From 524c6b6342e4d8bcc4dcc582b4056003d165eb20 Mon Sep 17 00:00:00 2001 From: Fabrice Bellard Date: Sat, 11 Jan 2003 00:08:48 +0000 Subject: simplified code (need automatic testing) - added primitive new format support. Originally committed as revision 1431 to svn://svn.ffmpeg.org/ffmpeg/trunk --- libavcodec/imgconvert.c | 1476 ++++++++++++++++++++++++++--------------------- 1 file changed, 834 insertions(+), 642 deletions(-) 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> 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> 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> 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> 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> 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> 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> 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> 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> 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;ydata[0]; + src_wrap = src->linesize[0] - ((width + 7) >> 3); + + q = dst->data[0]; + dst_wrap = dst->linesize[0] - 3 * width; + + for(y=0;y= 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= 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; ylinesize[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; } -- cgit v1.1