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![Michael Niedermayer](/assets/img/avatar_default.png)
* qatar/master: (40 commits) H.264: template left MB handling H.264: faster fill_decode_caches H.264: faster write_back_* H.264: faster fill_filter_caches H.264: make filter_mb_fast support the case of unavailable top mb Do not include log.h in avutil.h Do not include pixfmt.h in avutil.h Do not include rational.h in avutil.h Do not include mathematics.h in avutil.h Do not include intfloat_readwrite.h in avutil.h Remove return statements following infinite loops without break RTSP: Doxygen comment cleanup doxygen: Escape '\' in Doxygen documentation. md5: cosmetics md5: use AV_WL32 to write result md5: add fate test md5: include correct headers md5: fix test program doxygen: Drop array size declarations from Doxygen parameter names. doxygen: Fix parameter names to match the function prototypes. ... Conflicts: libavcodec/x86/dsputil_mmx.c libavformat/flvenc.c libavformat/oggenc.c libavformat/wtv.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
175 lines
5.5 KiB
C
175 lines
5.5 KiB
C
/*
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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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/**
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* @file
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* color source
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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/mathematics.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_pixel_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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inlink->time_base = color->time_base;
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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->sample_aspect_ratio = (AVRational) {1, 1};
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picref->pts = color->pts++;
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picref->pos = -1;
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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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