/* * Misc image convertion routines * 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 * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library 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 * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; if not, write to the Free Software * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "avcodec.h" #include "dsputil.h" #ifdef USE_FASTMEMCPY #include "fastmemcpy.h" #endif #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(AVPicture *dst, AVPicture *src, int width, int height) { UINT8 *lum, *cb, *cr; int x, y; const UINT8 *p; lum = dst->data[0]; cb = dst->data[1]; cr = dst->data[2]; p = src->data[0]; for(y=0;y 1x1 */ static void shrink2(UINT8 *dst, int dst_wrap, UINT8 *src, int src_wrap, int width, int height) { int w; UINT8 *s1, *s2, *d; for(;height > 0; height--) { s1 = src; s2 = s1 + src_wrap; d = dst; for(w = width;w >= 4; w-=4) { d[0] = (s1[0] + s2[0]) >> 1; d[1] = (s1[1] + s2[1]) >> 1; d[2] = (s1[2] + s2[2]) >> 1; d[3] = (s1[3] + s2[3]) >> 1; s1 += 4; s2 += 4; d += 4; } for(;w > 0; w--) { d[0] = (s1[0] + s2[0]) >> 1; s1++; s2++; d++; } src += 2 * src_wrap; dst += dst_wrap; } } /* 2x2 -> 1x1 */ static void shrink22(UINT8 *dst, int dst_wrap, UINT8 *src, int src_wrap, int width, int height) { int w; UINT8 *s1, *s2, *d; for(;height > 0; height--) { s1 = src; s2 = s1 + src_wrap; d = dst; for(w = width;w >= 4; w-=4) { d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 1; d[1] = (s1[2] + s1[3] + s2[2] + s2[3] + 2) >> 1; d[2] = (s1[4] + s1[5] + s2[4] + s2[5] + 2) >> 1; d[3] = (s1[6] + s1[7] + s2[6] + s2[7] + 2) >> 1; s1 += 8; s2 += 8; d += 4; } for(;w > 0; w--) { d[0] = (s1[0] + s1[1] + s2[0] + s2[1] + 2) >> 1; s1 += 2; s2 += 2; d++; } src += 2 * src_wrap; dst += dst_wrap; } } /* 1x1 -> 2x2 */ static void grow22(UINT8 *dst, int dst_wrap, UINT8 *src, int src_wrap, int width, int height) { int w; UINT8 *s1, *d; for(;height > 0; height--) { s1 = src; d = dst; for(w = width;w >= 4; w-=4) { d[1] = d[0] = s1[0]; d[3] = d[2] = s1[1]; s1 += 2; d += 4; } for(;w > 0; w--) { d[0] = s1[0]; s1 ++; d++; } if (height%2) src += src_wrap; dst += dst_wrap; } } /* 1x2 -> 2x1 */ static void conv411(UINT8 *dst, int dst_wrap, UINT8 *src, int src_wrap, int width, int height) { int w, c; UINT8 *s1, *s2, *d; for(;height > 0; height--) { s1 = src; s2 = src + src_wrap; d = dst; for(w = width;w > 0; w--) { c = (s1[0] + s2[0]) >> 1; d[0] = c; d[1] = c; s1++; s2++; d += 2; } src += src_wrap * 2; dst += dst_wrap; } } static void img_copy(UINT8 *dst, int dst_wrap, UINT8 *src, int src_wrap, int width, int height) { for(;height > 0; height--) { memcpy(dst, src, width); dst += dst_wrap; src += src_wrap; } } #define SCALE_BITS 10 #define C_Y (76309 >> (16 - SCALE_BITS)) #define C_RV (117504 >> (16 - SCALE_BITS)) #define C_BU (138453 >> (16 - SCALE_BITS)) #define C_GU (13954 >> (16 - SCALE_BITS)) #define C_GV (34903 >> (16 - SCALE_BITS)) #define YUV_TO_RGB2(r, g, b, y1)\ {\ y = (y1 - 16) * C_Y;\ r = cm[(y + r_add) >> SCALE_BITS];\ g = cm[(y + g_add) >> SCALE_BITS];\ b = cm[(y + b_add) >> SCALE_BITS];\ } /* XXX: no chroma interpolating is done */ #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) { int mask; mask = (1 << n) - 1; return (a & (0xff & ~mask)) | ((-((a >> n) & 1)) & mask); } /* 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; } p += src_wrap; q += dst_wrap; } } /* NOTE: we also add a dummy alpha bit */ static void rgb24_to_rgb555(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) << 10) | ((g >> 3) << 5) | (b >> 3) | 0x8000; q += 2; p += 3; } p += src_wrap; q += dst_wrap; } } static void rgb24_to_gray(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] - width; for(y=0;y> SCALEBITS; q++; p += 3; } p += src_wrap; q += dst_wrap; } } static void gray_to_rgb24(AVPicture *dst, AVPicture *src, int width, int height) { 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; 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); } 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 src_pix_fmt, int src_width, int src_height) { int i, ret, dst_width, dst_height; PixFmtInfo *src_pix, *dst_pix; ConvertEntry *ce; AVPicture tmp1, *tmp = &tmp1; 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; } img_copy(dst->data[i], dst->linesize[i], src->data[i], src->linesize[i], w, h); } 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]; } } 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; } 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); } /* cannot convert yet */ return -1; } #ifdef HAVE_MMX #define DEINT_INPLACE_LINE_LUM \ movd_m2r(lum_m4[0],mm0);\ movd_m2r(lum_m3[0],mm1);\ movd_m2r(lum_m2[0],mm2);\ movd_m2r(lum_m1[0],mm3);\ movd_m2r(lum[0],mm4);\ punpcklbw_r2r(mm7,mm0);\ movd_r2m(mm2,lum_m4[0]);\ punpcklbw_r2r(mm7,mm1);\ punpcklbw_r2r(mm7,mm2);\ punpcklbw_r2r(mm7,mm3);\ punpcklbw_r2r(mm7,mm4);\ paddw_r2r(mm3,mm1);\ psllw_i2r(1,mm2);\ paddw_r2r(mm4,mm0);\ psllw_i2r(2,mm1);\ paddw_r2r(mm6,mm2);\ paddw_r2r(mm2,mm1);\ psubusw_r2r(mm0,mm1);\ psrlw_i2r(3,mm1);\ packuswb_r2r(mm7,mm1);\ movd_r2m(mm1,lum_m2[0]); #define DEINT_LINE_LUM \ movd_m2r(lum_m4[0],mm0);\ movd_m2r(lum_m3[0],mm1);\ movd_m2r(lum_m2[0],mm2);\ movd_m2r(lum_m1[0],mm3);\ movd_m2r(lum[0],mm4);\ punpcklbw_r2r(mm7,mm0);\ punpcklbw_r2r(mm7,mm1);\ punpcklbw_r2r(mm7,mm2);\ punpcklbw_r2r(mm7,mm3);\ punpcklbw_r2r(mm7,mm4);\ paddw_r2r(mm3,mm1);\ psllw_i2r(1,mm2);\ paddw_r2r(mm4,mm0);\ psllw_i2r(2,mm1);\ paddw_r2r(mm6,mm2);\ paddw_r2r(mm2,mm1);\ psubusw_r2r(mm0,mm1);\ psrlw_i2r(3,mm1);\ packuswb_r2r(mm7,mm1);\ movd_r2m(mm1,dst[0]); #endif /* filter parameters: [-1 4 2 4 -1] // 8 */ static void deinterlace_line(UINT8 *dst, UINT8 *lum_m4, UINT8 *lum_m3, UINT8 *lum_m2, UINT8 *lum_m1, UINT8 *lum, int size) { #ifndef HAVE_MMX UINT8 *cm = cropTbl + MAX_NEG_CROP; int sum; for(;size > 0;size--) { sum = -lum_m4[0]; sum += lum_m3[0] << 2; sum += lum_m2[0] << 1; sum += lum_m1[0] << 2; sum += -lum[0]; dst[0] = cm[(sum + 4) >> 