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avfilter/vf_histogram: remove deprecated stuff
Remove all modes except levels mode. Users should already switch to other filters with extended funcionality: vectorscope and waveform. Signed-off-by: Paul B Mahol <onemda@gmail.com>
This commit is contained in:
Paul B Mahol
parent
25e37f5ea9
commit
cde75e3150
@ -7121,109 +7121,42 @@ Compute and draw a color distribution histogram for the input video.
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The computed histogram is a representation of the color component
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distribution in an image.
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The filter accepts the following options:
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@table @option
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@item mode
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Set histogram mode.
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It accepts the following values:
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@table @samp
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@item levels
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Standard histogram that displays the color components distribution in an
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image. Displays color graph for each color component. Shows distribution of
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Standard histogram displays the color components distribution in an image.
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Displays color graph for each color component. Shows distribution of
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the Y, U, V, A or R, G, B components, depending on input format, in the
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current frame. Below each graph a color component scale meter is shown.
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@item color
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Displays chroma values (U/V color placement) in a two dimensional
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graph (which is called a vectorscope). The brighter a pixel in the
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vectorscope, the more pixels of the input frame correspond to that pixel
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(i.e., more pixels have this chroma value). The V component is displayed on
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the horizontal (X) axis, with the leftmost side being V = 0 and the rightmost
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side being V = 255. The U component is displayed on the vertical (Y) axis,
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with the top representing U = 0 and the bottom representing U = 255.
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The position of a white pixel in the graph corresponds to the chroma value of
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a pixel of the input clip. The graph can therefore be used to read the hue
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(color flavor) and the saturation (the dominance of the hue in the color). As
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the hue of a color changes, it moves around the square. At the center of the
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square the saturation is zero, which means that the corresponding pixel has no
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color. If the amount of a specific color is increased (while leaving the other
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colors unchanged) the saturation increases, and the indicator moves towards
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the edge of the square.
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@item color2
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Chroma values in vectorscope, similar as @code{color} but actual chroma values
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are displayed.
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@item waveform
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Per row/column color component graph. In row mode, the graph on the left side
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represents color component value 0 and the right side represents value = 255.
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In column mode, the top side represents color component value = 0 and bottom
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side represents value = 255.
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@end table
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Default value is @code{levels}.
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The filter accepts the following options:
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@table @option
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@item level_height
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Set height of level in @code{levels}. Default value is @code{200}.
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Set height of level. Default value is @code{200}.
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Allowed range is [50, 2048].
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@item scale_height
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Set height of color scale in @code{levels}. Default value is @code{12}.
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Set height of color scale. Default value is @code{12}.
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Allowed range is [0, 40].
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@item step
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Set step for @code{waveform} mode. Smaller values are useful to find out how
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many values of the same luminance are distributed across input rows/columns.
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Default value is @code{10}. Allowed range is [1, 255].
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@item waveform_mode
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Set mode for @code{waveform}. Can be either @code{row}, or @code{column}.
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Default is @code{row}.
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@item waveform_mirror
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Set mirroring mode for @code{waveform}. @code{0} means unmirrored, @code{1}
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means mirrored. In mirrored mode, higher values will be represented on the left
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side for @code{row} mode and at the top for @code{column} mode. Default is
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@code{0} (unmirrored).
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@item display_mode
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Set display mode for @code{waveform} and @code{levels}.
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Set display mode.
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It accepts the following values:
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@table @samp
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@item parade
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Display separate graph for the color components side by side in
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@code{row} waveform mode or one below the other in @code{column} waveform mode
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for @code{waveform} histogram mode. For @code{levels} histogram mode,
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per color component graphs are placed below each other.
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Using this display mode in @code{waveform} histogram mode makes it easy to
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spot color casts in the highlights and shadows of an image, by comparing the
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contours of the top and the bottom graphs of each waveform. Since whites,
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grays, and blacks are characterized by exactly equal amounts of red, green,
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and blue, neutral areas of the picture should display three waveforms of
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roughly equal width/height. If not, the correction is easy to perform by
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making level adjustments the three waveforms.
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Per color component graphs are placed below each other.
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@item overlay
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Presents information identical to that in the @code{parade}, except
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that the graphs representing color components are superimposed directly
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over one another.
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This display mode in @code{waveform} histogram mode makes it easier to spot
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relative differences or similarities in overlapping areas of the color
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components that are supposed to be identical, such as neutral whites, grays,
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or blacks.
