[SCM] libav/experimental: simplified code (need automatic testing) - added primitive new format support.
siretart at users.alioth.debian.org
siretart at users.alioth.debian.org
Sun Jun 30 15:34:52 UTC 2013
The following commit has been merged in the experimental branch:
commit 524c6b6342e4d8bcc4dcc582b4056003d165eb20
Author: Fabrice Bellard <fabrice at bellard.org>
Date: Sat Jan 11 00:08:48 2003 +0000
simplified code (need automatic testing) - added primitive new format support.
Originally committed as revision 1431 to svn://svn.ffmpeg.org/ffmpeg/trunk
diff --git a/libavcodec/imgconvert.c b/libavcodec/imgconvert.c
index bdf6fe6..afab5ac 100644
--- a/libavcodec/imgconvert.c
+++ b/libavcodec/imgconvert.c
@@ -1,6 +1,6 @@
/*
* Misc image convertion routines
- * Copyright (c) 2001, 2002 Fabrice Bellard.
+ * Copyright (c) 2001, 2002, 2003 Fabrice Bellard.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -26,14 +26,123 @@
#ifdef HAVE_MMX
#include "i386/mmx.h"
#endif
+
+typedef struct PixFmtInfo {
+ const char *name;
+ UINT8 nb_components; /* number of components in AVPicture array */
+ UINT8 is_yuv : 1; /* true if YUV instead of RGB color space */
+ UINT8 is_packed : 1; /* true if multiple components in same word */
+ UINT8 is_paletted : 1; /* true if paletted */
+ UINT8 is_alpha : 1; /* true if alpha can be specified */
+ UINT8 is_gray : 1; /* true if gray or monochrome format */
+ UINT8 x_chroma_shift; /* X chroma subsampling factor is 2 ^ shift */
+ UINT8 y_chroma_shift; /* Y chroma subsampling factor is 2 ^ shift */
+} PixFmtInfo;
+
+/* this table gives more information about formats */
+static PixFmtInfo pix_fmt_info[PIX_FMT_NB] = {
+ /* YUV formats */
+ [PIX_FMT_YUV420P] = {
+ name: "yuv420p",
+ nb_components: 3, is_yuv: 1,
+ x_chroma_shift: 1, y_chroma_shift: 1,
+ },
+ [PIX_FMT_YUV422P] = {
+ name: "yuv422p",
+ nb_components: 3, is_yuv: 1,
+ x_chroma_shift: 1, y_chroma_shift: 0,
+ },
+ [PIX_FMT_YUV444P] = {
+ name: "yuv444p",
+ nb_components: 3, is_yuv: 1,
+ x_chroma_shift: 0, y_chroma_shift: 0,
+ },
+ [PIX_FMT_YUV422] = {
+ name: "yuv422",
+ nb_components: 1, is_yuv: 1, is_packed: 1,
+ x_chroma_shift: 1, y_chroma_shift: 0,
+ },
+ [PIX_FMT_YUV410P] = {
+ name: "yuv410p",
+ nb_components: 3, is_yuv: 1,
+ x_chroma_shift: 2, y_chroma_shift: 2,
+ },
+ [PIX_FMT_YUV411P] = {
+ name: "yuv411p",
+ nb_components: 3, is_yuv: 1,
+ x_chroma_shift: 2, y_chroma_shift: 0,
+ },
+
+ /* RGB formats */
+ [PIX_FMT_RGB24] = {
+ name: "rgb24",
+ nb_components: 1, is_packed: 1,
+ },
+ [PIX_FMT_BGR24] = {
+ name: "bgr24",
+ nb_components: 1, is_packed: 1,
+ },
+ [PIX_FMT_RGBA32] = {
+ name: "rgba32",
+ nb_components: 1, is_packed: 1, is_alpha: 1,
+ },
+ [PIX_FMT_RGB565] = {
+ name: "rgb565",
+ nb_components: 1, is_packed: 1,
+ },
+ [PIX_FMT_RGB555] = {
+ name: "rgb555",
+ nb_components: 1, is_packed: 1, is_alpha : 1,
+ },
+
+ /* gray / mono formats */
+ [PIX_FMT_GRAY8] = {
+ name: "gray",
+ nb_components: 1, is_gray: 1,
+ },
+ [PIX_FMT_MONOWHITE] = {
+ name: "monow",
+ nb_components: 1, is_packed: 1, is_gray: 1,
+ },
+ [PIX_FMT_MONOBLACK] = {
+ name: "monob",
+ nb_components: 1, is_packed: 1, is_gray: 1,
+ },
+};
+
+void avcodec_get_chroma_sub_sample(int pix_fmt, int *h_shift, int *v_shift)
+{
+ if (pix_fmt_info[pix_fmt].is_yuv) {
+ *h_shift = pix_fmt_info[pix_fmt].x_chroma_shift;
+ *v_shift = pix_fmt_info[pix_fmt].y_chroma_shift;
+ } else {
+ *h_shift=0;
+ *v_shift=0;
+ }
+}
+
+const char *avcodec_get_pix_fmt_name(int pix_fmt)
+{
+ if (pix_fmt < 0 || pix_fmt >= PIX_FMT_NB)
+ return "???";
+ else
+ return pix_fmt_info[pix_fmt].name;
+}
+
/* XXX: totally non optimized */
-static void yuv422_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
- UINT8 *src, int width, int height)
+static void yuv422_to_yuv420p(AVPicture *dst, AVPicture *src,
+ int width, int height)
{
+ UINT8 *lum, *cb, *cr;
int x, y;
- UINT8 *p = src;
-
+ const UINT8 *p;
+
+ lum = dst->data[0];
+ cb = dst->data[1];
+ cr = dst->data[2];
+ p = src->data[0];
+
for(y=0;y<height;y+=2) {
for(x=0;x<width;x+=2) {
lum[0] = p[0];
@@ -58,342 +167,6 @@ static void yuv422_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
#define ONE_HALF (1 << (SCALEBITS - 1))
#define FIX(x) ((int) ((x) * (1L<<SCALEBITS) + 0.5))
-static void rgb24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
- UINT8 *src, int width, int height)
-{
- int wrap, wrap3, x, y;
- int r, g, b, r1, g1, b1;
