mirror of https://git.ffmpeg.org/ffmpeg.git
mpeg2/mpeg4 dequantizer support (c & mmx)
mpeg1 dequantizer optimizations Originally committed as revision 404 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
parent
9dbcbd92e8
commit
9dbf1dddbd
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@ -2669,7 +2669,7 @@ int mpeg4_decode_picture_header(MpegEncContext * s)
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}
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}
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s->dct_unquantize= s->dct_unquantize_mpeg;
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s->dct_unquantize= s->dct_unquantize_mpeg2;
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// FIXME a bunch of grayscale shape things
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}else
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@ -17,7 +17,7 @@
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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* Optimized for ia32 cpus by Nick Kurshev <nickols_k@mail.ru>
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* h263 dequantizer by Michael Niedermayer <michaelni@gmx.at>
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* h263, mpeg1, mpeg2 dequantizer & draw_edges by Michael Niedermayer <michaelni@gmx.at>
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*/
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#include "../dsputil.h"
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@ -194,103 +194,86 @@ asm volatile(
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static void dct_unquantize_mpeg1_mmx(MpegEncContext *s,
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DCTELEM *block, int n, int qscale)
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{
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int i, level, nCoeffs;
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int nCoeffs;
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const UINT16 *quant_matrix;
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if(s->alternate_scan) nCoeffs= 64;
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else nCoeffs= nCoeffs= zigzag_end[ s->block_last_index[n] ];
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if (s->mb_intra) {
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int block0;
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if (n < 4)
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block[0] = block[0] * s->y_dc_scale;
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block0 = block[0] * s->y_dc_scale;
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else
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block[0] = block[0] * s->c_dc_scale;
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/* isnt used anymore (we have a h263 unquantizer since some time)
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if (s->out_format == FMT_H263) {
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i = 1;
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goto unquant_even;
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}*/
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block0 = block[0] * s->c_dc_scale;
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/* XXX: only mpeg1 */
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quant_matrix = s->intra_matrix;
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i=1;
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/* Align on 4 elements boundary */
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while(i&3)
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{
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level = block[i];
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if (level) {
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if (level < 0) level = -level;
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level = (int)(level * qscale * quant_matrix[i]) >> 3;
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level = (level - 1) | 1;
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if (block[i] < 0) level = -level;
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block[i] = level;
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}
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i++;
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}
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__asm __volatile(
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"movd %0, %%mm6\n\t" /* mm6 = qscale | 0 */
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"punpckldq %%mm6, %%mm6\n\t" /* mm6 = qscale | qscale */
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"movq %2, %%mm4\n\t"
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"movq %%mm6, %%mm7\n\t"
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"movq %1, %%mm5\n\t"
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"packssdw %%mm6, %%mm7\n\t" /* mm7 = qscale | qscale | qscale | qscale */
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"pxor %%mm6, %%mm6\n\t"
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::"g"(qscale),"m"(mm_wone),"m"(mm_wabs):"memory");
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for(;i<nCoeffs;i+=4) {
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__asm __volatile(
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"movq %1, %%mm0\n\t"
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"movq %%mm7, %%mm1\n\t"
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"movq %%mm0, %%mm2\n\t"
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"movq %%mm0, %%mm3\n\t"
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"pcmpgtw %%mm6, %%mm2\n\t"
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"pmullw %2, %%mm1\n\t"
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"pandn %%mm4, %%mm2\n\t"
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"por %%mm5, %%mm2\n\t"
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"pmullw %%mm2, %%mm0\n\t" /* mm0 = abs(block[i]). */
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"pcmpeqw %%mm6, %%mm3\n\t"
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"pmullw %%mm0, %%mm1\n\t"
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"psraw $3, %%mm1\n\t"
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"psubw %%mm5, %%mm1\n\t" /* block[i] --; */
