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"
29 CONCEAL_METHOD_DEFAULT = -1,
30 CONCEAL_METHOD_SPECTRAL_MUTING = 0,
31 CONCEAL_METHOD_NOISE_SUBSTITUTION = 1,
32 CONCEAL_METHOD_ENERGY_INTERPOLATION = 2,
36 typedef struct FDKAACDecContext {
38 HANDLE_AACDECODER handle;
40 enum ConcealMethod conceal_method;
43 #define OFFSET(x) offsetof(FDKAACDecContext, x)
44 #define AD AV_OPT_FLAG_AUDIO_PARAM | AV_OPT_FLAG_DECODING_PARAM
45 static const AVOption fdk_aac_dec_options[] = {
46 { "conceal", "Error concealment method", OFFSET(conceal_method), AV_OPT_TYPE_INT, { .i64 = CONCEAL_METHOD_DEFAULT }, CONCEAL_METHOD_DEFAULT, CONCEAL_METHOD_NB - 1, AD, "conceal" },
47 { "default", "Default", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_DEFAULT }, INT_MIN, INT_MAX, AD, "conceal" },
48 { "spectral", "Spectral muting", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_SPECTRAL_MUTING }, INT_MIN, INT_MAX, AD, "conceal" },
49 { "noise", "Noise Substitution", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_NOISE_SUBSTITUTION }, INT_MIN, INT_MAX, AD, "conceal" },
50 { "energy", "Energy Interpolation", 0, AV_OPT_TYPE_CONST, { .i64 = CONCEAL_METHOD_ENERGY_INTERPOLATION }, INT_MIN, INT_MAX, AD, "conceal" },
54 static const AVClass fdk_aac_dec_class = {
55 "libfdk-aac decoder", av_default_item_name, fdk_aac_dec_options, LIBAVUTIL_VERSION_INT
58 static int get_stream_info(AVCodecContext *avctx)
60 FDKAACDecContext *s = avctx->priv_data;
61 CStreamInfo *info = aacDecoder_GetStreamInfo(s->handle);
62 int channel_counts[9] = { 0 };
64 uint64_t ch_layout = 0;
67 av_log(avctx, AV_LOG_ERROR, "Unable to get stream info\n");
68 return AVERROR_UNKNOWN;
71 if (info->sampleRate <= 0) {
72 av_log(avctx, AV_LOG_ERROR, "Stream info not initialized\n");
73 return AVERROR_UNKNOWN;
75 avctx->sample_rate = info->sampleRate;
76 avctx->frame_size = info->frameSize;
78 for (i = 0; i < info->numChannels; i++) {
79 AUDIO_CHANNEL_TYPE ctype = info->pChannelType[i];
80 if (ctype <= ACT_NONE || ctype > ACT_TOP) {
81 av_log(avctx, AV_LOG_WARNING, "unknown channel type\n");
84 channel_counts[ctype]++;
86 av_log(avctx, AV_LOG_DEBUG,
87 "%d channels - front:%d side:%d back:%d lfe:%d top:%d\n",
89 channel_counts[ACT_FRONT], channel_counts[ACT_SIDE],
90 channel_counts[ACT_BACK], channel_counts[ACT_LFE],
91 channel_counts[ACT_FRONT_TOP] + channel_counts[ACT_SIDE_TOP] +
92 channel_counts[ACT_BACK_TOP] + channel_counts[ACT_TOP]);
94 switch (channel_counts[ACT_FRONT]) {
96 ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_LEFT_OF_CENTER |
97 AV_CH_FRONT_RIGHT_OF_CENTER;
100 ch_layout |= AV_CH_LAYOUT_STEREO | AV_CH_FRONT_CENTER;
103 ch_layout |= AV_CH_LAYOUT_STEREO;
106 ch_layout |= AV_CH_FRONT_CENTER;
109 av_log(avctx, AV_LOG_WARNING,
110 "unsupported number of front channels: %d\n",
111 channel_counts[ACT_FRONT]);
115 if (channel_counts[ACT_SIDE] > 0) {
116 if (channel_counts[ACT_SIDE] == 2) {
117 ch_layout |= AV_CH_SIDE_LEFT | AV_CH_SIDE_RIGHT;
119 av_log(avctx, AV_LOG_WARNING,
120 "unsupported number of side channels: %d\n",
121 channel_counts[ACT_SIDE]);
125 if (channel_counts[ACT_BACK] > 0) {
126 switch (channel_counts[ACT_BACK]) {
128 ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT | AV_CH_BACK_CENTER;
131 ch_layout |= AV_CH_BACK_LEFT | AV_CH_BACK_RIGHT;
134 ch_layout |= AV_CH_BACK_CENTER;
137 av_log(avctx, AV_LOG_WARNING,
138 "unsupported number of back channels: %d\n",
139 channel_counts[ACT_BACK]);
144 if (channel_counts[ACT_LFE] > 0) {
145 if (channel_counts[ACT_LFE] == 1) {
146 ch_layout |= AV_CH_LOW_FREQUENCY;
148 av_log(avctx, AV_LOG_WARNING,