- UINT8 *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] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
- FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
- cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
- FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
-
- cb++;
- cr++;
- p += -wrap3 + 2 * 3;
- lum += -wrap + 2;
- }
- p += wrap3;
- lum += wrap;
- }
-}
-
-static void rgba32_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
- UINT8 *src, int width, int height)
-{
- int wrap, wrap4, x, y;
- int r, g, b, r1, g1, b1;
- UINT8 *p;
-
- wrap = width;
- wrap4 = width * 4;
- 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[4];
- g = p[5];
- b = p[6];
- r1 += r;
- g1 += g;
- b1 += b;
- lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
- p += wrap4;
- 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[4];
- g = p[5];
- b = p[6];
- 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] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
- FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
- cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
- FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
-
- cb++;
- cr++;
- p += -wrap4 + 2 * 4;
- lum += -wrap + 2;
- }
- p += wrap4;
- lum += wrap;
- }
-}
-
-#define rgb565_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0800,31, 0x0020,63,0x0001,31)
-#define rgb555_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0400,31, 0x0020,31,0x0001,31)
-#define rgb5551_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0800,31, 0x0040,31,0x0002,31)
-#define bgr565_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0020,63,0x0800,31)
-#define bgr555_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0020,31,0x0400,31)
-#define gbr565_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0800,31,0x0040,63)
-#define gbr555_to_yuv420p(lum,cb,cr,src,width,height) rgbmisc_to_yuv420p((lum),(cb),(cr),(src),(width),(height),0x0001,31, 0x0400,31,0x0020,31)
-
-static void rgbmisc_to_yuv420p
- (UINT8 *lum, UINT8 *cb, UINT8 *cr,
- UINT8 *src, int width, int height,
-
- UINT16 R_LOWMASK, UINT16 R_MAX,
- UINT16 G_LOWMASK, UINT16 G_MAX,
- UINT16 B_LOWMASK, UINT16 B_MAX
- )
-{
- int wrap, wrap2, x, y;
- int r, g, b, r1, g1, b1;
- UINT8 *p;
- UINT16 pixel;
-
- wrap = width;
- wrap2 = width * 2;
- p = src;
- for(y=0;y<height;y+=2) {
- for(x=0;x<width;x+=2) {
- pixel = p[0] | (p[1]<<8);
- r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
- g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
- b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
- r1 = r;
- g1 = g;
- b1 = b;
- lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
-
- pixel = p[2] | (p[3]<<8);
- r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
- g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
- b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
- r1 += r;
- g1 += g;
- b1 += b;
- lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
- p += wrap2;
- lum += wrap;
-
- pixel = p[0] | (p[1]<<8);
- r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
- g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
- b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
- r1 += r;
- g1 += g;
- b1 += b;
- lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
- pixel = p[2] | (p[3]<<8);
- r = (((pixel/R_LOWMASK) & R_MAX) * (0x100 / (R_MAX+1)));
- g = (((pixel/G_LOWMASK) & G_MAX) * (0x100 / (G_MAX+1)));
- b = (((pixel/B_LOWMASK) & B_MAX) * (0x100 / (B_MAX+1)));
- 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] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
- FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
- cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
- FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
-
- cb++;
- cr++;
- p += -wrap2 + 2 * 2;
- lum += -wrap + 2;
- }
- p += wrap2;
- lum += wrap;
- }
-}
-
-
-static void bgr24_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
- UINT8 *src, int width, int height)
-{
- int wrap, wrap3, x, y;
- int r, g, b, r1, g1, b1;
- UINT8 *p;
-
- wrap = width;
- wrap3 = width * 3;
- p = src;
- for(y=0;y<height;y+=2) {
- for(x=0;x<width;x+=2) {
- b = p[0];
- g = p[1];
- r = 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;
- b = p[3];
- g = p[4];
- r = 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;
-
- b = p[0];
- g = p[1];
- r = 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;
