FFmpeg
 All Data Structures Namespaces Files Functions Variables Typedefs Enumerations Enumerator Macros Groups Pages
libfdk-aacdec.c
Go to the documentation of this file.
1 /*
2  * AAC decoder wrapper
3  * Copyright (c) 2012 Martin Storsjo
4  *
5  * This file is part of FFmpeg.
6  *
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.
10  *
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.
18  */
19 
20 #include <fdk-aac/aacdecoder_lib.h>
21 
23 #include "libavutil/common.h"
24 #include "libavutil/opt.h"
25 #include "avcodec.h"
26 #include "internal.h"
27 
28 /* The version macro is introduced the same time as the setting enum was
29  * changed, so this check should suffice. */
30 #ifndef AACDECODER_LIB_VL0
31 #define AAC_PCM_MAX_OUTPUT_CHANNELS AAC_PCM_OUTPUT_CHANNELS
32 #endif
33 
39 };
40 
41 typedef struct FDKAACDecContext {
42  const AVClass *class;
43  HANDLE_AACDECODER handle;
48  int drc_level;
49  int drc_boost;
50  int drc_heavy;
51  int drc_cut;
54 
55 
56 #define DMX_ANC_BUFFSIZE 128
57 #define DECODER_MAX_CHANNELS 8
58 #define DECODER_BUFFSIZE 2048 * sizeof(INT_PCM)
59 
60 #define OFFSET(x) offsetof(FDKAACDecContext, x)
61 #define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
62 static const AVOption fdk_aac_dec_options[] = {
63  { "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" },
64  { "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, "conceal" },
65  { "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, "conceal" },
66  { "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, "conceal" },
67  { "drc_boost", "Dynamic Range Control: boost, where [0] is none and [127] is max boost",
68  OFFSET(drc_boost), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL },
69  { "drc_cut", "Dynamic Range Control: attenuation factor, where [0] is none and [127] is max compression",
70  OFFSET(drc_cut), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 127, AD, NULL },
71  { "drc_level", "Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB",
72  OFFSET(drc_level), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 127, AD, NULL },
73  { "drc_heavy", "Dynamic Range Control: heavy compression, where [1] is on (RF mode) and [0] is off",
74  OFFSET(drc_heavy), AV_OPT_TYPE_INT, { .i64 = -1}, -1, 1, AD, NULL },
75 #ifdef AACDECODER_LIB_VL0
76  { "level_limit", "Signal level limiting", OFFSET(level_limit), AV_OPT_TYPE_INT, { .i64 = 0 }, -1, 1, AD },
77 #endif
78  { NULL }
79 };
80 
81 static const AVClass fdk_aac_dec_class = {
83 };
84 
85 static int get_stream_info(AVCodecContext *avctx)
86 {
87  FDKAACDecContext *s = avctx->priv_data;
88  CStreamInfo *info = aacDecoder_GetStreamInfo(s->handle);
89  int channel_counts[0x24] = { 0 };
90  int i, ch_error = 0;
91  uint64_t ch_layout = 0;
92 
93  if (!info) {
94  av_log(avctx, AV_LOG_ERROR, "Unable to get stream info\n");
95  return AVERROR_UNKNOWN;
96  }
97 
98  if (info->sampleRate <= 0) {
99  av_log(avctx, AV_LOG_ERROR, "Stream info not initialized\n");
100  return AVERROR_UNKNOWN;
101  }
102  avctx->sample_rate = info->sampleRate;
103  avctx->frame_size = info->frameSize;
104 
105  for (i = 0; i < info->numChannels; i++) {
106  AUDIO_CHANNEL_TYPE ctype = info->pChannelType[i];
107  if (ctype <= ACT_NONE || ctype >= FF_ARRAY_ELEMS(channel_counts)) {
108  av_log(avctx, AV_LOG_WARNING, "unknown channel type\n");
109  break;
110  }
111  channel_counts[ctype]++;
112  }
113  av_log(avctx, AV_LOG_DEBUG,
114  "%d channels - front:%d side:%d back:%d lfe:%d top:%d\n",
115  info->numChannels,
116  channel_counts[ACT_FRONT], channel_counts[ACT_SIDE],
117  channel_counts[ACT_BACK], channel_counts[ACT_LFE],
118  channel_counts[ACT_FRONT_TOP] + channel_counts[ACT_SIDE_TOP] +
119  channel_counts[ACT_BACK_TOP] + channel_counts[ACT_TOP]);
