ffmpeg roll of source to mar 9 version...

patched-ffmpeg-mt/libswscale/swscale-example.c

Index: patched-ffmpeg-mt/libswscale/swscale-example.c
===================================================================
--- patched-ffmpeg-mt/libswscale/swscale-example.c	(revision 41250)
+++ patched-ffmpeg-mt/libswscale/swscale-example.c	(working copy)
@@ -1,260 +0,0 @@
-/*
- * Copyright (C) 2003 Michael Niedermayer <michaelni@gmx.at>
- *
- * 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
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <inttypes.h>
-#include <stdarg.h>
-
-#undef HAVE_AV_CONFIG_H
-#include "libavutil/mem.h"
-#include "libavutil/avutil.h"
-#include "libavutil/lfg.h"
-#include "swscale.h"
-
-/* HACK Duplicated from swscale_internal.h.
- * Should be removed when a cleaner pixel format system exists. */
-const char *sws_format_name(enum PixelFormat format);
-#define isGray(x)       (           \
-           (x)==PIX_FMT_GRAY8       \
-        || (x)==PIX_FMT_GRAY16BE    \
-        || (x)==PIX_FMT_GRAY16LE    \
-    )
-#define hasChroma(x)   (!(          \
-            isGray(x)               \
-        || (x)==PIX_FMT_MONOBLACK   \
-        || (x)==PIX_FMT_MONOWHITE   \
-    ))
-#define isALPHA(x)      (           \
-           (x)==PIX_FMT_BGR32       \
-        || (x)==PIX_FMT_BGR32_1     \
-        || (x)==PIX_FMT_RGB32       \
-        || (x)==PIX_FMT_RGB32_1     \
-        || (x)==PIX_FMT_YUVA420P    \
-    )
-
-static uint64_t getSSD(uint8_t *src1, uint8_t *src2, int stride1, int stride2, int w, int h)
-{
-    int x,y;
-    uint64_t ssd=0;
-
-//printf("%d %d\n", w, h);
-
-    for (y=0; y<h; y++) {
-        for (x=0; x<w; x++) {
-            int d= src1[x + y*stride1] - src2[x + y*stride2];
-            ssd+= d*d;
-//printf("%d", abs(src1[x + y*stride1] - src2[x + y*stride2])/26 );
-        }
-//printf("\n");
-    }
-    return ssd;
-}
-
-// test by ref -> src -> dst -> out & compare out against ref
-// ref & out are YV12
-static int doTest(uint8_t *ref[4], int refStride[4], int w, int h,
-                  enum PixelFormat srcFormat, enum PixelFormat dstFormat,
-                  int srcW, int srcH, int dstW, int dstH, int flags)
-{
-    uint8_t *src[4] = {0};
-    uint8_t *dst[4] = {0};
-    uint8_t *out[4] = {0};
-    int srcStride[4], dstStride[4];
-    int i;
-    uint64_t ssdY, ssdU=0, ssdV=0, ssdA=0;
-    struct SwsContext *srcContext = NULL, *dstContext = NULL,
-                      *outContext = NULL;
-    int res;
-
-    res = 0;
-    for (i=0; i<4; i++) {
-        // avoid stride % bpp != 0
-        if (srcFormat==PIX_FMT_RGB24 || srcFormat==PIX_FMT_BGR24)
-            srcStride[i]= srcW*3;
-        else if (srcFormat==PIX_FMT_RGB48BE || srcFormat==PIX_FMT_RGB48LE)
-            srcStride[i]= srcW*6;
-        else
-            srcStride[i]= srcW*4;
-
-        if (dstFormat==PIX_FMT_RGB24 || dstFormat==PIX_FMT_BGR24)
-            dstStride[i]= dstW*3;
-        else if (dstFormat==PIX_FMT_RGB48BE || dstFormat==PIX_FMT_RGB48LE)
-            dstStride[i]= dstW*6;
-        else
-            dstStride[i]= dstW*4;
-
-        /* Image buffers passed into libswscale can be allocated any way you
-         * prefer, as long as they're aligned enough for the architecture, and
-         * they're freed appropriately (such as using av_free for buffers
-         * allocated with av_malloc). */
-        src[i]= av_malloc(srcStride[i]*srcH);
-        dst[i]= av_malloc(dstStride[i]*dstH);
-        out[i]= av_malloc(refStride[i]*h);
-        if (!src[i] || !dst[i] || !out[i]) {
-            perror("Malloc");
-            res = -1;
-
-            goto end;
-        }
-    }
-
-    srcContext= sws_getContext(w, h, PIX_FMT_YUVA420P, srcW, srcH, srcFormat, flags, NULL, NULL, NULL);
-    if (!srcContext) {
-        fprintf(stderr, "Failed to get %s ---> %s\n",
-                sws_format_name(PIX_FMT_YUVA420P),
-                sws_format_name(srcFormat));
-        res = -1;
-
-        goto end;
-    }
-    dstContext= sws_getContext(srcW, srcH, srcFormat, dstW, dstH, dstFormat, flags, NULL, NULL, NULL);
-    if (!dstContext) {
-        fprintf(stderr, "Failed to get %s ---> %s\n",