- b = p[3];
- g = p[4];
- r = 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] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
- FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
- cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
- FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
-
- cb++;
- cr++;
- p += -wrap3 + 2 * 3;
- lum += -wrap + 2;
- }
- p += wrap3;
- lum += wrap;
- }
-}
-
-static void bgra32_to_yuv420p(UINT8 *lum, UINT8 *cb, UINT8 *cr,
- UINT8 *src, int width, int height)
-{
- int wrap, wrap4, x, y;
- int r, g, b, r1, g1, b1;
- UINT8 *p;
-
- wrap = width;
- wrap4 = width * 4;
- p = src;
- for(y=0;y<height;y+=2) {
- for(x=0;x<width;x+=2) {
- b = p[0];
- g = p[1];
- r = 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;
- b = p[4];
- g = p[5];
- r = p[6];
- r1 += r;
- g1 += g;
- b1 += b;
- lum[1] = (FIX(0.29900) * r + FIX(0.58700) * g +
- FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
- p += wrap4;
- lum += wrap;
-
- b = p[0];
- g = p[1];
- r = 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;
- b = p[4];
- g = p[5];
- r = p[6];
- 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] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 +
- FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
- cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 -
- FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> (SCALEBITS + 2)) + 128;
-
- cb++;
- cr++;
- p += -wrap4 + 2 * 4;
- lum += -wrap + 2;
- }
- p += wrap4;
- lum += wrap;
- }
-}
-
/* XXX: use generic filter ? */
/* 1x2 -> 1x1 */
static void shrink2(UINT8 *dst, int dst_wrap,
@@ -487,7 +260,7 @@ static void grow22(UINT8 *dst, int dst_wrap,
}
}
-/* 1x2 -> 2x1. width and height are given for the source picture */
+/* 1x2 -> 2x1 */
static void conv411(UINT8 *dst, int dst_wrap,
UINT8 *src, int src_wrap,
int width, int height)
@@ -495,7 +268,7 @@ static void conv411(UINT8 *dst, int dst_wrap,
int w, c;
UINT8 *s1, *s2, *d;
- for(;height > 0; height -= 2) {
+ for(;height > 0; height--) {
s1 = src;
s2 = src + src_wrap;
d = dst;
@@ -531,7 +304,7 @@ static void img_copy(UINT8 *dst, int dst_wrap,
#define C_GU (13954 >> (16 - SCALE_BITS))
#define C_GV (34903 >> (16 - SCALE_BITS))
-#define RGBOUT(r, g, b, y1)\
+#define YUV_TO_RGB2(r, g, b, y1)\
{\
y = (y1 - 16) * C_Y;\
r = cm[(y + r_add) >> SCALE_BITS];\
@@ -540,340 +313,759 @@ static void img_copy(UINT8 *dst, int dst_wrap,
}
/* XXX: no chroma interpolating is done */
-static void yuv420p_to_bgra32(AVPicture *dst, AVPicture *src,
- int width, int height)
+#define RGB_FUNCTIONS(rgb_name) \
+ \
+static void yuv420p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
+ int width, int height) \
+{ \
+ UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2; \
+ int w, y, cb, cr, r_add, g_add, b_add, width2; \
+ UINT8 *cm = cropTbl + MAX_NEG_CROP; \
+ unsigned int r, g, b; \
+ \
+ d = dst->data[0]; \
+ y1_ptr = src->data[0]; \
+ cb_ptr = src->data[1]; \
+ cr_ptr = src->data[2]; \
+ width2 = width >> 1; \
+ for(;height > 0; height -= 2) { \
+ d1 = d; \
+ d2 = d + dst->linesize[0]; \
+ y2_ptr = y1_ptr + src->linesize[0]; \
+ for(w = width2; w > 0; w --) { \
+ cb = cb_ptr[0] - 128; \
+ cr = cr_ptr[0] - 128; \
+ r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
+ g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
+ b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
+ \
+ /* output 4 pixels */ \
+ YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
+ RGB_OUT(d1, r, g, b); \
+ \
+ YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
+ RGB_OUT(d1 + BPP, r, g, b); \
+ \
+ YUV_TO_RGB2(r, g, b, y2_ptr[0]); \
+ RGB_OUT(d2, r, g, b); \
+ \
+ YUV_TO_RGB2(r, g, b, y2_ptr[1]); \
+ RGB_OUT(d2 + BPP, r, g, b); \
+ \
+ d1 += 2 * BPP; \
+ d2 += 2 * BPP; \
+ \
+ y1_ptr += 2; \
+ y2_ptr += 2; \
+ cb_ptr++; \
+ cr_ptr++; \
+ } \
+ d += 2 * dst->linesize[0]; \
+ y1_ptr += 2 * src->linesize[0] - width; \
+ cb_ptr += src->linesize[1] - width2; \
+ cr_ptr += src->linesize[2] - width2; \
+ } \
+} \
+ \
+/* XXX: no chroma interpolating is done */ \
+static void yuv422p_to_ ## rgb_name (AVPicture *dst, AVPicture *src, \
+ int width, int height) \
+{ \
+ UINT8 *y1_ptr, *cb_ptr, *cr_ptr, *d, *d1; \
+ int w, y, cb, cr, r_add, g_add, b_add, width2; \
+ UINT8 *cm = cropTbl + MAX_NEG_CROP; \
+ unsigned int r, g, b; \
+ \
+ d = dst->data[0]; \
+ y1_ptr = src->data[0]; \
+ cb_ptr = src->data[1]; \