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"pandn %%mm4, %%mm3\n\t" /* fake of pcmpneqw : mm0 != 0 then mm1 = -1 */
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"por %%mm5, %%mm1\n\t" /* block[i] |= 1 */
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"pmullw %%mm2, %%mm1\n\t" /* change signs again */
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"pand %%mm3, %%mm1\n\t" /* nullify if was zero */
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"movq %%mm1, %0"
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:"=m"(block[i])
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:"m"(block[i]), "m"(quant_matrix[i])
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:"memory");
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}
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} else {
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i = 0;
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// unquant_even:
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quant_matrix = s->non_intra_matrix;
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/* Align on 4 elements boundary */
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while(i&7)
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{
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level = block[i];
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if (level) {
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if (level < 0) level = -level;
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level = (((level << 1) + 1) * qscale *
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((int) quant_matrix[i])) >> 4;
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level = (level - 1) | 1;
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if(block[i] < 0) level = -level;
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block[i] = level;
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}
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i++;
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}
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"movl %3, %%eax \n\t"
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".balign 16\n\t"
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"1: \n\t"
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"movq (%0, %3), %%mm0 \n\t"
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"movq 8(%0, %3), %%mm1 \n\t"
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"movq (%1, %3), %%mm4 \n\t"
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"movq 8(%1, %3), %%mm5 \n\t"
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"movq (%0, %%eax), %%mm0 \n\t"
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"movq 8(%0, %%eax), %%mm1 \n\t"
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"movq (%1, %%eax), %%mm4 \n\t"
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"movq 8(%1, %%eax), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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"pxor %%mm3, %%mm3 \n\t"
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"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
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"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
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"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
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"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
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"psraw $3, %%mm0 \n\t"
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"psraw $3, %%mm1 \n\t"
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"psubw %%mm7, %%mm0 \n\t"
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"psubw %%mm7, %%mm1 \n\t"
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"por %%mm7, %%mm0 \n\t"
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"por %%mm7, %%mm1 \n\t"
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"movq %%mm4, (%0, %%eax) \n\t"
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"movq %%mm5, 8(%0, %%eax) \n\t"
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"addl $16, %%eax \n\t"
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"js 1b \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "g" (-2*nCoeffs)
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: "%eax", "memory"
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);
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block[0]= block0;
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} else {
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quant_matrix = s->non_intra_matrix;
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"movl %3, %%eax \n\t"
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".balign 16\n\t"
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"1: \n\t"
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"movq (%0, %%eax), %%mm0 \n\t"
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"movq 8(%0, %%eax), %%mm1 \n\t"
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"movq (%1, %%eax), %%mm4 \n\t"
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"movq 8(%1, %%eax), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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@ -309,8 +292,8 @@ asm volatile(
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"pmullw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %3), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %3), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
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"psraw $4, %%mm0 \n\t"
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"psraw $4, %%mm1 \n\t"
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"psubw %%mm7, %%mm0 \n\t"
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@ -323,13 +306,145 @@ asm volatile(
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"movq %%mm4, (%0, %3) \n\t"
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"movq %%mm5, 8(%0, %3) \n\t"
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"movq %%mm4, (%0, %%eax) \n\t"
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"movq %%mm5, 8(%0, %%eax) \n\t"
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"addl $16, %3 \n\t"
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"addl $16, %%eax \n\t"
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"js 1b \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "r" (2*(i-nCoeffs))
