diff options
| -rw-r--r-- | libavcodec/dsputil.h | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/libavcodec/dsputil.h b/libavcodec/dsputil.h index 376e06293f..cb45f6f2e4 100644 --- a/libavcodec/dsputil.h +++ b/libavcodec/dsputil.h @@ -20,6 +20,8 @@ /** * @file dsputil.h * DSP utils. + * note, many functions in here may use MMX which trashes the FPU state, it is + * absolutely necessary to call emms_c() between dsp & float/double code */ #ifndef DSPUTIL_H @@ -147,7 +149,7 @@ typedef struct DSPContext { /* maybe create an array for 16/8 functions */ /** * Halfpel motion compensation with rounding (a+b+1)>>1. - * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] + * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] * @param block destination where the result is stored * @param pixels source * @param line_size number of bytes in a horizontal line of block @@ -157,7 +159,7 @@ typedef struct DSPContext { /** * Halfpel motion compensation with rounding (a+b+1)>>1. - * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] + * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] * @param block destination into which the result is averaged (a+b+1)>>1 * @param pixels source * @param line_size number of bytes in a horizontal line of block @@ -167,7 +169,7 @@ typedef struct DSPContext { /** * Halfpel motion compensation with no rounding (a+b)>>1. - * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] + * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] * @param block destination where the result is stored * @param pixels source * @param line_size number of bytes in a horizontal line of block @@ -177,7 +179,7 @@ typedef struct DSPContext { /** * Halfpel motion compensation with no rounding (a+b)>>1. - * *pixels_tab[ 0->16x16 1->8x8 ][ xhalfpel + 2*yhalfpel ] + * *pixels_tab[ 0->16xH 1->8xH ][ xhalfpel + 2*yhalfpel ] * @param block destination into which the result is averaged (a+b)>>1 * @param pixels source * @param line_size number of bytes in a horizontal line of block |