void ff_jpeg_fdct_islow_10(int16_t *data)
void ff_fdct248_islow_10(int16_t *data)
void ff_fdct_ifast(int16_t *data)
int dct_algo
DCT algorithm, see FF_DCT_* below.
void ff_faandct248(int16_t *data)
int bits_per_raw_sample
Bits per sample/pixel of internal libavcodec pixel/sample format.
av_cold void ff_fdctdsp_init(FDCTDSPContext *c, AVCodecContext *avctx)
Macro definitions for various function/variable attributes.
Undefined Behavior In the C some operations are like signed integer dereferencing freed accessing outside allocated Undefined Behavior must not occur in a C it is not safe even if the output of undefined operations is unused The unsafety may seem nit picking but Optimizing compilers have in fact optimized code on the assumption that no undefined Behavior occurs Optimizing code based on wrong assumptions can and has in some cases lead to effects beyond the output of computations The signed integer overflow problem in speed critical code Code which is highly optimized and works with signed integers sometimes has the problem that often the output of the computation does not c
void ff_fdctdsp_init_x86(FDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)
void ff_fdct248_islow_8(int16_t *data)
void(* fdct)(int16_t *block)
void ff_jpeg_fdct_islow_8(int16_t *data)
void ff_faandct(int16_t *data)
Libavcodec external API header.
main external API structure.
void(* fdct248)(int16_t *block)
void ff_fdct_ifast248(int16_t *data)
av_cold void ff_fdctdsp_init_ppc(FDCTDSPContext *c, AVCodecContext *avctx, unsigned high_bit_depth)