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@end table
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Default is @code{parade}.
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@item levels_mode
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Set mode for @code{levels}. Can be either @code{linear}, or @code{logarithmic}.
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Set mode. Can be either @code{linear}, or @code{logarithmic}.
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Default is @code{linear}.
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@item components
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Set what color components to display for mode @code{levels}.
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Set what color components to display.
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Default is @code{7}.
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@end table
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@ -29,17 +29,8 @@
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#include "internal.h"
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#include "video.h"
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enum HistogramMode {
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MODE_LEVELS,
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MODE_WAVEFORM,
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MODE_COLOR,
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MODE_COLOR2,
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MODE_NB
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};
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typedef struct HistogramContext {
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const AVClass *class; ///< AVClass context for log and options purpose
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int mode; ///< HistogramMode
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unsigned histogram[256*256];
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int histogram_size;
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int mult;
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@ -48,9 +39,6 @@ typedef struct HistogramContext {
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const uint8_t *fg_color;
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int level_height;
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int scale_height;
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int step;
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int waveform_mode;
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int waveform_mirror;
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int display_mode;
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int levels_mode;
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const AVPixFmtDescriptor *desc, *odesc;
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@ -63,18 +51,8 @@ typedef struct HistogramContext {
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption histogram_options[] = {
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{ "mode", "set histogram mode", OFFSET(mode), AV_OPT_TYPE_INT, {.i64=MODE_LEVELS}, 0, MODE_NB-1, FLAGS, "mode"},
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{ "levels", "standard histogram", 0, AV_OPT_TYPE_CONST, {.i64=MODE_LEVELS}, 0, 0, FLAGS, "mode" },
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{ "waveform", "per row/column luminance graph", 0, AV_OPT_TYPE_CONST, {.i64=MODE_WAVEFORM}, 0, 0, FLAGS, "mode" },
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{ "color", "chroma values in vectorscope", 0, AV_OPT_TYPE_CONST, {.i64=MODE_COLOR}, 0, 0, FLAGS, "mode" },
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{ "color2", "chroma values in vectorscope", 0, AV_OPT_TYPE_CONST, {.i64=MODE_COLOR2}, 0, 0, FLAGS, "mode" },
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{ "level_height", "set level height", OFFSET(level_height), AV_OPT_TYPE_INT, {.i64=200}, 50, 2048, FLAGS},
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{ "scale_height", "set scale height", OFFSET(scale_height), AV_OPT_TYPE_INT, {.i64=12}, 0, 40, FLAGS},
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{ "step", "set waveform step value", OFFSET(step), AV_OPT_TYPE_INT, {.i64=10}, 1, 255, FLAGS},
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{ "waveform_mode", "set waveform mode", OFFSET(waveform_mode), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "waveform_mode"},
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{ "row", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "waveform_mode" },
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{ "column", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "waveform_mode" },
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{ "waveform_mirror", "set waveform mirroring", OFFSET(waveform_mirror), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "waveform_mirror"},
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{ "display_mode", "set display mode", OFFSET(display_mode), AV_OPT_TYPE_INT, {.i64=1}, 0, 1, FLAGS, "display_mode"},
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{ "parade", NULL, 0, AV_OPT_TYPE_CONST, {.i64=1}, 0, 0, FLAGS, "display_mode" },
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{ "overlay", NULL, 0, AV_OPT_TYPE_CONST, {.i64=0}, 0, 0, FLAGS, "display_mode" },
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@ -87,11 +65,6 @@ static const AVOption histogram_options[] = {
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AVFILTER_DEFINE_CLASS(histogram);
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static const enum AVPixelFormat color_pix_fmts[] = {
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat levels_in_pix_fmts[] = {