+ cr_ptr = src->data[2]; \
+ width2 = width >> 1; \
+ for(;height > 0; height --) { \
+ d1 = d; \
+ for(w = width2; w > 0; w --) { \
+ cb = cb_ptr[0] - 128; \
+ cr = cr_ptr[0] - 128; \
+ r_add = C_RV * cr + (1 << (SCALE_BITS - 1)); \
+ g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1)); \
+ b_add = C_BU * cb + (1 << (SCALE_BITS - 1)); \
+ \
+ /* output 2 pixels */ \
+ YUV_TO_RGB2(r, g, b, y1_ptr[0]); \
+ RGB_OUT(d, r, g, b); \
+ \
+ YUV_TO_RGB2(r, g, b, y1_ptr[1]); \
+ RGB_OUT(d + BPP, r, g, b); \
+ \
+ d += 2 * BPP; \
+ \
+ y1_ptr += 2; \
+ cb_ptr++; \
+ cr_ptr++; \
+ } \
+ d += dst->linesize[0]; \
+ y1_ptr += src->linesize[0] - width; \
+ cb_ptr += src->linesize[1] - width2; \
+ cr_ptr += src->linesize[2] - width2; \
+ } \
+} \
+ \
+static void rgb_name ## _to_yuv420p(AVPicture *dst, AVPicture *src, \
+ int width, int height) \
+{ \
+ int wrap, wrap3, x, y; \
+ int r, g, b, r1, g1, b1; \
+ UINT8 *lum, *cb, *cr; \
+ const UINT8 *p; \
+ \
+ lum = dst->data[0]; \
+ cb = dst->data[1]; \
+ cr = dst->data[2]; \
+ \
+ wrap = width; \
+ wrap3 = width * 3; \
+ p = src->data[0]; \
+ for(y=0;y<height;y+=2) { \
+ for(x=0;x<width;x+=2) { \
+ RGB_IN(r, g, b, p); \
+ r1 = r; \
+ g1 = g; \
+ b1 = b; \
+ lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
+ FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
+ RGB_IN(r, g, b, p + BPP); \
+ 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; \
+ \
+ RGB_IN(r, g, b, p); \
+ r1 += r; \
+ g1 += g; \
+ b1 += b; \
+ lum[0] = (FIX(0.29900) * r + FIX(0.58700) * g + \
+ FIX(0.11400) * b + ONE_HALF) >> SCALEBITS; \
+ \
+ RGB_IN(r, g, b, p + BPP); \
+ 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] = ((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
+ FIX(0.50000) * b1 + 4 * ONE_HALF - 1) >> \
+ (SCALEBITS + 2)) + 128; \
+ cr[0] = ((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
+ FIX(0.08131) * b1 + 4 * ONE_HALF - 1) >> \
+ (SCALEBITS + 2)) + 128; \
+ \
+ cb++; \
+ cr++; \
+ p += -wrap3 + 2 * 3; \
+ lum += -wrap + 2; \
+ } \
+ p += wrap3; \
+ lum += wrap; \
+ } \
+}
+
+/* copy bit n to bits 0 ... n - 1 */
+static inline unsigned int bitcopy_n(unsigned int a, int n)
{
- UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2;
- int w, y, cb, cr, r_add, g_add, b_add, width2;
- UINT8 *cm = cropTbl + MAX_NEG_CROP;
+ int mask;
+ mask = (1 << n) - 1;
+ return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask);
+}
- d = dst->data[0];
- y1_ptr = src->data[0];
- cb_ptr = src->data[1];
- cr_ptr = src->data[2];
- width2 = width >> 1;
- for(;height > 0; height -= 2) {
- d1 = d;
- d2 = d + dst->linesize[0];
- y2_ptr = y1_ptr + src->linesize[0];
- for(w = width2; w > 0; w --) {
- cb = cb_ptr[0] - 128;
- cr = cr_ptr[0] - 128;
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1));
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1));
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1));
-
- /* output 4 pixels */
- RGBOUT(d1[2], d1[1], d1[0], y1_ptr[0]);
- RGBOUT(d1[6], d1[5], d1[4], y1_ptr[1]);
- RGBOUT(d2[2], d2[1], d2[0], y2_ptr[0]);
- RGBOUT(d2[6], d2[5], d2[4], y2_ptr[1]);
-
- d1[3] = d1[7] = d2[3] = d2[7] = 255;
-
- d1 += 8;
- d2 += 8;
- y1_ptr += 2;
- y2_ptr += 2;
- cb_ptr++;
- cr_ptr++;
+/* rgb555 handling */
+
+#define RGB_IN(r, g, b, s)\
+{\
+ unsigned int v = ((UINT16 *)(s))[0];\
+ r = bitcopy_n(v >> (10 - 3), 3);\
+ g = bitcopy_n(v >> (5 - 3), 3);\
+ b = bitcopy_n(v << 3, 3);\
+}
+
+#define RGB_OUT(d, r, g, b)\
+{\
+ ((UINT16 *)(d))[0] = ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000;\
+}
+
+#define BPP 2
+
+RGB_FUNCTIONS(rgb555)
+
+#undef RGB_IN
+#undef RGB_OUT
+#undef BPP
+
+/* rgb565 handling */
+
+#define RGB_IN(r, g, b, s)\
+{\
+ unsigned int v = ((UINT16 *)(s))[0];\
+ r = bitcopy_n(v >> (11 - 3), 3);\
+ g = bitcopy_n(v >> (5 - 2), 2);\
+ b = bitcopy_n(v << 3, 3);\
+}
+
+#define RGB_OUT(d, r, g, b)\
+{\
+ ((UINT16 *)(d))[0] = ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);\
+}
+
+#define BPP 2
+
+RGB_FUNCTIONS(rgb565)
+
+#undef RGB_IN
+#undef RGB_OUT
+#undef BPP
+
+/* bgr24 handling */
+
+#define RGB_IN(r, g, b, s)\
+{\
+ b = (s)[0];\
+ g = (s)[1];\
+ r = (s)[2];\
+}
+
+#define RGB_OUT(d, r, g, b)\
+{\
+ (d)[0] = b;\
+ (d)[1] = g;\
+ (d)[2] = r;\
+}
+
+#define BPP 3
+
+RGB_FUNCTIONS(bgr24)
+
+#undef RGB_IN
+#undef RGB_OUT
+#undef BPP
+
+/* rgb24 handling */
+
+#define RGB_IN(r, g, b, s)\
+{\
+ r = (s)[0];\
+ g = (s)[1];\
