add helpful PrintBlockInfo() function
(protected under a DEBUG_BLOCK compile flag)
Change-Id: Icb8da02dbd00e5cf856c314943c212f1c9578d9b
diff --git a/src/enc/quant.c b/src/enc/quant.c
index dded3be..9cc6ab1 100644
--- a/src/enc/quant.c
+++ b/src/enc/quant.c
@@ -34,12 +34,69 @@
#define MULT_8B(a, b) (((a) * (b) + 128) >> 8)
+// #define DEBUG_BLOCK
+
#if defined(__cplusplus) || defined(c_plusplus)
extern "C" {
#endif
//------------------------------------------------------------------------------
+#if defined(DEBUG_BLOCK)
+
+#include <stdio.h>
+#include <stdlib.h>
+
+static void PrintBlockInfo(const VP8EncIterator* const it,
+ const VP8ModeScore* const rd) {
+ int i, j;
+ const int is_i16 = (it->mb_->type_ == 1);
+ printf("SOURCE / OUTPUT / ABS DELTA\n");
+ for (j = 0; j < 24; ++j) {
+ if (j == 16) printf("\n"); // newline before the U/V block
+ for (i = 0; i < 16; ++i) printf("%3d ", it->yuv_in_[i + j * BPS]);
+ printf(" ");
+ for (i = 0; i < 16; ++i) printf("%3d ", it->yuv_out_[i + j * BPS]);
+ printf(" ");
+ for (i = 0; i < 16; ++i) {
+ printf("%1d ", abs(it->yuv_out_[i + j * BPS] - it->yuv_in_[i + j * BPS]));
+ }
+ printf("\n");
+ }
+ printf("\nD:%d SD:%d R:%d H:%d nz:0x%x score:%d\n",
+ (int)rd->D, (int)rd->SD, (int)rd->R, (int)rd->H, (int)rd->nz,
+ (int)rd->score);
+ if (is_i16) {
+ printf("Mode: %d\n", rd->mode_i16);
+ printf("y_dc_levels:");
+ for (i = 0; i < 16; ++i) printf("%3d ", rd->y_dc_levels[i]);
+ printf("\n");
+ } else {
+ printf("Modes[16]: ");
+ for (i = 0; i < 16; ++i) printf("%d ", rd->modes_i4[i]);
+ printf("\n");
+ }
+ printf("y_ac_levels:\n");
+ for (j = 0; j < 16; ++j) {
+ for (i = is_i16 ? 1 : 0; i < 16; ++i) {
+ printf("%4d ", rd->y_ac_levels[j][i]);
+ }
+ printf("\n");
+ }
+ printf("\n");
+ printf("uv_levels (mode=%d):\n", rd->mode_uv);
+ for (j = 0; j < 8; ++j) {
+ for (i = 0; i < 16; ++i) {
+ printf("%4d ", rd->uv_levels[j][i]);
+ }
+ printf("\n");
+ }
+}
+
+#endif // DEBUG_BLOCK
+
+//------------------------------------------------------------------------------
+
static WEBP_INLINE int clip(int v, int m, int M) {
return v < m ? m : v > M ? M : v;
}
