29 16512, 8256, 4128, 2064, 1032, 516, 258, 192, 129, 88, 64, 56, 48, 40, 36, 32
46 int buf_size = avpkt->
size;
47 int blocks = 0, total_blocks,
i;
49 int16_t *output_samples;
52 total_blocks = *buf++;
53 if (buf_size < total_blocks * 65 + 1) {
55 total_blocks * 65 + 1, buf_size);
63 output_samples = (int16_t *)frame->
data[0];
65 for (blocks = 0; blocks < total_blocks; blocks++) {
67 code = (code >> 1) | (code << 7);
70 for (i = 0; i < 32; i++) {
71 *output_samples++ = av_clip_int16((scale[0] * (int8_t)*buf++) >> 5);
72 *output_samples++ = av_clip_int16((scale[1] * (int8_t)*buf++) >> 5);
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
ptrdiff_t const GLvoid * data
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
AVCodec ff_bmv_audio_decoder
#define AV_CH_LAYOUT_STEREO
enum AVSampleFormat sample_fmt
audio sample format
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#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.
audio channel layout utility functions
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 int bmv_aud_mults[16]
Libavcodec external API header.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
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 it can consider them to be part of the FIFO and delay acknowledging a status change accordingly Example code
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
common internal api header.
common internal and external API header
static int bmv_aud_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
int channels
number of audio channels
static av_cold int bmv_aud_decode_init(AVCodecContext *avctx)
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() for allocating buffers and supports custom allocators.