+ b = (s)[2];\
+}
+
+#define RGB_OUT(d, r, g, b)\
+{\
+ (d)[0] = r;\
+ (d)[1] = g;\
+ (d)[2] = b;\
+}
+
+#define BPP 3
+
+RGB_FUNCTIONS(rgb24)
+
+#undef RGB_IN
+#undef RGB_OUT
+#undef BPP
+
+/* rgba32 handling */
+
+#define RGB_IN(r, g, b, s)\
+{\
+ unsigned int v = ((UINT32 *)(s))[0];\
+ r = (v >> 16) & 0xff;\
+ g = (v >> 8) & 0xff;\
+ b = v & 0xff;\
+}
+
+#define RGB_OUT(d, r, g, b)\
+{\
+ ((UINT32 *)(d))[0] = (0xff << 24) | (r << 16) | (g << 8) | b;\
+}
+
+#define BPP 4
+
+RGB_FUNCTIONS(rgba32)
+
+#undef RGB_IN
+#undef RGB_OUT
+#undef BPP
+
+
+static void rgb24_to_rgb565(AVPicture *dst, AVPicture *src,
+ int width, int height)
+{
+ const unsigned char *p;
+ unsigned char *q;
+ int r, g, b, dst_wrap, src_wrap;
+ int x, y;
+
+ p = src->data[0];
+ src_wrap = src->linesize[0] - 3 * width;
+
+ q = dst->data[0];
+ dst_wrap = dst->linesize[0] - 2 * width;
+
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ r = p[0];
+ g = p[1];
+ b = p[2];
+
+ ((unsigned short *)q)[0] =
+ ((r >> 3) << 11) | ((g >> 2) << 5) | (b >> 3);
+ q += 2;
+ p += 3;
}
- d += 2 * dst->linesize[0];
- y1_ptr += 2 * src->linesize[0] - width;
- cb_ptr += src->linesize[1] - width2;
- cr_ptr += src->linesize[2] - width2;
+ p += src_wrap;
+ q += dst_wrap;
}
}
-/* XXX: no chroma interpolating is done */
-static void yuv420p_to_rgba32(AVPicture *dst, AVPicture *src,
- int width, int height)
+/* NOTE: we also add a dummy alpha bit */
+static void rgb24_to_rgb555(AVPicture *dst, AVPicture *src,
+ int width, int height)
{
- UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2;
- int w, y, cb, cr, r_add, g_add, b_add, width2;
- UINT8 *cm = cropTbl + MAX_NEG_CROP;
+ const unsigned char *p;
+ unsigned char *q;
+ int r, g, b, dst_wrap, src_wrap;
+ int x, y;
- d = dst->data[0];
- y1_ptr = src->data[0];
- cb_ptr = src->data[1];
- cr_ptr = src->data[2];
- width2 = width >> 1;
- for(;height > 0; height -= 2) {
- d1 = d;
- d2 = d + dst->linesize[0];
- y2_ptr = y1_ptr + src->linesize[0];
- for(w = width2; w > 0; w --) {
- cb = cb_ptr[0] - 128;
- cr = cr_ptr[0] - 128;
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1));
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1));
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1));
-
- /* output 4 pixels */
- RGBOUT(d1[0], d1[1], d1[2], y1_ptr[0]);
- RGBOUT(d1[4], d1[5], d1[6], y1_ptr[1]);
- RGBOUT(d2[0], d2[1], d2[2], y2_ptr[0]);
- RGBOUT(d2[4], d2[5], d2[6], y2_ptr[1]);
-
- d1[3] = d1[7] = d2[3] = d2[7] = 255;
-
- d1 += 8;
- d2 += 8;
- y1_ptr += 2;
- y2_ptr += 2;
- cb_ptr++;
- cr_ptr++;
+ p = src->data[0];
+ src_wrap = src->linesize[0] - 3 * width;
+
+ q = dst->data[0];
+ dst_wrap = dst->linesize[0] - 2 * width;
+
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ r = p[0];
+ g = p[1];
+ b = p[2];
+
+ ((unsigned short *)q)[0] =
+ ((r >> 3) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000;
+ q += 2;
+ p += 3;
}
- d += 2 * dst->linesize[0];
- y1_ptr += 2 * src->linesize[0] - width;
- cb_ptr += src->linesize[1] - width2;
- cr_ptr += src->linesize[2] - width2;
+ p += src_wrap;
+ q += dst_wrap;
}
}
-/* XXX: no chroma interpolating is done */
-static void yuv420p_to_rgb24(AVPicture *dst, AVPicture *src,
- int width, int height)
+static void rgb24_to_gray(AVPicture *dst, AVPicture *src,
+ int width, int height)
{
- UINT8 *y1_ptr, *y2_ptr, *cb_ptr, *cr_ptr, *d, *d1, *d2;
- int w, y, cb, cr, r_add, g_add, b_add, width2;
- UINT8 *cm = cropTbl + MAX_NEG_CROP;
+ const unsigned char *p;
+ unsigned char *q;
+ int r, g, b, dst_wrap, src_wrap;
+ int x, y;
- d = dst->data[0];
- y1_ptr = src->data[0];
- cb_ptr = src->data[1];
- cr_ptr = src->data[2];
- width2 = width >> 1;
- for(;height > 0; height -= 2) {
- d1 = d;
- d2 = d + dst->linesize[0];
- y2_ptr = y1_ptr + src->linesize[0];
- for(w = width2; w > 0; w --) {
- cb = cb_ptr[0] - 128;
- cr = cr_ptr[0] - 128;
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1));
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1));
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1));
-
- /* output 4 pixels */
- RGBOUT(d1[0], d1[1], d1[2], y1_ptr[0]);
- RGBOUT(d1[3], d1[4], d1[5], y1_ptr[1]);
- RGBOUT(d2[0], d2[1], d2[2], y2_ptr[0]);
- RGBOUT(d2[3], d2[4], d2[5], y2_ptr[1]);
-
- d1 += 6;
- d2 += 6;
- y1_ptr += 2;
- y2_ptr += 2;
- cb_ptr++;
- cr_ptr++;
+ p = src->data[0];
+ src_wrap = src->linesize[0] - 3 * width;
+
+ q = dst->data[0];
+ dst_wrap = dst->linesize[0] - width;