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AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P,
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@ -138,85 +111,49 @@ static const enum AVPixelFormat levels_out_rgb10_pix_fmts[] = {
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AV_PIX_FMT_NONE
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};
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static const enum AVPixelFormat waveform_pix_fmts[] = {
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AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
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AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
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AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P,
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AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
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AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P,
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AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
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AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
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AV_PIX_FMT_GRAY8,
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AV_PIX_FMT_NONE
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};
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static int query_formats(AVFilterContext *ctx)
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{
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HistogramContext *h = ctx->priv;
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const enum AVPixelFormat *pix_fmts;
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AVFilterFormats *fmts_list;
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AVFilterFormats *avff;
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const AVPixFmtDescriptor *desc;
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const enum AVPixelFormat *out_pix_fmts;
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int rgb, i, bits;
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int ret;
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switch (h->mode) {
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case MODE_WAVEFORM:
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pix_fmts = waveform_pix_fmts;
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break;
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case MODE_LEVELS:
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{
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AVFilterFormats *avff;
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const AVPixFmtDescriptor *desc;
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const enum AVPixelFormat *out_pix_fmts;
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int rgb, i, bits;
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if (!ctx->inputs[0]->in_formats ||
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!ctx->inputs[0]->in_formats->nb_formats) {
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return AVERROR(EAGAIN);
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}
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if (!ctx->inputs[0]->in_formats ||
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!ctx->inputs[0]->in_formats->nb_formats) {
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return AVERROR(EAGAIN);
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}
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if (!ctx->inputs[0]->out_formats)
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if ((ret = ff_formats_ref(ff_make_format_list(levels_in_pix_fmts), &ctx->inputs[0]->out_formats)) < 0)
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return ret;
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avff = ctx->inputs[0]->in_formats;
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desc = av_pix_fmt_desc_get(avff->formats[0]);
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rgb = desc->flags & AV_PIX_FMT_FLAG_RGB;
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bits = desc->comp[0].depth;
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for (i = 1; i < avff->nb_formats; i++) {
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desc = av_pix_fmt_desc_get(avff->formats[i]);
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if ((rgb != (desc->flags & AV_PIX_FMT_FLAG_RGB)) ||
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(bits != desc->comp[0].depth))
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return AVERROR(EAGAIN);
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}
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if (rgb && bits == 8)
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out_pix_fmts = levels_out_rgb8_pix_fmts;
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else if (rgb && bits == 9)
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out_pix_fmts = levels_out_rgb9_pix_fmts;
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else if (rgb && bits == 10)
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out_pix_fmts = levels_out_rgb10_pix_fmts;
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else if (bits == 8)
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out_pix_fmts = levels_out_yuv8_pix_fmts;
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else if (bits == 9)
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out_pix_fmts = levels_out_yuv9_pix_fmts;
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else // if (bits == 10)
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out_pix_fmts = levels_out_yuv10_pix_fmts;
