mirror of https://git.ffmpeg.org/ffmpeg.git
sse and 3dnow implementations of float->int conversion and mdct windowing.
15% faster vorbis. Originally committed as revision 5975 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Loren Merritt
parent
60ae06e77e
commit
eb4825b5d4
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@ -3753,6 +3753,39 @@ WARPER8_16_SQ(quant_psnr8x8_c, quant_psnr16_c)
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WARPER8_16_SQ(rd8x8_c, rd16_c)
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WARPER8_16_SQ(bit8x8_c, bit16_c)
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static void vector_fmul_c(float *dst, const float *src, int len){
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int i;
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for(i=0; i<len; i++)
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dst[i] *= src[i];
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}
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static void vector_fmul_reverse_c(float *dst, const float *src0, const float *src1, int len){
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int i;
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src1 += len-1;
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for(i=0; i<len; i++)
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dst[i] = src0[i] * src1[-i];
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}
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void ff_vector_fmul_add_add_c(float *dst, const float *src0, const float *src1, const float *src2, int src3, int len, int step){
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int i;
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for(i=0; i<len; i++)
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dst[i*step] = src0[i] * src1[i] + src2[i] + src3;
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}
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void ff_float_to_int16_c(int16_t *dst, const float *src, int len){
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int i;
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for(i=0; i<len; i++) {
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int_fast32_t tmp = ((int32_t*)src)[i];
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if(tmp & 0xf0000){
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tmp = (0x43c0ffff - tmp)>>31;
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// is this faster on some gcc/cpu combinations?
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// if(tmp > 0x43c0ffff) tmp = 0xFFFF;
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// else tmp = 0;
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}
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dst[i] = tmp - 0x8000;
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}
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}
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/* XXX: those functions should be suppressed ASAP when all IDCTs are
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converted */
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static void ff_jref_idct_put(uint8_t *dest, int line_size, DCTELEM *block)
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@ -4096,6 +4129,10 @@ void dsputil_init(DSPContext* c, AVCodecContext *avctx)
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#ifdef CONFIG_VORBIS_DECODER
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c->vorbis_inverse_coupling = vorbis_inverse_coupling;
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#endif
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c->vector_fmul = vector_fmul_c;
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c->vector_fmul_reverse = vector_fmul_reverse_c;
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c->vector_fmul_add_add = ff_vector_fmul_add_add_c;
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c->float_to_int16 = ff_float_to_int16_c;
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c->shrink[0]= ff_img_copy_plane;
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c->shrink[1]= ff_shrink22;
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@ -58,6 +58,10 @@ void ff_h264_idct_dc_add_c(uint8_t *dst, DCTELEM *block, int stride);
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void ff_h264_lowres_idct_add_c(uint8_t *dst, int stride, DCTELEM *block);
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void ff_h264_lowres_idct_put_c(uint8_t *dst, int stride, DCTELEM *block);
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void ff_vector_fmul_add_add_c(float *dst, const float *src0, const float *src1,
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const float *src2, int src3, int blocksize, int step);
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void ff_float_to_int16_c(int16_t *dst, const float *src, int len);
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/* encoding scans */
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extern const uint8_t ff_alternate_horizontal_scan[64];
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extern const uint8_t ff_alternate_vertical_scan[64];
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@ -307,7 +311,17 @@ typedef struct DSPContext {
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void (*h261_loop_filter)(uint8_t *src, int stride);
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/* assume len is a multiple of 4, and arrays are 16-byte aligned */
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void (*vorbis_inverse_coupling)(float *mag, float *ang, int blocksize);