120 
121  switch (channel_counts[ACT_FRONT]) {
122  case 4:
125  break;
126  case 3:
128  break;
129  case 2:
130  ch_layout |= AV_CH_LAYOUT_STEREO;
131  break;
132  case 1:
133  ch_layout |= AV_CH_FRONT_CENTER;
134  break;
135  default:
136  av_log(avctx, AV_LOG_WARNING,
137  "unsupported number of front channels: %d\n",
138  channel_counts[ACT_FRONT]);
139  ch_error = 1;
140  break;
141  }
142  if (channel_counts[ACT_SIDE] > 0) {
143  if (channel_counts[ACT_SIDE] == 2) {
144  ch_layout |= AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT;
145  } else {
146  av_log(avctx, AV_LOG_WARNING,
147  "unsupported number of side channels: %d\n",
148  channel_counts[ACT_SIDE]);
149  ch_error = 1;
150  }
151  }
152  if (channel_counts[ACT_BACK] > 0) {
153  switch (channel_counts[ACT_BACK]) {
154  case 3:
156  break;
157  case 2:
158  ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT;
159  break;
160  case 1:
161  ch_layout |= AV_CH_BACK_CENTER;
162  break;
163  default:
164  av_log(avctx, AV_LOG_WARNING,
165  "unsupported number of back channels: %d\n",
166  channel_counts[ACT_BACK]);
167  ch_error = 1;
168  break;
169  }
170  }
171  if (channel_counts[ACT_LFE] > 0) {
172  if (channel_counts[ACT_LFE] == 1) {
173  ch_layout |= AV_CH_LOW_FREQUENCY;
174  } else {
175  av_log(avctx, AV_LOG_WARNING,
176  "unsupported number of LFE channels: %d\n",
177  channel_counts[ACT_LFE]);
178  ch_error = 1;
179  }
180  }
181  if (!ch_error &&
182  av_get_channel_layout_nb_channels(ch_layout) != info->numChannels) {
183  av_log(avctx, AV_LOG_WARNING, "unsupported channel configuration\n");
184  ch_error = 1;
185  }
186  if (ch_error)
187  avctx->channel_layout = 0;
188  else
189  avctx->channel_layout = ch_layout;
190 
191  avctx->channels = info->numChannels;
192 
193  return 0;
194 }
195 
197 {
198  FDKAACDecContext *s = avctx->priv_data;
199 
200  if (s->handle)
201  aacDecoder_Close(s->handle);
203  av_freep(&s->anc_buffer);
204 
205  return 0;
206 }
207 
209 {
210  FDKAACDecContext *s = avctx->priv_data;
211  AAC_DECODER_ERROR err;
212 
213  s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
214  if (!s->handle) {
215  av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
216  return AVERROR_UNKNOWN;
217  }
218 
219  if (avctx->extradata_size) {
220  if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata,
221  &avctx->extradata_size)) != AAC_DEC_OK) {
222  av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n");
223  return AVERROR_INVALIDDATA;
224  }
225  }
226 
227  if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
228  s->conceal_method)) != AAC_DEC_OK) {
229  av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
230  return AVERROR_UNKNOWN;
231  }
232 
233  if (avctx->request_channel_layout > 0 &&
235  int downmix_channels = -1;
236 
237  switch (avctx->request_channel_layout) {
238  case AV_CH_LAYOUT_STEREO:
240  downmix_channels = 2;
241  break;
242  case AV_CH_LAYOUT_MONO:
243  downmix_channels = 1;
244  break;
245  default:
246  av_log(avctx, AV_LOG_WARNING, "Invalid request_channel_layout\n");
247  break;
248  }
249 
250  if (downmix_channels != -1) {
251  if (aacDecoder_SetParam(s->handle, AAC_PCM_MAX_OUTPUT_CHANNELS,
252  downmix_channels) != AAC_DEC_OK) {
253  av_log(avctx, AV_LOG_WARNING, "Unable to set output channels in the decoder\n");
254  } else {
256  if (!s->anc_buffer) {
257  av_log(avctx, AV_LOG_ERROR, "Unable to allocate ancillary buffer for the decoder\n");
258  return AVERROR(ENOMEM);
259  }
260  if (aacDecoder_AncDataInit(s->handle, s->anc_buffer, DMX_ANC_BUFFSIZE)) {
261  av_log(avctx, AV_LOG_ERROR, "Unable to register downmix ancillary buffer in the decoder\n");
262  return AVERROR_UNKNOWN;
263  }
264  }
265  }
266  }
267 