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if ((ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats)) < 0)
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if (!ctx->inputs[0]->out_formats)
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if ((ret = ff_formats_ref(ff_make_format_list(levels_in_pix_fmts), &ctx->inputs[0]->out_formats)) < 0)
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return ret;
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return 0;
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}
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break;
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case MODE_COLOR:
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case MODE_COLOR2:
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pix_fmts = color_pix_fmts;
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break;
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default:
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av_assert0(0);
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avff = ctx->inputs[0]->in_formats;
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desc = av_pix_fmt_desc_get(avff->formats[0]);
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rgb = desc->flags & AV_PIX_FMT_FLAG_RGB;
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bits = desc->comp[0].depth;
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for (i = 1; i < avff->nb_formats; i++) {
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desc = av_pix_fmt_desc_get(avff->formats[i]);
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if ((rgb != (desc->flags & AV_PIX_FMT_FLAG_RGB)) ||
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(bits != desc->comp[0].depth))
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return AVERROR(EAGAIN);
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}
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fmts_list = ff_make_format_list(pix_fmts);
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if (!fmts_list)
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return AVERROR(ENOMEM);
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return ff_set_common_formats(ctx, fmts_list);
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if (rgb && bits == 8)
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out_pix_fmts = levels_out_rgb8_pix_fmts;
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else if (rgb && bits == 9)
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out_pix_fmts = levels_out_rgb9_pix_fmts;
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else if (rgb && bits == 10)
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out_pix_fmts = levels_out_rgb10_pix_fmts;
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else if (bits == 8)
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out_pix_fmts = levels_out_yuv8_pix_fmts;
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else if (bits == 9)
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out_pix_fmts = levels_out_yuv9_pix_fmts;
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else // if (bits == 10)
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out_pix_fmts = levels_out_yuv10_pix_fmts;
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if ((ret = ff_formats_ref(ff_make_format_list(out_pix_fmts), &ctx->outputs[0]->in_formats)) < 0)
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return ret;
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return 0;
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}
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static const uint8_t black_yuva_color[4] = { 0, 127, 127, 255 };
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@ -260,30 +197,12 @@ static int config_output(AVFilterLink *outlink)
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HistogramContext *h = ctx->priv;
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int ncomp = 0, i;
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switch (h->mode) {
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case MODE_LEVELS:
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for (i = 0; i < h->ncomp; i++) {
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if ((1 << i) & h->components)
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ncomp++;
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}
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outlink->w = h->histogram_size;
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outlink->h = (h->level_height + h->scale_height) * FFMAX(ncomp * h->display_mode, 1);
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break;
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case MODE_WAVEFORM:
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av_log(ctx, AV_LOG_WARNING, "This mode is deprecated, please use waveform filter instead.\n");
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if (h->waveform_mode)
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outlink->h = 256 * FFMAX(h->ncomp * h->display_mode, 1);
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else
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outlink->w = 256 * FFMAX(h->ncomp * h->display_mode, 1);
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break;
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case MODE_COLOR:
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case MODE_COLOR2:
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av_log(ctx, AV_LOG_WARNING, "This mode is deprecated, use vectorscope filter instead.");
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outlink->h = outlink->w = 256;
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break;
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default:
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av_assert0(0);
