diff options
Diffstat (limited to 'source/blender/sequencer/intern/render.c')
| -rw-r--r-- | source/blender/sequencer/intern/render.c | 184 |
1 files changed, 183 insertions, 1 deletions
diff --git a/source/blender/sequencer/intern/render.c b/source/blender/sequencer/intern/render.c index e42a3f4d6e9..b2642228c91 100644 --- a/source/blender/sequencer/intern/render.c +++ b/source/blender/sequencer/intern/render.c @@ -434,6 +434,31 @@ static void sequencer_image_crop_init(const Sequence *seq, BLI_rctf_init(r_crop, left, in->x - right, bottom, in->y - top); } +static void sequencer_thumbnail_transform(ImBuf *in, ImBuf *out) +{ + float image_scale_factor = (float)out->x / in->x; + float transform_matrix[3][3]; + + /* Set to keep same loc,scale,rot but change scale to thumb size limit. */ + const float scale_x = 1 * image_scale_factor; + const float scale_y = 1 * image_scale_factor; + const float image_center_offs_x = (out->x - in->x) / 2; + const float image_center_offs_y = (out->y - in->y) / 2; + const float pivot[2] = {in->x / 2, in->y / 2}; + loc_rot_size_to_mat3(transform_matrix, + (const float[]){image_center_offs_x, image_center_offs_y}, + 0, + (const float[]){scale_x, scale_y}); + transform_pivot_set_m3(transform_matrix, pivot); + invert_m3(transform_matrix); + + /* No crop. */ + rctf source_crop; + BLI_rctf_init(&source_crop, 0, in->x, 0, in->y); + + IMB_transform(in, out, transform_matrix, &source_crop, IMB_FILTER_NEAREST); +} + static void sequencer_preprocess_transform_crop( ImBuf *in, ImBuf *out, const SeqRenderData *context, Sequence *seq, const bool is_proxy_image) { @@ -1896,7 +1921,164 @@ ImBuf *SEQ_render_give_ibuf_direct(const SeqRenderData *context, seq_render_state_init(&state); ImBuf *ibuf = seq_render_strip(context, &state, seq, timeline_frame); - return ibuf; } + +/* Gets the direct image from source and scales to thumbnail size. */ +static ImBuf *seq_get_uncached_thumbnail(const SeqRenderData *context, + SeqRenderState *state, + Sequence *seq, + float timeline_frame) +{ + bool is_proxy_image = false; + ImBuf *ibuf = do_render_strip_uncached(context, state, seq, timeline_frame, &is_proxy_image); + + if (ibuf == NULL) { + return NULL; + } + + float aspect_ratio = (float)ibuf->x / ibuf->y; + int rectx, recty; + /* Calculate new dimensions - THUMB_SIZE (256) for x or y. */ + if (ibuf->x > ibuf->y) { + rectx = SEQ_RENDER_THUMB_SIZE; + recty = round_fl_to_int(rectx / aspect_ratio); + } + else { + recty = SEQ_RENDER_THUMB_SIZE; + rectx = round_fl_to_int(recty * aspect_ratio); + } + + /* Scale ibuf to thumbnail size. */ + ImBuf *scaled_ibuf = IMB_allocImBuf(rectx, recty, 32, ibuf->rect_float ? IB_rectfloat : IB_rect); + sequencer_thumbnail_transform(ibuf, scaled_ibuf); + seq_imbuf_assign_spaces(context->scene, scaled_ibuf); + IMB_freeImBuf(ibuf); + + return scaled_ibuf; +} + +/* Get cached thumbnails. */ +ImBuf *SEQ_get_thumbnail( + const SeqRenderData *context, Sequence *seq, float timeline_frame, rcti *crop, bool clipped) +{ + ImBuf *ibuf = seq_cache_get(context, seq, roundf(timeline_frame), SEQ_CACHE_STORE_THUMBNAIL); + + if (!clipped || ibuf == NULL) { + return ibuf; + } + + /* Do clipping. */ + ImBuf *ibuf_cropped = IMB_dupImBuf(ibuf); + if (crop->xmin < 0 || crop->ymin < 0) { + crop->xmin = 0; + crop->ymin = 0; + } + if (crop->xmax >= ibuf->x || crop->ymax >= ibuf->y) { + crop->xmax = ibuf->x - 1; + crop->ymax = ibuf->y - 1; + } + IMB_rect_crop(ibuf_cropped, crop); + IMB_freeImBuf(ibuf); + return ibuf_cropped; +} + +/* Render the series of thumbnails and store in cache. */ +void SEQ_render_thumbnails(const SeqRenderData *context, + Sequence *seq, + Sequence *seq_orig, + float start_frame, + float frame_step, + rctf *view_area, + short *stop) +{ + SeqRenderState state; + seq_render_state_init(&state); + + /* Adding the hold offset value (seq->anim_startofs) to the start frame. Position of image not + * affected, but frame loaded affected. */ + start_frame = start_frame - frame_step; + float upper_thumb_bound = (seq->endstill) ? (seq->start + seq->len) : seq->enddisp; + upper_thumb_bound = (upper_thumb_bound > view_area->xmax) ? view_area->xmax + frame_step : + upper_thumb_bound; + + while ((start_frame < upper_thumb_bound) & !*stop) { + ImBuf *ibuf = seq_cache_get( + context, seq_orig, round_fl_to_int(start_frame), SEQ_CACHE_STORE_THUMBNAIL); + if (ibuf) { + IMB_freeImBuf(ibuf); + start_frame += frame_step; + continue; + } + + ibuf = seq_get_uncached_thumbnail(context, &state, seq, round_fl_to_int(start_frame)); + + if (ibuf) { + seq_cache_thumbnail_put(context, seq_orig, round_fl_to_int(start_frame), ibuf, view_area); + IMB_freeImBuf(ibuf); + seq_orig->flag &= ~SEQ_FLAG_SKIP_THUMBNAILS; + } + else { + /* Can not open source file. */ + seq_orig->flag |= SEQ_FLAG_SKIP_THUMBNAILS; + return; + } + + start_frame += frame_step; + } +} + +/* Get frame step for equally spaced thumbnails. These thumbnails should always be present in + * memory, so they can be used when zooming.*/ +int SEQ_render_thumbnails_guaranteed_set_frame_step_get(const Sequence *seq) +{ + const int content_len = (seq->enddisp - seq->startdisp - seq->startstill - seq->endstill); + + /* Arbitrary, but due to performance reasons should be as low as possible. */ + const int thumbnails_base_set_count = min_ii(content_len / 100, 30); + if (thumbnails_base_set_count <= 0) { + return 0; + } + return content_len / thumbnails_base_set_count; +} + +/* Render set of evenly spaced thumbnails that are drawn when zooming. */ +void SEQ_render_thumbnails_base_set( + const SeqRenderData *context, Sequence *seq, Sequence *seq_orig, rctf *view_area, short *stop) +{ + SeqRenderState state; + seq_render_state_init(&state); + + int timeline_frame = seq->startdisp; + const int frame_step = SEQ_render_thumbnails_guaranteed_set_frame_step_get(seq); + + while (timeline_frame < seq->enddisp && !*stop) { + ImBuf *ibuf = seq_cache_get( + context, seq_orig, roundf(timeline_frame), SEQ_CACHE_STORE_THUMBNAIL); + if (ibuf) { + IMB_freeImBuf(ibuf); + + if (frame_step == 0) { + return; + } + + timeline_frame += frame_step; + continue; + } + + ibuf = seq_get_uncached_thumbnail(context, &state, seq, timeline_frame); + + if (ibuf) { + seq_cache_thumbnail_put(context, seq_orig, timeline_frame, ibuf, view_area); + IMB_freeImBuf(ibuf); + } + + if (frame_step == 0) { + return; + } + + timeline_frame += frame_step; + } +} + /** \} */ |