mirror of https://github.com/FFmpeg/FFmpeg.git
Move the color source code from vf_pad.c to vsrc_color.c. Signed-off-by: Michael Niedermayer <michaelni@gmx.at>oldabi
Stefano Sabatini
14 years ago
committed by
Michael Niedermayer
parent
bcfd9e821b
commit
fd0b42cce0
3 changed files with 168 additions and 129 deletions
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/*
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* Copyright (c) 2010 Stefano Sabatini |
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* |
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* This file is part of FFmpeg. |
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* |
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* FFmpeg is free software; you can redistribute it and/or |
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* modify it under the terms of the GNU Lesser General Public |
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* License as published by the Free Software Foundation; either |
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* version 2.1 of the License, or (at your option) any later version. |
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* |
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* FFmpeg is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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* Lesser General Public License for more details. |
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* |
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* You should have received a copy of the GNU Lesser General Public |
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* License along with FFmpeg; if not, write to the Free Software |
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
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*/ |
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#include "avfilter.h" |
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#include "libavutil/pixdesc.h" |
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#include "libavutil/colorspace.h" |
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#include "libavutil/imgutils.h" |
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#include "libavutil/parseutils.h" |
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#include "drawutils.h" |
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typedef struct { |
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int w, h; |
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uint8_t color[4]; |
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AVRational time_base; |
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uint8_t *line[4]; |
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int line_step[4]; |
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int hsub, vsub; ///< chroma subsampling values
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uint64_t pts; |
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} ColorContext; |
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static av_cold int color_init(AVFilterContext *ctx, const char *args, void *opaque) |
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{ |
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ColorContext *color = ctx->priv; |
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char color_string[128] = "black"; |
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char frame_size [128] = "320x240"; |
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char frame_rate [128] = "25"; |
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AVRational frame_rate_q; |
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int ret; |
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if (args) |
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sscanf(args, "%127[^:]:%127[^:]:%127s", color_string, frame_size, frame_rate); |
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if (av_parse_video_size(&color->w, &color->h, frame_size) < 0) { |
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av_log(ctx, AV_LOG_ERROR, "Invalid frame size: %s\n", frame_size); |
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return AVERROR(EINVAL); |
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} |
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if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 || |
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frame_rate_q.den <= 0 || frame_rate_q.num <= 0) { |
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av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", frame_rate); |
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return AVERROR(EINVAL); |
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} |
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color->time_base.num = frame_rate_q.den; |
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color->time_base.den = frame_rate_q.num; |
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if ((ret = av_parse_color(color->color, color_string, -1, ctx)) < 0) |
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return ret; |
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return 0; |
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} |
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static av_cold void color_uninit(AVFilterContext *ctx) |
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{ |
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ColorContext *color = ctx->priv; |
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int i; |
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for (i = 0; i < 4; i++) { |
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av_freep(&color->line[i]); |
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color->line_step[i] = 0; |
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} |
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} |
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static int query_formats(AVFilterContext *ctx) |
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{ |
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static const enum PixelFormat pix_fmts[] = { |
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PIX_FMT_ARGB, PIX_FMT_RGBA, |
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PIX_FMT_ABGR, PIX_FMT_BGRA, |
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PIX_FMT_RGB24, PIX_FMT_BGR24, |
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PIX_FMT_YUV444P, PIX_FMT_YUV422P, |
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PIX_FMT_YUV420P, PIX_FMT_YUV411P, |
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PIX_FMT_YUV410P, PIX_FMT_YUV440P, |
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PIX_FMT_YUVJ444P, PIX_FMT_YUVJ422P, |
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PIX_FMT_YUVJ420P, PIX_FMT_YUVJ440P, |
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PIX_FMT_YUVA420P, |
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PIX_FMT_NONE |
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}; |
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avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts)); |
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return 0; |
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} |
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static int color_config_props(AVFilterLink *inlink) |
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{ |
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AVFilterContext *ctx = inlink->src; |
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ColorContext *color = ctx->priv; |
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uint8_t rgba_color[4]; |
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int is_packed_rgba; |
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const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format]; |
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color->hsub = pix_desc->log2_chroma_w; |
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color->vsub = pix_desc->log2_chroma_h; |
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color->w &= ~((1 << color->hsub) - 1); |
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color->h &= ~((1 << color->vsub) - 1); |
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if (av_image_check_size(color->w, color->h, 0, ctx) < 0) |
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return AVERROR(EINVAL); |
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memcpy(rgba_color, color->color, sizeof(rgba_color)); |
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ff_fill_line_with_color(color->line, color->line_step, color->w, color->color, |
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inlink->format, rgba_color, &is_packed_rgba, NULL); |
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av_log(ctx, AV_LOG_INFO, "w:%d h:%d r:%d/%d color:0x%02x%02x%02x%02x[%s]\n", |
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color->w, color->h, color->time_base.den, color->time_base.num, |
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color->color[0], color->color[1], color->color[2], color->color[3], |
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is_packed_rgba ? "rgba" : "yuva"); |
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inlink->w = color->w; |
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inlink->h = color->h; |
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return 0; |
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} |
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static int color_request_frame(AVFilterLink *link) |
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{ |
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ColorContext *color = link->src->priv; |
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AVFilterBufferRef *picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, color->w, color->h); |
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picref->video->pixel_aspect = (AVRational) {1, 1}; |
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picref->pts = av_rescale_q(color->pts++, color->time_base, AV_TIME_BASE_Q); |
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picref->pos = 0; |
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avfilter_start_frame(link, avfilter_ref_buffer(picref, ~0)); |
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ff_draw_rectangle(picref->data, picref->linesize, |
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color->line, color->line_step, color->hsub, color->vsub, |
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0, 0, color->w, color->h); |
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avfilter_draw_slice(link, 0, color->h, 1); |
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avfilter_end_frame(link); |
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avfilter_unref_buffer(picref); |
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return 0; |
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} |
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AVFilter avfilter_vsrc_color = { |
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.name = "color", |
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.description = NULL_IF_CONFIG_SMALL("Provide an uniformly colored input, syntax is: [color[:size[:rate]]]"), |
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.priv_size = sizeof(ColorContext), |
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.init = color_init, |
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.uninit = color_uninit, |
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.query_formats = query_formats, |
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.inputs = (AVFilterPad[]) {{ .name = NULL}}, |
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.outputs = (AVFilterPad[]) {{ .name = "default", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.request_frame = color_request_frame, |
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.config_props = color_config_props }, |
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{ .name = NULL}}, |
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}; |
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