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for (i = 0; i < h->ncomp; i++) {
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if ((1 << i) & h->components)
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ncomp++;
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}
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outlink->w = h->histogram_size;
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outlink->h = (h->level_height + h->scale_height) * FFMAX(ncomp * h->display_mode, 1);
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h->odesc = av_pix_fmt_desc_get(outlink->format);
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outlink->sample_aspect_ratio = (AVRational){1,1};
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@ -291,60 +210,12 @@ static int config_output(AVFilterLink *outlink)
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return 0;
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}
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static void gen_waveform(HistogramContext *h, AVFrame *inpicref, AVFrame *outpicref,
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int component, int intensity, int offset, int col_mode)
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{
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const int plane = h->desc->comp[component].plane;
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const int mirror = h->waveform_mirror;
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const int is_chroma = (component == 1 || component == 2);
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const int shift_w = (is_chroma ? h->desc->log2_chroma_w : 0);
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const int shift_h = (is_chroma ? h->desc->log2_chroma_h : 0);
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const int src_linesize = inpicref->linesize[plane];
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const int dst_linesize = outpicref->linesize[plane];
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const int dst_signed_linesize = dst_linesize * (mirror == 1 ? -1 : 1);
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uint8_t *src_data = inpicref->data[plane];
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uint8_t *dst_data = outpicref->data[plane] + (col_mode ? (offset >> shift_h) * dst_linesize : offset >> shift_w);
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uint8_t * const dst_bottom_line = dst_data + dst_linesize * ((256 >> shift_h) - 1);
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uint8_t * const dst_line = (mirror ? dst_bottom_line : dst_data);
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const uint8_t max = 255 - intensity;
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const int src_h = FF_CEIL_RSHIFT(inpicref->height, shift_h);
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const int src_w = FF_CEIL_RSHIFT(inpicref->width, shift_w);
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uint8_t *dst, *p;
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int y;
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if (!col_mode && mirror)
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dst_data += 256 >> shift_w;
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for (y = 0; y < src_h; y++) {
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const uint8_t *src_data_end = src_data + src_w;
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dst = dst_line;
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for (p = src_data; p < src_data_end; p++) {
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uint8_t *target;
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if (col_mode) {
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target = dst++ + dst_signed_linesize * (*p >> shift_h);
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} else {
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if (mirror)
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target = dst_data - (*p >> shift_w);
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else
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target = dst_data + (*p >> shift_w);
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}
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if (*target <= max)
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*target += intensity;
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else
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*target = 255;
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}
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src_data += src_linesize;
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dst_data += dst_linesize;
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}
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}
|
||||
|
||||
|
||||
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
||||
{
|
||||
HistogramContext *h = inlink->dst->priv;
|
||||
AVFilterContext *ctx = inlink->dst;
|
||||
AVFilterLink *outlink = ctx->outputs[0];
|
||||
AVFrame *out;
|
||||
uint8_t *dst;
|
||||
int i, j, k, l, m;
|
||||
|
||||
out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
|
||||
@ -376,119 +247,72 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
|
||||
}
|
||||
}
|
||||
|
||||
switch (h->mode) {
|
||||
case MODE_LEVELS:
|
||||
for (m = 0, k = 0; k < h->ncomp; k++) {
|
||||
const int p = h->desc->comp[k].plane;
|
||||
const int height = h->planeheight[p];
|
||||
const int width = h->planewidth[p];
|
||||
double max_hval_log;
|
||||
unsigned max_hval = 0;
|
||||
int start;
|
||||
for (m = 0, k = 0; k < h->ncomp; k++) {
|
||||
const int p = h->desc->comp[k].plane;
|
||||
const int height = h->planeheight[p];
|
||||
const int width = h->planewidth[p];
|
||||
double max_hval_log;