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: "memory"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "g" (-2*nCoeffs)
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: "%eax", "memory"
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);
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}
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}
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static void dct_unquantize_mpeg2_mmx(MpegEncContext *s,
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DCTELEM *block, int n, int qscale)
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{
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int nCoeffs;
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const UINT16 *quant_matrix;
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if(s->alternate_scan) nCoeffs= 64;
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else nCoeffs= nCoeffs= zigzag_end[ s->block_last_index[n] ];
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if (s->mb_intra) {
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int block0;
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if (n < 4)
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block0 = block[0] * s->y_dc_scale;
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else
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block0 = block[0] * s->c_dc_scale;
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quant_matrix = s->intra_matrix;
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlw $15, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"movl %3, %%eax \n\t"
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".balign 16\n\t"
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"1: \n\t"
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"movq (%0, %%eax), %%mm0 \n\t"
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"movq 8(%0, %%eax), %%mm1 \n\t"
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"movq (%1, %%eax), %%mm4 \n\t"
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"movq 8(%1, %%eax), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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"pxor %%mm3, %%mm3 \n\t"
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"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
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"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
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"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*q
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"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
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"psraw $3, %%mm0 \n\t"
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"psraw $3, %%mm1 \n\t"
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"movq %%mm4, (%0, %%eax) \n\t"
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"movq %%mm5, 8(%0, %%eax) \n\t"
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"addl $16, %%eax \n\t"
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"js 1b \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "g" (-2*nCoeffs)
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: "%eax", "memory"
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);
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block[0]= block0;
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//Note, we dont do mismatch control for intra as errors cannot accumulate
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} else {
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quant_matrix = s->non_intra_matrix;
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psrlq $48, %%mm7 \n\t"
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"movd %2, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"packssdw %%mm6, %%mm6 \n\t"
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"movl %3, %%eax \n\t"
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".balign 16\n\t"
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"1: \n\t"
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"movq (%0, %%eax), %%mm0 \n\t"
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"movq 8(%0, %%eax), %%mm1 \n\t"
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"movq (%1, %%eax), %%mm4 \n\t"
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"movq 8(%1, %%eax), %%mm5 \n\t"
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"pmullw %%mm6, %%mm4 \n\t" // q=qscale*quant_matrix[i]
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"pmullw %%mm6, %%mm5 \n\t" // q=qscale*quant_matrix[i]
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"pxor %%mm2, %%mm2 \n\t"
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"pxor %%mm3, %%mm3 \n\t"
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"pcmpgtw %%mm0, %%mm2 \n\t" // block[i] < 0 ? -1 : 0
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"pcmpgtw %%mm1, %%mm3 \n\t" // block[i] < 0 ? -1 : 0
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t" // abs(block[i])
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"psubw %%mm3, %%mm1 \n\t" // abs(block[i])
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"paddw %%mm0, %%mm0 \n\t" // abs(block[i])*2
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"paddw %%mm1, %%mm1 \n\t" // abs(block[i])*2
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"pmullw %%mm4, %%mm0 \n\t" // abs(block[i])*2*q
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"pmullw %%mm5, %%mm1 \n\t" // abs(block[i])*2*q
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"paddw %%mm4, %%mm0 \n\t" // (abs(block[i])*2 + 1)*q
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"paddw %%mm5, %%mm1 \n\t" // (abs(block[i])*2 + 1)*q
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"pxor %%mm4, %%mm4 \n\t"
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"pxor %%mm5, %%mm5 \n\t" // FIXME slow
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"pcmpeqw (%0, %%eax), %%mm4 \n\t" // block[i] == 0 ? -1 : 0
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"pcmpeqw 8(%0, %%eax), %%mm5 \n\t" // block[i] == 0 ? -1 : 0
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"psrlw $4, %%mm0 \n\t"
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"psrlw $4, %%mm1 \n\t"
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"pxor %%mm2, %%mm0 \n\t"
