20 #include <fdk-aac/aacdecoder_lib.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 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 75 {
"drc_boost",
"Dynamic Range Control: boost, where [0] is none and [127] is max boost",
77 {
"drc_cut",
"Dynamic Range Control: attenuation factor, where [0] is none and [127] is max compression",
79 {
"drc_level",
"Dynamic Range Control: reference level, quantized to 0.25dB steps where [0] is 0dB and [127] is -31.75dB, -1 for auto, and -2 for disabled",
81 {
"drc_heavy",
"Dynamic Range Control: heavy compression, where [1] is on (RF mode) and [0] is off",
83 #if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 84 {
"level_limit",
"Signal level limiting",
87 #if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0 88 {
"drc_effect",
"Dynamic Range Control: effect type, where e.g. [0] is none and [6] is general",
104 CStreamInfo *
info = aacDecoder_GetStreamInfo(s->
handle);
107 uint64_t ch_layout = 0;
114 if (info->sampleRate <= 0) {
120 #if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 124 for (i = 0; i < info->numChannels; i++) {
125 AUDIO_CHANNEL_TYPE ctype = info->pChannelType[
i];
126 if (ctype <= ACT_NONE || ctype >=
FF_ARRAY_ELEMS(channel_counts)) {
130 channel_counts[ctype]++;
133 "%d channels - front:%d side:%d back:%d lfe:%d top:%d\n",
135 channel_counts[ACT_FRONT], channel_counts[ACT_SIDE],
136 channel_counts[ACT_BACK], channel_counts[ACT_LFE],
137 channel_counts[ACT_FRONT_TOP] + channel_counts[ACT_SIDE_TOP] +
138 channel_counts[ACT_BACK_TOP] + channel_counts[ACT_TOP]);
140 switch (channel_counts[ACT_FRONT]) {
156 "unsupported number of front channels: %d\n",
157 channel_counts[ACT_FRONT]);
161 if (channel_counts[ACT_SIDE] > 0) {
162 if (channel_counts[ACT_SIDE] == 2) {
166 "unsupported number of side channels: %d\n",
167 channel_counts[ACT_SIDE]);
171 if (channel_counts[ACT_BACK] > 0) {
172 switch (channel_counts[ACT_BACK]) {
184 "unsupported number of back channels: %d\n",
185 channel_counts[ACT_BACK]);
190 if (channel_counts[ACT_LFE] > 0) {
191 if (channel_counts[ACT_LFE] == 1) {
195 "unsupported number of LFE channels: %d\n",
196 channel_counts[ACT_LFE]);
210 avctx->
channels = info->numChannels;
220 aacDecoder_Close(s->
handle);
230 AAC_DECODER_ERROR err;
246 if ((err = aacDecoder_SetParam(s->
handle, AAC_CONCEAL_METHOD,
254 int downmix_channels = -1;
259 downmix_channels = 2;
262 downmix_channels = 1;
269 if (downmix_channels != -1) {
271 downmix_channels) != AAC_DEC_OK) {
280 av_log(avctx,
AV_LOG_ERROR,
"Unable to register downmix ancillary buffer in the decoder\n");
288 if (aacDecoder_SetParam(s->
handle, AAC_DRC_BOOST_FACTOR, s->
drc_boost) != AAC_DEC_OK) {
295 if (aacDecoder_SetParam(s->
handle, AAC_DRC_ATTENUATION_FACTOR, s->
drc_cut) != AAC_DEC_OK) {
308 if (aacDecoder_SetParam(s->
handle, AAC_DRC_REFERENCE_LEVEL, s->
drc_level) != AAC_DEC_OK) {
315 if (aacDecoder_SetParam(s->
handle, AAC_DRC_HEAVY_COMPRESSION, s->
drc_heavy) != AAC_DEC_OK) {
321 #if FDKDEC_VER_AT_LEAST(2, 5) // 2.5.10 323 if (aacDecoder_SetParam(s->
handle, AAC_PCM_LIMITER_ENABLE, s->
level_limit) != AAC_DEC_OK) {
324 av_log(avctx,
AV_LOG_ERROR,
"Unable to set in signal level limiting in the decoder\n");
329 #if FDKDEC_VER_AT_LEAST(3, 0) // 3.0.0 331 if (aacDecoder_SetParam(s->
handle, AAC_UNIDRC_SET_EFFECT, s->
drc_effect) != AAC_DEC_OK) {
349 int *got_frame_ptr,
AVPacket *avpkt)
354 AAC_DECODER_ERROR err;
355 UINT valid = avpkt->
size;
357 err = aacDecoder_Fill(s->
handle, &avpkt->
data, &avpkt->
size, &valid);
358 if (err != AAC_DEC_OK) {
364 if (err == AAC_DEC_NOT_ENOUGH_BITS) {
365 ret = avpkt->
size - valid;
368 if (err != AAC_DEC_OK) {
370 "aacDecoder_DecodeFrame() failed: %x\n", err);
392 ret = avpkt->
size - valid;
401 AAC_DECODER_ERROR err;
406 if ((err = aacDecoder_SetParam(s->
handle,
407 AAC_TPDEC_CLEAR_BUFFER, 1)) != AAC_DEC_OK)
412 .
