Go to the source code of this file.
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| AVFILTER_DEFINE_CLASS (thumbnail_cuda) |
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static av_cold int | init (AVFilterContext *ctx) |
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static double | frame_sum_square_err (const int *hist, const double *median) |
| Compute Sum-square deviation to estimate "closeness". More...
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static AVFrame * | get_best_frame (AVFilterContext *ctx) |
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static int | thumbnail_kernel (AVFilterContext *ctx, CUfunction func, int channels, int *histogram, uint8_t *src_dptr, int src_width, int src_height, int src_pitch, int pixel_size) |
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static int | thumbnail (AVFilterContext *ctx, int *histogram, AVFrame *in) |
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static int | filter_frame (AVFilterLink *inlink, AVFrame *frame) |
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static av_cold void | uninit (AVFilterContext *ctx) |
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static int | request_frame (AVFilterLink *link) |
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static int | format_is_supported (enum AVPixelFormat fmt) |
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static int | config_props (AVFilterLink *inlink) |
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◆ CHECK_CU
◆ HIST_SIZE
#define HIST_SIZE (3*256) |
◆ DIV_UP
#define DIV_UP |
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a, |
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b |
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| ( ((a) + (b) - 1) / (b) ) |
◆ BLOCKX
◆ BLOCKY
◆ OFFSET
◆ FLAGS
◆ AVFILTER_DEFINE_CLASS()
AVFILTER_DEFINE_CLASS |
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thumbnail_cuda |
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◆ init()
◆ frame_sum_square_err()
static double frame_sum_square_err |
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const int * |
hist, |
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const double * |
median |
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Compute Sum-square deviation to estimate "closeness".
- Parameters
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hist | color distribution histogram |
median | average color distribution histogram |
- Returns
- sum of squared errors
Definition at line 107 of file vf_thumbnail_cuda.c.
Referenced by get_best_frame().
◆ get_best_frame()
◆ thumbnail_kernel()
static int thumbnail_kernel |
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AVFilterContext * |
ctx, |
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CUfunction |
func, |
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int |
channels, |
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int * |
histogram, |
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uint8_t * |
src_dptr, |
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int |
src_width, |
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int |
src_height, |
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int |
src_pitch, |
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int |
pixel_size |
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◆ thumbnail()
◆ filter_frame()
◆ uninit()
◆ request_frame()
◆ format_is_supported()
◆ config_props()
◆ supported_formats
◆ thumbnail_cuda_options
◆ thumbnail_cuda_inputs
◆ thumbnail_cuda_outputs
◆ ff_vf_thumbnail_cuda
Initial value:= {
.name = "thumbnail_cuda",
.description =
NULL_IF_CONFIG_SMALL(
"Select the most representative frame in a given sequence of consecutive frames."),
.priv_class = &thumbnail_cuda_class,
}
Definition at line 436 of file vf_thumbnail_cuda.c.