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void (*vector_fmul)(float *dst, const float *src, int len);
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/* assume len is a multiple of 8, and arrays are 16-byte aligned */
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void (*vector_fmul_reverse)(float *dst, const float *src0, const float *src1, int len);
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/* assume len is a multiple of 8, and src arrays are 16-byte aligned */
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void (*vector_fmul_add_add)(float *dst, const float *src0, const float *src1, const float *src2, int src3, int len, int step);
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/* C version: convert floats from the range [384.0,386.0] to ints in [-32768,32767]
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* asm versions: convert floats from [-32768.0,32767.0] without rescaling */
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void (*float_to_int16)(int16_t *dst, const float *src, int len);
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/* (I)DCT */
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void (*fdct)(DCTELEM *block/* align 16*/);
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@ -2772,6 +2772,198 @@ static void vorbis_inverse_coupling_sse(float *mag, float *ang, int blocksize)
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}
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}
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static void vector_fmul_3dnow(float *dst, const float *src, int len){
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long i;
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len >>= 1;
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for(i=0; i<len; i++) {
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asm volatile(
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"movq %0, %%mm0 \n\t"
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"pfmul %1, %%mm0 \n\t"
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"movq %%mm0, %0 \n\t"
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:"+m"(dst[i*2])
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:"m"(src[i*2])
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:"memory"
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);
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}
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asm volatile("femms");
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}
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static void vector_fmul_sse(float *dst, const float *src, int len){
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long i;
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len >>= 2;
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for(i=0; i<len; i++) {
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asm volatile(
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"movaps %0, %%xmm0 \n\t"
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"mulps %1, %%xmm0 \n\t"
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"movaps %%xmm0, %0 \n\t"
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:"+m"(dst[i*4])
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:"m"(src[i*4])
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:"memory"
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);
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}
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}
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static void vector_fmul_reverse_3dnow2(float *dst, const float *src0, const float *src1, int len){
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long i = len*4-16;
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asm volatile(
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"1: \n\t"
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"pswapd 8(%1), %%mm0 \n\t"
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"pswapd (%1), %%mm1 \n\t"
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"pfmul (%3,%0), %%mm0 \n\t"
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"pfmul 8(%3,%0), %%mm1 \n\t"
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"movq %%mm0, (%2,%0) \n\t"
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"movq %%mm1, 8(%2,%0) \n\t"
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"add $16, %1 \n\t"
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"sub $16, %0 \n\t"
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"jge 1b \n\t"
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:"+r"(i), "+r"(src1)
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:"r"(dst), "r"(src0)
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);
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asm volatile("femms");
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}
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static void vector_fmul_reverse_sse2(float *dst, const float *src0, const float *src1, int len){
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long i = len*4-32;
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asm volatile(
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"1: \n\t"
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"pshufd $0x1b, 16(%1), %%xmm0 \n\t"
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"pshufd $0x1b, (%1), %%xmm1 \n\t"
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"mulps (%3,%0), %%xmm0 \n\t"
