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-rw-r--r--libvo/yuv2rgb.c414
1 files changed, 414 insertions, 0 deletions
diff --git a/libvo/yuv2rgb.c b/libvo/yuv2rgb.c
new file mode 100644
index 0000000000..43e899bf37
--- /dev/null
+++ b/libvo/yuv2rgb.c
@@ -0,0 +1,414 @@
+/*
+ * yuv2rgb.c, Software YUV to RGB coverter
+ *
+ * Copyright (C) 1999, Aaron Holtzman <aholtzma@ess.engr.uvic.ca>
+ * All Rights Reserved.
+ *
+ * Functions broken out from display_x11.c and several new modes
+ * added by Håkan Hjort <d95hjort@dtek.chalmers.se>
+ *
+ * 15 & 16 bpp support by Franck Sicard <Franck.Sicard@solsoft.fr>
+ *
+ * This file is part of mpeg2dec, a free MPEG-2 video decoder
+ *
+ * mpeg2dec is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * mpeg2dec 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNU Make; see the file COPYING. If not, write to
+ * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include "config.h"
+#include "video_out.h"
+#include "yuv2rgb.h"
+
+uint32_t matrix_coefficients = 6;
+
+const int32_t Inverse_Table_6_9[8][4] = {
+ {117504, 138453, 13954, 34903}, /* no sequence_display_extension */
+ {117504, 138453, 13954, 34903}, /* ITU-R Rec. 709 (1990) */
+ {104597, 132201, 25675, 53279}, /* unspecified */
+ {104597, 132201, 25675, 53279}, /* reserved */
+ {104448, 132798, 24759, 53109}, /* FCC */
+ {104597, 132201, 25675, 53279}, /* ITU-R Rec. 624-4 System B, G */
+ {104597, 132201, 25675, 53279}, /* SMPTE 170M */
+ {117579, 136230, 16907, 35559} /* SMPTE 240M (1987) */
+};
+
+static void yuv2rgb_c_init (int bpp, int mode);
+
+yuv2rgb_fun yuv2rgb;
+
+static void (* yuv2rgb_c_internal) (uint8_t *, uint8_t *,
+ uint8_t *, uint8_t *,
+ void *, void *, int);
+
+static void yuv2rgb_c (void * dst, uint8_t * py,
+ uint8_t * pu, uint8_t * pv,
+ int h_size, int v_size,
+ int rgb_stride, int y_stride, int uv_stride)
+{
+ v_size >>= 1;
+
+ while (v_size--) {
+ yuv2rgb_c_internal (py, py + y_stride, pu, pv, dst, dst + rgb_stride,
+ h_size);
+
+ py += 2 * y_stride;
+ pu += uv_stride;
+ pv += uv_stride;
+ dst += 2 * rgb_stride;
+ }
+}
+
+void yuv2rgb_init (int bpp, int mode)
+{
+ yuv2rgb = NULL;
+#ifdef HAVE_MMX
+ if (yuv2rgb == NULL /*&& (config.flags & VO_MMX_ENABLE)*/) {
+ yuv2rgb = yuv2rgb_init_mmx (bpp, mode);
+ if (yuv2rgb != NULL)
+ fprintf (stderr, "Using MMX for colorspace transform\n");
+ else
+ fprintf (stderr, "Cannot init MMX colorspace transform\n");
+ }
+#endif
+#ifdef HAVE_MLIB
+ if (yuv2rgb == NULL /*&& (config.flags & VO_MLIB_ENABLE)*/) {
+ yuv2rgb = yuv2rgb_init_mlib (bpp, mode);
+ if (yuv2rgb != NULL)
+ fprintf (stderr, "Using mlib for colorspace transform\n");
+ }
+#endif
+ if (yuv2rgb == NULL) {
+ fprintf (stderr, "No accelerated colorspace conversion found\n");
+ yuv2rgb_c_init (bpp, mode);
+ yuv2rgb = (yuv2rgb_fun)yuv2rgb_c;
+ }
+}
+
+void * table_rV[256];
+void * table_gU[256];
+int table_gV[256];
+void * table_bU[256];
+
+#define RGB(i) \
+ U = pu[i]; \
+ V = pv[i]; \
+ r = table_rV[V]; \
+ g = table_gU[U] + table_gV[V]; \
+ b = table_bU[U];
+
+#define DST1(i) \
+ Y = py_1[2*i]; \
+ dst_1[2*i] = r[Y] + g[Y] + b[Y]; \
+ Y = py_1[2*i+1]; \