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"pxor %%mm3, %%mm1 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm3, %%mm1 \n\t"
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"pandn %%mm0, %%mm4 \n\t"
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"pandn %%mm1, %%mm5 \n\t"
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"pxor %%mm4, %%mm7 \n\t"
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"pxor %%mm5, %%mm7 \n\t"
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"movq %%mm4, (%0, %%eax) \n\t"
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"movq %%mm5, 8(%0, %%eax) \n\t"
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"addl $16, %%eax \n\t"
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"js 1b \n\t"
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"movd 124(%0, %3), %%mm0 \n\t"
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"movq %%mm7, %%mm6 \n\t"
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"psrlq $32, %%mm7 \n\t"
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"pxor %%mm6, %%mm7 \n\t"
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"movq %%mm7, %%mm6 \n\t"
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"psrlq $16, %%mm7 \n\t"
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"pxor %%mm6, %%mm7 \n\t"
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"pslld $31, %%mm7 \n\t"
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"psrlq $15, %%mm7 \n\t"
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"pxor %%mm7, %%mm0 \n\t"
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"movd %%mm0, 124(%0, %3) \n\t"
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::"r" (block+nCoeffs), "r"(quant_matrix+nCoeffs), "g" (qscale), "r" (-2*nCoeffs)
|
||||
: "%eax", "memory"
|
||||
);
|
||||
}
|
||||
}
|
||||
|
|
@ -440,8 +555,9 @@ void unused_var_warning_killer(){
|
|||
void MPV_common_init_mmx(MpegEncContext *s)
|
||||
{
|
||||
if (mm_flags & MM_MMX) {
|
||||
s->dct_unquantize_h263 = dct_unquantize_h263_mmx;
|
||||
s->dct_unquantize_mpeg = dct_unquantize_mpeg1_mmx;
|
||||
s->dct_unquantize_h263 = dct_unquantize_h263_mmx;
|
||||
s->dct_unquantize_mpeg1 = dct_unquantize_mpeg1_mmx;
|
||||
s->dct_unquantize_mpeg2 = dct_unquantize_mpeg2_mmx;
|
||||
|
||||
draw_edges = draw_edges_mmx;
|
||||
|
||||
|
|
|
|||
|
|
@ -16,7 +16,7 @@
|
|||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
||||
*
|
||||
* 4MV & hq encoding stuff by Michael Niedermayer <michaelni@gmx.at>
|
||||
* 4MV & hq & b-frame encoding stuff by Michael Niedermayer <michaelni@gmx.at>
|
||||
*/
|
||||
#include <stdlib.h>
|
||||
#include <stdio.h>
|
||||
|
|
@ -35,6 +35,8 @@ static void rate_control_init(MpegEncContext *s);
|
|||
static int rate_estimate_qscale(MpegEncContext *s);
|
||||
static void dct_unquantize_mpeg1_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
static void dct_unquantize_mpeg2_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
static void dct_unquantize_h263_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
static void draw_edges_c(UINT8 *buf, int wrap, int width, int height, int w);
|
||||
|
|
@ -112,7 +114,8 @@ int MPV_common_init(MpegEncContext *s)
|
|||
UINT8 *pict;
|
||||
|
||||
s->dct_unquantize_h263 = dct_unquantize_h263_c;
|
||||
s->dct_unquantize_mpeg = dct_unquantize_mpeg1_c;
|
||||
s->dct_unquantize_mpeg1 = dct_unquantize_mpeg1_c;
|
||||
s->dct_unquantize_mpeg2 = dct_unquantize_mpeg2_c;
|
||||
|
||||
#ifdef HAVE_MMX
|
||||
MPV_common_init_mmx(s);
|
||||
|
|
@ -121,7 +124,7 @@ int MPV_common_init(MpegEncContext *s)
|
|||
if(s->out_format == FMT_H263)
|
||||
s->dct_unquantize = s->dct_unquantize_h263;
|
||||
else
|
||||
s->dct_unquantize = s->dct_unquantize_mpeg;
|
||||
s->dct_unquantize = s->dct_unquantize_mpeg1;
|
||||
|
||||
s->mb_width = (s->width + 15) / 16;
|
||||
s->mb_height = (s->height + 15) / 16;
|
||||
|
|
@ -1944,6 +1947,69 @@ static void dct_unquantize_mpeg1_c(MpegEncContext *s,
|
|||
}
|
||||
}
|
||||
|
||||
static void dct_unquantize_mpeg2_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale)
|
||||
{
|
||||
int i, level, nCoeffs;
|
||||
const UINT16 *quant_matrix;
|
||||
|
||||
if(s->alternate_scan) nCoeffs= 64;
|
||||
else nCoeffs= s->block_last_index[n]+1;
|
||||
|
||||
if (s->mb_intra) {
|
||||
if (n < 4)
|
||||
block[0] = block[0] * s->y_dc_scale;
|
||||
else
|
||||
block[0] = block[0] * s->c_dc_scale;
|
||||
quant_matrix = s->intra_matrix;
|
||||
for(i=1;i<nCoeffs;i++) {
|
||||
int j= zigzag_direct[i];
|
||||
level = block[j];
|
||||
if (level) {
|
||||
if (level < 0) {
|
||||
level = -level;
|
||||
level = (int)(level * qscale * quant_matrix[j]) >> 3;
|
||||
level = -level;
|
||||
} else {
|
||||
level = (int)(level * qscale * quant_matrix[j]) >> 3;
|
||||
}
|
||||
#ifdef PARANOID
|
||||
if (level < -2048 || level > 2047)
|
||||
fprintf(stderr, "unquant error %d %d\n", i, level);
|
||||
#endif
|
||||
block[j] = level;
|
||||
}
|
||||
}
|
||||
} else {
|
||||
int sum=-1;
|
||||
i = 0;
|
||||
quant_matrix = s->non_intra_matrix;
|
||||
for(;i<nCoeffs;i++) {
|
||||
int j= zigzag_direct[i];
|
||||
level = block[j];
|
||||
if (level) {
|
||||
if (level < 0) {
|
||||
level = -level;
|
||||
level = (((level << 1) + 1) * qscale *
|
||||
((int) (quant_matrix[j]))) >> 4;
|
||||
level = -level;
|
||||
} else {
|
||||
level = (((level << 1) + 1) * qscale *
|
||||
((int) (quant_matrix[j]))) >> 4;
|
||||
}
|
||||
#ifdef PARANOID
|
||||
if (level < -2048 || level > 2047)
|
||||
fprintf(stderr, "unquant error %d %d\n", i, level);
|
||||
#endif
|
||||
block[j] = level;
|
||||
sum+=level;
|
||||
}
|
||||
}
|
||||
block[63]^=sum&1;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
static void dct_unquantize_h263_c(MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale)
|
||||
{
|
||||
|
|
|
|||
|
|
@ -338,7 +338,9 @@ typedef struct MpegEncContext {
|
|||
DCTELEM intra_block[6][64] __align8;
|
||||
DCTELEM inter_block[6][64] __align8;
|
||||
DCTELEM inter4v_block[6][64] __align8;
|
||||
void (*dct_unquantize_mpeg)(struct MpegEncContext *s,
|
||||
void (*dct_unquantize_mpeg1)(struct MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
void (*dct_unquantize_mpeg2)(struct MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
void (*dct_unquantize_h263)(struct MpegEncContext *s,
|
||||
DCTELEM *block, int n, int qscale);
|
||||
|
|
|
|||
Loading…
Reference in New Issue