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"mulps 16(%3,%0), %%xmm1 \n\t"
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"movaps %%xmm0, (%2,%0) \n\t"
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"movaps %%xmm1, 16(%2,%0) \n\t"
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"add $32, %1 \n\t"
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"sub $32, %0 \n\t"
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"jge 1b \n\t"
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:"+r"(i), "+r"(src1)
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:"r"(dst), "r"(src0)
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);
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}
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static void vector_fmul_add_add_3dnow(float *dst, const float *src0, const float *src1,
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const float *src2, int src3, int len, int step){
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long i;
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if(step == 2 && src3 == 0){
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i = (len-4)*4;
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dst += (len-4)*2;
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asm volatile(
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"1: \n\t"
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"movq (%2,%0), %%mm0 \n\t"
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"movq 8(%2,%0), %%mm1 \n\t"
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"pfmul (%3,%0), %%mm0 \n\t"
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"pfmul 8(%3,%0), %%mm1 \n\t"
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"pfadd (%4,%0), %%mm0 \n\t"
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"pfadd 8(%4,%0), %%mm1 \n\t"
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"movd %%mm0, (%1) \n\t"
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"movd %%mm1, 16(%1) \n\t"
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"psrlq $32, %%mm0 \n\t"
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"psrlq $32, %%mm1 \n\t"
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"movd %%mm0, 8(%1) \n\t"
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"movd %%mm1, 24(%1) \n\t"
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"sub $32, %1 \n\t"
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"sub $16, %0 \n\t"
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"jge 1b \n\t"
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:"+r"(i), "+r"(dst)
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:"r"(src0), "r"(src1), "r"(src2)
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:"memory"
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);
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}
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else if(step == 1 && src3 == 0){
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for(i=0; i<len; i+=2){
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asm volatile(
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"movq %1, %%mm0 \n\t"
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"pfmul %2, %%mm0 \n\t"
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"pfadd %3, %%mm0 \n\t"
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"movq %%mm0, %0 \n\t"
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:"=m"(dst[i])
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:"m"(src0[i]), "m"(src1[i]), "m"(src2[i])
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);
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}
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}
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else
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ff_vector_fmul_add_add_c(dst, src0, src1, src2, src3, len, step);
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asm volatile("femms");
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}
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static void vector_fmul_add_add_sse2(float *dst, const float *src0, const float *src1,
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const float *src2, float src3, int len, int step){
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long i;
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if(step == 2 && src3 == 0){
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i = (len-8)*4;
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dst += (len-8)*2;
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asm volatile(
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"1: \n\t"
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"movaps (%2,%0), %%xmm0 \n\t"
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"movaps 16(%2,%0), %%xmm1 \n\t"
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"mulps (%3,%0), %%xmm0 \n\t"
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"mulps 16(%3,%0), %%xmm1 \n\t"
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"addps (%4,%0), %%xmm0 \n\t"
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"addps 16(%4,%0), %%xmm1 \n\t"
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"movd %%xmm0, (%1) \n\t"
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"movd %%xmm1, 32(%1) \n\t"
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"psrldq $4, %%xmm0 \n\t"
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"psrldq $4, %%xmm1 \n\t"
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"movd %%xmm0, 8(%1) \n\t"
