Start working on a branch where FFmpeg is not copied, patched and carved to be built with automake but instead imported inline and built using its own build system. This is an import of a slightly modified FFmpeg current tree. xine-lib builds, install and run fine with it, but there are of course plenty of things that needs to be fixed before it can even be considered for a 1.2.x series. Work will continue in the next days of course.

CVS patchset: 8397
CVS date: 2006/12/02 01:19:48

1 files changed, 535 insertions, 0 deletions

diff --git a/contrib/ffmpeg/libavcodec/dct-test.c b/contrib/ffmpeg/libavcodec/dct-test.c
new file mode 100644
index 000000000..2c16f47e4
--- /dev/null
+++ b/contrib/ffmpeg/libavcodec/dct-test.c
@@ -0,0 +1,535 @@
+/*
+ * (c) 2001 Fabrice Bellard
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file dct-test.c
+ * DCT test. (c) 2001 Fabrice Bellard.
+ * Started from sample code by Juan J. Sierralta P.
+ */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <sys/time.h>
+#include <unistd.h>
+
+#include "dsputil.h"
+
+#include "simple_idct.h"
+#include "faandct.h"
+
+#ifndef MAX
+#define MAX(a, b)  (((a) > (b)) ? (a) : (b))
+#endif
+
+#undef printf
+
+void *fast_memcpy(void *a, const void *b, size_t c){return memcpy(a,b,c);};
+
+/* reference fdct/idct */
+extern void fdct(DCTELEM *block);
+extern void idct(DCTELEM *block);
+extern void ff_idct_xvid_mmx(DCTELEM *block);
+extern void ff_idct_xvid_mmx2(DCTELEM *block);
+extern void init_fdct();
+
+extern void j_rev_dct(DCTELEM *data);
+extern void ff_mmx_idct(DCTELEM *data);
+extern void ff_mmxext_idct(DCTELEM *data);
+
+extern void odivx_idct_c (short *block);
+
+#define AANSCALE_BITS 12
+static const unsigned short aanscales[64] = {
+    /* precomputed values scaled up by 14 bits */
+    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
+    22725, 31521, 29692, 26722, 22725, 17855, 12299,  6270,
+    21407, 29692, 27969, 25172, 21407, 16819, 11585,  5906,
+    19266, 26722, 25172, 22654, 19266, 15137, 10426,  5315,
+    16384, 22725, 21407, 19266, 16384, 12873,  8867,  4520,
+    12873, 17855, 16819, 15137, 12873, 10114,  6967,  3552,
+    8867, 12299, 11585, 10426,  8867,  6967,  4799,  2446,
+    4520,  6270,  5906,  5315,  4520,  3552,  2446,  1247
+};
+
+uint8_t cropTbl[256 + 2 * MAX_NEG_CROP];
+
+int64_t gettime(void)
+{
+    struct timeval tv;
+    gettimeofday(&tv,NULL);
+    return (int64_t)tv.tv_sec * 1000000 + tv.tv_usec;
+}
+
+#define NB_ITS 20000
+#define NB_ITS_SPEED 50000
+
+static short idct_mmx_perm[64];
+
+static short idct_simple_mmx_perm[64]={
+        0x00, 0x08, 0x04, 0x09, 0x01, 0x0C, 0x05, 0x0D,
+        0x10, 0x18, 0x14, 0x19, 0x11, 0x1C, 0x15, 0x1D,
+        0x20, 0x28, 0x24, 0x29, 0x21, 0x2C, 0x25, 0x2D,
+        0x12, 0x1A, 0x16, 0x1B, 0x13, 0x1E, 0x17, 0x1F,
+        0x02, 0x0A, 0x06, 0x0B, 0x03, 0x0E, 0x07, 0x0F,
+        0x30, 0x38, 0x34, 0x39, 0x31, 0x3C, 0x35, 0x3D,
+        0x22, 0x2A, 0x26, 0x2B, 0x23, 0x2E, 0x27, 0x2F,
+        0x32, 0x3A, 0x36, 0x3B, 0x33, 0x3E, 0x37, 0x3F,
+};
+
+void idct_mmx_init(void)
+{
+    int i;
+
+    /* the mmx/mmxext idct uses a reordered input, so we patch scan tables */
+    for (i = 0; i < 64; i++) {
