecContext *s = avctx->priv_data;
103 CStreamInfo *info = aacDecoder_GetStreamInfo(s->handle);
104 int channel_counts[0x24] = { 0 };
106 uint64_t ch_layout = 0;
109 av_log(avctx, AV_LOG_ERROR, "Unable to get stream info\n");
110 return AVERROR_UNKNOWN;
113 if (info->sampleRate <= 0) {
114 av_log(avctx, AV_LOG_ERROR, "Stream info not initialized\n");
115 return AVERROR_UNKNOWN;
117 avctx->sample_rate = info->sampleRate;
118 avctx->frame_size = info->frameSize;
119 #if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
120 s->output_delay = info->outputDelay;
123 for (i = 0; i < info->numChannels; i++) {
124 AUDIO_CHANNEL_TYPE ctype = info->pChannelType[i];
125 if (ctype <= ACT_NONE || ctype >= FF_ARRAY_ELEMS(channel_counts)) {
126 av_log(avctx, AV_LOG_WARNING, "unknown channel type\n");
129 channel_counts[ctype]++;
131 av_log(avctx, AV_LOG_DEBUG,
132 "%d channels - front:%d side:%d back:%d lfe:%d top:%d\n",
134 channel_counts[ACT_FRONT], channel_counts[ACT_SIDE],
135 channel_counts[ACT_BACK], channel_counts[ACT_LFE],
136 channel_counts[ACT_FRONT_TOP] + channel_counts[ACT_SIDE_TOP] +
137 channel_counts[ACT_BACK_TOP] + channel_counts[ACT_TOP]);
139 switch (channel_counts[ACT_FRONT]) {
141 ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_LEFT_OF_CENTER |
142 AV_CH_FRONT_RIGHT_OF_CENTER;
145 ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER;
148 ch_layout |= AV_CH_LAYOUT_STEREO;
151 ch_layout |= AV_CH_FRONT_CENTER;
154 av_log(avctx, AV_LOG_WARNING,
155 "unsupported number of front channels: %d\n",
156 channel_counts[ACT_FRONT]);
160 if (channel_counts[ACT_SIDE] > 0) {
161 if (channel_counts[ACT_SIDE] == 2) {
162 ch_layout |= AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT;
164 av_log(avctx, AV_LOG_WARNING,
165 "unsupported number of side channels: %d\n",
166 channel_counts[ACT_SIDE]);
170 if (channel_counts[ACT_BACK] > 0) {
171 switch (channel_counts[ACT_BACK]) {
173 ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | AV_CH_BACK_CENTER;
176 ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT;
179 ch_layout |= AV_CH_BACK_CENTER;
182 av_log(avctx, AV_LOG_WARNING,
183 "unsupported number of back channels: %d\n",
184 channel_counts[ACT_BACK]);
189 if (channel_counts[ACT_LFE] > 0) {
190 if (channel_counts[ACT_LFE] == 1) {
191 ch_layout |= AV_CH_LOW_FREQUENCY;
193 av_log(avctx, AV_LOG_WARNING,
194 "unsupported number of LFE channels: %d\n",
195 channel_counts[ACT_LFE]);
200 av_get_channel_layout_nb_channels(ch_layout) != info->numChannels) {
201 av_log(avctx, AV_LOG_WARNING, "unsupported channel configuration\n");
205 avctx->channel_layout = 0;
207 avctx->channel_layout = ch_layout;
209 avctx->channels = info->numChannels;
214 static av_cold int fdk_aac_decode_close(AVCodecContext *avctx)
216 FDKAACDecContext *s = avctx->priv_data;
219 aacDecoder_Close(s->handle);
220 av_freep(&s->decoder_buffer);
221 av_freep(&s->anc_buffer);
226 static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
228 FDKAACDecContext *s = avctx->priv_data;
229 AAC_DECODER_ERROR err;
231 s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
233 av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
234 return AVERROR_UNKNOWN;
237 if (avctx->extradata_size) {
238 if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata,
239 &avctx->extradata_size)) != AAC_DEC_OK) {
240 av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n");
241 return AVERROR_INVALIDDATA;
245 if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
246 s->conceal_method)) != AAC_DEC_OK) {
247 av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
248 return AVERROR_UNKNOWN;
251 if (avctx->request_channel_layout > 0 &&
252 avctx->request_channel_layout != AV_CH_LAYOUT_NATIVE) {
253 int downmix_channels = -1;
255 switch (avctx->request_channel_layout) {
256 case AV_CH_LAYOUT_STEREO:
257 case AV_CH_LAYOUT_STEREO_DOWNMIX:
258 downmix_channels = 2;
260 case AV_CH_LAYOUT_MONO:
261 downmix_channels = 1;
264 av_log(avctx, AV_LOG_WARNING, "Invalid request_channel_layout\n");
268 if (downmix_channels != -1) {
269 if (aacDecoder_SetParam(s->handle, AAC_PCM_MAX_OUTPUT_CHANNELS,
270 downmix_channels) != AAC_DEC_OK) {
271 av_log(avctx, AV_LOG_WARNING, "Unable to set output channels in the decoder\n");
273 s->anc_buffer = av_malloc(DMX_ANC_BUFFSIZE);