3]; lum_m4++; lum_m3++; lum_m2++; lum_m1++; lum++; dst++; } #else for (;size > 3; size-=4) { DEINT_LINE_LUM lum_m4+=4; lum_m3+=4; lum_m2+=4; lum_m1+=4; lum+=4; dst+=4; } #endif } static void deinterlace_line_inplace(UINT8 *lum_m4, UINT8 *lum_m3, UINT8 *lum_m2, UINT8 *lum_m1, UINT8 *lum, int size) { #ifndef HAVE_MMX UINT8 *cm = cropTbl + MAX_NEG_CROP; int sum; for(;size > 0;size--) { sum = -lum_m4[0]; sum += lum_m3[0] << 2; sum += lum_m2[0] << 1; lum_m4[0]=lum_m2[0]; sum += lum_m1[0] << 2; sum += -lum[0]; lum_m2[0] = cm[(sum + 4) >> 3]; lum_m4++; lum_m3++; lum_m2++; lum_m1++; lum++; } #else for (;size > 3; size-=4) { DEINT_INPLACE_LINE_LUM lum_m4+=4; lum_m3+=4; lum_m2+=4; lum_m1+=4; lum+=4; } #endif } /* deinterlacing : 2 temporal taps, 3 spatial taps linear filter. The top field is copied as is, but the bottom field is deinterlaced against the top field. */ static void deinterlace_bottom_field(UINT8 *dst, int dst_wrap, UINT8 *src1, int src_wrap, int width, int height) { UINT8 *src_m2, *src_m1, *src_0, *src_p1, *src_p2; int y; src_m2 = src1; src_m1 = src1; src_0=&src_m1[src_wrap]; src_p1=&src_0[src_wrap]; src_p2=&src_p1[src_wrap]; for(y=0;y<(height-2);y+=2) { memcpy(dst,src_m1,width); dst += dst_wrap; deinterlace_line(dst,src_m2,src_m1,src_0,src_p1,src_p2,width); src_m2 = src_0; src_m1 = src_p1; src_0 = src_p2; src_p1 += 2*src_wrap; src_p2 += 2*src_wrap; dst += dst_wrap; } memcpy(dst,src_m1,width); dst += dst_wrap; /* do last line */ deinterlace_line(dst,src_m2,src_m1,src_0,src_0,src_0,width); } static void deinterlace_bottom_field_inplace(UINT8 *src1, int src_wrap, int width, int height) { UINT8 *src_m1, *src_0, *src_p1, *src_p2; int y; UINT8 *buf; buf = (UINT8*)av_malloc(width); src_m1 = src1; memcpy(buf,src_m1,width); src_0=&src_m1[src_wrap]; src_p1=&src_0[src_wrap]; src_p2=&src_p1[src_wrap]; for(y=0;y<(height-2);y+=2) { deinterlace_line_inplace(buf,src_m1,src_0,src_p1,src_p2,width); src_m1 = src_p1; src_0 = src_p2; src_p1 += 2*src_wrap; src_p2 += 2*src_wrap; } /* do last line */ deinterlace_line_inplace(buf,src_m1,src_0,src_0,src_0,width); av_free(buf); } /* deinterlace - if not supported return -1 */ int avpicture_deinterlace(AVPicture *dst, AVPicture *src, int pix_fmt, int width, int height) { int i; if (pix_fmt != PIX_FMT_YUV420P && pix_fmt != PIX_FMT_YUV422P && pix_fmt != PIX_FMT_YUV444P) return -1; if ((width & 3) != 0 || (height & 3) != 0) return -1; #ifdef HAVE_MMX { mmx_t rounder; rounder.uw[0]=4; rounder.uw[1]=4; rounder.uw[2]=4; rounder.uw[3]=4; pxor_r2r(mm7,mm7); movq_m2r(rounder,mm6); } #endif for(i=0;i<3;i++) { if (i == 1) { switch(pix_fmt) { case PIX_FMT_YUV420P: width >>= 1; height >>= 1; break; case PIX_FMT_YUV422P: width >>= 1; break; default: break; } } if (src == dst) { deinterlace_bottom_field_inplace(src->data[i], src->linesize[i], width, height); } else { deinterlace_bottom_field(dst->data[i],dst->linesize[i], src->data[i], src->linesize[i], width, height); } } #ifdef HAVE_MMX emms(); #endif return 0; } #undef FIX