47 static const int8_t
fibonacci[16] = { -34, -21, -13, -8, -5, -3, -2, -1,
48 0, 1, 2, 3, 5, 8, 13, 21 };
49 static const int8_t
exponential[16] = { -128, -64, -32, -16, -8, -4, -2, -1,
50 0, 1, 2, 4, 8, 16, 32, 64 };
52 #define MAX_FRAME_SIZE 32768 67 val = av_clip_uint8(val + table[d & 0xF]);
69 val = av_clip_uint8(val + table[d >> 4]);
79 *dst++ = *src++ + 128;
94 int hdr_size = is_compr ? 2 : 0;
109 esc->
fib_acc[1] = avpkt->
data[2+chan_size+1] + 128;
122 memcpy(esc->
data[0], &avpkt->
data[hdr_size], chan_size);
124 memcpy(esc->
data[1], &avpkt->
data[2*hdr_size+chan_size], chan_size);
139 frame->
nb_samples = buf_size * (is_compr + 1);
145 for (ch = 0; ch < avctx->
channels; ch++) {
228 .
name =
"pcm_s8_planar",
const struct AVCodec * codec
void * av_malloc(size_t size)
Allocate a block of size bytes with alignment suitable for all memory accesses (including vectors if ...
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
static const int8_t fibonacci[16]
This structure describes decoded (raw) audio or video data.
av_log(ac->avr, AV_LOG_TRACE, "%d samples - audio_convert: %s to %s (%s)\, len, av_get_sample_fmt_name(ac->in_fmt), av_get_sample_fmt_name(ac->out_fmt), use_generic ? ac->func_descr_generic :ac->func_descr)
void av_freep(void *arg)
Free a memory block which has been allocated with av_malloc(z)() or av_realloc() and set the pointer ...
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
enum AVSampleFormat sample_fmt
audio sample format
static int eightsvx_decode_frame(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
decode a frame
AVCodec ff_eightsvx_fib_decoder
static av_cold int eightsvx_decode_close(AVCodecContext *avctx)
static const int8_t exponential[16]
#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. ...
static void delta_decode(uint8_t *dst, const uint8_t *src, int src_size, uint8_t *state, const int8_t *table)
Delta decode the compressed values in src, and put the resulting decoded samples in dst...
const char * name
Name of the codec implementation.
AVCodec ff_eightsvx_exp_decoder
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
if(ac->has_optimized_func)
Libavcodec external API header.
AVSampleFormat
Audio Sample Formats.
main external API structure.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
AVCodec ff_pcm_s8_planar_decoder
common internal api header.
common internal and external API header
static av_cold int init(AVCodecParserContext *s)
static av_cold int eightsvx_decode_init(AVCodecContext *avctx)
initialize 8svx decoder
int channels
number of audio channels
static void raw_decode(uint8_t *dst, const int8_t *src, int src_size)
static enum AVSampleFormat sample_fmts[]
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.