34 #define BITSTREAM_READER_LE 43 #define MAX_CHANNELS 2 44 #define BINK_BLOCK_MAX_SIZE (MAX_CHANNELS << 11) 97 if (sample_rate > INT_MAX / avctx->
channels)
111 sample_rate_half = (sample_rate + 1LL) / 2;
116 for (i = 0; i < 96; i++) {
162 2, 3, 4, 5, 6, 8, 9, 10, 11, 12, 13, 14, 15, 16, 32, 64
180 for (ch = 0; ch < s->
channels; ch++) {
224 memset(coeffs + i, 0, (j - i) *
sizeof(*coeffs));
226 while (s->
bands[k] < i)
230 if (s->
bands[k] == i)
256 for (ch = 0; ch < s->
channels; ch++) {
262 out[ch][i] = (s->
previous[ch][i] * (count - j) +
263 out[ch][i] * j) / count;
331 memset(gb, 0,
sizeof(*gb));
344 .
name =
"binkaudio_rdft",
356 .
name =
"binkaudio_dct",
av_cold void ff_rdft_end(RDFTContext *s)
const struct AVCodec * codec
static float get_float(GetBitContext *gb)
#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.
static av_cold int decode_end(AVCodecContext *avctx)
static void skip_bits_long(GetBitContext *s, int n)
Skips the specified number of bits.
static av_cold int init(AVCodecContext *avctx)
static av_always_inline float av_int2float(uint32_t i)
Reinterpret a 32-bit integer as a float.
static const uint8_t rle_length_tab[16]
const uint16_t ff_wma_critical_freqs[25]
static CopyRet receive_frame(AVCodecContext *avctx, AVFrame *frame, int *got_frame)
#define AV_CH_LAYOUT_STEREO
#define AV_CODEC_CAP_DELAY
Encoder or decoder requires flushing with NULL input at the end in order to give the complete and cor...
#define av_assert0(cond)
assert() equivalent, that is always enabled.
void av_packet_free(AVPacket **pkt)
Free the packet, if the packet is reference counted, it will be unreferenced first.
enum AVSampleFormat sample_fmt
audio sample format
int ff_decode_get_packet(AVCodecContext *avctx, AVPacket *pkt)
Called by decoders to get the next packet for decoding.
uint8_t * extradata
some codecs need / can use extradata like Huffman tables.
#define DECLARE_ALIGNED(n, t, v)
Declare a variable that is aligned in memory.
static int get_bits_count(const GetBitContext *s)
static int binkaudio_receive_frame(AVCodecContext *avctx, AVFrame *frame)
bitstream reader API header.
float previous[MAX_CHANNELS][BINK_BLOCK_MAX_SIZE/16]
coeffs from previous audio block
static int get_bits_left(GetBitContext *gb)
#define i(width, name, range_min, range_max)
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
#define BINK_BLOCK_MAX_SIZE
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
static void get_bits_align32(GetBitContext *s)
static int decode_block(BinkAudioContext *s, float **out, int use_dct)
Decode Bink Audio block.
const char * name
Name of the codec implementation.
uint64_t channel_layout
Audio channel layout.
audio channel layout utility functions
void(* dct_calc)(struct DCTContext *s, FFTSample *data)
static av_cold int decode_init(AVCodecContext *avctx)
void(* rdft_calc)(struct RDFTContext *s, FFTSample *z)
AVCodec ff_binkaudio_rdft_decoder
int overlap_len
overlap size (samples)
#define CONFIG_BINKAUDIO_DCT_DECODER
Libavcodec external API header.
int sample_rate
samples per second
static int init_get_bits8(GetBitContext *s, const uint8_t *buffer, int byte_size)
Initialize GetBitContext.
AVCodec ff_binkaudio_dct_decoder
main external API structure.
void av_packet_unref(AVPacket *pkt)
Wipe the packet.
int ff_get_buffer(AVCodecContext *avctx, AVFrame *frame, int flags)
Get a buffer for a frame.
static unsigned int get_bits1(GetBitContext *s)
#define CONFIG_BINKAUDIO_RDFT_DECODER
static void skip_bits(GetBitContext *s, int n)
av_cold int ff_dct_init(DCTContext *s, int nbits, enum DCTTransformType inverse)
Set up DCT.
static unsigned int get_bits_long(GetBitContext *s, int n)
Read 0-32 bits.
int frame_len
transform size (samples)
int version_b
Bink version 'b'.
common internal api header.
FFTSample coeffs[BINK_BLOCK_MAX_SIZE]
int channels
number of audio channels
AVPacket * av_packet_alloc(void)
Allocate an AVPacket and set its fields to default values.
static const double coeff[2][5]
av_cold void ff_dct_end(DCTContext *s)
uint8_t ** extended_data
pointers to the data planes/channels.
#define AV_CH_LAYOUT_MONO
av_cold int ff_rdft_init(RDFTContext *s, int nbits, enum RDFTransformType trans)
Set up a real FFT.
This structure stores compressed data.
union BinkAudioContext::@23 trans
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.