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-rw-r--r--libavfilter/vf_fade.c330
1 files changed, 270 insertions, 60 deletions
diff --git a/libavfilter/vf_fade.c b/libavfilter/vf_fade.c
index eac0c2c9a9..3e6aa7fe87 100644
--- a/libavfilter/vf_fade.c
+++ b/libavfilter/vf_fade.c
@@ -2,20 +2,20 @@
* Copyright (c) 2010 Brandon Mintern
* Copyright (c) 2007 Bobby Bingham
*
- * This file is part of Libav.
+ * This file is part of FFmpeg.
*
- * Libav is free software; you can redistribute it and/or
+ * FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
- * Libav is distributed in the hope that it will be useful,
+ * FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
- * License along with Libav; if not, write to the Free Software
+ * License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
@@ -25,14 +25,27 @@
* 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"
#include "libavutil/opt.h"
#include "libavutil/pixdesc.h"
#include "avfilter.h"
+#include "drawutils.h"
#include "formats.h"
#include "internal.h"
#include "video.h"
+#define R 0
+#define G 1
+#define B 2
+#define A 3
+
+#define Y 0
+#define U 1
+#define V 2
+
#define FADE_IN 0
#define FADE_OUT 1
@@ -41,8 +54,15 @@ typedef struct FadeContext {
int type;
int factor, fade_per_frame;
int start_frame, nb_frames;
- unsigned int frame_index, stop_frame;
int hsub, vsub, bpp;
+ unsigned int black_level, black_level_scaled;
+ uint8_t is_packed_rgb;
+ uint8_t rgba_map[4];
+ 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)
@@ -50,36 +70,87 @@ static av_cold int init(AVFilterContext *ctx)
FadeContext *s = ctx->priv;
s->fade_per_frame = (1 << 16) / s->nb_frames;
- if (s->type == FADE_IN) {
- s->factor = 0;
- } else if (s->type == FADE_OUT) {
- s->fade_per_frame = -s->fade_per_frame;
- s->factor = (1 << 16);
+ s->fade_state = VF_FADE_WAITING;
+
+ if (s->duration != 0) {
+ // If duration (seconds) is non-zero, assume that we are not fading based on frames
+ s->nb_frames = 0; // Mostly to clean up logging
+ }
+
+ // Choose what to log. If both time-based and frame-based options, both lines will be in the log
+ if (s->start_frame || s->nb_frames) {
+ av_log(ctx, AV_LOG_VERBOSE,
+ "type:%s start_frame:%d nb_frames:%d alpha:%d\n",
+ s->type == FADE_IN ? "in" : "out", s->start_frame,
+ s->nb_frames,s->alpha);
+ }
+ if (s->start_time || s->duration) {
+ av_log(ctx, AV_LOG_VERBOSE,
+ "type:%s start_time:%f duration:%f alpha:%d\n",
+ s->type == FADE_IN ? "in" : "out", (s->start_time / (double)AV_TIME_BASE),
+ (s->duration / (double)AV_TIME_BASE),s->alpha);
}
- s->stop_frame = s->start_frame + s->nb_frames;
- av_log(ctx, AV_LOG_VERBOSE,
- "type:%s start_frame:%d nb_frames:%d\n",
- s->type == FADE_IN ? "in" : "out", s->start_frame,
- s->nb_frames);
+ 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_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
+ AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
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
};
+ 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
+ };
+ static const enum AVPixelFormat pix_fmts_alpha[] = {
+ AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
+ AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
+ AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
+ AV_PIX_FMT_NONE
+ };
+ static const enum AVPixelFormat pix_fmts_rgba[] = {
+ AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
+ AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
+ AV_PIX_FMT_NONE
+ };
+ AVFilterFormats *fmts_list;
- ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
- return 0;
+ if (s->alpha) {
+ if (s->black_fade)
+ fmts_list = ff_make_format_list(pix_fmts_alpha);
+ else
+ fmts_list = ff_make_format_list(pix_fmts_rgba);
+ } else {
+ if (s->black_fade)
+ fmts_list = ff_make_format_list(pix_fmts);
+ else
+ fmts_list = ff_make_format_list(pix_fmts_rgb);
+ }
+ if (!fmts_list)
+ return AVERROR(ENOMEM);
+ return ff_set_common_formats(ctx, fmts_list);
}
+const static enum AVPixelFormat studio_level_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_YUV440P,
+ AV_PIX_FMT_NONE
+};
+
static int config_props(AVFilterLink *inlink)
{
FadeContext *s = inlink->dst->priv;
@@ -88,7 +159,59 @@ static int config_props(AVFilterLink *inlink)
s->hsub = pixdesc->log2_chroma_w;
s->vsub = pixdesc->log2_chroma_h;
- s->bpp = av_get_bits_per_pixel(pixdesc) >> 3;
+ s->bpp = pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR ?