|
||||
unsigned max_hval = 0;
|
||||
int start;
|
||||
|
||||
if (!((1 << k) & h->components))
|
||||
continue;
|
||||
start = m++ * (h->level_height + h->scale_height) * h->display_mode;
|
||||
if (!((1 << k) & h->components))
|
||||
continue;
|
||||
start = m++ * (h->level_height + h->scale_height) * h->display_mode;
|
||||
|
||||
if (h->histogram_size <= 256) {
|
||||
for (i = 0; i < height; i++) {
|
||||
const uint8_t *src = in->data[p] + i * in->linesize[p];
|
||||
for (j = 0; j < width; j++)
|
||||
h->histogram[src[j]]++;
|
||||
}
|
||||
} else {
|
||||
for (i = 0; i < height; i++) {
|
||||
const uint16_t *src = (const uint16_t *)(in->data[p] + i * in->linesize[p]);
|
||||
for (j = 0; j < width; j++)
|
||||
h->histogram[src[j]]++;
|
||||
}
|
||||
}
|
||||
|
||||
for (i = 0; i < h->histogram_size; i++)
|
||||
max_hval = FFMAX(max_hval, h->histogram[i]);
|
||||
max_hval_log = log2(max_hval + 1);
|
||||
|
||||
for (i = 0; i < outlink->w; i++) {
|
||||
int col_height;
|
||||
|
||||
if (h->levels_mode)
|
||||
col_height = round(h->level_height * (1. - (log2(h->histogram[i] + 1) / max_hval_log)));
|
||||
else
|
||||
col_height = h->level_height - (h->histogram[i] * (int64_t)h->level_height + max_hval - 1) / max_hval;
|
||||
|
||||
if (h->histogram_size <= 256) {
|
||||
for (i = 0; i < height; i++) {
|
||||
const uint8_t *src = in->data[p] + i * in->linesize[p];
|
||||
for (j = 0; j < width; j++)
|
||||
h->histogram[src[j]]++;
|
||||
for (j = h->level_height - 1; j >= col_height; j--) {
|
||||
if (h->display_mode) {
|
||||
for (l = 0; l < h->ncomp; l++)
|
||||
out->data[l][(j + start) * out->linesize[l] + i] = h->fg_color[l];
|
||||
} else {
|
||||
out->data[p][(j + start) * out->linesize[p] + i] = 255;
|
||||
}
|
||||
}
|
||||
for (j = h->level_height + h->scale_height - 1; j >= h->level_height; j--)
|
||||
out->data[p][(j + start) * out->linesize[p] + i] = i;
|
||||
} else {
|
||||
for (i = 0; i < height; i++) {
|
||||
const uint16_t *src = (const uint16_t *)(in->data[p] + i * in->linesize[p]);
|
||||
for (j = 0; j < width; j++)
|
||||
h->histogram[src[j]]++;
|
||||
}
|
||||
}
|
||||
const int mult = h->mult;
|
||||
|
||||
for (i = 0; i < h->histogram_size; i++)
|
||||
max_hval = FFMAX(max_hval, h->histogram[i]);
|
||||
max_hval_log = log2(max_hval + 1);
|
||||
|
||||
for (i = 0; i < outlink->w; i++) {
|
||||
int col_height;
|
||||
|
||||
if (h->levels_mode)
|
||||
col_height = round(h->level_height * (1. - (log2(h->histogram[i] + 1) / max_hval_log)));
|
||||
else
|
||||
col_height = h->level_height - (h->histogram[i] * (int64_t)h->level_height + max_hval - 1) / max_hval;
|
||||
|
||||
if (h->histogram_size <= 256) {
|
||||
for (j = h->level_height - 1; j >= col_height; j--) {
|
||||
if (h->display_mode) {
|
||||
for (l = 0; l < h->ncomp; l++)
|
||||
out->data[l][(j + start) * out->linesize[l] + i] = h->fg_color[l];
|
||||
} else {
|
||||
out->data[p][(j + start) * out->linesize[p] + i] = 255;
|
||||
}
|
||||
for (j = h->level_height - 1; j >= col_height; j--) {
|
||||
if (h->display_mode) {
|
||||
for (l = 0; l < h->ncomp; l++)
|
||||
AV_WN16(out->data[l] + (j + start) * out->linesize[l] + i * 2, h->fg_color[l] * mult);
|
||||
} else {
|
||||
AV_WN16(out->data[p] + (j + start) * out->linesize[p] + i * 2, 255 * mult);
|
||||
}
|
||||
for (j = h->level_height + h->scale_height - 1; j >= h->level_height; j--)
|
||||
out->data[p][(j + start) * out->linesize[p] + i] = i;
|
||||
} else {
|
||||
const int mult = h->mult;
|
||||
|
||||
for (j = h->level_height - 1; j >= col_height; j--) {
|
||||
if (h->display_mode) {
|
||||
for (l = 0; l < h->ncomp; l++)
|
||||
AV_WN16(out->data[l] + (j + start) * out->linesize[l] + i * 2, h->fg_color[l] * mult);
|
||||
} else {
|
||||
AV_WN16(out->data[p] + (j + start) * out->linesize[p] + i * 2, 255 * mult);
|
||||
}
|
||||
}
|
||||
for (j = h->level_height + h->scale_height - 1; j >= h->level_height; j--)
|
||||
AV_WN16(out->data[p] + (j + start) * out->linesize[p] + i * 2, i);
|
||||
}
|
||||
for (j = h->level_height + h->scale_height - 1; j >= h->level_height; j--)
|
||||
AV_WN16(out->data[p] + (j + start) * out->linesize[p] + i * 2, i);
|
||||
}
|
||||
}
|
||||
|
||||
memset(h->histogram, 0, h->histogram_size * sizeof(unsigned));
|
||||
}
|
||||
break;
|
||||
case MODE_WAVEFORM:
|
||||
for (k = 0; k < h->ncomp; k++) {
|
||||
const int offset = k * 256 * h->display_mode;
|
||||
gen_waveform(h, in, out, k, h->step, offset, h->waveform_mode);
|
||||
}
|
||||
break;
|
||||
case MODE_COLOR:
|
||||
for (i = 0; i < inlink->h; i++) {
|
||||
const int iw1 = i * in->linesize[1];
|
||||
const int iw2 = i * in->linesize[2];
|
||||
for (j = 0; j < inlink->w; j++) {
|
||||
const int pos = in->data[1][iw1 + j] * out->linesize[0] + in->data[2][iw2 + j];
|
||||
if (out->data[0][pos] < 255)
|
||||
out->data[0][pos]++;
|
||||
}
|
||||
}
|
||||
for (i = 0; i < 256; i++) {
|
||||
dst = out->data[0] + i * out->linesize[0];
|
||||
for (j = 0; j < 256; j++) {
|
||||
if (!dst[j]) {
|
||||
out->data[1][i * out->linesize[0] + j] = i;
|
||||
out->data[2][i * out->linesize[0] + j] = j;
|
||||
}
|
||||
}
|
||||
}
|
||||
break;
|
||||
case MODE_COLOR2:
|
||||
for (i = 0; i < inlink->h; i++) {
|
||||
const int iw1 = i * in->linesize[1];
|
||||
const int iw2 = i * in->linesize[2];
|
||||
for (j = 0; j < inlink->w; j++) {
|
||||
const int u = in->data[1][iw1 + j];
|
||||
const int v = in->data[2][iw2 + j];
|
||||
const int pos = u * out->linesize[0] + v;
|
||||
if (!out->data[0][pos])
|
||||
out->data[0][pos] = FFABS(128 - u) + FFABS(128 - v);
|
||||
out->data[1][pos] = u;
|
||||
out->data[2][pos] = v;
|
||||
}
|
||||
}
|
||||
break;
|
||||
default:
|
||||
av_assert0(0);
|
||||
memset(h->histogram, 0, h->histogram_size * sizeof(unsigned));
|
||||
}
|
||||
|
||||
av_frame_free(&in);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user