+        idct_mmx_perm[i] = (i & 0x38) | ((i & 6) >> 1) | ((i & 1) << 2);
+//        idct_simple_mmx_perm[i] = simple_block_permute_op(i);
+    }
+}
+
+static DCTELEM block[64] __attribute__ ((aligned (8)));
+static DCTELEM block1[64] __attribute__ ((aligned (8)));
+static DCTELEM block_org[64] __attribute__ ((aligned (8)));
+
+void dct_error(const char *name, int is_idct,
+               void (*fdct_func)(DCTELEM *block),
+               void (*fdct_ref)(DCTELEM *block), int test)
+{
+    int it, i, scale;
+    int err_inf, v;
+    int64_t err2, ti, ti1, it1;
+    int64_t sysErr[64], sysErrMax=0;
+    int maxout=0;
+    int blockSumErrMax=0, blockSumErr;
+
+    srandom(0);
+
+    err_inf = 0;
+    err2 = 0;
+    for(i=0; i<64; i++) sysErr[i]=0;
+    for(it=0;it<NB_ITS;it++) {
+        for(i=0;i<64;i++)
+            block1[i] = 0;
+        switch(test){
+        case 0:
+            for(i=0;i<64;i++)
+                block1[i] = (random() % 512) -256;
+            if (is_idct){
+                fdct(block1);
+
+                for(i=0;i<64;i++)
+                    block1[i]>>=3;
+            }
+        break;
+        case 1:{
+            int num= (random()%10)+1;
+            for(i=0;i<num;i++)
+                block1[random()%64] = (random() % 512) -256;
+        }break;
+        case 2:
+            block1[0]= (random()%4096)-2048;
+            block1[63]= (block1[0]&1)^1;
+        break;
+        }
+
+#if 0 // simulate mismatch control
+{ int sum=0;
+        for(i=0;i<64;i++)
+           sum+=block1[i];
+
+        if((sum&1)==0) block1[63]^=1;
+}
+#endif
+
+        for(i=0; i<64; i++)
+            block_org[i]= block1[i];
+
+        if (fdct_func == ff_mmx_idct ||
+            fdct_func == j_rev_dct || fdct_func == ff_mmxext_idct) {
+            for(i=0;i<64;i++)
+                block[idct_mmx_perm[i]] = block1[i];
+        } else if(fdct_func == ff_simple_idct_mmx ) {
+            for(i=0;i<64;i++)
+                block[idct_simple_mmx_perm[i]] = block1[i];
+
+        } else {
+            for(i=0; i<64; i++)
+                block[i]= block1[i];
+        }
+#if 0 // simulate mismatch control for tested IDCT but not the ref
+{ int sum=0;
+        for(i=0;i<64;i++)
+           sum+=block[i];
+
+        if((sum&1)==0) block[63]^=1;
+}
+#endif
+
+        fdct_func(block);
+        emms(); /* for ff_mmx_idct */
+
+        if (fdct_func == fdct_ifast
+#ifndef FAAN_POSTSCALE
+            || fdct_func == ff_faandct
+#endif
+            ) {
+            for(i=0; i<64; i++) {
+                scale = 8*(1 << (AANSCALE_BITS + 11)) / aanscales[i];
+                block[i] = (block[i] * scale /*+ (1<<(AANSCALE_BITS-1))*/) >> AANSCALE_BITS;
+            }
+        }
+
+        fdct_ref(block1);
+
+        blockSumErr=0;
+        for(i=0;i<64;i++) {
+            v = abs(block[i] - block1[i]);
+            if (v > err_inf)
+                err_inf = v;
+            err2 += v * v;
+            sysErr[i] += block[i] - block1[i];
+            blockSumErr += v;
+            if( abs(block[i])>maxout) maxout=abs(block[i]);
+        }
+        if(blockSumErrMax < blockSumErr) blockSumErrMax= blockSumErr;
+#if 0 // print different matrix pairs
