diff options
| author | Oskar Arvidsson <oskar@irock.se> | 2011-03-29 17:48:59 +0200 |
|---|---|---|
| committer | Ronald S. Bultje <rsbultje@gmail.com> | 2011-05-10 07:24:36 -0400 |
| commit | 19a0729b4cfacfd90b8ee84ab0c093ff7e397e65 (patch) | |
| tree | 63279dbdeba8d3fd96b5c971a224341ec32f7100 /libavcodec/high_bit_depth.h | |
| parent | fcc0224e4fbd44ae268903185b0cf83560b13555 (diff) | |
Adds 8-, 9- and 10-bit versions of some of the functions used by the h264 decoder.
This patch lets e.g. dsputil_init chose dsp functions with respect to
the bit depth to decode. The naming scheme of bit depth dependent
functions is <base name>_<bit depth>[_<prefix>] (i.e. the old
clear_blocks_c is now named clear_blocks_8_c).
Note: Some of the functions for high bit depth is not dependent on the
bit depth, but only on the pixel size. This leaves some room for
optimizing binary size.
Preparatory patch for high bit depth h264 decoding support.
Signed-off-by: Ronald S. Bultje <rsbultje@gmail.com>
Diffstat (limited to 'libavcodec/high_bit_depth.h')
| -rw-r--r-- | libavcodec/high_bit_depth.h | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/libavcodec/high_bit_depth.h b/libavcodec/high_bit_depth.h new file mode 100644 index 0000000000..6f2b6a74f4 --- /dev/null +++ b/libavcodec/high_bit_depth.h @@ -0,0 +1,85 @@ +#include "dsputil.h" + +#ifndef BIT_DEPTH +#define BIT_DEPTH 8 +#endif + +#ifdef AVCODEC_H264_HIGH_DEPTH_H +# undef pixel +# undef pixel2 +# undef pixel4 +# undef dctcoef +# undef INIT_CLIP +# undef no_rnd_avg_pixel4 +# undef rnd_avg_pixel4 +# undef AV_RN2P +# undef AV_RN4P +# undef AV_WN2P +# undef AV_WN4P +# undef AV_WN4PA +# undef CLIP +# undef FUNC +# undef FUNCC +# undef av_clip_pixel +# undef PIXEL_SPLAT_X4 +#else +# define AVCODEC_H264_HIGH_DEPTH_H +# define CLIP_PIXEL(depth)\ + static inline uint16_t av_clip_pixel_ ## depth (int p)\ + {\ + const int pixel_max = (1 << depth)-1;\ + return (p & ~pixel_max) ? (-p)>>31 & pixel_max : p;\ + } + +CLIP_PIXEL( 9) +CLIP_PIXEL(10) +#endif + +#if BIT_DEPTH > 8 +# define pixel uint16_t +# define pixel2 uint32_t +# define pixel4 uint64_t +# define dctcoef int32_t + +# define INIT_CLIP +# define no_rnd_avg_pixel4 no_rnd_avg64 +# define rnd_avg_pixel4 rnd_avg64 +# define AV_RN2P AV_RN32 +# define AV_RN4P AV_RN64 +# define AV_WN2P AV_WN32 +# define AV_WN4P AV_WN64 +# define AV_WN4PA AV_WN64A +# define PIXEL_SPLAT_X4(x) ((x)*0x0001000100010001ULL) +#else +# define pixel uint8_t +# define pixel2 uint16_t +# define pixel4 uint32_t +# define dctcoef int16_t + +# define INIT_CLIP uint8_t *cm = ff_cropTbl + MAX_NEG_CROP; +# define no_rnd_avg_pixel4 no_rnd_avg32 +# define rnd_avg_pixel4 rnd_avg32 +# define AV_RN2P AV_RN16 +# define AV_RN4P AV_RN32 +# define AV_WN2P AV_WN16 +# define AV_WN4P AV_WN32 +# define AV_WN4PA AV_WN32A +# define PIXEL_SPLAT_X4(x) ((x)*0x01010101U) +#endif + +#if BIT_DEPTH == 8 +# define av_clip_pixel(a) av_clip_uint8(a) +# define CLIP(a) cm[a] +# define FUNC(a) a ## _8 +# define FUNCC(a) a ## _8_c +#elif BIT_DEPTH == 9 +# define av_clip_pixel(a) av_clip_pixel_9(a) +# define CLIP(a) av_clip_pixel_9(a) +# define FUNC(a) a ## _9 +# define FUNCC(a) a ## _9_c +#elif BIT_DEPTH == 10 +# define av_clip_pixel(a) av_clip_pixel_10(a) +# define CLIP(a) av_clip_pixel_10(a) +# define FUNC(a) a ## _10 +# define FUNCC(a) a ## _10_c +#endif |