| /* |
| * This file is part of FFmpeg. |
| * |
| * FFmpeg 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 2.1 of the License, or (at your option) any later version. |
| * |
| * FFmpeg 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 FFmpeg; if not, write to the Free Software |
| * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| */ |
| |
| #include "libavutil/avutil.h" |
| #include "libavutil/colorspace.h" |
| #include "libavutil/pixdesc.h" |
| #include "drawutils.h" |
| |
| enum { RED = 0, GREEN, BLUE, ALPHA }; |
| |
| int ff_fill_line_with_color(uint8_t *line[4], int pixel_step[4], int w, uint8_t dst_color[4], |
| enum PixelFormat pix_fmt, uint8_t rgba_color[4], |
| int *is_packed_rgba, uint8_t rgba_map_ptr[4]) |
| { |
| uint8_t rgba_map[4] = {0}; |
| int i; |
| const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[pix_fmt]; |
| int hsub = pix_desc->log2_chroma_w; |
| |
| *is_packed_rgba = 1; |
| switch (pix_fmt) { |
| case PIX_FMT_ARGB: rgba_map[ALPHA] = 0; rgba_map[RED ] = 1; rgba_map[GREEN] = 2; rgba_map[BLUE ] = 3; break; |
| case PIX_FMT_ABGR: rgba_map[ALPHA] = 0; rgba_map[BLUE ] = 1; rgba_map[GREEN] = 2; rgba_map[RED ] = 3; break; |
| case PIX_FMT_RGBA: |
| case PIX_FMT_RGB24: rgba_map[RED ] = 0; rgba_map[GREEN] = 1; rgba_map[BLUE ] = 2; rgba_map[ALPHA] = 3; break; |
| case PIX_FMT_BGRA: |
| case PIX_FMT_BGR24: rgba_map[BLUE ] = 0; rgba_map[GREEN] = 1; rgba_map[RED ] = 2; rgba_map[ALPHA] = 3; break; |
| default: |
| *is_packed_rgba = 0; |
| } |
| |
| if (*is_packed_rgba) { |
| pixel_step[0] = (av_get_bits_per_pixel(pix_desc))>>3; |
| for (i = 0; i < 4; i++) |
| dst_color[rgba_map[i]] = rgba_color[i]; |
| |
| line[0] = av_malloc(w * pixel_step[0]); |
| for (i = 0; i < w; i++) |
| memcpy(line[0] + i * pixel_step[0], dst_color, pixel_step[0]); |
| if (rgba_map_ptr) |
| memcpy(rgba_map_ptr, rgba_map, sizeof(rgba_map[0]) * 4); |
| } else { |
| int plane; |
| |
| dst_color[0] = RGB_TO_Y_CCIR(rgba_color[0], rgba_color[1], rgba_color[2]); |
| dst_color[1] = RGB_TO_U_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0); |
| dst_color[2] = RGB_TO_V_CCIR(rgba_color[0], rgba_color[1], rgba_color[2], 0); |
| dst_color[3] = rgba_color[3]; |
| |
| for (plane = 0; plane < 4; plane++) { |
| int line_size; |
| int hsub1 = (plane == 1 || plane == 2) ? hsub : 0; |
| |
| pixel_step[plane] = 1; |
| line_size = (w >> hsub1) * pixel_step[plane]; |
| line[plane] = av_malloc(line_size); |
| memset(line[plane], dst_color[plane], line_size); |
| } |
| } |
| |
| return 0; |
| } |
| |
| void ff_draw_rectangle(uint8_t *dst[4], int dst_linesize[4], |
| uint8_t *src[4], int pixelstep[4], |
| int hsub, int vsub, int x, int y, int w, int h) |
| { |
| int i, plane; |
| uint8_t *p; |
| |
| for (plane = 0; plane < 4 && dst[plane]; plane++) { |
| int hsub1 = plane == 1 || plane == 2 ? hsub : 0; |
| int vsub1 = plane == 1 || plane == 2 ? vsub : 0; |
| |
| p = dst[plane] + (y >> vsub1) * dst_linesize[plane]; |
| for (i = 0; i < (h >> vsub1); i++) { |
| memcpy(p + (x >> hsub1) * pixelstep[plane], |
| src[plane], (w >> hsub1) * pixelstep[plane]); |
| p += dst_linesize[plane]; |
| } |
| } |
| } |
| |
| void ff_copy_rectangle(uint8_t *dst[4], int dst_linesize[4], |
| uint8_t *src[4], int src_linesize[4], int pixelstep[4], |
| int hsub, int vsub, int x, int y, int y2, int w, int h) |
| { |
| int i, plane; |
| uint8_t *p; |
| |
| for (plane = 0; plane < 4 && dst[plane]; plane++) { |
| int hsub1 = plane == 1 || plane == 2 ? hsub : 0; |
| int vsub1 = plane == 1 || plane == 2 ? vsub : 0; |
| |
| p = dst[plane] + (y >> vsub1) * dst_linesize[plane]; |
| for (i = 0; i < (h >> vsub1); i++) { |
| memcpy(p + (x >> hsub1) * pixelstep[plane], |
| src[plane] + src_linesize[plane]*(i+(y2>>vsub1)), (w >> hsub1) * pixelstep[plane]); |
| p += dst_linesize[plane]; |
| } |
| } |
| } |