39 #define BITSTREAM_READER_LE 66 float *aptr, *bptr, *pptr, val, pval;
88 for (i = 0; i < 2; i++) {
96 aptr[j] = M_SQRT1_2*pows[j];
104 memset(&aptr[NELLY_FILL_LEN], 0,
105 (NELLY_BUF_LEN - NELLY_FILL_LEN) *
sizeof(
float));
130 if (!ff_sine_128[127])
140 int *got_frame_ptr,
AVPacket *avpkt)
144 int buf_size = avpkt->
size;
156 buf_size % NELLY_BLOCK_LEN);
172 samples_flt = (
float *)frame->
data[0];
174 for (i=0 ; i<blocks ; i++) {
194 .
name =
"nellymoser",
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
This structure describes decoded (raw) audio or video data.
static unsigned int get_bits(GetBitContext *s, int n)
Read 1-25 bits.
#define AV_LOG_WARNING
Something somehow does not look correct.
static void skip_bits_long(GetBitContext *s, int n)
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)
#define DECLARE_ALIGNED(n, t, v)
const float ff_nelly_dequantization_table[127]
static av_cold int decode_end(AVCodecContext *avctx)
#define NELLY_DETAIL_BITS
const uint16_t ff_nelly_init_table[64]
enum AVSampleFormat sample_fmt
audio sample format
bitstream reader API header.
static int decode_tag(AVCodecContext *avctx, void *data, int *got_frame_ptr, AVPacket *avpkt)
void(* vector_fmul_window)(float *dst, const float *src0, const float *src1, const float *win, int len)
Overlap/add with window function.
#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. ...
int flags
AV_CODEC_FLAG_*.
const char * name
Name of the codec implementation.
uint64_t channel_layout
Audio channel layout.
AVCodec ff_nellymoser_decoder
audio channel layout utility functions
#define AV_CODEC_FLAG_BITEXACT
Use only bitexact stuff (except (I)DCT).
const uint8_t ff_nelly_band_sizes_table[NELLY_BANDS]
static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
#define NELLY_HEADER_BITS
static void nelly_decode_block(NellyMoserDecodeContext *s, const unsigned char block[NELLY_BLOCK_LEN], float audio[NELLY_SAMPLES])
static av_cold int decode_init(AVCodecContext *avctx)
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.
static unsigned int av_lfg_get(AVLFG *c)
Get the next random unsigned 32-bit number using an ALFG.
static int init_get_bits(GetBitContext *s, const uint8_t *buffer, int bit_size)
Initialize GetBitContext.
av_cold void av_lfg_init(AVLFG *c, unsigned int seed)
void(* imdct_half)(struct FFTContext *s, FFTSample *output, const FFTSample *input)
av_cold void avpriv_float_dsp_init(AVFloatDSPContext *fdsp, int bit_exact)
Initialize a float DSP context.
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
float imdct_buf[2][NELLY_BUF_LEN]
common internal api header.
#define AV_CODEC_CAP_PARAM_CHANGE
Codec supports changed parameters at any point.
static av_cold int init(AVCodecParserContext *s)
int channels
number of audio channels
const int16_t ff_nelly_delta_table[32]
static enum AVSampleFormat sample_fmts[]
#define FFSWAP(type, a, b)
void ff_nelly_get_sample_bits(const float *buf, int *bits)
#define AV_CH_LAYOUT_MONO
The 3 alphanumeric copyright notices are md5summed they are from the original implementors.
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.
void ff_init_ff_sine_windows(int index)
initialize the specified entry of ff_sine_windows