name =
"libfdk_aac",
422 .priv_class = &fdk_aac_dec_class,
425 .wrapper_name =
"libfdk",
#define FF_CODEC_CAP_INIT_CLEANUP
The codec allows calling the close function for deallocation even if the init function returned a fai...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static void flush(AVCodecContext *avctx)
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
static av_cold int init(AVCodecContext *avctx)
const char * av_default_item_name(void *ptr)
Return the context name.
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
#define FF_ARRAY_ELEMS(a)
#define AV_CH_LAYOUT_STEREO
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
AVRational time_base
This is the fundamental unit of time (in seconds) in terms of which frame timestamps are represented...
int av_get_channel_layout_nb_channels(uint64_t channel_layout)
Return the number of channels in the channel layout.
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
#define FF_CODEC_CAP_INIT_THREADSAFE
The codec does not modify any global variables in the init function, allowing to call the init functi...
enum AVSampleFormat sample_fmt
audio sample format
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define AV_CH_LOW_FREQUENCY
static int get_stream_info(AVCodecContext *avctx)
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
static av_cold void fdk_aac_decode_flush(AVCodecContext *avctx)
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
AVCodec ff_libfdk_aac_decoder
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
const char * name
Name of the codec implementation.
uint64_t channel_layout
Audio channel layout.
#define AAC_PCM_MAX_OUTPUT_CHANNELS
audio channel layout utility functions
#define AV_CH_LAYOUT_STEREO_DOWNMIX
static const AVOption fdk_aac_dec_options[]
these buffered frames must be flushed immediately if a new input produces new the filter must not call request_frame to get more It must just process the frame or queue it The task of requesting more frames is left to the filter s request_frame method or the application If a filter has several the filter must be ready for frames arriving randomly on any input any filter with several inputs will most likely require some kind of queuing mechanism It is perfectly acceptable to have a limited queue and to drop frames when the inputs are too unbalanced request_frame For filters that do not use the this method is called when a frame is wanted on an output For a it should directly call filter_frame on the corresponding output For a if there are queued frames already one of these frames should be pushed If the filter should request a frame on one of its repeatedly until at least one frame has been pushed Return or at least make progress towards producing a frame
#define AV_CH_FRONT_LEFT_OF_CENTER
#define AV_CH_FRONT_CENTER
static const uint8_t channel_counts[7]
#define AV_CH_FRONT_RIGHT_OF_CENTER
int frame_size
Number of samples per channel in an audio frame.
Libavcodec external API header.
int sample_rate
samples per second
static int fdk_aac_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
static const AVClass fdk_aac_dec_class
#define AV_CH_LAYOUT_NATIVE
Channel mask value used for AVCodecContext.request_channel_layout to indicate that the user requests ...
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
#define AV_CH_BACK_CENTER
int av_get_bytes_per_sample(enum AVSampleFormat sample_fmt)
Return number of bytes per sample.
common internal api header.
static av_cold int fdk_aac_decode_close(AVCodecContext *avctx)
common internal and external API header
static av_cold int fdk_aac_decode_init(AVCodecContext *avctx)
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
int channels
number of audio channels
#define DECODER_MAX_CHANNELS
Filter the word “frame” indicates either a video frame or a group of audio as stored in an AVFrame structure Format for each input and each output the list of supported formats For video that means pixel format For audio that means channel sample they are references to shared objects When the negotiation mechanism computes the intersection of the formats supported at each end of a all references to both lists are replaced with a reference to the intersection And when a single format is eventually chosen for a link amongst the remaining all references to the list are updated That means that if a filter requires that its input and output have the same format amongst a supported all it has to do is use a reference to the same list of formats query_formats can leave some formats unset and return AVERROR(EAGAIN) to cause the negotiation mechanism toagain later.That can be used by filters with complex requirements to use the format negotiated on one link to set the formats supported on another.Frame references ownership and permissions
uint8_t ** extended_data
pointers to the data planes/channels.
#define AV_CH_LAYOUT_MONO
uint64_t request_channel_layout
Request decoder to use this channel layout if it can (0 for default)
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators...
#define AV_NOPTS_VALUE
Undefined timestamp value.