22 #include <codec2/codec2.h> 60 c2->
codec = codec2_create(mode);
64 goto libcodec2_init_common_error;
73 codec2_destroy(c2->
codec);
75 goto libcodec2_init_common_error;
78 codec2_set_natural_or_gray(c2->
codec, 1);
82 libcodec2_init_common_error:
84 "Mode %i (%s) not supported with the linked version of libcodec2\n",
132 codec2_destroy(c2->
codec);
154 output = (int16_t *)frame->
data[0];
156 for (i = 0; i < nframes; i++) {
157 codec2_decode(c2->
codec, output, input);
162 *got_frame_ptr = nframes > 0;
177 codec2_encode(c2->
codec, avpkt->
data, samples);
193 .supported_samplerates = (
const int[]){ 8000, 0 },
209 .supported_samplerates = (
const int[]){ 8000, 0 },
#define CODEC2_AVOPTIONS(desc, classname, min_val, default_val, option_flags)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
static av_cold int libcodec2_init_common(AVCodecContext *avctx, int mode)
static int libcodec2_encode(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
#define LIBAVUTIL_VERSION_INT
static av_cold int init(AVCodecContext *avctx)
#define AV_OPT_FLAG_AUDIO_PARAM
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.
void * av_mallocz(size_t size)
Allocate a memory block with alignment suitable for all memory accesses (including vectors if availab...
static const AVClass libcodec2_dec_class
static int libcodec2_decode(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *pkt)
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
AVCodec ff_libcodec2_decoder
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
int ff_alloc_packet2(AVCodecContext *avctx, AVPacket *avpkt, int64_t size, int64_t min_size)
Check AVPacket size and/or allocate data.
enum AVSampleFormat sample_fmt
audio sample format
static void codec2_make_extradata(uint8_t *ptr, int mode)
filter_frame For filters that do not use the this method is called when a frame is pushed to the filter s input It can be called at any time except in a reentrant way If the input frame is enough to produce output
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
static av_cold int libcodec2_init_decoder(AVCodecContext *avctx)
#define AV_OPT_FLAG_ENCODING_PARAM
a generic parameter which can be set by the user for muxing or encoding
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVCodec ff_libcodec2_encoder
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
const char * name
Name of the codec implementation.
uint64_t channel_layout
Audio channel layout.
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
static const AVOption options[]
int frame_size
Number of samples per channel in an audio frame.
Libavcodec external API header.
AVSampleFormat
Audio sample formats.
static uint8_t codec2_mode_from_extradata(uint8_t *ptr)
int sample_rate
samples per second
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.
static av_cold int libcodec2_close(AVCodecContext *avctx)
and forward the test the status of outputs and forward it to the corresponding return FFERROR_NOT_READY If the filters stores internally one or a few frame for some input
static av_cold int libcodec2_init_encoder(AVCodecContext *avctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
static const AVClass libcodec2_enc_class
#define AV_INPUT_BUFFER_PADDING_SIZE
Required number of additionally allocated bytes at the end of the input bitstream for decoding...
int channels
number of audio channels
#define CODEC2_EXTRADATA_SIZE
Filter the word “frame” indicates either a video frame or a group of audio samples
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
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
mode
Use these values in ebur128_init (or'ed).
int nb_samples
number of audio samples (per channel) described by this frame