On Thu, Oct 13, 2016 at 10:38 PM, Michael Niedermayer <[email protected]> wrote: > On Thu, Oct 13, 2016 at 06:05:19AM +0700, Muhammad Faiz wrote: >> from colorspace filter >> >> Signed-off-by: Muhammad Faiz <[email protected]> >> --- >> doc/filters.texi | 26 ++++++++++++++++++++++ >> libavfilter/avf_showcqt.c | 56 >> ++++++++++++++++++++++++++++++++++++++++++----- >> libavfilter/avf_showcqt.h | 2 ++ >> 3 files changed, 79 insertions(+), 5 deletions(-) >> >> diff --git a/doc/filters.texi b/doc/filters.texi >> index 76265e7..a79972b 100644 >> --- a/doc/filters.texi >> +++ b/doc/filters.texi >> @@ -16884,6 +16884,32 @@ Enable/disable drawing text to the axis. If it is >> set to @code{0}, drawing to >> the axis is disabled, ignoring @var{fontfile} and @var{axisfile} option. >> Default value is @code{1}. >> >> +@item csp >> +Set colorspace. The accepted values are: >> +@table @samp >> +@item unspecified >> +Unspecified (default) >> + >> +@item bt709 >> +BT.709 >> + >> +@item fcc >> +FCC >> + >> +@item bt470bg >> +BT.470BG or BT.601-6 625 >> + >> +@item smpte170m >> +SMPTE-170M or BT.601-6 525 >> + >> +@item smpte240m >> +SMPTE-240M >> + >> +@item bt2020ncl >> +BT.2020 with non-constant luminance >> + >> +@end table >> + >> @end table >> >> @subsection Examples >> diff --git a/libavfilter/avf_showcqt.c b/libavfilter/avf_showcqt.c >> index 16bb2be..7c76b1f 100644 >> --- a/libavfilter/avf_showcqt.c >> +++ b/libavfilter/avf_showcqt.c >> @@ -83,6 +83,14 @@ static const AVOption showcqt_options[] = { >> { "axisfile", "set axis image", OFFSET(axisfile), >> AV_OPT_TYPE_STRING, { .str = NULL }, CHAR_MIN, CHAR_MAX, FLAGS }, >> { "axis", "draw axis", OFFSET(axis), >> AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, >> { "text", "draw axis", OFFSET(axis), >> AV_OPT_TYPE_BOOL, { .i64 = 1 }, 0, 1, FLAGS }, >> + { "csp", "set color space", OFFSET(csp), >> AV_OPT_TYPE_INT, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, INT_MAX, FLAGS, "csp" >> }, >> + { "unspecified", "unspecified", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_UNSPECIFIED }, 0, 0, FLAGS, "csp" }, >> + { "bt709", "bt709", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT709 }, 0, 0, FLAGS, "csp" }, >> + { "fcc", "fcc", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_FCC }, 0, 0, FLAGS, "csp" }, >> + { "bt470bg", "bt470bg", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT470BG }, 0, 0, FLAGS, "csp" }, >> + { "smpte170m", "smpte170m", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE170M }, 0, 0, FLAGS, "csp" }, >> + { "smpte240m", "smpte240m", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_SMPTE240M }, 0, 0, FLAGS, "csp" }, >> + { "bt2020ncl", "bt2020ncl", 0, >> AV_OPT_TYPE_CONST, { .i64 = AVCOL_SPC_BT2020_NCL }, 0, 0, FLAGS, "csp" }, >> { NULL } >> }; >> >> @@ -656,7 +664,7 @@ static void rgb_from_cqt(ColorFloat *c, const FFTComplex >> *v, float g, int len) >> } >> } >> >> -static void yuv_from_cqt(ColorFloat *c, const FFTComplex *v, float gamma, >> int len) >> +static void yuv_from_cqt(ColorFloat *c, const FFTComplex *v, float