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"movd %%xmm1, 40(%1) \n\t"
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"psrldq $4, %%xmm0 \n\t"
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"psrldq $4, %%xmm1 \n\t"
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"movd %%xmm0, 16(%1) \n\t"
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"movd %%xmm1, 48(%1) \n\t"
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"psrldq $4, %%xmm0 \n\t"
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"psrldq $4, %%xmm1 \n\t"
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"movd %%xmm0, 24(%1) \n\t"
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"movd %%xmm1, 56(%1) \n\t"
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"sub $64, %1 \n\t"
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"sub $32, %0 \n\t"
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"jge 1b \n\t"
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:"+r"(i), "+r"(dst)
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:"r"(src0), "r"(src1), "r"(src2)
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:"memory"
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);
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}
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else if(step == 1 && src3 == 0){
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for(i=0; i<len; i+=4){
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asm volatile(
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"movaps %1, %%xmm0 \n\t"
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"mulps %2, %%xmm0 \n\t"
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"addps %3, %%xmm0 \n\t"
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"movaps %%xmm0, %0 \n\t"
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:"=m"(dst[i])
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:"m"(src0[i]), "m"(src1[i]), "m"(src2[i])
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);
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}
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}
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else
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ff_vector_fmul_add_add_c(dst, src0, src1, src2, src3, len, step);
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}
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void float_to_int16_3dnow(int16_t *dst, const float *src, int len){
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// not bit-exact: pf2id uses different rounding than C and SSE
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int i;
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for(i=0; i<len; i+=4) {
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asm volatile(
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"pf2id %1, %%mm0 \n\t"
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"pf2id %2, %%mm1 \n\t"
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"packssdw %%mm1, %%mm0 \n\t"
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"movq %%mm0, %0 \n\t"
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:"=m"(dst[i])
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:"m"(src[i]), "m"(src[i+2])
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);
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}
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asm volatile("femms");
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}
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void float_to_int16_sse(int16_t *dst, const float *src, int len){
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int i;
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for(i=0; i<len; i+=4) {
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asm volatile(
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"cvtps2pi %1, %%mm0 \n\t"
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"cvtps2pi %2, %%mm1 \n\t"
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"packssdw %%mm1, %%mm0 \n\t"
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"movq %%mm0, %0 \n\t"
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:"=m"(dst[i])
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:"m"(src[i]), "m"(src[i+2])
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);
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}
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asm volatile("emms");
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}
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#ifdef CONFIG_SNOW_ENCODER
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extern void ff_snow_horizontal_compose97i_sse2(DWTELEM *b, int width);
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extern void ff_snow_horizontal_compose97i_mmx(DWTELEM *b, int width);
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@ -3199,10 +3391,25 @@ void dsputil_init_mmx(DSPContext* c, AVCodecContext *avctx)
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}
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#endif
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if(mm_flags & MM_SSE)
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c->vorbis_inverse_coupling = vorbis_inverse_coupling_sse;
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else if(mm_flags & MM_3DNOW)
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if(mm_flags & MM_3DNOW){
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c->vorbis_inverse_coupling = vorbis_inverse_coupling_3dnow;
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c->vector_fmul = vector_fmul_3dnow;
