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https://github.com/FFmpeg/FFmpeg.git
synced 2024-12-23 12:43:46 +02:00
1) Add MMX deinterlace code.
2) "Fix" first and last line deinterlace. I had second-thoughts that this might be some image filtering algorithm that someone cleverer than I created. 3) Add in-place deinterlace functions (only used when src == dst). patch by (Fred <foohoo at shaw dot ca>) Originally committed as revision 1113 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Fred
Michael Niedermayer
parent
2727c35ed7
commit
5981f4e693
@ -22,6 +22,10 @@
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#ifdef USE_FASTMEMCPY
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#include "fastmemcpy.h"
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#endif
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#ifdef HAVE_MMX
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#include "i386/mmx.h"
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#endif
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/* XXX: totally non optimized */
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static void yuv422_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
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@ -762,77 +766,182 @@ int img_convert(AVPicture *dst, int dst_pix_fmt,
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return 0;
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}
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#ifdef HAVE_MMX
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#define DEINT_INPLACE_LINE_LUM \
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movd_m2r(lum_m4[0],mm0);\
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movd_m2r(lum_m3[0],mm1);\
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movd_m2r(lum_m2[0],mm2);\
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movd_m2r(lum_m1[0],mm3);\
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movd_m2r(lum[0],mm4);\
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punpcklbw_r2r(mm7,mm0);\
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movd_r2m(mm2,lum_m4[0]);\
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punpcklbw_r2r(mm7,mm1);\
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punpcklbw_r2r(mm7,mm2);\
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punpcklbw_r2r(mm7,mm3);\
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punpcklbw_r2r(mm7,mm4);\
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paddw_r2r(mm3,mm1);\
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psllw_i2r(1,mm2);\
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paddw_r2r(mm4,mm0);\
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psllw_i2r(2,mm1);\
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paddw_r2r(mm6,mm2);\
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paddw_r2r(mm2,mm1);\
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psubusw_r2r(mm0,mm1);\
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psrlw_i2r(3,mm1);\
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packuswb_r2r(mm7,mm1);\
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movd_r2m(mm1,lum_m2[0]);
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#define DEINT_LINE_LUM \
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movd_m2r(lum_m4[0],mm0);\
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movd_m2r(lum_m3[0],mm1);\
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movd_m2r(lum_m2[0],mm2);\
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movd_m2r(lum_m1[0],mm3);\
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movd_m2r(lum[0],mm4);\
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punpcklbw_r2r(mm7,mm0);\
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punpcklbw_r2r(mm7,mm1);\
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punpcklbw_r2r(mm7,mm2);\
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punpcklbw_r2r(mm7,mm3);\
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punpcklbw_r2r(mm7,mm4);\
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paddw_r2r(mm3,mm1);\
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psllw_i2r(1,mm2);\
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paddw_r2r(mm4,mm0);\
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psllw_i2r(2,mm1);\
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paddw_r2r(mm6,mm2);\
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paddw_r2r(mm2,mm1);\
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psubusw_r2r(mm0,mm1);\
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psrlw_i2r(3,mm1);\
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packuswb_r2r(mm7,mm1);\
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movd_r2m(mm1,dst[0]);
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#endif
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/* filter parameters: [-1 4 2 4 -1] // 8 */
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static void deinterlace_line(UINT8 *dst, UINT8 *src, int src_wrap,
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int size)
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static void deinterlace_line(UINT8 *dst, UINT8 *lum_m4, UINT8 *lum_m3, UINT8 *lum_m2, UINT8 *lum_m1, UINT8 *lum,
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int size)
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{
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#ifndef HAVE_MMX
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UINT8 *cm = cropTbl + MAX_NEG_CROP;
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int sum;
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UINT8 *s;
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for(;size > 0;size--) {
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s = src;
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sum = -s[0];
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s += src_wrap;
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sum += s[0] << 2;
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s += src_wrap;
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sum += s[0] << 1;
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s += src_wrap;
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sum += s[0] << 2;
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s += src_wrap;
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sum += -s[0];
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sum = -lum_m4[0];
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sum += lum_m3[0] << 2;
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sum += lum_m2[0] << 1;
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sum += lum_m1[0] << 2;
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sum += -lum[0];
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dst[0] = cm[(sum + 4) >> 3];
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lum_m4++;
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lum_m3++;
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lum_m2++;
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lum_m1++;
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lum++;
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dst++;
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src++;
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}
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#else
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for (;size > 3; size-=4) {
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DEINT_LINE_LUM
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lum_m4+=4;
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lum_m3+=4;
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lum_m2+=4;
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lum_m1+=4;
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lum+=4;
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dst+=4;
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}
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#endif
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}
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static void deinterlace_line_inplace(UINT8 *lum_m4, UINT8 *lum_m3, UINT8 *lum_m2, UINT8 *lum_m1, UINT8 *lum,
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int size)
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{
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#ifndef HAVE_MMX
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UINT8 *cm = cropTbl + MAX_NEG_CROP;
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int sum;
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for(;size > 0;size--) {
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sum = -lum_m4[0];
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sum += lum_m3[0] << 2;
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sum += lum_m2[0] << 1;
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lum_m4[0]=lum_m2[0];
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sum += lum_m1[0] << 2;
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sum += -lum[0];
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lum_m2[0] = cm[(sum + 4) >> 3];
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lum_m4++;
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lum_m3++;
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lum_m2++;
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lum_m1++;
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lum++;
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}
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#else
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for (;size > 3; size-=4) {
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DEINT_INPLACE_LINE_LUM
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lum_m4+=4;
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lum_m3+=4;
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lum_m2+=4;
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lum_m1+=4;
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lum+=4;
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}
