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vsrc_testsrc: perform some refactoring for simplifying sharing code with another test

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In particular creates a special test_init function, which calls a
common init, and introduces a fill_picture_fn which points to the
filling function.

This is required by the pending patch for adding the rgbtestsrc
source.
This commit is contained in:
Stefano Sabatini 2011-07-11 16:20:05 +02:00
parent 4bd28579e5
commit 1b8807964c
1 changed files with 47 additions and 33 deletions
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80
libavfilter/vsrc_testsrc.c
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@ -40,6 +40,7 @@ typedef struct {
char *size; ///< video frame size
char *rate; ///< video frame rate
char *duration; ///< total duration of the generated video
void (* fill_picture_fn)(AVFilterContext *ctx, AVFilterBufferRef *picref);
} TestSourceContext;
#define OFFSET(x) offsetof(TestSourceContext, x)
@ -53,17 +54,6 @@ static const AVOption testsrc_options[]= {
{ NULL },
};
static const char *testsrc_get_name(void *ctx)
{
return "testsrc";
}
static const AVClass testsrc_class = {
"TestSourceContext",
testsrc_get_name,
testsrc_options
};
static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
{
TestSourceContext *test = ctx->priv;
@ -71,7 +61,6 @@ static av_cold int init(AVFilterContext *ctx, const char *args, void *opaque)
int64_t duration = -1;
int ret = 0;
test->class = &testsrc_class;
av_opt_set_defaults2(test, 0, 0);
if ((ret = (av_set_options_string(test, args, "=", ":"))) < 0) {
@ -119,6 +108,40 @@ static int config_props(AVFilterLink *outlink)
return 0;
}
static int request_frame(AVFilterLink *outlink)
{
TestSourceContext *test = outlink->src->priv;
AVFilterBufferRef *picref;
if (test->max_pts >= 0 && test->pts > test->max_pts)
return AVERROR_EOF;
picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE,
test->w, test->h);
picref->pts = test->pts++;
test->nb_frame++;
test->fill_picture_fn(outlink->src, picref);
avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
avfilter_draw_slice(outlink, 0, picref->video->h, 1);
avfilter_end_frame(outlink);
avfilter_unref_buffer(picref);
return 0;
}
#if CONFIG_TESTSRC_FILTER
static const char *testsrc_get_name(void *ctx)
{
return "testsrc";
}
static const AVClass testsrc_class = {
"TestSourceContext",
testsrc_get_name,
testsrc_options
};
/**
* Fill a rectangle with value val.
*
@ -191,8 +214,9 @@ static void draw_digit(int digit, uint8_t *dst, unsigned dst_linesize,
#define GRADIENT_SIZE (6 * 256)
static void fill_picture(TestSourceContext *test, AVFilterBufferRef *picref)
static void test_fill_picture(AVFilterContext *ctx, AVFilterBufferRef *picref)
{
TestSourceContext *test = ctx->priv;
uint8_t *p, *p0;
int x, y;
int color, color_rest;
@ -290,28 +314,16 @@ static void fill_picture(TestSourceContext *test, AVFilterBufferRef *picref)
}
}
static int request_frame(AVFilterLink *outlink)
static av_cold int test_init(AVFilterContext *ctx, const char *args, void *opaque)
{
TestSourceContext *test = outlink->src->priv;
AVFilterBufferRef *picref;
TestSourceContext *test = ctx->priv;
if (test->max_pts >= 0 && test->pts > test->max_pts)
return AVERROR_EOF;
picref = avfilter_get_video_buffer(outlink, AV_PERM_WRITE,
test->w, test->h);
picref->pts = test->pts++;
test->nb_frame++;
fill_picture(test, picref);
avfilter_start_frame(outlink, avfilter_ref_buffer(picref, ~0));
avfilter_draw_slice(outlink, 0, picref->video->h, 1);
avfilter_end_frame(outlink);
avfilter_unref_buffer(picref);
return 0;
test->class = &testsrc_class;
test->fill_picture_fn = test_fill_picture;
return init(ctx, args, opaque);
}
static int query_formats(AVFilterContext *ctx)
static int test_query_formats(AVFilterContext *ctx)
{
static const enum PixelFormat pix_fmts[] = {
PIX_FMT_RGB24, PIX_FMT_NONE
@ -324,9 +336,9 @@ AVFilter avfilter_vsrc_testsrc = {
.name = "testsrc",
.description = NULL_IF_CONFIG_SMALL("Generate test pattern."),
.priv_size = sizeof(TestSourceContext),
.init = init,
.init = test_init,
.query_formats = query_formats,
.query_formats = test_query_formats,
.inputs = (AVFilterPad[]) {{ .name = NULL}},
@ -336,3 +348,5 @@ AVFilter avfilter_vsrc_testsrc = {
.config_props = config_props, },
{ .name = NULL }},
};
#endif /* CONFIG_TESTSRC_FILTER */