268  if (s->drc_boost != -1) {
269  if (aacDecoder_SetParam(s->handle, AAC_DRC_BOOST_FACTOR, s->drc_boost) != AAC_DEC_OK) {
270  av_log(avctx, AV_LOG_ERROR, "Unable to set DRC boost factor in the decoder\n");
271  return AVERROR_UNKNOWN;
272  }
273  }
274 
275  if (s->drc_cut != -1) {
276  if (aacDecoder_SetParam(s->handle, AAC_DRC_ATTENUATION_FACTOR, s->drc_cut) != AAC_DEC_OK) {
277  av_log(avctx, AV_LOG_ERROR, "Unable to set DRC attenuation factor in the decoder\n");
278  return AVERROR_UNKNOWN;
279  }
280  }
281 
282  if (s->drc_level != -1) {
283  if (aacDecoder_SetParam(s->handle, AAC_DRC_REFERENCE_LEVEL, s->drc_level) != AAC_DEC_OK) {
284  av_log(avctx, AV_LOG_ERROR, "Unable to set DRC reference level in the decoder\n");
285  return AVERROR_UNKNOWN;
286  }
287  }
288 
289  if (s->drc_heavy != -1) {
290  if (aacDecoder_SetParam(s->handle, AAC_DRC_HEAVY_COMPRESSION, s->drc_heavy) != AAC_DEC_OK) {
291  av_log(avctx, AV_LOG_ERROR, "Unable to set DRC heavy compression in the decoder\n");
292  return AVERROR_UNKNOWN;
293  }
294  }
295 
296 #ifdef AACDECODER_LIB_VL0
297  if (aacDecoder_SetParam(s->handle, AAC_PCM_LIMITER_ENABLE, s->level_limit) != AAC_DEC_OK) {
298  av_log(avctx, AV_LOG_ERROR, "Unable to set in signal level limiting in the decoder\n");
299  return AVERROR_UNKNOWN;
300  }
301 #endif
302 
303  avctx->sample_fmt = AV_SAMPLE_FMT_S16;
304 
307  if (!s->decoder_buffer)
308  return AVERROR(ENOMEM);
309 
310  return 0;
311 }
312 
313 static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data,
314  int *got_frame_ptr, AVPacket *avpkt)
315 {
316  FDKAACDecContext *s = avctx->priv_data;
317  AVFrame *frame = data;
318  int ret;
319  AAC_DECODER_ERROR err;
320  UINT valid = avpkt->size;
321 
322  err = aacDecoder_Fill(s->handle, &avpkt->data, &avpkt->size, &valid);
323  if (err != AAC_DEC_OK) {
324  av_log(avctx, AV_LOG_ERROR, "aacDecoder_Fill() failed: %x\n", err);
325  return AVERROR_INVALIDDATA;
326  }
327 
328  err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) s->decoder_buffer, s->decoder_buffer_size / sizeof(INT_PCM), 0);
329  if (err == AAC_DEC_NOT_ENOUGH_BITS) {
330  ret = avpkt->size - valid;
331  goto end;
332  }
333  if (err != AAC_DEC_OK) {
334  av_log(avctx, AV_LOG_ERROR,
335  "aacDecoder_DecodeFrame() failed: %x\n", err);
336  ret = AVERROR_UNKNOWN;
337  goto end;
338  }
339 
340  if ((ret = get_stream_info(avctx)) < 0)
341  goto end;
342  frame->nb_samples = avctx->frame_size;
343 
344  if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
345  goto end;
346 
347  memcpy(frame->extended_data[0], s->decoder_buffer,
348  avctx->channels * avctx->frame_size *
350 
351  *got_frame_ptr = 1;
352  ret = avpkt->size - valid;
353 
354 end:
355  return ret;
356 }
357 
359 {
360  FDKAACDecContext *s = avctx->priv_data;
361  AAC_DECODER_ERROR err;
362 
363  if (!s->handle)
364  return;
365 
366  if ((err = aacDecoder_SetParam(s->handle,
367  AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK)
368  av_log(avctx, AV_LOG_WARNING, "failed to clear buffer when flushing\n");
369 }
370 
372  .name = "libfdk_aac",
373  .long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"),
374  .type = AVMEDIA_TYPE_AUDIO,
375  .id = AV_CODEC_ID_AAC,
376  .priv_data_size = sizeof(FDKAACDecContext),
379  .close = fdk_aac_decode_close,
382  .priv_class = &fdk_aac_dec_class,
383  .caps_internal = FF_CODEC_CAP_INIT_THREADSAFE |
385 };
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
Definition: internal.h:48
#define NULL
Definition: coverity.c:32
const char * s
Definition: avisynth_c.h:768
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
Definition: error.h:59
#define DECODER_BUFFSIZE
Definition: libfdk-aacdec.c:58
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
AVOption.