+        if(blockSumErr){
+            printf("\n");
+            for(i=0; i<64; i++){
+                if((i&7)==0) printf("\n");
+                printf("%4d ", block_org[i]);
+            }
+            for(i=0; i<64; i++){
+                if((i&7)==0) printf("\n");
+                printf("%4d ", block[i] - block1[i]);
+            }
+        }
+#endif
+    }
+    for(i=0; i<64; i++) sysErrMax= MAX(sysErrMax, FFABS(sysErr[i]));
+
+#if 1 // dump systematic errors
+    for(i=0; i<64; i++){
+        if(i%8==0) printf("\n");
+        printf("%5d ", (int)sysErr[i]);
+    }
+    printf("\n");
+#endif
+
+    printf("%s %s: err_inf=%d err2=%0.8f syserr=%0.8f maxout=%d blockSumErr=%d\n",
+           is_idct ? "IDCT" : "DCT",
+           name, err_inf, (double)err2 / NB_ITS / 64.0, (double)sysErrMax / NB_ITS, maxout, blockSumErrMax);
+#if 1 //Speed test
+    /* speed test */
+    for(i=0;i<64;i++)
+        block1[i] = 0;
+    switch(test){
+    case 0:
+        for(i=0;i<64;i++)
+            block1[i] = (random() % 512) -256;
+        if (is_idct){
+            fdct(block1);
+
+            for(i=0;i<64;i++)
+                block1[i]>>=3;
+        }
+    break;
+    case 1:{
+    case 2:
+        block1[0] = (random() % 512) -256;
+        block1[1] = (random() % 512) -256;
+        block1[2] = (random() % 512) -256;
+        block1[3] = (random() % 512) -256;
+    }break;
+    }
+
+    if (fdct_func == ff_mmx_idct ||
+        fdct_func == j_rev_dct || fdct_func == ff_mmxext_idct) {
+        for(i=0;i<64;i++)
+            block[idct_mmx_perm[i]] = block1[i];
+    } else if(fdct_func == ff_simple_idct_mmx ) {
+        for(i=0;i<64;i++)
+            block[idct_simple_mmx_perm[i]] = block1[i];
+    } else {
+        for(i=0; i<64; i++)
+            block[i]= block1[i];
+    }
+
+    ti = gettime();
+    it1 = 0;
+    do {
+        for(it=0;it<NB_ITS_SPEED;it++) {
+            for(i=0; i<64; i++)
+                block[i]= block1[i];
+//            memcpy(block, block1, sizeof(DCTELEM) * 64);
+// dont memcpy especially not fastmemcpy because it does movntq !!!
+            fdct_func(block);
+        }
+        it1 += NB_ITS_SPEED;
+        ti1 = gettime() - ti;
+    } while (ti1 < 1000000);
+    emms();
+
+    printf("%s %s: %0.1f kdct/s\n",
+           is_idct ? "IDCT" : "DCT",
+           name, (double)it1 * 1000.0 / (double)ti1);
+#endif
+}
+
+static uint8_t img_dest[64] __attribute__ ((aligned (8)));
+static uint8_t img_dest1[64] __attribute__ ((aligned (8)));
+
+void idct248_ref(uint8_t *dest, int linesize, int16_t *block)
+{
+    static int init;
+    static double c8[8][8];
+    static double c4[4][4];
+    double block1[64], block2[64], block3[64];
+    double s, sum, v;
+    int i, j, k;
+
+    if (!init) {
+        init = 1;
+
+        for(i=0;i<8;i++) {
+            sum = 0;
+            for(j=0;j<8;j++) {
+                s = (i==0) ? sqrt(1.0/8.0) : sqrt(1.0/4.0);
+                c8[i][j] = s * cos(M_PI * i * (j + 0.5) / 8.0);
+                sum += c8[i][j] * c8[i][j];
+            }
+        }
+
+        for(i=0;i<4;i++) {
+            sum = 0;
+            for(j=0;j<4;j++) {
+                s = (i==0) ? sqrt(1.0/4.0) : sqrt(1.0/2.0);