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if(!(avctx->flags & CODEC_FLAG_BITEXACT))
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c->float_to_int16 = float_to_int16_3dnow;
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}
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if(mm_flags & MM_3DNOWEXT)
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c->vector_fmul_reverse = vector_fmul_reverse_3dnow2;
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if(mm_flags & MM_SSE){
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c->vorbis_inverse_coupling = vorbis_inverse_coupling_sse;
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c->vector_fmul = vector_fmul_sse;
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c->float_to_int16 = float_to_int16_sse;
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}
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if(mm_flags & MM_SSE2){
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c->vector_fmul_reverse = vector_fmul_reverse_sse2;
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c->vector_fmul_add_add = vector_fmul_add_add_sse2;
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}
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if(mm_flags & MM_3DNOW)
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c->vector_fmul_add_add = vector_fmul_add_add_3dnow; // faster than sse2
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}
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#ifdef CONFIG_ENCODERS
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@ -192,6 +192,11 @@ static void vorbis_free(vorbis_context *vc) {
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av_free(vc->mappings[i].mux);
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}
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av_freep(&vc->mappings);
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if(vc->exp_bias){
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av_freep(&vc->swin);
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av_freep(&vc->lwin);
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}
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}
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// Parse setup header -------------------------------------------------
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@ -888,6 +893,19 @@ static int vorbis_parse_id_hdr(vorbis_context *vc){
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vc->swin=vwin[bl0-6];
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vc->lwin=vwin[bl1-6];
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if(vc->exp_bias){
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int i;
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float *win;
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win = av_malloc(vc->blocksize_0/2 * sizeof(float));
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for(i=0; i<vc->blocksize_0/2; i++)
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win[i] = vc->swin[i] * (1<<15);
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vc->swin = win;
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win = av_malloc(vc->blocksize_1/2 * sizeof(float));
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for(i=0; i<vc->blocksize_1/2; i++)
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win[i] = vc->lwin[i] * (1<<15);
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vc->lwin = win;
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}
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if ((get_bits1(gb)) == 0) {
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av_log(vc->avccontext, AV_LOG_ERROR, " Vorbis id header packet corrupt (framing flag not set). \n");
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return 2;
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@ -931,6 +949,14 @@ static int vorbis_decode_init(AVCodecContext *avccontext) {
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vc->avccontext = avccontext;
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dsputil_init(&vc->dsp, avccontext);
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if(vc->dsp.float_to_int16 == ff_float_to_int16_c) {
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vc->add_bias = 385;
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vc->exp_bias = 0;
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} else {
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vc->add_bias = 0;
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vc->exp_bias = 15<<23;
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}
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if (!headers_len) {
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av_log(avccontext, AV_LOG_ERROR, "Extradata corrupt.\n");
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return -1;
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@ -1472,7 +1498,6 @@ void vorbis_inverse_coupling(float *mag, float *ang, int blocksize)
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}
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// Decode the audio packet using the functions above
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#define BIAS 385
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static int vorbis_parse_audio_packet(vorbis_context *vc) {
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GetBitContext *gb=&vc->gb;
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@ -1490,6 +1515,7 @@ static int vorbis_parse_audio_packet(vorbis_context *vc) {
