|
|
@@ -32,7 +32,6 @@ |
|
|
|
#include "libavutil/imgutils.h" |
|
|
|
#include "libavutil/opt.h" |
|
|
|
#include "libavutil/parseutils.h" |
|
|
|
#include "libavutil/pixdesc.h" |
|
|
|
#include "drawutils.h" |
|
|
|
#include "avfilter.h" |
|
|
|
|
|
|
@@ -41,12 +40,12 @@ typedef struct { |
|
|
|
ASS_Library *library; |
|
|
|
ASS_Renderer *renderer; |
|
|
|
ASS_Track *track; |
|
|
|
int hsub, vsub; |
|
|
|
char *filename; |
|
|
|
uint8_t rgba_map[4]; |
|
|
|
int pix_step[4]; ///< steps per pixel for each plane of the main output |
|
|
|
char *original_size_str; |
|
|
|
int original_w, original_h; |
|
|
|
FFDrawContext draw; |
|
|
|
} AssContext; |
|
|
|
|
|
|
|
#define OFFSET(x) offsetof(AssContext, x) |
|
|
@@ -156,28 +155,15 @@ static av_cold void uninit(AVFilterContext *ctx) |
|
|
|
|
|
|
|
static int query_formats(AVFilterContext *ctx) |
|
|
|
{ |
|
|
|
static const enum PixelFormat pix_fmts[] = { |
|
|
|
PIX_FMT_ARGB, PIX_FMT_RGBA, |
|
|
|
PIX_FMT_ABGR, PIX_FMT_BGRA, |
|
|
|
PIX_FMT_RGB24, PIX_FMT_BGR24, |
|
|
|
PIX_FMT_NONE |
|
|
|
}; |
|
|
|
|
|
|
|
avfilter_set_common_pixel_formats(ctx, avfilter_make_format_list(pix_fmts)); |
|
|
|
|
|
|
|
avfilter_set_common_pixel_formats(ctx, ff_draw_supported_pixel_formats(0)); |
|
|
|
return 0; |
|
|
|
} |
|
|
|
|
|
|
|
static int config_input(AVFilterLink *inlink) |
|
|
|
{ |
|
|
|
AssContext *ass = inlink->dst->priv; |
|
|
|
const AVPixFmtDescriptor *pix_desc = &av_pix_fmt_descriptors[inlink->format]; |
|
|
|
|
|
|
|
av_image_fill_max_pixsteps(ass->pix_step, NULL, pix_desc); |
|
|
|
ff_fill_rgba_map(ass->rgba_map, inlink->format); |
|
|
|
|
|
|
|
ass->hsub = pix_desc->log2_chroma_w; |
|
|
|
ass->vsub = pix_desc->log2_chroma_h; |
|
|
|
ff_draw_init(&ass->draw, inlink->format, 0); |
|
|
|
|
|
|
|
ass_set_frame_size (ass->renderer, inlink->w, inlink->h); |
|
|
|
if (ass->original_w && ass->original_h) |
|
|
@@ -189,47 +175,24 @@ static int config_input(AVFilterLink *inlink) |
|
|
|
|
|
|
|
static void null_draw_slice(AVFilterLink *link, int y, int h, int slice_dir) { } |
|
|
|
|
|
|
|
#define R 0 |
|
|
|
#define G 1 |
|
|
|
#define B 2 |
|
|
|
#define A 3 |
|
|
|
|
|
|
|
#define SET_PIXEL_RGB(picref, rgba_color, val, x, y, pixel_step, r_off, g_off, b_off) { \ |
|
|
|
p = picref->data[0] + (x) * pixel_step + ((y) * picref->linesize[0]); \ |
|
|
|
alpha = rgba_color[A] * (val) * 129; \ |
|
|
|
*(p+r_off) = (alpha * rgba_color[R] + (255*255*129 - alpha) * *(p+r_off)) >> 23; \ |
|
|
|
*(p+g_off) = (alpha * rgba_color[G] + (255*255*129 - alpha) * *(p+g_off)) >> 23; \ |
|
|
|
*(p+b_off) = (alpha * rgba_color[B] + (255*255*129 - alpha) * *(p+b_off)) >> 23; \ |
|
|
|
} |
|
|
|
|
|
|
|
/* libass stores an RGBA color in the format RRGGBBTT, where TT is the transparency level */ |
|
|
|
#define AR(c) ( (c)>>24) |
|
|
|
#define AG(c) (((c)>>16)&0xFF) |
|
|
|
#define AB(c) (((c)>>8) &0xFF) |
|
|
|
#define AA(c) ((0xFF-c) &0xFF) |
|
|
|
|
|
|
|
static void overlay_ass_image(AVFilterBufferRef *picref, const uint8_t *rgba_map, const int pix_step, |
|
|
|
static void overlay_ass_image(AssContext *ass, AVFilterBufferRef *picref, |
|
|
|
const ASS_Image *image) |
|
|
|
{ |
|
|
|
int i, j; |
|
|
|
int alpha; |
|
|
|
uint8_t *p; |
|
|
|
const int ro = rgba_map[R]; |
|
|
|
const int go = rgba_map[G]; |
|
|
|
const int bo = rgba_map[B]; |
|
|
|
|
|
|
|
for (; image; image = image->next) { |
|
|
|
uint8_t rgba_color[] = {AR(image->color), AG(image->color), AB(image->color), AA(image->color)}; |
|
|
|
unsigned char *row = image->bitmap; |
|
|
|
|
|
|
|
for (i = 0; i < image->h; i++) { |
|
|
|
for (j = 0; j < image->w; j++) { |
|
|
|
if (row[j]) { |
|
|
|
SET_PIXEL_RGB(picref, rgba_color, row[j], image->dst_x + j, image->dst_y + i, pix_step, ro, go, bo); |
|
|
|
} |
|
|
|
} |
|
|
|
row += image->stride; |
|
|
|
} |
|
|
|
FFDrawColor color; |
|
|
|
ff_draw_color(&ass->draw, &color, rgba_color); |
|
|
|
ff_blend_mask(&ass->draw, &color, |
|
|
|
picref->data, picref->linesize, |
|
|
|
picref->video->w, picref->video->h, |
|
|
|
image->bitmap, image->stride, image->w, image->h, |
|
|
|
3, 0, image->dst_x, image->dst_y); |
|
|
|
} |
|
|
|
} |
|
|
|
|
|
|
@@ -247,7 +210,7 @@ static void end_frame(AVFilterLink *inlink) |
|
|
|
if (detect_change) |
|
|
|
av_log(ctx, AV_LOG_DEBUG, "Change happened at time ms:%f\n", time_ms); |
|
|
|
|
|
|
|
overlay_ass_image(picref, ass->rgba_map, ass->pix_step[0], image); |
|
|
|
overlay_ass_image(ass, picref, image); |
|
|
|
|
|
|
|
avfilter_draw_slice(outlink, 0, picref->video->h, 1); |
|
|
|
avfilter_end_frame(outlink); |
|
|
|