149 "unsupported number of LFE channels: %d\n",
150 channel_counts[ACT_LFE]);
155 av_get_channel_layout_nb_channels(ch_layout) != info->numChannels) {
156 av_log(avctx, AV_LOG_WARNING, "unsupported channel configuration\n");
160 avctx->channel_layout = 0;
162 avctx->channel_layout = ch_layout;
164 avctx->channels = info->numChannels;
169 static av_cold int fdk_aac_decode_close(AVCodecContext *avctx)
171 FDKAACDecContext *s = avctx->priv_data;
174 aacDecoder_Close(s->handle);
179 static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
181 FDKAACDecContext *s = avctx->priv_data;
182 AAC_DECODER_ERROR err;
184 s->handle = aacDecoder_Open(avctx->extradata_size ? TT_MP4_RAW : TT_MP4_ADTS, 1);
186 av_log(avctx, AV_LOG_ERROR, "Error opening decoder\n");
187 return AVERROR_UNKNOWN;
190 if (avctx->extradata_size) {
191 if ((err = aacDecoder_ConfigRaw(s->handle, &avctx->extradata,
192 &avctx->extradata_size)) != AAC_DEC_OK) {
193 av_log(avctx, AV_LOG_ERROR, "Unable to set extradata\n");
194 return AVERROR_INVALIDDATA;
198 if (s->conceal_method != CONCEAL_METHOD_DEFAULT) {
199 if ((err = aacDecoder_SetParam(s->handle, AAC_CONCEAL_METHOD,
200 s->conceal_method)) != AAC_DEC_OK) {
201 av_log(avctx, AV_LOG_ERROR, "Unable to set error concealment method\n");
202 return AVERROR_UNKNOWN;
206 avctx->sample_fmt = AV_SAMPLE_FMT_S16;
211 static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data,
212 int *got_frame_ptr, AVPacket *avpkt)
214 FDKAACDecContext *s = avctx->priv_data;
215 AVFrame *frame = data;
217 AAC_DECODER_ERROR err;
218 UINT valid = avpkt->size;
219 uint8_t *buf, *tmpptr = NULL;
222 err = aacDecoder_Fill(s->handle, &avpkt->data, &avpkt->size, &valid);
223 if (err != AAC_DEC_OK) {
224 av_log(avctx, AV_LOG_ERROR, "aacDecoder_Fill() failed: %x\n", err);
225 return AVERROR_INVALIDDATA;
228 if (s->initialized) {
229 frame->nb_samples = avctx->frame_size;
230 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
232 buf = frame->extended_data[0];
233 buf_size = avctx->channels * frame->nb_samples *
234 av_get_bytes_per_sample(avctx->sample_fmt);
236 buf_size = 50 * 1024;
237 buf = tmpptr = av_malloc(buf_size);
239 return AVERROR(ENOMEM);
242 err = aacDecoder_DecodeFrame(s->handle, (INT_PCM *) buf, buf_size, 0);
243 if (err == AAC_DEC_NOT_ENOUGH_BITS) {
244 ret = avpkt->size - valid;
247 if (err != AAC_DEC_OK) {
248 av_log(avctx, AV_LOG_ERROR,
249 "aacDecoder_DecodeFrame() failed: %x\n", err);
250 ret = AVERROR_UNKNOWN;
254 if (!s->initialized) {
255 if ((ret = get_stream_info(avctx)) < 0)
258 frame->nb_samples = avctx->frame_size;
262 frame->nb_samples = avctx->frame_size;
263 if ((ret = ff_get_buffer(avctx, frame, 0)) < 0)
265 memcpy(frame->extended_data[0], tmpptr,
266 avctx->channels * avctx->frame_size *
267 av_get_bytes_per_sample(avctx->sample_fmt));
271 ret = avpkt->size - valid;
278 static av_cold void fdk_aac_decode_flush(AVCodecContext *avctx)
280 FDKAACDecContext *s = avctx->priv_data;
281 AAC_DECODER_ERROR err;
286 if ((err = aacDecoder_SetParam(s->handle,
287 AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK)
288 av_log(avctx, AV_LOG_WARNING, "failed to clear buffer when flushing\n");
291 AVCodec ff_libfdk_aac_decoder = {
292 .name = "libfdk_aac",
293 .long_name = NULL_IF_CONFIG_SMALL("Fraunhofer FDK AAC"),
294 .type = AVMEDIA_TYPE_AUDIO,
295 .id = AV_CODEC_ID_AAC,
296 .priv_data_size = sizeof(FDKAACDecContext),
297 .init = fdk_aac_decode_init,
298 .decode = fdk_aac_decode_frame,
299 .close = fdk_aac_decode_close,
300 .flush = fdk_aac_decode_flush,
301 .capabilities = CODEC_CAP_DR1,
302 .priv_class = &fdk_aac_dec_class,