gamma, >> int len, float cm[3][3]) >> { >> int x; >> for (x = 0; x < len; x++) { >> @@ -664,9 +672,9 @@ static void yuv_from_cqt(ColorFloat *c, const FFTComplex >> *v, float gamma, int le >> r = calculate_gamma(FFMIN(1.0f, v[x].re), gamma); >> g = calculate_gamma(FFMIN(1.0f, 0.5f * (v[x].re + v[x].im)), gamma); >> b = calculate_gamma(FFMIN(1.0f, v[x].im), gamma); >> - c[x].yuv.y = 65.481f * r + 128.553f * g + 24.966f * b; >> - c[x].yuv.u = -37.797f * r - 74.203f * g + 112.0f * b; >> - c[x].yuv.v = 112.0f * r - 93.786f * g - 18.214 * b; >> + c[x].yuv.y = cm[0][0] * r + cm[0][1] * g + cm[0][2] * b; >> + c[x].yuv.u = cm[1][0] * r + cm[1][1] * g + cm[1][2] * b; >> + c[x].yuv.v = cm[2][0] * r + cm[2][1] * g + cm[2][2] * b; >> } >> } >> >> @@ -1036,7 +1044,7 @@ static void process_cqt(ShowCQTContext *s) >> if (s->format == AV_PIX_FMT_RGB24) >> rgb_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width); >> else >> - yuv_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width); >> + yuv_from_cqt(s->c_buf, s->cqt_result, s->sono_g, s->width, >> s->cmatrix); >> } >> >> static int plot_cqt(AVFilterContext *ctx, AVFrame **frameout) >> @@ -1075,6 +1083,7 @@ static int plot_cqt(AVFilterContext *ctx, AVFrame >> **frameout) >> return AVERROR(ENOMEM); >> out->sample_aspect_ratio = av_make_q(1, 1); >> av_frame_set_color_range(out, AVCOL_RANGE_MPEG); >> + av_frame_set_colorspace(out, s->csp); >> UPDATE_TIME(s->alloc_time); >> >> if (s->bar_h) { > > > @@ -1100,6 +1109,41 @@ static int plot_cqt(AVFilterContext *ctx, > AVFrame **frameout) >> return 0; >> } >> >> +static void init_colormatrix(ShowCQTContext *s) >> +{ >> + double kr, kg, kb; >> + >> + /* from vf_colorspace.c */ >> + switch (s->csp) { >> + default: >> + av_log(s->ctx, AV_LOG_WARNING, "unsupported colorspace, setting it >> to unspecified.\n"); >> + s->csp = AVCOL_SPC_UNSPECIFIED; >> + case AVCOL_SPC_UNSPECIFIED: >> + case AVCOL_SPC_BT470BG: >> + case AVCOL_SPC_SMPTE170M: >> + kr = 0.299; kb = 0.114; break; >> + case AVCOL_SPC_BT709: >> + kr = 0.2126; kb = 0.0722; break; >> + case AVCOL_SPC_FCC: >> + kr = 0.30; kb = 0.11; break; >> + case AVCOL_SPC_SMPTE240M: >> + kr = 0.212; kb = 0.087; break; >> + case AVCOL_SPC_BT2020_NCL: >> + kr = 0.2627; kb = 0.0593; break; >> + } >> + >> + kg = 1.0 - kr - kb; >> + s->cmatrix[0][0] = 219.0 * kr; >> + s->cmatrix[0][1] = 219.0 * kg; >> + s->cmatrix[0][2] = 219.0 * kb; >> + s->cmatrix[1][0] = -112.0 * kr / (1.0 - kb); >> + s->cmatrix[1][1] = -112.0 * kg / (1.0 - kb); >> + s->cmatrix[1][2] = 112.0; >> + s->cmatrix[2][0] = 112.0; >> + s->cmatrix[2][1] = -112.0 * kg / (1.0 - kr); >> + s->cmatrix[2][2] = -112.0 * kb / (1.0 - kr); >> +} > > hardcoding these numbers here feels a bit "ugly" > (or rather hardcoding them everywhere where they are used) > > these should be a #define or something like that from some header > and that named identifer(s) then used everywhere >
219 and 224 are used previously in many places and they are unnamed. _______________________________________________ ffmpeg-devel mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