+                c4[i][j] = s * cos(M_PI * i * (j + 0.5) / 4.0);
+                sum += c4[i][j] * c4[i][j];
+            }
+        }
+    }
+
+    /* butterfly */
+    s = 0.5 * sqrt(2.0);
+    for(i=0;i<4;i++) {
+        for(j=0;j<8;j++) {
+            block1[8*(2*i)+j] = (block[8*(2*i)+j] + block[8*(2*i+1)+j]) * s;
+            block1[8*(2*i+1)+j] = (block[8*(2*i)+j] - block[8*(2*i+1)+j]) * s;
+        }
+    }
+
+    /* idct8 on lines */
+    for(i=0;i<8;i++) {
+        for(j=0;j<8;j++) {
+            sum = 0;
+            for(k=0;k<8;k++)
+                sum += c8[k][j] * block1[8*i+k];
+            block2[8*i+j] = sum;
+        }
+    }
+
+    /* idct4 */
+    for(i=0;i<8;i++) {
+        for(j=0;j<4;j++) {
+            /* top */
+            sum = 0;
+            for(k=0;k<4;k++)
+                sum += c4[k][j] * block2[8*(2*k)+i];
+            block3[8*(2*j)+i] = sum;
+
+            /* bottom */
+            sum = 0;
+            for(k=0;k<4;k++)
+                sum += c4[k][j] * block2[8*(2*k+1)+i];
+            block3[8*(2*j+1)+i] = sum;
+        }
+    }
+
+    /* clamp and store the result */
+    for(i=0;i<8;i++) {
+        for(j=0;j<8;j++) {
+            v = block3[8*i+j];
+            if (v < 0)
+                v = 0;
+            else if (v > 255)
+                v = 255;
+            dest[i * linesize + j] = (int)rint(v);
+        }
+    }
+}
+
+void idct248_error(const char *name,
+                    void (*idct248_put)(uint8_t *dest, int line_size, int16_t *block))
+{
+    int it, i, it1, ti, ti1, err_max, v;
+
+    srandom(0);
+
+    /* just one test to see if code is correct (precision is less
+       important here) */
+    err_max = 0;
+    for(it=0;it<NB_ITS;it++) {
+
+        /* XXX: use forward transform to generate values */
+        for(i=0;i<64;i++)
+            block1[i] = (random() % 256) - 128;
+        block1[0] += 1024;
+
+        for(i=0; i<64; i++)
+            block[i]= block1[i];
+        idct248_ref(img_dest1, 8, block);
+
+        for(i=0; i<64; i++)
+            block[i]= block1[i];
+        idct248_put(img_dest, 8, block);
+
+        for(i=0;i<64;i++) {
+            v = abs((int)img_dest[i] - (int)img_dest1[i]);
+            if (v == 255)
+                printf("%d %d\n", img_dest[i], img_dest1[i]);
+            if (v > err_max)
+                err_max = v;
+        }
+#if 0
+        printf("ref=\n");
+        for(i=0;i<8;i++) {
+            int j;
+            for(j=0;j<8;j++) {
+                printf(" %3d", img_dest1[i*8+j]);
+            }
+            printf("\n");
+        }
+
+        printf("out=\n");
+        for(i=0;i<8;i++) {
+            int j;
+            for(j=0;j<8;j++) {
+                printf(" %3d", img_dest[i*8+j]);
+            }
+            printf("\n");
+        }
+#endif
+    }
+    printf("%s %s: err_inf=%d\n",
+           1 ? "IDCT248" : "DCT248",
+           name, err_max);
+
+    ti = gettime();
+    it1 = 0;
+    do {
+        for(it=0;it<NB_ITS_SPEED;it++) {
+            for(i=0; i<64; i++)
+                block[i]= block1[i];
+//            memcpy(block, block1, sizeof(DCTELEM) * 64);
+// dont memcpy especially not fastmemcpy because it does movntq !!!