+ dst_1[2*i+1] = r[Y] + g[Y] + b[Y];
+
+#define DST2(i) \
+ Y = py_2[2*i]; \
+ dst_2[2*i] = r[Y] + g[Y] + b[Y]; \
+ Y = py_2[2*i+1]; \
+ dst_2[2*i+1] = r[Y] + g[Y] + b[Y];
+
+#define DST1RGB(i) \
+ Y = py_1[2*i]; \
+ dst_1[6*i] = r[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = b[Y]; \
+ Y = py_1[2*i+1]; \
+ dst_1[6*i+3] = r[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = b[Y];
+
+#define DST2RGB(i) \
+ Y = py_2[2*i]; \
+ dst_2[6*i] = r[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = b[Y]; \
+ Y = py_2[2*i+1]; \
+ dst_2[6*i+3] = r[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = b[Y];
+
+#define DST1BGR(i) \
+ Y = py_1[2*i]; \
+ dst_1[6*i] = b[Y]; dst_1[6*i+1] = g[Y]; dst_1[6*i+2] = r[Y]; \
+ Y = py_1[2*i+1]; \
+ dst_1[6*i+3] = b[Y]; dst_1[6*i+4] = g[Y]; dst_1[6*i+5] = r[Y];
+
+#define DST2BGR(i) \
+ Y = py_2[2*i]; \
+ dst_2[6*i] = b[Y]; dst_2[6*i+1] = g[Y]; dst_2[6*i+2] = r[Y]; \
+ Y = py_2[2*i+1]; \
+ dst_2[6*i+3] = b[Y]; dst_2[6*i+4] = g[Y]; dst_2[6*i+5] = r[Y];
+
+static void yuv2rgb_c_32 (uint8_t * py_1, uint8_t * py_2,
+ uint8_t * pu, uint8_t * pv,
+ void * _dst_1, void * _dst_2, int h_size)
+{
+ int U, V, Y;
+ uint32_t * r, * g, * b;
+ uint32_t * dst_1, * dst_2;
+
+ h_size >>= 3;
+ dst_1 = _dst_1;
+ dst_2 = _dst_2;
+
+ while (h_size--) {
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+
+ RGB(2);
+ DST1(2);
+ DST2(2);
+
+ RGB(3);
+ DST2(3);
+ DST1(3);
+
+ pu += 4;
+ pv += 4;
+ py_1 += 8;
+ py_2 += 8;
+ dst_1 += 8;
+ dst_2 += 8;
+ }
+}
+
+// This is very near from the yuv2rgb_c_32 code
+static void yuv2rgb_c_24_rgb (uint8_t * py_1, uint8_t * py_2,
+ uint8_t * pu, uint8_t * pv,
+ void * _dst_1, void * _dst_2, int h_size)
+{
+ int U, V, Y;
+ uint8_t * r, * g, * b;
+ uint8_t * dst_1, * dst_2;
+
+ h_size >>= 3;
+ dst_1 = _dst_1;
+ dst_2 = _dst_2;
+
+ while (h_size--) {
+ RGB(0);
+ DST1RGB(0);
+ DST2RGB(0);
+
+ RGB(1);
+ DST2RGB(1);
+ DST1RGB(1);
+
+ RGB(2);
+ DST1RGB(2);
+ DST2RGB(2);
+
+ RGB(3);
+ DST2RGB(3);
+ DST1RGB(3);
+
+ pu += 4;
+ pv += 4;
+ py_1 += 8;
+ py_2 += 8;
+ dst_1 += 24;
+ dst_2 += 24;
+ }
+}
+
+// only trivial mods from yuv2rgb_c_24_rgb
+static void yuv2rgb_c_24_bgr (uint8_t * py_1, uint8_t * py_2,
+ uint8_t * pu, uint8_t * pv,
+ void * _dst_1, void * _dst_2, int h_size)
+{
+ int U, V, Y;
+ uint8_t * r, * g, * b;
+ uint8_t * dst_1, * dst_2;
+
+ h_size >>= 3;
+ dst_1 = _dst_1;
+ dst_2 = _dst_2;
+
+ while (h_size--) {
+ RGB(0);
+ DST1BGR(0);
+ DST2BGR(0);
+
+ RGB(1);
+ DST2BGR(1);
+ DST1BGR(1);
+
+ RGB(2);
+ DST1BGR(2);
+ DST2BGR(2);
+
+ RGB(3);
+ DST2BGR(3);
+ DST1BGR(3);
+
+ pu += 4;
+ pv += 4;
+ py_1 += 8;
+ py_2 += 8;
+ dst_1 += 24;
+ dst_2 += 24;
+ }
+}
+
+// This is exactly the same code as yuv2rgb_c_32 except for the types of
+// r, g, b, dst_1, dst_2
+static void yuv2rgb_c_16 (uint8_t * py_1, uint8_t * py_2,
+ uint8_t * pu, uint8_t * pv,
+ void * _dst_1, void * _dst_2, int h_size)
+{
+ int U, V, Y;
+ uint16_t * r, * g, * b;
+ uint16_t * dst_1, * dst_2;
+
+ h_size >>= 3;
+ dst_1 = _dst_1;
+ dst_2 = _dst_2;
+
+ while (h_size--) {
+ RGB(0);
+ DST1(0);
+ DST2(0);
+
+ RGB(1);
+ DST2(1);
+ DST1(1);
+
+ RGB(2);
+ DST1(2);
