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34 #define NUMBER_OF_AUDIO_FRAMES 200
35 #define NAME_BUFF_SIZE 100
44 frame_data[
channels * j] = 10000 * ((j / 10 *
i) % 2);
69 ctx->channel_layout = ch_layout;
95 ctx->request_channel_layout = ch_layout;
96 ctx->channel_layout = ch_layout;
114 int in_offset = 0, out_offset = 0;
118 int in_frame_bytes, out_frame_bytes;
160 if (in_frame_bytes > in_frame->
linesize[0]) {
164 memcpy(raw_in + in_offset, in_frame->
data[0], in_frame_bytes);
165 in_offset += in_frame_bytes;
182 av_log(
NULL,
AV_LOG_INFO,
"Decoder consumed only part of a packet, it is allowed to do so -- need to update this test\n");
201 if (out_frame_bytes > out_frame->
linesize[0]) {
205 memcpy(raw_out + out_offset, out_frame->
data[0], out_frame_bytes);
206 out_offset += out_frame_bytes;
int avcodec_close(AVCodecContext *avctx)
Close a given AVCodecContext and free all the data associated with it (but not the AVCodecContext its...
int frame_size
Number of samples per channel in an audio frame.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
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
uint64_t channel_layout
Audio channel layout.
int av_frame_get_buffer(AVFrame *frame, int align)
Allocate new buffer(s) for audio or video data.
attribute_deprecated int avcodec_encode_audio2(AVCodecContext *avctx, AVPacket *avpkt, const AVFrame *frame, int *got_packet_ptr)
Encode a frame of audio.
int sample_rate
samples per second
attribute_deprecated int avcodec_decode_audio4(AVCodecContext *avctx, AVFrame *frame, int *got_frame_ptr, const AVPacket *avpkt)
Decode the audio frame of size avpkt->size from avpkt->data into frame.
AVCodec * avcodec_find_encoder(enum AVCodecID id)
Find a registered encoder with a matching codec ID.
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
void av_get_channel_layout_string(char *buf, int buf_size, int nb_channels, uint64_t channel_layout)
Return a description of a channel layout.
This structure describes decoded (raw) audio or video data.
#define AVERROR_UNKNOWN
Unknown error, typically from an external library.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int run_test(AVCodec *enc, AVCodec *dec, AVCodecContext *enc_ctx, AVCodecContext *dec_ctx)
#define AV_CH_LAYOUT_STEREO
AVFrame * av_frame_alloc(void)
Allocate an AVFrame and set its fields to default values.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
AVCodecContext * avcodec_alloc_context3(const AVCodec *codec)
Allocate an AVCodecContext and set its fields to default values.
int channels
number of audio channels, only used for audio.
#define AV_CH_LAYOUT_STEREO_DOWNMIX
and forward the result(frame or status change) to the corresponding input. If nothing is possible
int avcodec_open2(AVCodecContext *avctx, const AVCodec *codec, AVDictionary **options)
Initialize the AVCodecContext to use the given AVCodec.
static int close_encoder(AVCodecContext **enc_ctx)
enum AVSampleFormat sample_fmt
audio sample format
int format
format of the frame, -1 if unknown or unset Values correspond to enum AVPixelFormat for video frames,...
AVCodec * avcodec_find_decoder(enum AVCodecID id)
Find a registered decoder with a matching codec ID.
uint64_t channel_layout
Channel layout of the audio data.
#define AV_CH_LAYOUT_5POINT1_BACK
#define AV_LOG_INFO
Standard information.
#define NUMBER_OF_AUDIO_FRAMES
int channels
number of audio channels
int nb_samples
number of audio samples (per channel) described by this frame
#define i(width, name, range_min, range_max)
@ AV_SAMPLE_FMT_S16
signed 16 bits
#define AV_CH_LAYOUT_SURROUND
#define FF_ARRAY_ELEMS(a)
main external API structure.
static int close_decoder(AVCodecContext **dec_ctx)
static int init_encoder(AVCodec *enc, AVCodecContext **enc_ctx, int64_t ch_layout, int sample_rate)
This structure stores compressed data.
static const uint16_t channel_layouts[7]
static int generate_raw_frame(uint16_t *frame_data, int i, int sample_rate, int channels, int frame_size)
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
static int init_decoder(AVCodec *dec, AVCodecContext **dec_ctx, int64_t ch_layout)
static AVCodecContext * dec_ctx
void av_init_packet(AVPacket *pkt)
Initialize optional fields of a packet with default values.