diff options
Diffstat (limited to 'sub/ass_mp.c')
| -rw-r--r-- | sub/ass_mp.c | 259 |
1 files changed, 228 insertions, 31 deletions
diff --git a/sub/ass_mp.c b/sub/ass_mp.c index 2f9b39740f..84a706b681 100644 --- a/sub/ass_mp.c +++ b/sub/ass_mp.c @@ -32,9 +32,12 @@ #include "common/msg.h" #include "options/path.h" #include "ass_mp.h" +#include "img_convert.h" #include "osd.h" #include "stream/stream.h" #include "options/options.h" +#include "video/out/bitmap_packer.h" +#include "video/mp_image.h" // res_y should be track->PlayResY // It determines scaling of font sizes and more. @@ -97,37 +100,6 @@ void mp_ass_configure_fonts(ASS_Renderer *priv, struct osd_style_opts *opts, talloc_free(tmp); } -void mp_ass_render_frame(ASS_Renderer *renderer, ASS_Track *track, double time, - struct sub_bitmaps *res) -{ - int changed; - ASS_Image *imgs = ass_render_frame(renderer, track, time, &changed); - if (changed) - res->change_id++; - assert(res->format == 0 || res->format == SUBBITMAP_LIBASS); - res->format = SUBBITMAP_LIBASS; - - int num_parts_alloc = MP_TALLOC_AVAIL(res->parts); - for (struct ass_image *img = imgs; img; img = img->next) { - if (img->w == 0 || img->h == 0) - continue; - if (res->num_parts >= num_parts_alloc) { - num_parts_alloc = MPMAX(num_parts_alloc * 2, 32); - res->parts = talloc_realloc(NULL, res->parts, struct sub_bitmap, - num_parts_alloc); - } - struct sub_bitmap *p = &res->parts[res->num_parts]; - p->bitmap = img->bitmap; - p->stride = img->stride; - p->libass.color = img->color; - p->dw = p->w = img->w; - p->dh = p->h = img->h; - p->x = img->dst_x; - p->y = img->dst_y; - res->num_parts++; - } -} - static const int map_ass_level[] = { MSGL_ERR, // 0 "FATAL errors" MSGL_WARN, @@ -177,3 +149,228 @@ void mp_ass_flush_old_events(ASS_Track *track, long long ts) track->events[i] = track->events[i+n]; } } + +static void draw_ass_rgba(unsigned char *src, int src_w, int src_h, + int src_stride, unsigned char *dst, size_t dst_stride, + int dst_x, int dst_y, uint32_t color) +{ + const unsigned int r = (color >> 24) & 0xff; + const unsigned int g = (color >> 16) & 0xff; + const unsigned int b = (color >> 8) & 0xff; + const unsigned int a = 0xff - (color & 0xff); + + dst += dst_y * dst_stride + dst_x * 4; + + for (int y = 0; y < src_h; y++, dst += dst_stride, src += src_stride) { + uint32_t *dstrow = (uint32_t *) dst; + for (int x = 0; x < src_w; x++) { + const unsigned int v = src[x]; + int rr = (r * a * v); + int gg = (g * a * v); + int bb = (b * a * v); + int aa = a * v; + uint32_t dstpix = dstrow[x]; + unsigned int dstb = dstpix & 0xFF; + unsigned int dstg = (dstpix >> 8) & 0xFF; + unsigned int dstr = (dstpix >> 16) & 0xFF; + unsigned int dsta = (dstpix >> 24) & 0xFF; + dstb = (bb + dstb * (255 * 255 - aa)) / (255 * 255); + dstg = (gg + dstg * (255 * 255 - aa)) / (255 * 255); + dstr = (rr + dstr * (255 * 255 - aa)) / (255 * 255); + dsta = (aa * 255 + dsta * (255 * 255 - aa)) / (255 * 255); + dstrow[x] = dstb | (dstg << 8) | (dstr << 16) | (dsta << 24); + } + } +} + +struct mp_ass_packer { + struct sub_bitmap *cached_parts; // only for the array memory + struct mp_image *cached_img; + struct sub_bitmaps cached_subs; + bool cached_subs_valid; + struct sub_bitmap rgba_imgs[MP_SUB_BB_LIST_MAX]; + struct bitmap_packer *packer; +}; + +// Free with talloc_free(). +struct mp_ass_packer *mp_ass_packer_alloc(void *ta_parent) +{ + struct mp_ass_packer *p = talloc_zero(ta_parent, struct mp_ass_packer); + p->packer = talloc_zero(p, struct bitmap_packer); + return p; +} + +static bool pack(struct mp_ass_packer *p, struct sub_bitmaps *res, int imgfmt) +{ + packer_set_size(p->packer, res->num_parts); + + for (int n = 0; n < res->num_parts; n++) + p->packer->in[n] = (struct pos){res->parts[n].w, res->parts[n].h}; + + if (p->packer->count == 0 || packer_pack(p->packer) < 0) + return false; + + struct pos bb[2]; + packer_get_bb(p->packer, bb); + + res->packed_w = bb[1].x; + res->packed_h = bb[1].y; + + if (!p->cached_img || p->cached_img->w < res->packed_w || + p->cached_img->h < res->packed_h) + { + talloc_free(p->cached_img); + p->cached_img = mp_image_alloc(imgfmt, p->packer->w, p->packer->h); + if (!p->cached_img) + return false; + talloc_steal(p, p->cached_img); + } + + res->packed = p->cached_img; + + for (int n = 0; n < res->num_parts; n++) { + struct sub_bitmap *b = &res->parts[n]; + struct pos pos = p->packer->result[n]; + + b->src_x = pos.x; + b->src_y = pos.y; + } + + return true; +} + +static bool pack_libass(struct mp_ass_packer *p, struct sub_bitmaps *res) +{ + if (!pack(p, res, IMGFMT_Y8)) + return false; + + for (int n = 0; n < res->num_parts; n++) { + struct sub_bitmap *b = &res->parts[n]; + + int stride = res->packed->stride[0]; + void *pdata = + (uint8_t *)res->packed->planes[0] + b->src_y * stride + b->src_x; + memcpy_pic(pdata, b->bitmap, b->w, b->h, stride, b->stride); + + b->bitmap = pdata; + b->stride = stride; + } + + return true; +} + +static bool pack_rgba(struct mp_ass_packer *p, struct sub_bitmaps *res) +{ + struct mp_rect bb_list[MP_SUB_BB_LIST_MAX]; + int num_bb = mp_get_sub_bb_list(res, bb_list, MP_SUB_BB_LIST_MAX); + + struct sub_bitmaps imgs = { + .change_id = res->change_id, + .format = SUBBITMAP_RGBA, + .parts = p->rgba_imgs, + .num_parts = num_bb, + }; + + for (int n = 0; n < imgs.num_parts; n++) { + imgs.parts[n].w = bb_list[n].x1 - bb_list[n].x0; + imgs.parts[n].h = bb_list[n].y1 - bb_list[n].y0; + } + + if (!pack(p, &imgs, IMGFMT_BGRA)) + return false; + + for (int n = 0; n < num_bb; n++) { + struct mp_rect bb = bb_list[n]; + struct sub_bitmap *b = &imgs.parts[n]; + + b->x = bb.x0; + b->y = bb.y0; + b->w = b->dw = bb.x1 - bb.x0; + b->h = b->dh = bb.y1 - bb.y0; + b->stride = imgs.packed->stride[0]; + b->bitmap = (uint8_t *)imgs.packed->planes[0] + + b->stride * b->src_y + b->src_x * 4; + + memset_pic(b->bitmap, 0, b->w * 4, b->h, b->stride); + + for (int i = 0; i < res->num_parts; i++) { + struct sub_bitmap *s = &res->parts[i]; + + // Assume mp_get_sub_bb_list() never splits sub bitmaps + // So we don't clip/adjust the size of the sub bitmap + if (s->x > bb.x1 || s->x + s->w < bb.x0 || + s->y > bb.y1 || s->y + s->h < bb.y0) + continue; + + draw_ass_rgba(s->bitmap, s->w, s->h, s->stride, + b->bitmap, b->stride, + s->x - bb.x0, s->y - bb.y0, + s->libass.color); + } + } + + *res = imgs; + return true; +} + +// Pack the contents of image_lists[0] to image_lists[num_image_lists-1] into +// a single image, and make *out point to it. *out is completely overwritten. +// If libass reported any change, image_lists_changed must be set (it then +// repacks all images). preferred_osd_format can be set to a desired +// sub_bitmap_format. Currently, only SUBBITMAP_LIBASS is supported. +void mp_ass_packer_pack(struct mp_ass_packer *p, ASS_Image **image_lists, + int num_image_lists, bool image_lists_changed, + int preferred_osd_format, struct sub_bitmaps *out) +{ + int format = preferred_osd_format == SUBBITMAP_RGBA ? SUBBITMAP_RGBA + : SUBBITMAP_LIBASS; + + if (p->cached_subs_valid && !image_lists_changed && + p->cached_subs.format == format) + { + *out = p->cached_subs; + return; + } + + *out = (struct sub_bitmaps){.change_id = 1}; + p->cached_subs_valid = false; + + struct sub_bitmaps res = { + .change_id = image_lists_changed, + .format = SUBBITMAP_LIBASS, + .parts = p->cached_parts, + }; + + for (int n = 0; n < num_image_lists; n++) { + for (struct ass_image *img = image_lists[n]; img; img = img->next) { + if (img->w == 0 || img->h == 0) + continue; + MP_TARRAY_GROW(p, p->cached_parts, res.num_parts); + res.parts = p->cached_parts; + struct sub_bitmap *b = &res.parts[res.num_parts]; + b->bitmap = img->bitmap; + b->stride = img->stride; + b->libass.color = img->color; + b->dw = b->w = img->w; + b->dh = b->h = img->h; + b->x = img->dst_x; + b->y = img->dst_y; + res.num_parts++; + } + } + + bool r = false; + if (format == SUBBITMAP_RGBA) { + r = pack_rgba(p, &res); + } else { + r = pack_libass(p, &res); + } + + if (!r) + return; + + *out = res; + p->cached_subs = res; + p->cached_subs.change_id = 0; + p->cached_subs_valid = true; +} |