mirror of https://git.ffmpeg.org/ffmpeg.git
avoid an overflow in the 1 horizontal lifting step
Originally committed as revision 10225 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
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9caa1cccb9
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@ -43,7 +43,7 @@ void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){
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asm volatile(
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asm volatile(
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"pcmpeqd %%xmm7, %%xmm7 \n\t"
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"pcmpeqd %%xmm7, %%xmm7 \n\t"
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"psllw $15, %%xmm7 \n\t"
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"psllw $15, %%xmm7 \n\t"
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"psrlw $13, %%xmm7 \n\t"
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"psrlw $14, %%xmm7 \n\t"
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::);
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::);
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for(; i<w_l-15; i+=16){
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for(; i<w_l-15; i+=16){
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asm volatile(
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asm volatile(
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@ -55,14 +55,14 @@ void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){
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"paddw %%xmm5, %%xmm6 \n\t"
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"paddw %%xmm5, %%xmm6 \n\t"
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"movdqa %%xmm2, %%xmm0 \n\t"
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"movdqa %%xmm2, %%xmm0 \n\t"
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"movdqa %%xmm6, %%xmm4 \n\t"
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"movdqa %%xmm6, %%xmm4 \n\t"
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"paddw %%xmm2, %%xmm2 \n\t"
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"psraw $1, %%xmm0 \n\t"
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"paddw %%xmm6, %%xmm6 \n\t"
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"psraw $1, %%xmm4 \n\t"
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"paddw %%xmm0, %%xmm2 \n\t"
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"paddw %%xmm0, %%xmm2 \n\t"
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"paddw %%xmm4, %%xmm6 \n\t"
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"paddw %%xmm4, %%xmm6 \n\t"
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"paddw %%xmm7, %%xmm2 \n\t"
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"paddw %%xmm7, %%xmm2 \n\t"
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"paddw %%xmm7, %%xmm6 \n\t"
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"paddw %%xmm7, %%xmm6 \n\t"
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"psraw $3, %%xmm2 \n\t"
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"psraw $2, %%xmm2 \n\t"
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"psraw $3, %%xmm6 \n\t"
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"psraw $2, %%xmm6 \n\t"
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"movdqa (%0), %%xmm0 \n\t"
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"movdqa (%0), %%xmm0 \n\t"
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"movdqa 16(%0), %%xmm4 \n\t"
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"movdqa 16(%0), %%xmm4 \n\t"
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"psubw %%xmm2, %%xmm0 \n\t"
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"psubw %%xmm2, %%xmm0 \n\t"
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@ -111,7 +111,7 @@ void ff_snow_horizontal_compose97i_sse2(IDWTELEM *b, int width){
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i = 0;
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i = 0;
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asm volatile(
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asm volatile(
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"psllw $1, %%xmm7 \n\t"
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"psllw $2, %%xmm7 \n\t"
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::);
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::);
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for(; i<w_l-15; i+=16){
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for(; i<w_l-15; i+=16){
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asm volatile(
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asm volatile(
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@ -228,7 +228,7 @@ void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){
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asm volatile(
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asm volatile(
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"pcmpeqw %%mm7, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"psllw $15, %%mm7 \n\t"
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"psrlw $13, %%mm7 \n\t"
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"psrlw $14, %%mm7 \n\t"
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::);
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::);
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for(; i<w_l-7; i+=8){
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for(; i<w_l-7; i+=8){
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asm volatile(
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asm volatile(
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@ -238,14 +238,14 @@ void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){
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"paddw 10(%1), %%mm6 \n\t"
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"paddw 10(%1), %%mm6 \n\t"
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"movq %%mm2, %%mm0 \n\t"
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"movq %%mm2, %%mm0 \n\t"
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"movq %%mm6, %%mm4 \n\t"
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"movq %%mm6, %%mm4 \n\t"
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"paddw %%mm2, %%mm2 \n\t"
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"psraw $1, %%mm2 \n\t"
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"paddw %%mm6, %%mm6 \n\t"
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"psraw $1, %%mm6 \n\t"
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"paddw %%mm0, %%mm2 \n\t"
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"paddw %%mm0, %%mm2 \n\t"
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"paddw %%mm4, %%mm6 \n\t"
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"paddw %%mm4, %%mm6 \n\t"
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"paddw %%mm7, %%mm2 \n\t"
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"paddw %%mm7, %%mm2 \n\t"
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"paddw %%mm7, %%mm6 \n\t"
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"paddw %%mm7, %%mm6 \n\t"
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"psraw $3, %%mm2 \n\t"
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"psraw $2, %%mm2 \n\t"
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"psraw $3, %%mm6 \n\t"
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"psraw $2, %%mm6 \n\t"
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"movq (%0), %%mm0 \n\t"
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"movq (%0), %%mm0 \n\t"
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"movq 8(%0), %%mm4 \n\t"
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"movq 8(%0), %%mm4 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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"psubw %%mm2, %%mm0 \n\t"
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@ -288,7 +288,7 @@ void ff_snow_horizontal_compose97i_mmx(IDWTELEM *b, int width){
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i = 1;
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i = 1;
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b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS);
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b[0] = b[0] + (((2 * ref[1] + W_BO) + 4 * b[0]) >> W_BS);
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asm volatile(
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asm volatile(
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"psllw $1, %%mm7 \n\t"
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"psllw $2, %%mm7 \n\t"
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::);
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::);
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for(; i<w_l-7; i+=8){
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for(; i<w_l-7; i+=8){
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asm volatile(
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asm volatile(
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