+ 1 :
+ av_get_bits_per_pixel(pixdesc) >> 3;
+ s->alpha &= !!(pixdesc->flags & AV_PIX_FMT_FLAG_ALPHA);
+ s->is_packed_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
+
+ /* use CCIR601/709 black level for studio-level pixel non-alpha components */
+ s->black_level =
+ ff_fmt_is_in(inlink->format, studio_level_pix_fmts) && !s->alpha ? 16 : 0;
+ /* 32768 = 1 << 15, it is an integer representation
+ * of 0.5 and is for rounding. */
+ s->black_level_scaled = (s->black_level << 16) + 32768;
+ 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;
}
@@ -97,9 +220,8 @@ static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr,
{
FadeContext *s = ctx->priv;
AVFrame *frame = arg;
- int slice_h = frame->height / nb_jobs;
- int slice_start = jobnr * slice_h;
- int slice_end = (jobnr == nb_jobs - 1) ? frame->height : (jobnr + 1) * slice_h;
+ int slice_start = (frame->height * jobnr ) / nb_jobs;
+ int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
int i, j;
for (i = slice_start; i < slice_end; i++) {
@@ -108,7 +230,7 @@ static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr,
/* s->factor is using 16 lower-order bits for decimal
* places. 32768 = 1 << 15, it is an integer representation
* of 0.5 and is for rounding. */
- *p = (*p * s->factor + 32768) >> 16;
+ *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
p++;
}
}
@@ -121,15 +243,16 @@ static int filter_slice_chroma(AVFilterContext *ctx, void *arg, int jobnr,
{
FadeContext *s = ctx->priv;
AVFrame *frame = arg;
- int slice_h = FFALIGN(frame->height / nb_jobs, 1 << s->vsub);
- int slice_start = jobnr * slice_h;
- int slice_end = (jobnr == nb_jobs - 1) ? frame->height : (jobnr + 1) * slice_h;
int i, j, plane;
+ const int width = FF_CEIL_RSHIFT(frame->width, s->hsub);
+ const int height= FF_CEIL_RSHIFT(frame->height, s->vsub);
+ int slice_start = (height * jobnr ) / nb_jobs;
+ int slice_end = (height * (jobnr+1)) / nb_jobs;
for (plane = 1; plane < 3; plane++) {
for (i = slice_start; i < slice_end; i++) {
- uint8_t *p = frame->data[plane] + (i >> s->vsub) * frame->linesize[plane];
- for (j = 0; j < frame->width >> s->hsub; j++) {
+ uint8_t *p = frame->data[plane] + i * frame->linesize[plane];
+ for (j = 0; j < width; j++) {
/* 8421367 = ((128 << 1) + 1) << 15. It is an integer
* representation of 128.5. The .5 is for rounding
* purposes. */
@@ -142,60 +265,148 @@ static int filter_slice_chroma(AVFilterContext *ctx, void *arg, int jobnr,
return 0;
}
+static int filter_slice_alpha(AVFilterContext *ctx, void *arg, int jobnr,
+ int nb_jobs)
+{
+ FadeContext *s = ctx->priv;
+ AVFrame *frame = arg;
+ int plane = s->is_packed_rgb ? 0 : A;
+ int slice_start = (frame->height * jobnr ) / nb_jobs;
+ int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
+ int i, j;
+
+ for (i = slice_start; i < slice_end; i++) {
+ uint8_t *p = frame->data[plane] + i * frame->linesize[plane] + s->is_packed_rgb*s->rgba_map[A];
+ int step = s->is_packed_rgb ? 4 : 1;
+ for (j = 0; j < frame->width; j++) {
+ /* s->factor is using 16 lower-order bits for decimal
+ * places. 32768 = 1 << 15, it is an integer representation
+ * of 0.5 and is for rounding. */
+ *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
+ p += step;
+ }
+ }
+
+ return 0;
+}
+
static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
{
AVFilterContext *ctx = inlink->dst;
FadeContext *s = ctx->priv;
+ double frame_timestamp = frame->pts == AV_NOPTS_VALUE ? -1 : frame->pts * av_q2d(inlink->time_base);
- if (s->factor < UINT16_MAX) {
- /* luma or rgb plane */
- ctx->internal->execute(ctx, filter_slice_luma, frame, NULL,
- FFMIN(frame->height, ctx->graph->nb_threads));
+ // 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
+ && inlink->frame_count >= s->start_frame) {
+ // Time to start fading
+ s->fade_state = VF_FADE_FADING;
- if (frame->data[1] && frame->data[2]) {
- /* chroma planes */
- ctx->internal->execute(ctx, filter_slice_chroma, frame, NULL,
- FFMIN(frame->height, ctx->graph->nb_threads));
+ // 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) {
+ 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 = inlink->frame_count;