+            idct248_put(img_dest, 8, block);
+        }
+        it1 += NB_ITS_SPEED;
+        ti1 = gettime() - ti;
+    } while (ti1 < 1000000);
+    emms();
+
+    printf("%s %s: %0.1f kdct/s\n",
+           1 ? "IDCT248" : "DCT248",
+           name, (double)it1 * 1000.0 / (double)ti1);
+}
+
+void help(void)
+{
+    printf("dct-test [-i] [<test-number>]\n"
+           "test-number 0 -> test with random matrixes\n"
+           "            1 -> test with random sparse matrixes\n"
+           "            2 -> do 3. test from mpeg4 std\n"
+           "-i          test IDCT implementations\n"
+           "-4          test IDCT248 implementations\n");
+    exit(1);
+}
+
+int main(int argc, char **argv)
+{
+    int test_idct = 0, test_248_dct = 0;
+    int c,i;
+    int test=1;
+
+    init_fdct();
+    idct_mmx_init();
+
+    for(i=0;i<256;i++) cropTbl[i + MAX_NEG_CROP] = i;
+    for(i=0;i<MAX_NEG_CROP;i++) {
+        cropTbl[i] = 0;
+        cropTbl[i + MAX_NEG_CROP + 256] = 255;
+    }
+
+    for(;;) {
+        c = getopt(argc, argv, "ih4");
+        if (c == -1)
+            break;
+        switch(c) {
+        case 'i':
+            test_idct = 1;
+            break;
+        case '4':
+            test_248_dct = 1;
+            break;
+        default :
+        case 'h':
+            help();
+            break;
+        }
+    }
+
+    if(optind <argc) test= atoi(argv[optind]);
+
+    printf("ffmpeg DCT/IDCT test\n");
+
+    if (test_248_dct) {
+        idct248_error("SIMPLE-C", simple_idct248_put);
+    } else {
+        if (!test_idct) {
+            dct_error("REF-DBL", 0, fdct, fdct, test); /* only to verify code ! */
+            dct_error("IJG-AAN-INT", 0, fdct_ifast, fdct, test);
+            dct_error("IJG-LLM-INT", 0, ff_jpeg_fdct_islow, fdct, test);
+            dct_error("MMX", 0, ff_fdct_mmx, fdct, test);
+            dct_error("MMX2", 0, ff_fdct_mmx2, fdct, test);
+            dct_error("FAAN", 0, ff_faandct, fdct, test);
+        } else {
+            dct_error("REF-DBL", 1, idct, idct, test);
+            dct_error("INT", 1, j_rev_dct, idct, test);
+            dct_error("LIBMPEG2-MMX", 1, ff_mmx_idct, idct, test);
+            dct_error("LIBMPEG2-MMXEXT", 1, ff_mmxext_idct, idct, test);
+            dct_error("SIMPLE-C", 1, simple_idct, idct, test);
+            dct_error("SIMPLE-MMX", 1, ff_simple_idct_mmx, idct, test);
+            dct_error("XVID-MMX", 1, ff_idct_xvid_mmx, idct, test);
+            dct_error("XVID-MMX2", 1, ff_idct_xvid_mmx2, idct, test);
+            //        dct_error("ODIVX-C", 1, odivx_idct_c, idct);
+            //printf(" test against odivx idct\n");
+            //        dct_error("REF", 1, idct, odivx_idct_c);
+            //        dct_error("INT", 1, j_rev_dct, odivx_idct_c);
+            //        dct_error("MMX", 1, ff_mmx_idct, odivx_idct_c);
+            //        dct_error("MMXEXT", 1, ff_mmxext_idct, odivx_idct_c);
+            //        dct_error("SIMPLE-C", 1, simple_idct, odivx_idct_c);
+            //        dct_error("SIMPLE-MMX", 1, ff_simple_idct_mmx, odivx_idct_c);
+            //        dct_error("ODIVX-C", 1, odivx_idct_c, odivx_idct_c);
+        }
+    }
+    return 0;
+}