+ DST2(2);
+
+ RGB(3);
+ DST2(3);
+ DST1(3);
+
+ pu += 4;
+ pv += 4;
+ py_1 += 8;
+ py_2 += 8;
+ dst_1 += 8;
+ dst_2 += 8;
+ }
+}
+
+static int div_round (int dividend, int divisor)
+{
+ if (dividend > 0)
+ return (dividend + (divisor>>1)) / divisor;
+ else
+ return -((-dividend + (divisor>>1)) / divisor);
+}
+
+static void yuv2rgb_c_init (int bpp, int mode)
+{
+ int i;
+ uint8_t table_Y[1024];
+ uint32_t *table_32 = 0;
+ uint16_t *table_16 = 0;
+ uint8_t *table_8 = 0;
+ uint32_t entry_size = 0;
+ void *table_r = 0, *table_g = 0, *table_b = 0;
+
+ int crv = Inverse_Table_6_9[matrix_coefficients][0];
+ int cbu = Inverse_Table_6_9[matrix_coefficients][1];
+ int cgu = -Inverse_Table_6_9[matrix_coefficients][2];
+ int cgv = -Inverse_Table_6_9[matrix_coefficients][3];
+
+ for (i = 0; i < 1024; i++) {
+ int j;
+
+ j = (76309 * (i - 384 - 16) + 32768) >> 16;
+ j = (j < 0) ? 0 : ((j > 255) ? 255 : j);
+ table_Y[i] = j;
+ }
+
+ switch (bpp) {
+ case 32:
+ yuv2rgb_c_internal = yuv2rgb_c_32;
+
+ table_32 = malloc ((197 + 2*682 + 256 + 132) * sizeof (uint32_t));
+
+ entry_size = sizeof (uint32_t);
+ table_r = table_32 + 197;
+ table_b = table_32 + 197 + 685;
+ table_g = table_32 + 197 + 2*682;
+
+ for (i = -197; i < 256+197; i++)
+ ((uint32_t *)table_r)[i] = table_Y[i+384] << ((mode==MODE_RGB) ? 16 : 0);
+ for (i = -132; i < 256+132; i++)
+ ((uint32_t *)table_g)[i] = table_Y[i+384] << 8;
+ for (i = -232; i < 256+232; i++)
+ ((uint32_t *)table_b)[i] = table_Y[i+384] << ((mode==MODE_RGB) ? 0 : 16);
+ break;
+
+ case 24:
+// yuv2rgb_c_internal = (mode==MODE_RGB) ? yuv2rgb_c_24_rgb : yuv2rgb_c_24_bgr;
+ yuv2rgb_c_internal = (mode!=MODE_RGB) ? yuv2rgb_c_24_rgb : yuv2rgb_c_24_bgr;
+
+ table_8 = malloc ((256 + 2*232) * sizeof (uint8_t));
+
+ entry_size = sizeof (uint8_t);
+ table_r = table_g = table_b = table_8 + 232;
+
+ for (i = -232; i < 256+232; i++)
+ ((uint8_t * )table_b)[i] = table_Y[i+384];
+ break;
+
+ case 15:
+ case 16:
+ yuv2rgb_c_internal = yuv2rgb_c_16;
+
+ table_16 = malloc ((197 + 2*682 + 256 + 132) * sizeof (uint16_t));
+
+ entry_size = sizeof (uint16_t);
+ table_r = table_16 + 197;
+ table_b = table_16 + 197 + 685;
+ table_g = table_16 + 197 + 2*682;
+
+ for (i = -197; i < 256+197; i++) {
+ int j = table_Y[i+384] >> 3;
+
+ if (mode == MODE_RGB)
+ j <<= ((bpp==16) ? 11 : 10);
+
+ ((uint16_t *)table_r)[i] = j;
+ }
+ for (i = -132; i < 256+132; i++) {
+ int j = table_Y[i+384] >> ((bpp==16) ? 2 : 3);
+
+ ((uint16_t *)table_g)[i] = j << 5;
+ }
+ for (i = -232; i < 256+232; i++) {
+ int j = table_Y[i+384] >> 3;
+
+ if (mode == MODE_BGR)
+ j <<= ((bpp==16) ? 11 : 10);
+
+ ((uint16_t *)table_b)[i] = j;
+ }
+ break;
+
+ default:
+ fprintf (stderr, "%ibpp not supported by yuv2rgb\n", bpp);
+ exit (1);
+ }
+
+ for (i = 0; i < 256; i++) {
+ table_rV[i] = table_r + entry_size * div_round (crv * (i-128), 76309);
+ table_gU[i] = table_g + entry_size * div_round (cgu * (i-128), 76309);
+ table_gV[i] = entry_size * div_round (cgv * (i-128), 76309);
+ table_bU[i] = table_b + entry_size * div_round (cbu * (i-128), 76309);
+ }
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-04-19 19:17:49 +0000