+ }
+ }
+ }
+ if (s->fade_state == VF_FADE_FADING) {
+ if (s->duration == 0) {
+ // Fading based on frame count
+ 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)
+ * (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) {
+ s->fade_state = VF_FADE_DONE;
+ }
}
}
+ if (s->fade_state == VF_FADE_DONE) {
+ s->factor=UINT16_MAX;
+ }
- if (s->frame_index >= s->start_frame &&
- s->frame_index <= s->stop_frame)
- s->factor += s->fade_per_frame;
s->factor = av_clip_uint16(s->factor);
- s->frame_index++;
+
+ // Invert fade_factor if Fading Out
+ if (s->type == FADE_OUT) {
+ s->factor=UINT16_MAX-s->factor;
+ }
+
+ if (s->factor < UINT16_MAX) {
+ 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 in case of black */
+ ctx->internal->execute(ctx, filter_slice_luma, frame, NULL,
+ FFMIN(frame->height, ctx->graph->nb_threads));
+
+ if (frame->data[1] && frame->data[2]) {
+ /* chroma planes */
+ ctx->internal->execute(ctx, filter_slice_chroma, frame, NULL,
+ FFMIN(frame->height, ctx->graph->nb_threads));
+ }
+ }
+ }
return ff_filter_frame(inlink->dst->outputs[0], frame);
}
+
#define OFFSET(x) offsetof(FadeContext, x)
-#define FLAGS AV_OPT_FLAG_VIDEO_PARAM
-static const AVOption options[] = {
+#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
+
+static const AVOption fade_options[] = {
{ "type", "'in' or 'out' for fade-in/fade-out", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
+ { "t", "'in' or 'out' for fade-in/fade-out", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
{ "in", "fade-in", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_IN }, .unit = "type" },
{ "out", "fade-out", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_OUT }, .unit = "type" },
{ "start_frame", "Number of the first frame to which to apply the effect.",
OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
+ { "s", "Number of the first frame to which to apply the effect.",
+ OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
{ "nb_frames", "Number of frames to which the effect should be applied.",
- OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 1 }, 0, INT_MAX, FLAGS },
- { NULL },
+ OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, INT_MAX, FLAGS },
+ { "n", "Number of frames to which the effect should be applied.",
+ OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 25 }, 0, INT_MAX, FLAGS },
+ { "alpha", "fade alpha if it is available on the input", OFFSET(alpha), AV_OPT_TYPE_INT, {.i64 = 0 }, 0, 1, FLAGS },
+ { "start_time", "Number of seconds of the beginning of the effect.",
+ OFFSET(start_time), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
+ { "st", "Number of seconds of the beginning of the effect.",
+ OFFSET(start_time), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT32_MAX, FLAGS },
+ { "duration", "Duration of the effect in seconds.",
+ 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 }
};
-static const AVClass fade_class = {
- .class_name = "fade",
- .item_name = av_default_item_name,
- .option = options,
- .version = LIBAVUTIL_VERSION_INT,
-};
+AVFILTER_DEFINE_CLASS(fade);
static const AVFilterPad avfilter_vf_fade_inputs[] = {
{
- .name = "default",
- .type = AVMEDIA_TYPE_VIDEO,
- .config_props = config_props,
- .get_video_buffer = ff_null_get_video_buffer,
- .filter_frame = filter_frame,
- .needs_writable = 1,
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_props,
+ .filter_frame = filter_frame,
+ .needs_writable = 1,
},
{ NULL }
};
@@ -210,13 +421,12 @@ static const AVFilterPad avfilter_vf_fade_outputs[] = {
AVFilter ff_vf_fade = {
.name = "fade",
- .description = NULL_IF_CONFIG_SMALL("Fade in/out input video"),
+ .description = NULL_IF_CONFIG_SMALL("Fade in/out input video."),
.init = init,
.priv_size = sizeof(FadeContext),
.priv_class = &fade_class,
.query_formats = query_formats,
-
- .inputs = avfilter_vf_fade_inputs,
- .outputs = avfilter_vf_fade_outputs,
- .flags = AVFILTER_FLAG_SLICE_THREADS,
+ .inputs = avfilter_vf_fade_inputs,
+ .outputs = avfilter_vf_fade_outputs,
+ .flags = AVFILTER_FLAG_SLICE_THREADS,
};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-06 08:52:42 +0000