64                                WebPAnimDecoder* const dec) {  in ApplyDecoderOptions()  argument
66   WebPDecoderConfig* config = &dec->config_;  in ApplyDecoderOptions()
74   dec->blend_func_ = (mode == MODE_RGBA || mode == MODE_BGRA)  in ApplyDecoderOptions()
89   WebPAnimDecoder* dec = NULL;  in WebPAnimDecoderNewInternal()  local
96   dec = (WebPAnimDecoder*)WebPSafeCalloc(1ULL, sizeof(*dec));  in WebPAnimDecoderNewInternal()
97   if (dec == NULL) goto Error;  in WebPAnimDecoderNewInternal()
104   if (!ApplyDecoderOptions(&options, dec)) goto Error;  in WebPAnimDecoderNewInternal()
106   dec->demux_ = WebPDemux(webp_data);  in WebPAnimDecoderNewInternal()
107   if (dec->demux_ == NULL) goto Error;  in WebPAnimDecoderNewInternal()
109   dec->info_.canvas_width = WebPDemuxGetI(dec->demux_, WEBP_FF_CANVAS_WIDTH);  in WebPAnimDecoderNewInternal()
110   dec->info_.canvas_height = WebPDemuxGetI(dec->demux_, WEBP_FF_CANVAS_HEIGHT);  in WebPAnimDecoderNewInternal()
111   dec->info_.loop_count = WebPDemuxGetI(dec->demux_, WEBP_FF_LOOP_COUNT);  in WebPAnimDecoderNewInternal()
112   dec->info_.bgcolor = WebPDemuxGetI(dec->demux_, WEBP_FF_BACKGROUND_COLOR);  in WebPAnimDecoderNewInternal()
113   dec->info_.frame_count = WebPDemuxGetI(dec->demux_, WEBP_FF_FRAME_COUNT);  in WebPAnimDecoderNewInternal()
116   dec->curr_frame_ = (uint8_t*)WebPSafeCalloc(  in WebPAnimDecoderNewInternal()
117       dec->info_.canvas_width * NUM_CHANNELS, dec->info_.canvas_height);  in WebPAnimDecoderNewInternal()
118   if (dec->curr_frame_ == NULL) goto Error;  in WebPAnimDecoderNewInternal()
119   dec->prev_frame_disposed_ = (uint8_t*)WebPSafeCalloc(  in WebPAnimDecoderNewInternal()
120       dec->info_.canvas_width * NUM_CHANNELS, dec->info_.canvas_height);  in WebPAnimDecoderNewInternal()
121   if (dec->prev_frame_disposed_ == NULL) goto Error;  in WebPAnimDecoderNewInternal()
123   WebPAnimDecoderReset(dec);  in WebPAnimDecoderNewInternal()
124   return dec;  in WebPAnimDecoderNewInternal()
127   WebPAnimDecoderDelete(dec);  in WebPAnimDecoderNewInternal()
131 int WebPAnimDecoderGetInfo(const WebPAnimDecoder* dec, WebPAnimInfo* info) {  in WebPAnimDecoderGetInfo()  argument
132   if (dec == NULL || info == NULL) return 0;  in WebPAnimDecoderGetInfo()
133   *info = dec->info_;  in WebPAnimDecoderGetInfo()
309 int WebPAnimDecoderGetNext(WebPAnimDecoder* dec,  in WebPAnimDecoderGetNext()  argument
318   if (dec == NULL || buf_ptr == NULL || timestamp_ptr == NULL) return 0;  in WebPAnimDecoderGetNext()
319   if (!WebPAnimDecoderHasMoreFrames(dec)) return 0;  in WebPAnimDecoderGetNext()
321   width = dec->info_.canvas_width;  in WebPAnimDecoderGetNext()
322   height = dec->info_.canvas_height;  in WebPAnimDecoderGetNext()
323   blend_row = dec->blend_func_;  in WebPAnimDecoderGetNext()
326   if (!WebPDemuxGetFrame(dec->demux_, dec->next_frame_, &iter)) {  in WebPAnimDecoderGetNext()
329   timestamp = dec->prev_frame_timestamp_ + iter.duration;  in WebPAnimDecoderGetNext()
332   is_key_frame = IsKeyFrame(&iter, &dec->prev_iter_,  in WebPAnimDecoderGetNext()
333                             dec->prev_frame_was_keyframe_, width, height);  in WebPAnimDecoderGetNext()
335     if (!ZeroFillCanvas(dec->curr_frame_, width, height)) {  in WebPAnimDecoderGetNext()
339     if (!CopyCanvas(dec->prev_frame_disposed_, dec->curr_frame_,  in WebPAnimDecoderGetNext()
351     WebPDecoderConfig* const config = &dec->config_;  in WebPAnimDecoderGetNext()