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uint_fast8_t res_num=0;
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int_fast16_t retlen=0;
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uint_fast16_t saved_start=0;
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float fadd_bias = vc->add_bias;
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if (get_bits1(gb)) {
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av_log(vc->avccontext, AV_LOG_ERROR, "Not a Vorbis I audio packet.\n");
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@ -1576,10 +1602,7 @@ static int vorbis_parse_audio_packet(vorbis_context *vc) {
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for(j=0, ch_floor_ptr=vc->channel_floors;j<vc->audio_channels;++j,ch_floor_ptr+=blocksize/2) {
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ch_res_ptr=vc->channel_residues+res_chan[j]*blocksize/2;
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for(i=0;i<blocksize/2;++i) {
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ch_floor_ptr[i]*=ch_res_ptr[i]; //FPMATH
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}
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vc->dsp.vector_fmul(ch_floor_ptr, ch_res_ptr, blocksize/2);
|
||||
}
|
||||
|
||||
// MDCT, overlap/add, save data for next overlapping FPMATH
|
||||
|
|
@ -1600,59 +1623,54 @@ static int vorbis_parse_audio_packet(vorbis_context *vc) {
|
|||
|
||||
vc->mdct0.fft.imdct_calc(vc->modes[mode_number].blockflag ? &vc->mdct1 : &vc->mdct0, buf, ch_floor_ptr, buf_tmp);
|
||||
|
||||
//FIXME process channels together, to allow faster simd vector_fmul_add_add?
|
||||
if (vc->modes[mode_number].blockflag) {
|
||||
// -- overlap/add
|
||||
if (previous_window) {
|
||||
for(k=j, i=0;i<vc->blocksize_1/2;++i, k+=step) {
|
||||
ret[k]=saved[i]+buf[i]*lwin[i]+BIAS;
|
||||
}
|
||||
vc->dsp.vector_fmul_add_add(ret+j, buf, lwin, saved, vc->add_bias, vc->blocksize_1/2, step);
|
||||
retlen=vc->blocksize_1/2;
|
||||
} else {
|
||||
buf += (vc->blocksize_1-vc->blocksize_0)/4;
|
||||
for(k=j, i=0;i<vc->blocksize_0/2;++i, k+=step) {
|
||||
ret[k]=saved[i]+buf[i]*swin[i]+BIAS;
|
||||
}
|
||||
int len = (vc->blocksize_1-vc->blocksize_0)/4;
|
||||
buf += len;
|
||||
vc->dsp.vector_fmul_add_add(ret+j, buf, swin, saved, vc->add_bias, vc->blocksize_0/2, step);
|
||||
k = vc->blocksize_0/2*step + j;
|
||||
buf += vc->blocksize_0/2;
|
||||
for(i=0;i<(vc->blocksize_1-vc->blocksize_0)/4;++i, k+=step) {
|
||||
ret[k]=buf[i]+BIAS;
|
||||
if(vc->exp_bias){
|
||||
for(i=0; i<len; i++, k+=step)
|
||||
((uint32_t*)ret)[k] = ((uint32_t*)buf)[i] + vc->exp_bias; // ret[k]=buf[i]*(1<<bias)
|
||||
} else {
|
||||
for(i=0; i<len; i++, k+=step)
|
||||
ret[k] = buf[i] + fadd_bias;
|
||||
}
|
||||
buf=vc->buf;
|
||||
retlen=vc->blocksize_0/2+(vc->blocksize_1-vc->blocksize_0)/4;
|
||||
retlen=vc->blocksize_0/2+len;
|
||||
}
|
||||
// -- save
|
||||
if (next_window) {
|
||||
buf += vc->blocksize_1/2;
|
||||
lwin += vc->blocksize_1/2-1;
|
||||
for(i=0;i<vc->blocksize_1/2;++i) {
|
||||
saved[i]=buf[i]*lwin[-i];
|
||||
}
|
||||
vc->dsp.vector_fmul_reverse(saved, buf, lwin, vc->blocksize_1/2);
|
||||
saved_start=0;
|
||||
} else {
|
||||
saved_start=(vc->blocksize_1-vc->blocksize_0)/4;
|
||||
buf += vc->blocksize_1/2;
|
||||
for(i=0;i<saved_start;++i) {
|
||||
saved[i]=buf[i];
|
||||
}
|
||||
swin += vc->blocksize_0/2-1;
|
||||
for(i=0;i<vc->blocksize_0/2;++i) {
|
||||
saved[saved_start+i]=buf[saved_start+i]*swin[-i];
|
||||
}
|
||||
for(i=0; i<saved_start; i++)
|
||||
((uint32_t*)saved)[i] = ((uint32_t*)buf)[i] + vc->exp_bias;
|
||||
vc->dsp.vector_fmul_reverse(saved+saved_start, buf+saved_start, swin, vc->blocksize_0/2);
|
||||
}
|
||||
} else {
|
||||
// --overlap/add
|
||||
for(k=j, i=0;i<saved_start;++i, k+=step) {
|
||||
ret[k]=saved[i]+BIAS;
|
||||
}
|
||||
for(i=0;i<vc->blocksize_0/2;++i, k+=step) {
|
||||
ret[k]=saved[saved_start+i]+buf[i]*swin[i]+BIAS;
|
||||
if(vc->add_bias) {
|
||||
for(k=j, i=0;i<saved_start;++i, k+=step)
|
||||
ret[k] = saved[i] + fadd_bias;
|
||||
} else {
|
||||
for(k=j, i=0;i<saved_start;++i, k+=step)
|
||||
ret[k] = saved[i];
|
||||
}
|
||||
vc->dsp.vector_fmul_add_add(ret+k, buf, swin, saved+saved_start, vc->add_bias, vc->blocksize_0/2, step);
|
||||
retlen=saved_start+vc->blocksize_0/2;
|
||||
// -- save
|
||||
buf += vc->blocksize_0/2;
|
||||
swin += vc->blocksize_0/2-1;
|
||||
for(i=0;i<vc->blocksize_0/2;++i) {
|
||||
saved[i]=buf[i]*swin[-i];
|
||||
}
|
||||
vc->dsp.vector_fmul_reverse(saved, buf, swin, vc->blocksize_0/2);
|
||||
saved_start=0;
|
||||
}
|
||||
}
|
||||
|
|
@ -1695,16 +1713,7 @@ static int vorbis_decode_frame(AVCodecContext *avccontext,
|
|||
|
||||
AV_DEBUG("parsed %d bytes %d bits, returned %d samples (*ch*bits) \n", get_bits_count(gb)/8, get_bits_count(gb)%8, len);
|
||||
|
||||
for(i=0;i<len;++i) {
|
||||
int_fast32_t tmp= ((int32_t*)vc->ret)[i];
|
||||
if(tmp & 0xf0000){
|
||||
// tmp= (0x43c0ffff - tmp)>>31; //ask gcc devs why this is slower
|
||||
if(tmp > 0x43c0ffff) tmp= 0xFFFF;
|
||||
else tmp= 0;
|
||||
}
|
||||
((int16_t*)data)[i]=tmp - 0x8000;
|
||||
}
|
||||
|
||||
vc->dsp.float_to_int16(data, vc->ret, len);
|
||||
*data_size=len*2;
|
||||
|
||||
return buf_size ;
|
||||
|
|
|
|||
|
|
@ -120,6 +120,8 @@ typedef struct vorbis_context_s {
|
|||
float *ret;
|
||||
float *buf;
|
||||
float *buf_tmp;
|
||||
uint_fast32_t add_bias; // for float->int conversion
|
||||
uint_fast32_t exp_bias;
|
||||
} vorbis_context;
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue