57 s->
state = gsm_create();
66 gsm_option(s->
state, GSM_OPT_WAV49, &one);
78 gsm_destroy(s->
state);
90 int buf_size = avpkt->
size;
93 if (buf_size < avctx->block_align) {
102 samples = (int16_t *)frame->
data[0];
105 if ((ret = gsm_decode(s->
state, buf, samples)) < 0)
120 gsm_destroy(s->
state);
121 s->
state = gsm_create();
123 gsm_option(s->
state, GSM_OPT_WAV49, &one);
126 #if CONFIG_LIBGSM_DECODER
140 #if CONFIG_LIBGSM_MS_DECODER
141 AVCodec ff_libgsm_ms_decoder = {
#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 init(AVCodecContext *avctx)
static int libgsm_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs...
enum AVSampleFormat sample_fmt
audio sample format
#define GSM_MS_BLOCK_SIZE
#define CODEC_CAP_DR1
Codec uses get_buffer() for allocating buffers and supports custom allocators.
static av_cold int libgsm_decode_init(AVCodecContext *avctx)
#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.
static void libgsm_flush(AVCodecContext *avctx)
Libavcodec external API header.
uint64_t channel_layout
Audio channel layout.
audio channel layout utility functions
static void flush(AVCodecContext *avctx)
int frame_size
Number of samples per channel in an audio frame.
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.
static av_cold int libgsm_decode_close(AVCodecContext *avctx)
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
common internal api header.
common internal and external API header
as in Berlin toast format
int channels
number of audio channels
#define AV_CH_LAYOUT_MONO
This structure stores compressed data.
int nb_samples
number of audio samples (per channel) described by this frame