+
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ r = p[0];
+ g = p[1];
+ b = p[2];
+
+ q[0] = (FIX(0.29900) * r + FIX(0.58700) * g +
+ FIX(0.11400) * b + ONE_HALF) >> SCALEBITS;
+ q++;
+ p += 3;
}
- d += 2 * dst->linesize[0];
- y1_ptr += 2 * src->linesize[0] - width;
- cb_ptr += src->linesize[1] - width2;
- cr_ptr += src->linesize[2] - width2;
+ p += src_wrap;
+ q += dst_wrap;
}
}
-/* XXX: no chroma interpolating is done */
-static void yuv422p_to_rgb24(AVPicture *dst, AVPicture *src,
- int width, int height)
+static void gray_to_rgb24(AVPicture *dst, AVPicture *src,
+ int width, int height)
{
- UINT8 *y1_ptr, *cb_ptr, *cr_ptr, *d, *d1;
- int w, y, cb, cr, r_add, g_add, b_add, width2;
- UINT8 *cm = cropTbl + MAX_NEG_CROP;
+ const unsigned char *p;
+ unsigned char *q;
+ int r, dst_wrap, src_wrap;
+ int x, y;
+
+ p = src->data[0];
+ src_wrap = src->linesize[0] - width;
- d = dst->data[0];
- y1_ptr = src->data[0];
- cb_ptr = src->data[1];
- cr_ptr = src->data[2];
- width2 = width >> 1;
- for(;height > 0; height --) {
- d1 = d;
- for(w = width2; w > 0; w --) {
- cb = cb_ptr[0] - 128;
- cr = cr_ptr[0] - 128;
- r_add = C_RV * cr + (1 << (SCALE_BITS - 1));
- g_add = - C_GU * cb - C_GV * cr + (1 << (SCALE_BITS - 1));
- b_add = C_BU * cb + (1 << (SCALE_BITS - 1));
+ q = dst->data[0];
+ dst_wrap = dst->linesize[0] - 3 * width;
+
+ for(y=0;y<height;y++) {
+ for(x=0;x<width;x++) {
+ r = p[0];
+
+ q[0] = r;
+ q[1] = r;
+ q[2] = r;
- /* output 2 pixels */
- RGBOUT(d1[0], d1[1], d1[2], y1_ptr[0]);
- RGBOUT(d1[3], d1[4], d1[5], y1_ptr[1]);
-
- d1 += 6;
- y1_ptr += 2;
- cb_ptr++;
- cr_ptr++;
+ q += 3;
+ p ++;
+ }
+ p += src_wrap;
+ q += dst_wrap;
+ }
+}
+
+static void monowhite_to_rgb24(AVPicture *dst, AVPicture *src,
+ int width, int height)
+{
+ const unsigned char *p;
+ unsigned char *q;
+ int v, dst_wrap, src_wrap;
+ int y, w;
+
+ p = src->data[0];
+ src_wrap = src->linesize[0] - ((width + 7) >> 3);
+
+ q = dst->data[0];
+ dst_wrap = dst->linesize[0] - 3 * width;
+
+ for(y=0;y<height;y++) {
+ w = width;
+ while (w >= 8) {
+ v = *p++ ^ 0xff;
+ q[0] = q[1] = q[2] = -(v >> 7); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 6) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 5) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 4) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 3) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 2) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 1) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 0) & 1); q += 3;
+ w -= 8;
+ }
+ if (w > 0) {
+ v = *p++ ^ 0xff;
+ do {
+ q[0] = q[1] = q[2] = -((v >> 7) & 1); q += 3;
+ v <<= 1;
+ } while (--w);
}
- d += dst->linesize[0];
- y1_ptr += src->linesize[0] - width;
- cb_ptr += src->linesize[1] - width2;
- cr_ptr += src->linesize[2] - width2;
+ p += src_wrap;
+ q += dst_wrap;
}
}
+static void monoblack_to_rgb24(AVPicture *dst, AVPicture *src,
+ int width, int height)
+{
+ const unsigned char *p;
+ unsigned char *q;
+ int v, dst_wrap, src_wrap;
+ int y, w;
+
+ p = src->data[0];
+ src_wrap = src->linesize[0] - ((width + 7) >> 3);
+
+ q = dst->data[0];
+ dst_wrap = dst->linesize[0] - 3 * width;
+
+ for(y=0;y<height;y++) {
+ w = width;
+ while (w >= 8) {
+ v = *p++;
+ q[0] = q[1] = q[2] = -(v >> 7); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 6) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 5) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 4) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 3) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 2) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 1) & 1); q += 3;
+ q[0] = q[1] = q[2] = -((v >> 0) & 1); q += 3;
+ w -= 8;
+ }
+ if (w > 0) {
+ v = *p++;
+ do {
+ q[0] = q[1] = q[2] = -((v >> 7) & 1); q += 3;
+ v <<= 1;
+ } while (--w);
+ }
+ p += src_wrap;
+ q += dst_wrap;
+ }
+}
+
+typedef struct ConvertEntry {
+ void (*convert)(AVPicture *dst, AVPicture *src, int width, int height);
+} ConvertEntry;
+
+/* add each new convertion function in this table */
+/* constraints;
+ - all non YUV modes must convert at least to and from PIX_FMT_RGB24
+*/
+static ConvertEntry convert_table[PIX_FMT_NB][PIX_FMT_NB] = {
+ [PIX_FMT_YUV420P] = {
+ [PIX_FMT_RGB555] = {
+ convert: yuv420p_to_rgb555
+ },
+ [PIX_FMT_RGB565] = {
+ convert: yuv420p_to_rgb565
+ },
+ [PIX_FMT_BGR24] = {
+ convert: yuv420p_to_bgr24
+ },
+ [PIX_FMT_RGB24] = {
+ convert: yuv420p_to_rgb24