355     buf->rgba = dec->curr_frame_ + out_offset;  in WebPAnimDecoderGetNext()
368     if (dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_NONE) {  in WebPAnimDecoderGetNext()
374         blend_row((uint32_t*)dec->curr_frame_ + offset,  in WebPAnimDecoderGetNext()
375                   (uint32_t*)dec->prev_frame_disposed_ + offset, iter.width);  in WebPAnimDecoderGetNext()
379       assert(dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND);  in WebPAnimDecoderGetNext()
387         FindBlendRangeAtRow(&iter, &dec->prev_iter_, canvas_y, &left1, &width1,  in WebPAnimDecoderGetNext()
391           blend_row((uint32_t*)dec->curr_frame_ + offset1,  in WebPAnimDecoderGetNext()
392                     (uint32_t*)dec->prev_frame_disposed_ + offset1, width1);  in WebPAnimDecoderGetNext()
396           blend_row((uint32_t*)dec->curr_frame_ + offset2,  in WebPAnimDecoderGetNext()
397                     (uint32_t*)dec->prev_frame_disposed_ + offset2, width2);  in WebPAnimDecoderGetNext()
404   dec->prev_frame_timestamp_ = timestamp;  in WebPAnimDecoderGetNext()
405   WebPDemuxReleaseIterator(&dec->prev_iter_);  in WebPAnimDecoderGetNext()
406   dec->prev_iter_ = iter;  in WebPAnimDecoderGetNext()
407   dec->prev_frame_was_keyframe_ = is_key_frame;  in WebPAnimDecoderGetNext()
408   CopyCanvas(dec->curr_frame_, dec->prev_frame_disposed_, width, height);  in WebPAnimDecoderGetNext()
409   if (dec->prev_iter_.dispose_method == WEBP_MUX_DISPOSE_BACKGROUND) {  in WebPAnimDecoderGetNext()
410     ZeroFillFrameRect(dec->prev_frame_disposed_, width * NUM_CHANNELS,  in WebPAnimDecoderGetNext()
411                       dec->prev_iter_.x_offset, dec->prev_iter_.y_offset,  in WebPAnimDecoderGetNext()
412                       dec->prev_iter_.width, dec->prev_iter_.height);  in WebPAnimDecoderGetNext()
414   ++dec->next_frame_;  in WebPAnimDecoderGetNext()
417   *buf_ptr = dec->curr_frame_;  in WebPAnimDecoderGetNext()
426 int WebPAnimDecoderHasMoreFrames(const WebPAnimDecoder* dec) {  in WebPAnimDecoderHasMoreFrames()  argument
427   if (dec == NULL) return 0;  in WebPAnimDecoderHasMoreFrames()
428   return (dec->next_frame_ <= (int)dec->info_.frame_count);  in WebPAnimDecoderHasMoreFrames()
431 void WebPAnimDecoderReset(WebPAnimDecoder* dec) {  in WebPAnimDecoderReset()  argument
432   if (dec != NULL) {  in WebPAnimDecoderReset()
433     dec->prev_frame_timestamp_ = 0;  in WebPAnimDecoderReset()
434     WebPDemuxReleaseIterator(&dec->prev_iter_);  in WebPAnimDecoderReset()
435     memset(&dec->prev_iter_, 0, sizeof(dec->prev_iter_));  in WebPAnimDecoderReset()
436     dec->prev_frame_was_keyframe_ = 0;  in WebPAnimDecoderReset()
437     dec->next_frame_ = 1;  in WebPAnimDecoderReset()
441 const WebPDemuxer* WebPAnimDecoderGetDemuxer(const WebPAnimDecoder* dec) {  in WebPAnimDecoderGetDemuxer()  argument
442   if (dec == NULL) return NULL;  in WebPAnimDecoderGetDemuxer()
443   return dec->demux_;  in WebPAnimDecoderGetDemuxer()
446 void WebPAnimDecoderDelete(WebPAnimDecoder* dec) {  in WebPAnimDecoderDelete()  argument
447   if (dec != NULL) {  in WebPAnimDecoderDelete()
448     WebPDemuxReleaseIterator(&dec->prev_iter_);  in WebPAnimDecoderDelete()
449     WebPDemuxDelete(dec->demux_);  in WebPAnimDecoderDelete()
450     WebPSafeFree(dec->curr_frame_);  in WebPAnimDecoderDelete()
451     WebPSafeFree(dec->prev_frame_disposed_);  in WebPAnimDecoderDelete()
452     WebPSafeFree(dec);  in WebPAnimDecoderDelete()