Definition: opt.h:246
ptrdiff_t const GLvoid * data
Definition: opengl_enc.c:101
static void flush(AVCodecContext *avctx)
#define AV_LOG_WARNING
Something somehow does not look correct.
Definition: log.h:182
#define LIBAVUTIL_VERSION_INT
Definition: version.h:86
static av_cold int init(AVCodecContext *avctx)
Definition: avrndec.c:35
int size
Definition: avcodec.h:1680
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
Definition: avcodec.h:1061
#define AV_CH_LAYOUT_STEREO
#define DMX_ANC_BUFFSIZE
Definition: libfdk-aacdec.c:56
AVCodec.
Definition: avcodec.h:3739
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
Definition: decode_audio.c:42
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
Definition: internal.h:40
enum AVSampleFormat sample_fmt
audio sample format
Definition: avcodec.h:2531
uint8_t
#define OFFSET(x)
Definition: libfdk-aacdec.c:60
#define av_cold
Definition: attributes.h:82
#define av_malloc(s)
#define AD
Definition: libfdk-aacdec.c:61
AVOptions.
static av_cold int end(AVCodecContext *avctx)
Definition: avrndec.c:90
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
Definition: avcodec.h:1876
#define AV_CH_LOW_FREQUENCY
static AVFrame * frame
uint8_t * data
Definition: avcodec.h:1679
static int get_stream_info(AVCodecContext *avctx)
Definition: libfdk-aacdec.c:85
#define AV_CH_BACK_LEFT
#define av_log(a,...)
HANDLE_AACDECODER handle
Definition: libfdk-aacdec.c:43
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
av_default_item_name
static av_cold void fdk_aac_decode_flush(AVCodecContext *avctx)
#define AVERROR(e)
Definition: error.h:43
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
AVCodec ff_libfdk_aac_decoder
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
Definition: log.h:197
const char * name
Name of the codec implementation.
Definition: avcodec.h:3746
uint64_t channel_layout
Audio channel layout.
Definition: avcodec.h:2574
#define AAC_PCM_MAX_OUTPUT_CHANNELS
Definition: libfdk-aacdec.c:31
uint8_t * decoder_buffer
Definition: libfdk-aacdec.c:44
ConcealMethod
Definition: libfdk-aacdec.c:34
audio channel layout utility functions
#define AV_CH_LAYOUT_STEREO_DOWNMIX
static const AVOption fdk_aac_dec_options[]
Definition: libfdk-aacdec.c:62
#define AV_CH_FRONT_LEFT_OF_CENTER
#define AV_CH_FRONT_CENTER
static const uint8_t channel_counts[7]
Definition: dca_lbr.c:109
#define FF_ARRAY_ELEMS(a)
#define AV_CH_FRONT_RIGHT_OF_CENTER
int frame_size
Number of samples per channel in an audio frame.
Definition: avcodec.h:2543
Libavcodec external API header.
int sample_rate
samples per second
Definition: avcodec.h:2523
static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static const AVClass fdk_aac_dec_class
Definition: libfdk-aacdec.c:81
#define AV_CH_LAYOUT_NATIVE
Channel mask value used for AVCodecContext.request_channel_layout to indicate that the user requests ...
main external API structure.
Definition: avcodec.h:1761
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Definition: decode.c:1669
int extradata_size
Definition: avcodec.h:1877
Describe the class of an AVClass context structure.
Definition: log.h:67
uint8_t * anc_buffer
Definition: libfdk-aacdec.c:46
#define AV_CH_BACK_CENTER
#define AV_CH_SIDE_RIGHT
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
Definition: samplefmt.c:106
common internal api header.
static av_cold int fdk_aac_decode_close(AVCodecContext *avctx)
common internal and external API header
signed 16 bits
Definition: samplefmt.h:61
static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
Definition: error.h:71
void * priv_data
Definition: avcodec.h:1803
int channels
number of audio channels
Definition: avcodec.h:2524
#define DECODER_MAX_CHANNELS
Definition: libfdk-aacdec.c:57
#define av_freep(p)
unsigned int UINT
#define AV_CH_SIDE_LEFT
uint8_t ** extended_data
pointers to the data planes/channels.
Definition: frame.h:248
#define AV_CH_LAYOUT_MONO
uint64_t request_channel_layout
Request decoder to use this channel layout if it can (0 for default)
Definition: avcodec.h:2581
This structure stores compressed data.
Definition: avcodec.h:1656
int nb_samples
number of audio samples (per channel) described by this frame
Definition: frame.h:267
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
Definition: avcodec.h:1002
#define AV_CH_BACK_RIGHT