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https://github.com/FFmpeg/FFmpeg.git
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sizeof(s->block) isnt 64*6*2 anymore bugfix
mpeg12 decoding optimization Originally committed as revision 364 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -30,6 +30,7 @@ void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size);
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void (*put_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
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void (*add_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
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void (*gmc1)(UINT8 *dst, UINT8 *src, int srcStride, int h, int x16, int y16, int rounder);
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void (*clear_blocks)(DCTELEM *blocks);
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op_pixels_abs_func pix_abs16x16;
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op_pixels_abs_func pix_abs16x16_x2;
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@ -866,6 +867,11 @@ void block_permute(INT16 *block)
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}
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#endif
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void clear_blocks_c(DCTELEM *blocks)
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{
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memset(blocks, 0, sizeof(DCTELEM)*6*64);
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}
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void dsputil_init(void)
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{
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int i, j;
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@ -890,6 +896,7 @@ void dsputil_init(void)
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put_pixels_clamped = put_pixels_clamped_c;
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add_pixels_clamped = add_pixels_clamped_c;
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gmc1= gmc1_c;
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clear_blocks= clear_blocks_c;
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pix_abs16x16 = pix_abs16x16_c;
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pix_abs16x16_x2 = pix_abs16x16_x2_c;
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@ -40,11 +40,13 @@ extern void (*get_pixels)(DCTELEM *block, const UINT8 *pixels, int line_size);
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extern void (*put_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
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extern void (*add_pixels_clamped)(const DCTELEM *block, UINT8 *pixels, int line_size);
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extern void (*gmc1)(UINT8 *dst, UINT8 *src, int srcStride, int h, int x16, int y16, int rounder);
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extern void (*clear_blocks)(DCTELEM *blocks);
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void get_pixels_c(DCTELEM *block, const UINT8 *pixels, int line_size);
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void put_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
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void add_pixels_clamped_c(const DCTELEM *block, UINT8 *pixels, int line_size);
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void clear_blocks_c(DCTELEM *blocks);
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/* add and put pixel (decoding) */
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typedef void (*op_pixels_func)(UINT8 *block, const UINT8 *pixels, int line_size, int h);
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@ -156,6 +156,7 @@ static int h263_decode_frame(AVCodecContext *avctx,
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if (s->mb_y && !s->h263_pred) {
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s->first_gob_line = h263_decode_gob_header(s);
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}
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s->block_index[0]= s->block_wrap[0]*(s->mb_y*2 + 1) - 1;
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s->block_index[1]= s->block_wrap[0]*(s->mb_y*2 + 1);
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s->block_index[2]= s->block_wrap[0]*(s->mb_y*2 + 2) - 1;
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@ -183,28 +184,8 @@ static int h263_decode_frame(AVCodecContext *avctx,
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s->y_dc_scale = 8;
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s->c_dc_scale = 8;
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}
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#ifdef HAVE_MMX
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if (mm_flags & MM_MMX) {
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asm volatile(
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"pxor %%mm7, %%mm7 \n\t"
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"movl $-128*6, %%eax \n\t"
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"1: \n\t"
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"movq %%mm7, (%0, %%eax) \n\t"
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"movq %%mm7, 8(%0, %%eax) \n\t"
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"movq %%mm7, 16(%0, %%eax) \n\t"
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"movq %%mm7, 24(%0, %%eax) \n\t"
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"addl $32, %%eax \n\t"
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" js 1b \n\t"
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: : "r" (((int)s->block)+128*6)
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: "%eax"
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);
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}else{
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memset(s->block, 0, sizeof(s->block));
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}
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#else
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memset(s->block, 0, sizeof(s->block));
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#endif
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clear_blocks(s->block[0]);
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s->mv_dir = MV_DIR_FORWARD;
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s->mv_type = MV_TYPE_16X16;
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if (s->h263_msmpeg4) {
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@ -1025,6 +1025,23 @@ static void sub_pixels_xy2_mmx( DCTELEM *block, const UINT8 *pixels, int line
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} while(--h);
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}
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static void clear_blocks_mmx(DCTELEM *blocks)
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{
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asm volatile(
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"pxor %%mm7, %%mm7 \n\t"
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"movl $-128*6, %%eax \n\t"
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"1: \n\t"
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"movq %%mm7, (%0, %%eax) \n\t"
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"movq %%mm7, 8(%0, %%eax) \n\t"
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"movq %%mm7, 16(%0, %%eax) \n\t"
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"movq %%mm7, 24(%0, %%eax) \n\t"
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"addl $32, %%eax \n\t"
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" js 1b \n\t"
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: : "r" (((int)blocks)+128*6)
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: "%eax"
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);
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}
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static void just_return() { return; }
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void dsputil_init_mmx(void)
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@ -1049,7 +1066,8 @@ void dsputil_init_mmx(void)
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get_pixels = get_pixels_mmx;
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put_pixels_clamped = put_pixels_clamped_mmx;
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add_pixels_clamped = add_pixels_clamped_mmx;
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clear_blocks= clear_blocks_mmx;
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pix_abs16x16 = pix_abs16x16_mmx;
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pix_abs16x16_x2 = pix_abs16x16_x2_mmx;
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pix_abs16x16_y2 = pix_abs16x16_y2_mmx;
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@ -1402,7 +1402,7 @@ static int mpeg_decode_slice(AVCodecContext *avctx,
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}
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for(;;) {
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memset(s->block, 0, sizeof(s->block));
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clear_blocks(s->block[0]);
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ret = mpeg_decode_mb(s, s->block);
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dprintf("ret=%d\n", ret);
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if (ret < 0)
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