+ },
+ [PIX_FMT_RGBA32] = {
+ convert: yuv420p_to_rgba32
+ },
+ },
+ [PIX_FMT_YUV422P] = {
+ [PIX_FMT_RGB555] = {
+ convert: yuv422p_to_rgb555
+ },
+ [PIX_FMT_RGB565] = {
+ convert: yuv422p_to_rgb565
+ },
+ [PIX_FMT_BGR24] = {
+ convert: yuv422p_to_bgr24
+ },
+ [PIX_FMT_RGB24] = {
+ convert: yuv422p_to_rgb24
+ },
+ [PIX_FMT_RGBA32] = {
+ convert: yuv422p_to_rgba32
+ },
+ },
+ [PIX_FMT_YUV422] = {
+ [PIX_FMT_YUV420P] = {
+ convert: yuv422_to_yuv420p,
+ },
+ },
+
+ [PIX_FMT_RGB24] = {
+ [PIX_FMT_YUV420P] = {
+ convert: rgb24_to_yuv420p
+ },
+ [PIX_FMT_RGB565] = {
+ convert: rgb24_to_rgb565
+ },
+ [PIX_FMT_RGB555] = {
+ convert: rgb24_to_rgb555
+ },
+ [PIX_FMT_GRAY8] = {
+ convert: rgb24_to_gray
+ },
+ },
+ [PIX_FMT_RGBA32] = {
+ [PIX_FMT_YUV420P] = {
+ convert: rgba32_to_yuv420p
+ },
+ },
+ [PIX_FMT_BGR24] = {
+ [PIX_FMT_YUV420P] = {
+ convert: bgr24_to_yuv420p
+ },
+ },
+ [PIX_FMT_RGB555] = {
+ [PIX_FMT_YUV420P] = {
+ convert: rgb555_to_yuv420p
+ },
+ },
+ [PIX_FMT_RGB565] = {
+ [PIX_FMT_YUV420P] = {
+ convert: rgb565_to_yuv420p
+ },
+ },
+ [PIX_FMT_GRAY8] = {
+ [PIX_FMT_RGB24] = {
+ convert: gray_to_rgb24
+ },
+ },
+ [PIX_FMT_MONOWHITE] = {
+ [PIX_FMT_RGB24] = {
+ convert: monowhite_to_rgb24
+ },
+ },
+ [PIX_FMT_MONOBLACK] = {
+ [PIX_FMT_RGB24] = {
+ convert: monoblack_to_rgb24
+ },
+ },
+};
+
+static int avpicture_alloc(AVPicture *picture,
+ int pix_fmt, int width, int height)
+{
+ int size;
+ void *ptr;
+
+ size = avpicture_get_size(pix_fmt, width, height);
+ if (size < 0)
+ goto fail;
+ ptr = av_malloc(size);
+ if (!ptr)
+ goto fail;
+ avpicture_fill(picture, ptr, pix_fmt, width, height);
+ return 0;
+ fail:
+ memset(picture, 0, sizeof(AVPicture));
+ return -1;
+}
+
+static void avpicture_free(AVPicture *picture)
+{
+ free(picture->data[0]);
+}
+
/* XXX: always use linesize. Return -1 if not supported */
int img_convert(AVPicture *dst, int dst_pix_fmt,
- AVPicture *src, int pix_fmt,
- int width, int height)
+ AVPicture *src, int src_pix_fmt,
+ int src_width, int src_height)
{
- int i;
+ int i, ret, dst_width, dst_height;
+ PixFmtInfo *src_pix, *dst_pix;
+ ConvertEntry *ce;
+ AVPicture tmp1, *tmp = &tmp1;
- if (dst_pix_fmt == pix_fmt) {
- switch(pix_fmt) {
- case PIX_FMT_YUV420P:
- for(i=0;i<3;i++) {
- if (i == 1) {
- width >>= 1;
- height >>= 1;
- }
- img_copy(dst->data[i], dst->linesize[i],
- src->data[i], src->linesize[i],
- width, height);
+ if (src_pix_fmt < 0 || src_pix_fmt >= PIX_FMT_NB ||
+ dst_pix_fmt < 0 || dst_pix_fmt >= PIX_FMT_NB)
+ return -1;
+ if (src_width <= 0 || src_height <= 0)
+ return 0;
+
+ dst_width = src_width;
+ dst_height = src_height;
+
+ dst_pix = &pix_fmt_info[dst_pix_fmt];
+ src_pix = &pix_fmt_info[src_pix_fmt];
+ if (src_pix_fmt == dst_pix_fmt) {
+ /* same format: just copy */
+ for(i = 0; i < dst_pix->nb_components; i++) {
+ int w, h;
+ w = dst_width;
+ h = dst_height;
+ if (dst_pix->is_yuv && (i == 1 || i == 2)) {
+ w >>= dst_pix->x_chroma_shift;
+ h >>= dst_pix->y_chroma_shift;
}
- break;
- default:
- return -1;
+ img_copy(dst->data[i], dst->linesize[i],
+ src->data[i], src->linesize[i],
+ w, h);
}
- } else if (dst_pix_fmt == PIX_FMT_YUV420P) {
-
- switch(pix_fmt) {
- case PIX_FMT_YUV411P:
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- width, height);
- conv411(dst->data[1], dst->linesize[1],
- src->data[1], src->linesize[1],
- width / 4, height);
- conv411(dst->data[2], dst->linesize[2],
- src->data[2], src->linesize[2],
- width / 4, height);
- break;
- case PIX_FMT_YUV410P:
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- width, height);
- grow22(dst->data[1], dst->linesize[1],
- src->data[1], src->linesize[1],
- width/2, height/2);
- grow22(dst->data[2], dst->linesize[2],
- src->data[2], src->linesize[2],
- width/2, height/2);
- break;
- case PIX_FMT_YUV420P:
- for(i=0;i<3;i++) {
- img_copy(dst->data[i], dst->linesize[i],
- src->data[i], src->linesize[i],
- width, height);
- }
- break;
- case PIX_FMT_YUV422P:
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- width, height);
- width >>= 1;
- height >>= 1;
- for(i=1;i<3;i++) {
- shrink2(dst->data[i], dst->linesize[i],
- src->data[i], src->linesize[i],
- width, height);
- }
- break;
- case PIX_FMT_YUV444P:
- img_copy(dst->data[0], dst->linesize[0],
- src->data[0], src->linesize[0],
- width, height);
- width >>= 1;
- height >>= 1;
- for(i=1;i<3;i++) {
- shrink22(dst->data[i], dst->linesize[i],
