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lavfi: put color source in a dedicated file

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Move the color source code from vf_pad.c to vsrc_color.c.

Signed-off-by: Mans Rullgard <mans@mansr.com>
This commit is contained in:
Stefano Sabatini
2011-02-20 22:42:24 +00:00
committed by Mans Rullgard
parent 5ad06110e0
commit c8c0189d62
3 changed files with 168 additions and 129 deletions
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128
libavfilter/vf_pad.c
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@ -53,8 +53,6 @@ static int query_formats(AVFilterContext *ctx)
return 0;
}
#if CONFIG_PAD_FILTER
typedef struct {
int w, h; ///< output dimensions, a value of 0 will result in the input size
int x, y; ///< offsets of the input area with respect to the padded area
@ -330,129 +328,3 @@ AVFilter avfilter_vf_pad = {
.config_props = config_output, },
{ .name = NULL}},
};
#endif /* CONFIG_PAD_FILTER */
#if CONFIG_COLOR_FILTER
typedef struct {
int w, h;
uint8_t color[4];
AVRational time_base;
uint8_t *line[4];
int line_step[4];
int hsub, vsub; ///< chroma subsampling values
uint64_t pts;
} ColorContext;
static av_cold int color_init(AVFilterContext *ctx, const char *args, void *opaque)
{
ColorContext *color = ctx->priv;
char color_string[128] = "black";
char frame_size [128] = "320x240";
char frame_rate [128] = "25";
AVRational frame_rate_q;
int ret;
if (args)
sscanf(args, "%127[^:]:%127[^:]:%127s", color_string, frame_size, frame_rate);
if (av_parse_video_size(&color->w, &color->h, frame_size) < 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame size: %s\n", frame_size);
return AVERROR(EINVAL);
}
if (av_parse_video_rate(&frame_rate_q, frame_rate) < 0 ||
frame_rate_q.den <= 0 || frame_rate_q.num <= 0) {
av_log(ctx, AV_LOG_ERROR, "Invalid frame rate: %s\n", frame_rate);
return AVERROR(EINVAL);
}
color->time_base.num = frame_rate_q.den;
color->time_base.den = frame_rate_q.num;
if ((ret = av_parse_color(color->color, color_string, -1, ctx)) < 0)
return ret;
return 0;
}
static av_cold void color_uninit(AVFilterContext *ctx)
{
ColorContext *color = ctx->priv;
int i;
for (i = 0; i < 4; i++) {
av_freep(&color->line[i]);
color->line_step[i] = 0;
}
}
static int color_config_props(AVFilterLink *inlink)
{
AVFilterContext *ctx = inlink->src;
ColorContext *color = ctx->priv;
uint8_t rgba_color[4];
int is_packed_rgba;
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format];
color->hsub = pix_desc->log2_chroma_w;
color->vsub = pix_desc->log2_chroma_h;
color->w &= ~((1 << color->hsub) - 1);
color->h &= ~((1 << color->vsub) - 1);
if (av_image_check_size(color->w, color->h, 0, ctx) < 0)
return AVERROR(EINVAL);
memcpy(rgba_color, color->color, sizeof(rgba_color));
ff_fill_line_with_color(color->line, color->line_step, color->w, color->color,
inlink->format, rgba_color, &is_packed_rgba, NULL);
av_log(ctx, AV_LOG_INFO, "w:%d h:%d r:%d/%d color:0x%02x%02x%02x%02x[%s]\n",
color->w, color->h, color->time_base.den, color->time_base.num,
color->color[0], color->color[1], color->color[2], color->color[3],
is_packed_rgba ? "rgba" : "yuva");
inlink->w = color->w;
inlink->h = color->h;
return 0;
}
static int color_request_frame(AVFilterLink *link)
{
ColorContext *color = link->src->priv;
AVFilterBufferRef *picref = avfilter_get_video_buffer(link, AV_PERM_WRITE, color->w, color->h);
picref->video->pixel_aspect = (AVRational) {1, 1};
picref->pts = av_rescale_q(color->pts++, color->time_base, AV_TIME_BASE_Q);
picref->pos = 0;
avfilter_start_frame(link, avfilter_ref_buffer(picref, ~0));
ff_draw_rectangle(picref->data, picref->linesize,
color->line, color->line_step, color->hsub, color->vsub,
0, 0, color->w, color->h);
avfilter_draw_slice(link, 0, color->h, 1);
avfilter_end_frame(link);
avfilter_unref_buffer(picref);
return 0;
}
AVFilter avfilter_vsrc_color = {
.name = "color",
.description = NULL_IF_CONFIG_SMALL("Provide an uniformly colored input, syntax is: [color[:size[:rate]]]"),
.priv_size = sizeof(ColorContext),
.init = color_init,
.uninit = color_uninit,
.query_formats = query_formats,
.inputs = (AVFilterPad[]) {{ .name = NULL}},
.outputs = (AVFilterPad[]) {{ .name = "default",
.type = AVMEDIA_TYPE_VIDEO,
.request_frame = color_request_frame,
.config_props = color_config_props },
{ .name = NULL}},
};
#endif /* CONFIG_COLOR_FILTER */