* based heavily on vf_negate.c by Bobby Bingham
*/
+#include "libavutil/avassert.h"
#include "libavutil/avstring.h"
#include "libavutil/common.h"
#include "libavutil/eval.h"
int type;
int factor, fade_per_frame;
int start_frame, nb_frames;
- unsigned int frame_index;
int hsub, vsub, bpp;
unsigned int black_level, black_level_scaled;
uint8_t is_packed_rgb;
int alpha;
uint64_t start_time, duration;
enum {VF_FADE_WAITING=0, VF_FADE_FADING, VF_FADE_DONE} fade_state;
+ uint8_t color_rgba[4]; ///< fade color
+ int black_fade; ///< if color_rgba is black
} FadeContext;
static av_cold int init(AVFilterContext *ctx)
(s->duration / (double)AV_TIME_BASE),s->alpha);
}
+ s->black_fade = !memcmp(s->color_rgba, "\x00\x00\x00\xff", 4);
return 0;
}
static int query_formats(AVFilterContext *ctx)
{
+ const FadeContext *s = ctx->priv;
static const enum AVPixelFormat pix_fmts[] = {
AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
AV_PIX_FMT_NONE
};
+ static const enum AVPixelFormat pix_fmts_rgb[] = {
+ AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
+ AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
+ AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
+ AV_PIX_FMT_NONE
+ };
- ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
+ if (s->black_fade)
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
+ else
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts_rgb));
return 0;
}
return 0;
}
+static av_always_inline void filter_rgb(FadeContext *s, const AVFrame *frame,
+ int slice_start, int slice_end,
+ int do_alpha, int step)
+{
+ int i, j;
+ const uint8_t r_idx = s->rgba_map[R];
+ const uint8_t g_idx = s->rgba_map[G];
+ const uint8_t b_idx = s->rgba_map[B];
+ const uint8_t a_idx = s->rgba_map[A];
+ const uint8_t *c = s->color_rgba;
+
+ for (i = slice_start; i < slice_end; i++) {
+ uint8_t *p = frame->data[0] + i * frame->linesize[0];
+ for (j = 0; j < frame->width; j++) {
+#define INTERP(c_name, c_idx) av_clip_uint8(((c[c_idx]<<16) + ((int)p[c_name] - (int)c[c_idx]) * s->factor + (1<<15)) >> 16)
+ p[r_idx] = INTERP(r_idx, 0);
+ p[g_idx] = INTERP(g_idx, 1);
+ p[b_idx] = INTERP(b_idx, 2);
+ if (do_alpha)
+ p[a_idx] = INTERP(a_idx, 3);
+ p += step;
+ }
+ }
+}
+
+static int filter_slice_rgb(AVFilterContext *ctx, void *arg, int jobnr,
+ int nb_jobs)
+{
+ FadeContext *s = ctx->priv;
+ AVFrame *frame = arg;
+ int slice_start = (frame->height * jobnr ) / nb_jobs;
+ int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
+
+ if (s->alpha) filter_rgb(s, frame, slice_start, slice_end, 1, 4);
+ else if (s->bpp == 3) filter_rgb(s, frame, slice_start, slice_end, 0, 3);
+ else if (s->bpp == 4) filter_rgb(s, frame, slice_start, slice_end, 0, 4);
+ else av_assert0(0);
+
+ return 0;
+}
+
static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr,
int nb_jobs)
{
// Calculate Fade assuming this is a Fade In
if (s->fade_state == VF_FADE_WAITING) {
s->factor=0;
- if ((frame_timestamp >= (s->start_time/(double)AV_TIME_BASE))
- && (s->frame_index >= s->start_frame)) {
+ if (frame_timestamp >= s->start_time/(double)AV_TIME_BASE
+ && inlink->frame_count >= s->start_frame) {
// Time to start fading
s->fade_state = VF_FADE_FADING;
// Save start time in case we are starting based on frames and fading based on time
- if ((s->start_time == 0) && (s->start_frame != 0)) {
+ if (s->start_time == 0 && s->start_frame != 0) {
s->start_time = frame_timestamp*(double)AV_TIME_BASE;
}
// Save start frame in case we are starting based on time and fading based on frames
- if ((s->start_time != 0) && (s->start_frame == 0)) {
- s->start_frame = s->frame_index;
+ if (s->start_time != 0 && s->start_frame == 0) {
+ s->start_frame = inlink->frame_count;
}
}
}
if (s->fade_state == VF_FADE_FADING) {
if (s->duration == 0) {
// Fading based on frame count
- s->factor = (s->frame_index - s->start_frame) * s->fade_per_frame;
- if (s->frame_index > (s->start_frame + s->nb_frames)) {
+ s->factor = (inlink->frame_count - s->start_frame) * s->fade_per_frame;
+ if (inlink->frame_count > s->start_frame + s->nb_frames) {
s->fade_state = VF_FADE_DONE;
}
} else {
// Fading based on duration
- s->factor = (frame_timestamp - (s->start_time/(double)AV_TIME_BASE))
+ s->factor = (frame_timestamp - s->start_time/(double)AV_TIME_BASE)
* (float) UINT16_MAX / (s->duration/(double)AV_TIME_BASE);
- if (frame_timestamp > ((s->start_time/(double)AV_TIME_BASE)
- + (s->duration/(double)AV_TIME_BASE))) {
+ if (frame_timestamp > s->start_time/(double)AV_TIME_BASE
+ + s->duration/(double)AV_TIME_BASE) {
s->fade_state = VF_FADE_DONE;
}
}
s->factor = av_clip_uint16(s->factor);
// Invert fade_factor if Fading Out
- if (s->type == 1) {
+ if (s->type == FADE_OUT) {
s->factor=UINT16_MAX-s->factor;
}
if (s->alpha) {
ctx->internal->execute(ctx, filter_slice_alpha, frame, NULL,
FFMIN(frame->height, ctx->graph->nb_threads));
+ } else if (s->is_packed_rgb && !s->black_fade) {
+ ctx->internal->execute(ctx, filter_slice_rgb, frame, NULL,
+ FFMIN(frame->height, ctx->graph->nb_threads));
} else {
- /* luma or rgb plane */
+ /* luma, or rgb plane in case of black */
ctx->internal->execute(ctx, filter_slice_luma, frame, NULL,
FFMIN(frame->height, ctx->graph->nb_threads));
}
}
- s->frame_index++;
-
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
{ "d", "Duration of the effect in seconds.",
OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
+ { "color", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, FLAGS },
+ { "c", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, CHAR_MIN, CHAR_MAX, FLAGS },
{ NULL }
};
projects / ffmpeg / blobdiff