274 if (!s->anc_buffer) {
275 av_log(avctx, AV_LOG_ERROR, "Unable to allocate ancillary buffer for the decoder\n");
276 return AVERROR(ENOMEM);
278 if (aacDecoder_AncDataInit(s->handle, s->anc_buffer, DMX_ANC_BUFFSIZE)) {
279 av_log(avctx, AV_LOG_ERROR, "Unable to register downmix ancillary buffer in the decoder\n");
280 return AVERROR_UNKNOWN;
286 if (s->drc_boost != -1) {
287 if (aacDecoder_SetParam(s->handle, AAC_DRC_BOOST_FACTOR, s->drc_boost) != AAC_DEC_OK) {
288 av_log(avctx, AV_LOG_ERROR, "Unable to set DRC boost factor in the decoder\n");
289 return AVERROR_UNKNOWN;
293 if (s->drc_cut != -1) {
294 if (aacDecoder_SetParam(s->handle, AAC_DRC_ATTENUATION_FACTOR, s->drc_cut) != AAC_DEC_OK) {
295 av_log(avctx, AV_LOG_ERROR, "Unable to set DRC attenuation factor in the decoder\n");
296 return AVERROR_UNKNOWN;
300 if (s->drc_level != -1) {
301 if (aacDecoder_SetParam(s->handle, AAC_DRC_REFERENCE_LEVEL, s->drc_level) != AAC_DEC_OK) {
302 av_log(avctx, AV_LOG_ERROR, "Unable to set DRC reference level in the decoder\n");
303 return AVERROR_UNKNOWN;
307 if (s->drc_heavy != -1) {
308 if (aacDecoder_SetParam(s->handle, AAC_DRC_HEAVY_COMPRESSION, s->drc_heavy) != AAC_DEC_OK) {
309 av_log(avctx, AV_LOG_ERROR, "Unable to set DRC heavy compression in the decoder\n");
310 return AVERROR_UNKNOWN;
314 #if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10
315 if (aacDecoder_SetParam(s->handle, AAC_PCM_LIMITER_ENABLE, s->level_limit) != AAC_DEC_OK) {
316 av_log(avctx, AV_LOG_ERROR, "Unable to set in signal level limiting in the decoder\n");
317 return AVERROR_UNKNOWN;
321 #if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0
322 if (s->drc_effect != -1) {
323 if (aacDecoder_SetParam(s->handle, AAC_UNIDRC_SET_EFFECT, s->drc_effect) != AAC_DEC_OK) {
324 av_log(avctx, AV_LOG_ERROR, "Unable to set DRC effect type in the decoder\n");
325 return AVERROR_UNKNOWN;
330 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
332 s->decoder_buffer_size = DECODER_BUFFSIZE * DECODER_MAX_CHANNELS;
333 s->decoder_buffer = av_malloc(s->decoder_buffer_size);
334 if (!s->decoder_buffer)
335 return AVERROR(ENOMEM);
340 static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data,
341 int *got_frame_ptr, AVPacket *avpkt)
343 FDKAACDecContext *s = avctx->priv_data;
344 AVFrame *frame = data;
346 AAC_DECODER_ERROR err;
347 UINT valid = avpkt->size;
349 err = aacDecoder_Fill(s->handle, &avpkt->data, &avpkt->size, &valid);
350 if (err != AAC_DEC_OK) {
351 av_log(avctx, AV_LOG_ERROR, "aacDecoder_Fill() failed: %x\n", err);
352 return AVERROR_INVALIDDATA;
355 err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) s->decoder_buffer, s->decoder_buffer_size / sizeof(INT_PCM), 0);
356 if (err == AAC_DEC_NOT_ENOUGH_BITS) {
357 ret = avpkt->size - valid;
360 if (err != AAC_DEC_OK) {
361 av_log(avctx, AV_LOG_ERROR,
362 "aacDecoder_DecodeFrame() failed: %x\n", err);
363 ret = AVERROR_UNKNOWN;
367 if ((ret = get_stream_info(avctx)) < 0)
369 frame->nb_samples = avctx->frame_size;
371 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
374 if (frame->pts != AV_NOPTS_VALUE)
375 frame->pts -= av_rescale_q(s->output_delay,
376 (AVRational){1, avctx->sample_rate},
379 memcpy(frame->extended_data[0], s->decoder_buffer,
380 avctx->channels * avctx->frame_size *
381 av_get_bytes_per_sample(avctx->sample_fmt));
384 ret = avpkt->size - valid;
390 static av_cold void fdk_aac_decode_flush(AVCodecContext *avctx)
392 FDKAACDecContext *s = avctx->priv_data;
393 AAC_DECODER_ERROR err;
398 if ((err = aacDecoder_SetParam(s->handle,
399 AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK)
400 av_log(avctx, AV_LOG_WARNING, "failed to clear buffer when flushing\n");
403 AVCodec ff_libfdk_aac_decoder = {
404 .name = "libfdk_aac",
405 .long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"),
406 .type = AVMEDIA_TYPE_AUDIO,
407 .id = AV_CODEC_ID_AAC,
408 .priv_data_size = sizeof(FDKAACDecContext),
409 .init = fdk_aac_decode_init,
410 .decode = fdk_aac_decode_frame,
411 .close = fdk_aac_decode_close,
412 .flush = fdk_aac_decode_flush,
413 .capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_CHANNEL_CONF,
414 .priv_class = &fdk_aac_dec_class,
415 .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
416 FF_CODEC_CAP_INIT_CLEANUP,
417 .wrapper_name = "libfdk",