- src->data[i], src->linesize[i],
- width, height);
- }
- break;
- case PIX_FMT_YUV422:
- yuv422_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_RGB24:
- rgb24_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_RGBA32:
- rgba32_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_BGR24:
- bgr24_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_BGRA32:
- bgra32_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_RGB565:
- rgb565_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_RGB555:
- rgb555_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
-/* case PIX_FMT_RGB5551:
- rgb5551_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;*/
- case PIX_FMT_BGR565:
- bgr565_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_BGR555:
- bgr555_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
-/* case PIX_FMT_GBR565:
- gbr565_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;
- case PIX_FMT_GBR555:
- gbr555_to_yuv420p(dst->data[0], dst->data[1], dst->data[2],
- src->data[0], width, height);
- break;*/
- default:
- return -1;
- }
- } else if (dst_pix_fmt == PIX_FMT_RGB24) {
- switch(pix_fmt) {
- case PIX_FMT_YUV420P:
- yuv420p_to_rgb24(dst, src, width, height);
- break;
- case PIX_FMT_YUV422P:
- yuv422p_to_rgb24(dst, src, width, height);
- break;
- default:
- return -1;
- }
- } else if (dst_pix_fmt == PIX_FMT_RGBA32) {
- switch(pix_fmt) {
- case PIX_FMT_YUV420P:
- yuv420p_to_rgba32(dst, src, width, height);
- break;
- default:
+ return 0;
+ }
+
+ ce = &convert_table[src_pix_fmt][dst_pix_fmt];
+ if (ce->convert) {
+ /* specific convertion routine */
+ ce->convert(dst, src, dst_width, dst_height);
+ return 0;
+ }
+
+ /* if both format are not YUV, try to use RGB24 as common
+ format */
+ if (!dst_pix->is_yuv && !src_pix->is_yuv) {
+ if (avpicture_alloc(tmp, PIX_FMT_RGB24, dst_width, dst_height) < 0)
return -1;
+ ret = -1;
+ if (img_convert(tmp, PIX_FMT_RGB24,
+ src, src_pix_fmt, src_width, src_height) < 0)
+ goto fail1;
+ if (img_convert(dst, dst_pix_fmt,
+ tmp, PIX_FMT_RGB24, dst_width, dst_height) < 0)
+ goto fail1;
+ ret = 0;
+ fail1:
+ avpicture_free(tmp);
+ return ret;
+ }
+
+ /* gray to YUV */
+ if (dst_pix->is_yuv && src_pix_fmt == PIX_FMT_GRAY8) {
+ int w, h, y;
+ uint8_t *d;
+
+ img_copy(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height);
+ /* fill U and V with 128 */
+ w = dst_width;
+ h = dst_height;
+ w >>= dst_pix->x_chroma_shift;
+ h >>= dst_pix->y_chroma_shift;
+ for(i = 1; i <= 2; i++) {
+ d = dst->data[i];
+ for(y = 0; y<h; y++) {
+ memset(d, 128, 0);
+ d += dst->linesize[i];
+ }
}
- } else if (dst_pix_fmt == PIX_FMT_BGRA32) {
- switch(pix_fmt) {
- case PIX_FMT_YUV420P:
- yuv420p_to_bgra32(dst, src, width, height);
- break;
- default:
+ return 0;
+ }
+
+ /* YUV to gray */
+ if (src_pix->is_yuv && dst_pix_fmt == PIX_FMT_GRAY8) {
+ img_copy(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height);
+ return 0;
+ }
+
+ /* YUV to YUV */
+ if (dst_pix->is_yuv && src_pix->is_yuv) {
+ int x_shift, y_shift, w, h;
+ void (*resize_func)(UINT8 *dst, int dst_wrap,
+ UINT8 *src, int src_wrap,
+ int width, int height);
+
+ /* compute chroma size of the smallest dimensions */
+ w = dst_width;
+ h = dst_height;
+ if (dst_pix->x_chroma_shift >= src_pix->x_chroma_shift)
+ w >>= dst_pix->x_chroma_shift;
+ else
+ w >>= src_pix->x_chroma_shift;
+ if (dst_pix->y_chroma_shift >= src_pix->y_chroma_shift)
+ h >>= dst_pix->y_chroma_shift;
+ else
+ h >>= src_pix->y_chroma_shift;
+
+ x_shift = (dst_pix->x_chroma_shift - src_pix->x_chroma_shift);
+ y_shift = (dst_pix->y_chroma_shift - src_pix->y_chroma_shift);
+ if (x_shift == 0 && y_shift == 0) {
+ resize_func = img_copy; /* should never happen */
+ } else if (x_shift == 0 && y_shift == 1) {
+ resize_func = shrink2;
+ } else if (x_shift == 1 && y_shift == 1) {
+ resize_func = shrink22;
+ } else if (x_shift == -1 && y_shift == -1) {
+ resize_func = grow22;
+ } else if (x_shift == -1 && y_shift == 1) {
+ resize_func = conv411;
+ } else {
+ /* currently not handled */
return -1;
}
- } else {
- return -1;
+
+ img_copy(dst->data[0], dst->linesize[0],
+ src->data[0], src->linesize[0],
+ dst_width, dst_height);
+ for(i = 1;i <= 2; i++)
+ resize_func(dst->data[1], dst->linesize[1],
+ src->data[1], src->linesize[1],
+ w, h);
}
- return 0;
+
+ /* cannot convert yet */
+
+ return -1;
}
--
Libav/FFmpeg packaging
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