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#endif
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}
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/* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The
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top field is copied as is, but the bottom field is deinterlaced
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against the top field. */
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static void deinterlace_bottom_field(UINT8 *dst, int dst_wrap,
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UINT8 *src1, int src_wrap,
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UINT8 *src1, int src_wrap,
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int width, int height)
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{
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UINT8 *src_m2, *src_m1, *src_0, *src_p1, *src_p2;
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int y;
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src_m2 = src1;
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src_m1 = src1;
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src_0=&src_m1[src_wrap];
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src_p1=&src_0[src_wrap];
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src_p2=&src_p1[src_wrap];
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for(y=0;y<(height-2);y+=2) {
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memcpy(dst,src_m1,width);
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dst += dst_wrap;
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deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width);
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src_m2 = src_0;
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src_m1 = src_p1;
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src_0 = src_p2;
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src_p1 += 2*src_wrap;
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src_p2 += 2*src_wrap;
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dst += dst_wrap;
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}
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memcpy(dst,src_m1,width);
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dst += dst_wrap;
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/* do last line */
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deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width);
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}
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static void deinterlace_bottom_field_inplace(UINT8 *src1, int src_wrap,
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int width, int height)
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{
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UINT8 *src, *ptr;
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int y, y1, i;
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UINT8 *src_m1, *src_0, *src_p1, *src_p2;
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int y;
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UINT8 *buf;
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buf = (UINT8*)av_malloc(width);
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buf = (UINT8*)av_malloc(5 * width);
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src = src1;
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for(y=0;y<height;y+=2) {
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/* copy top field line */
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memcpy(dst, src, width);
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dst += dst_wrap;
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src += (1 - 2) * src_wrap;
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y1 = y - 2;
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if (y1 >= 0 && (y1 + 4) < height) {
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/* fast case : no edges */
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deinterlace_line(dst, src, src_wrap, width);
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} else {
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/* in order to use the same function, we use an intermediate buffer */
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ptr = buf;
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for(i=0;i<5;i++) {
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if (y1 < 0)
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memcpy(ptr, src1, width);
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else if (y1 >= height)
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memcpy(ptr, src1 + (height - 1) * src_wrap, width);
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else
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memcpy(ptr, src1 + y1 * src_wrap, width);
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y1++;
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ptr += width;
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}
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deinterlace_line(dst, buf, width, width);
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}
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dst += dst_wrap;
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src += (2 + 1) * src_wrap;
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src_m1 = src1;
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memcpy(buf,src_m1,width);
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src_0=&src_m1[src_wrap];
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src_p1=&src_0[src_wrap];
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src_p2=&src_p1[src_wrap];
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for(y=0;y<(height-2);y+=2) {
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deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width);
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src_m1 = src_p1;
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src_0 = src_p2;
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src_p1 += 2*src_wrap;
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src_p2 += 2*src_wrap;
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}
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/* do last line */
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deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width);
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av_free(buf);
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}
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/* deinterlace, return -1 if format not handled */
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/* deinterlace - if not supported return -1 */
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int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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int pix_fmt, int width, int height)
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{
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@ -842,9 +951,22 @@ int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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pix_fmt != PIX_FMT_YUV422P &&
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pix_fmt != PIX_FMT_YUV444P)
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return -1;
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if ((width & 1) != 0 || (height & 3) != 0)
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if ((width & 3) != 0 || (height & 3) != 0)
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return -1;
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#ifdef HAVE_MMX
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{
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mmx_t rounder;
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rounder.uw[0]=4;
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rounder.uw[1]=4;
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rounder.uw[2]=4;
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rounder.uw[3]=4;
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pxor_r2r(mm7,mm7);
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movq_m2r(rounder,mm6);
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}
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#endif
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for(i=0;i<3;i++) {
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if (i == 1) {
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switch(pix_fmt) {
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@ -859,10 +981,18 @@ int avpicture_deinterlace(AVPicture *dst, AVPicture *src,
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break;
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}
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}
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deinterlace_bottom_field(dst->data[i], dst->linesize[i],
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src->data[i], src->linesize[i],
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if (src == dst) {
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deinterlace_bottom_field_inplace(src->data[i], src->linesize[i],
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width, height);
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} else {
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deinterlace_bottom_field(dst->data[i],dst->linesize[i],
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src->data[i], src->linesize[i],
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width, height);
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}
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}
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#ifdef HAVE_MMX
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emms();
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#endif
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return 0;
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}
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