alac: reduce the number of local variables needed in lpc prediction

[ffmpeg] / tests / videogen.c

diff --git a/tests/videogen.c b/tests/videogen.c
index 1aad70031e74366cd9aaab91b51bc33dc4e628f2..0b7f67eb18925252e22bc0839416740dd153a0e1 100644 (file)
--- a/tests/videogen.c
+++ b/tests/videogen.c
@@ -25,134 +25,7 @@
 #include <stdint.h>
 #include <stdio.h>
 
-#define SCALEBITS 8
-#define ONE_HALF  (1 << (SCALEBITS - 1))
-#define FIX(x)    ((int) ((x) * (1L << SCALEBITS) + 0.5))
-
-static void rgb24_to_yuv420p(uint8_t *lum, uint8_t *cb, uint8_t *cr,
-                             uint8_t *src, int width, int height)
-{
-    int wrap, wrap3, x, y;
-    int r, g, b, r1, g1, b1;
-    uint8_t *p;
-
-    wrap  = width;
-    wrap3 = width * 3;
-    p     = src;
-    for (y = 0; y < height; y += 2) {
-        for (x = 0; x < width; x += 2) {
-            r       = p[0];
-            g       = p[1];
-            b       = p[2];
-            r1      = r;
-            g1      = g;
-            b1      = b;
-            lum[0]  = (FIX(0.29900) * r + FIX(0.58700) * g +
-                       FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
-            r       = p[3];
-            g       = p[4];
-            b       = p[5];
-            r1     += r;
-            g1     += g;
-            b1     += b;
-            lum[1]  = (FIX(0.29900) * r + FIX(0.58700) * g +
-                       FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
-            p      += wrap3;
-            lum    += wrap;
-
-            r       = p[0];
-            g       = p[1];
-            b       = p[2];
-            r1     += r;
-            g1     += g;
-            b1     += b;
-            lum[0]  = (FIX(0.29900) * r + FIX(0.58700) * g +
-                       FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
-            r       = p[3];
-            g       = p[4];
-            b       = p[5];
-            r1     += r;
-            g1     += g;
-            b1     += b;
-            lum[1]  = (FIX(0.29900) * r + FIX(0.58700) * g +
-                       FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
-
-            cb[0]   = 128 + ((- FIX(0.16874) * r1 -
-                                FIX(0.33126) * g1 +
-                                FIX(0.50000) * b1 +
-                              4 * ONE_HALF - 1)
-                             >> (SCALEBITS + 2));
-            cr[0]   = 128 + ((FIX(0.50000) * r1 -
-                              FIX(0.41869) * g1 -
-                              FIX(0.08131) * b1 +
-                              4 * ONE_HALF - 1)
-                             >> (SCALEBITS + 2));
-
-            cb++;
-            cr++;
-            p   += -wrap3 + 2 * 3;
-            lum += -wrap + 2;
-        }
-        p   += wrap3;
-        lum += wrap;
-    }
-}
-
-/* cif format */
-#define DEFAULT_WIDTH   352
-#define DEFAULT_HEIGHT  288
-#define DEFAULT_NB_PICT 50 /* 2 seconds */
-
-static void pgmyuv_save(const char *filename, int w, int h,
-                        unsigned char *rgb_tab)
-{
-    FILE *f;
-    int i, h2, w2;
-    unsigned char *cb, *cr;
-    unsigned char *lum_tab, *cb_tab, *cr_tab;
-
-    lum_tab = malloc(w * h);
-    cb_tab  = malloc((w * h) / 4);
-    cr_tab  = malloc((w * h) / 4);
-
-    rgb24_to_yuv420p(lum_tab, cb_tab, cr_tab, rgb_tab, w, h);
-
-    f = fopen(filename, "wb");
-    fprintf(f, "P5\n%d %d\n%d\n", w, (h * 3) / 2, 255);
-    fwrite(lum_tab, 1, w * h, f);
-    h2 = h / 2;
-    w2 = w / 2;
-    cb = cb_tab;
-    cr = cr_tab;
-    for (i = 0; i < h2; i++) {
-        fwrite(cb, 1, w2, f);
-        fwrite(cr, 1, w2, f);
-        cb += w2;
-        cr += w2;
-    }
-    fclose(f);
-
-    free(lum_tab);
-    free(cb_tab);
-    free(cr_tab);
-}
-
-unsigned char *rgb_tab;
-int width, height, wrap;
-
-static void put_pixel(int x, int y, int r, int g, int b)
-{
-    unsigned char *p;
-
-    if (x < 0 || x >= width ||
-        y < 0 || y >= height)
-        return;
-
-    p    = rgb_tab + y * wrap + x * 3;
-    p[0] = r;
-    p[1] = g;
-    p[2] = b;
-}
+#include "utils.c"
 
 static unsigned int myrnd(unsigned int *seed_ptr, int n)
 {
@@ -200,9 +73,9 @@ typedef struct VObj {
     int r, g, b;
 } VObj;
 
-VObj objs[NB_OBJS];
+static VObj objs[NB_OBJS];
 
-unsigned int seed = 1;
+static unsigned int seed = 1;
 
 static void gen_image(int num, int w, int h)
 {
@@ -272,13 +145,17 @@ int main(int argc, char **argv)
 {
     int w, h, i;
     char buf[1024];
+    int isdir = 0;
 
     if (argc != 2) {
-        printf("usage: %s file\n"
+        printf("usage: %s file|dir\n"
                "generate a test video stream\n", argv[0]);
         exit(1);
     }
 
+    if (!freopen(argv[1], "wb", stdout))
+        isdir = 1;
+
     w = DEFAULT_WIDTH;
     h = DEFAULT_HEIGHT;
 
@@ -288,9 +165,13 @@ int main(int argc, char **argv)
     height  = h;
 
     for (i = 0; i < DEFAULT_NB_PICT; i++) {
-        snprintf(buf, sizeof(buf), "%s%02d.pgm", argv[1], i);
         gen_image(i, w, h);
-        pgmyuv_save(buf, w, h, rgb_tab);
+        if (isdir) {
+            snprintf(buf, sizeof(buf), "%s%02d.pgm", argv[1], i);
+            pgmyuv_save(buf, w, h, rgb_tab);
+        } else {
+            pgmyuv_save(NULL, w, h, rgb_tab);
+        }
     }
 
     free(rgb_tab);