-                sws_format_name(srcFormat),
-                sws_format_name(dstFormat));
-        res = -1;
-
-        goto end;
-    }
-    outContext= sws_getContext(dstW, dstH, dstFormat, w, h, PIX_FMT_YUVA420P, flags, NULL, NULL, NULL);
-    if (!outContext) {
-        fprintf(stderr, "Failed to get %s ---> %s\n",
-                sws_format_name(dstFormat),
-                sws_format_name(PIX_FMT_YUVA420P));
-        res = -1;
-
-        goto end;
-    }
-//    printf("test %X %X %X -> %X %X %X\n", (int)ref[0], (int)ref[1], (int)ref[2],
-//        (int)src[0], (int)src[1], (int)src[2]);
-
-    sws_scale(srcContext, ref, refStride, 0, h   , src, srcStride);
-    sws_scale(dstContext, src, srcStride, 0, srcH, dst, dstStride);
-    sws_scale(outContext, dst, dstStride, 0, dstH, out, refStride);
-
-    ssdY= getSSD(ref[0], out[0], refStride[0], refStride[0], w, h);
-    if (hasChroma(srcFormat) && hasChroma(dstFormat)) {
-        //FIXME check that output is really gray
-        ssdU= getSSD(ref[1], out[1], refStride[1], refStride[1], (w+1)>>1, (h+1)>>1);
-        ssdV= getSSD(ref[2], out[2], refStride[2], refStride[2], (w+1)>>1, (h+1)>>1);
-    }
-    if (isALPHA(srcFormat) && isALPHA(dstFormat))
-        ssdA= getSSD(ref[3], out[3], refStride[3], refStride[3], w, h);
-
-    ssdY/= w*h;
-    ssdU/= w*h/4;
-    ssdV/= w*h/4;
-    ssdA/= w*h;
-
-    printf(" %s %dx%d -> %s %4dx%4d flags=%2d SSD=%5"PRId64",%5"PRId64",%5"PRId64",%5"PRId64"\n",
-           sws_format_name(srcFormat), srcW, srcH,
-           sws_format_name(dstFormat), dstW, dstH,
-           flags, ssdY, ssdU, ssdV, ssdA);
-    fflush(stdout);
-
-end:
-
-    sws_freeContext(srcContext);
-    sws_freeContext(dstContext);
-    sws_freeContext(outContext);
-
-    for (i=0; i<4; i++) {
-        av_free(src[i]);
-        av_free(dst[i]);
-        av_free(out[i]);
-    }
-
-    return res;
-}
-
-static void selfTest(uint8_t *ref[4], int refStride[4], int w, int h)
-{
-    const int flags[] = { SWS_FAST_BILINEAR,
-                          SWS_BILINEAR, SWS_BICUBIC,
-                          SWS_X       , SWS_POINT  , SWS_AREA, 0 };
-    const int srcW = w;
-    const int srcH = h;
-    const int dstW[] = { srcW - srcW/3, srcW, srcW + srcW/3, 0 };
-    const int dstH[] = { srcH - srcH/3, srcH, srcH + srcH/3, 0 };
-    enum PixelFormat srcFormat, dstFormat;
-
-    for (srcFormat = 0; srcFormat < PIX_FMT_NB; srcFormat++) {
-        if (!sws_isSupportedInput(srcFormat) || !sws_isSupportedOutput(srcFormat))
-            continue;
-
-        for (dstFormat = 0; dstFormat < PIX_FMT_NB; dstFormat++) {
-            int i, j, k;
-            int res = 0;
-
-            if (!sws_isSupportedInput(dstFormat) || !sws_isSupportedOutput(dstFormat))
-                continue;
-
-            printf("%s -> %s\n",
-                   sws_format_name(srcFormat),
-                   sws_format_name(dstFormat));
-            fflush(stdout);
-
-            for (i = 0; dstW[i] && !res; i++)
-                for (j = 0; dstH[j] && !res; j++)
-                    for (k = 0; flags[k] && !res; k++)
-                        res = doTest(ref, refStride, w, h, srcFormat, dstFormat,
-                                     srcW, srcH, dstW[i], dstH[j], flags[k]);
-        }
-    }
-}
-
-#define W 96
-#define H 96
-
-int main(int argc, char **argv)
-{
-    uint8_t *rgb_data = av_malloc (W*H*4);
-    uint8_t *rgb_src[3]= {rgb_data, NULL, NULL};
-    int rgb_stride[3]={4*W, 0, 0};
-    uint8_t *data = av_malloc (4*W*H);
-    uint8_t *src[4]= {data, data+W*H, data+W*H*2, data+W*H*3};
-    int stride[4]={W, W, W, W};
-    int x, y;
-    struct SwsContext *sws;
-    AVLFG rand;
-
-    if (!rgb_data || !data)
-        return -1;
-
-    sws= sws_getContext(W/12, H/12, PIX_FMT_RGB32, W, H, PIX_FMT_YUVA420P, SWS_BILINEAR, NULL, NULL, NULL);
-
-    av_lfg_init(&rand, 1);
-
-    for (y=0; y<H; y++) {
-        for (x=0; x<W*4; x++) {
-            rgb_data[ x + y*4*W]= av_lfg_get(&rand);
-        }
-    }
-    sws_scale(sws, rgb_src, rgb_stride, 0, H, src, stride);
-    sws_freeContext(sws);
-    av_free(rgb_data);
-
-    selfTest(src, stride, W, H);
-    av_free(data);
-
-    return 0;
-}