72 int buf_size = avpkt->
size;
75 if (buf_size < avctx->block_align) {
110 memset(
s, 0,
sizeof(*
s));
113 #if CONFIG_GSM_DECODER
126 #if CONFIG_GSM_MS_DECODER
static void flush(AVCodecContext *avctx)
AVCodec ff_gsm_ms_decoder
Libavcodec external API header.
static av_cold int init(AVCodecContext *avctx)
audio channel layout utility functions
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static void decode(AVCodecContext *dec_ctx, AVPacket *pkt, AVFrame *frame, FILE *outfile)
bitstream reader API header.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
#define AV_CH_LAYOUT_MONO
#define AV_CODEC_CAP_DR1
Codec uses get_buffer() or get_encode_buffer() for allocating buffers and supports custom allocators.
#define AV_CODEC_CAP_CHANNEL_CONF
Codec should fill in channel configuration and samplerate instead of container.
@ AV_CODEC_ID_GSM
as in Berlin toast format
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
#define AV_LOG_WARNING
Something somehow does not look correct.
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
@ AV_SAMPLE_FMT_S16
signed 16 bits
#define GSM_MS_BLOCK_SIZE
#define MSN_MIN_BLOCK_SIZE
static int gsm_decode_block(AVCodecContext *avctx, int16_t *samples, GetBitContext *gb, int mode)
static void gsm_flush(AVCodecContext *avctx)
static av_cold int gsm_init(AVCodecContext *avctx)
static int gsm_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
common internal API header
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification.
int ff_msgsm_decode_block(AVCodecContext *avctx, int16_t *samples, const uint8_t *buf, int mode)
main external API structure.
enum AVSampleFormat sample_fmt
audio sample format
int sample_rate
samples per second
int channels
number of audio channels
int block_align
number of bytes per packet if constant and known or 0 Used by some WAV based audio codecs.
uint64_t channel_layout
Audio channel layout.
int frame_size
Number of samples per channel in an audio frame.
const char * name
Name of the codec implementation.
This structure describes decoded (raw) audio or video data.
int nb_samples
number of audio samples (per channel) described by this frame
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
This structure stores compressed data.