76 int MuxImageFinalize(WebPMuxImage* const wpi) {  in MuxImageFinalize()  argument
77   const WebPChunk* const img = wpi->img_;  in MuxImageFinalize()
88     if (is_lossless && (wpi->alpha_ != NULL)) {  in MuxImageFinalize()
89       ChunkDelete(wpi->alpha_);  in MuxImageFinalize()
90       wpi->alpha_ = NULL;  in MuxImageFinalize()
92     wpi->width_ = w;  in MuxImageFinalize()
93     wpi->height_ = h;  in MuxImageFinalize()
94     wpi->has_alpha_ = vp8l_has_alpha || (wpi->alpha_ != NULL);  in MuxImageFinalize()
100                          WebPMuxImage* const wpi) {  in MuxImageParse()  argument
106   WebPChunk** unknown_chunk_list = &wpi->unknown_;  in MuxImageParse()
110   assert(!wpi->is_partial_);  in MuxImageParse()
121   ChunkSetHead(&subchunk, &wpi->header_);  in MuxImageParse()
122   wpi->is_partial_ = 1;  // Waiting for ALPH and/or VP8/VP8L chunks.  in MuxImageParse()
137         if (wpi->alpha_ != NULL) goto Fail;  // Consecutive ALPH chunks.  in MuxImageParse()
138         if (ChunkSetHead(&subchunk, &wpi->alpha_) != WEBP_MUX_OK) goto Fail;  in MuxImageParse()
139         wpi->is_partial_ = 1;  // Waiting for a VP8 chunk.  in MuxImageParse()
142         if (wpi->img_ != NULL) goto Fail;  // Only 1 image chunk allowed.  in MuxImageParse()
143         if (ChunkSetHead(&subchunk, &wpi->img_) != WEBP_MUX_OK) goto Fail;  in MuxImageParse()
144         if (!MuxImageFinalize(wpi)) goto Fail;  in MuxImageParse()
145         wpi->is_partial_ = 0;  // wpi is completely filled.  in MuxImageParse()
148         if (wpi->is_partial_) {  in MuxImageParse()
164   if (wpi->is_partial_) goto Fail;  in MuxImageParse()
181   WebPMuxImage* wpi = NULL;  in WebPMuxCreateInternal()  local
233   wpi = (WebPMuxImage*)WebPSafeMalloc(1ULL, sizeof(*wpi));  in WebPMuxCreateInternal()
234   if (wpi == NULL) goto Err;  in WebPMuxCreateInternal()
235   MuxImageInit(wpi);  in WebPMuxCreateInternal()
249         if (wpi->alpha_ != NULL) goto Err;  // Consecutive ALPH chunks.  in WebPMuxCreateInternal()
250         if (ChunkSetHead(&chunk, &wpi->alpha_) != WEBP_MUX_OK) goto Err;  in WebPMuxCreateInternal()
251         wpi->is_partial_ = 1;  // Waiting for a VP8 chunk.  in WebPMuxCreateInternal()
254         if (ChunkSetHead(&chunk, &wpi->img_) != WEBP_MUX_OK) goto Err;  in WebPMuxCreateInternal()
255         if (!MuxImageFinalize(wpi)) goto Err;  in WebPMuxCreateInternal()
256         wpi->is_partial_ = 0;  // wpi is completely filled.  in WebPMuxCreateInternal()
259         if (MuxImagePush(wpi, &mux->images_) != WEBP_MUX_OK) goto Err;  in WebPMuxCreateInternal()
260         MuxImageInit(wpi);  // Reset for reading next image.  in WebPMuxCreateInternal()
263         if (wpi->is_partial_) goto Err;  // Previous wpi is still incomplete.  in WebPMuxCreateInternal()
264         if (!MuxImageParse(&chunk, copy_data, wpi)) goto Err;  in WebPMuxCreateInternal()
269         if (wpi->is_partial_) goto Err;  // Encountered a non-image chunk before  in WebPMuxCreateInternal()
289   if (wpi->is_partial_) goto Err;  in WebPMuxCreateInternal()
294   MuxImageDelete(wpi);  in WebPMuxCreateInternal()
299   MuxImageDelete(wpi);  in WebPMuxCreateInternal()
340     const WebPMuxImage* const wpi = mux->images_;  in MuxGetCanvasInfo()  local
346       assert(wpi != NULL);  in MuxGetCanvasInfo()
347       w = wpi->width_;  in MuxGetCanvasInfo()
348       h = wpi->height_;  in MuxGetCanvasInfo()
350     if (wpi != NULL) {  in MuxGetCanvasInfo()
351       if (wpi->has_alpha_) f |= ALPHA_FLAG;  in MuxGetCanvasInfo()
389 static WebPMuxError SynthesizeBitstream(const WebPMuxImage* const wpi,  in SynthesizeBitstream()  argument
394   const int need_vp8x = (wpi->alpha_ != NULL);  in SynthesizeBitstream()
396   const size_t alpha_size = need_vp8x ? ChunkDiskSize(wpi->alpha_) : 0;  in SynthesizeBitstream()
399                       ChunkDiskSize(wpi->img_);  in SynthesizeBitstream()
404   assert(wpi->alpha_ == NULL || wpi->alpha_->next_ == NULL);  in SynthesizeBitstream()
405   assert(wpi->img_ != NULL && wpi->img_->next_ == NULL);  in SynthesizeBitstream()
411     dst = EmitVP8XChunk(dst, wpi->width_, wpi->height_, ALPHA_FLAG);  // VP8X.  in SynthesizeBitstream()
412     dst = ChunkListEmit(wpi->alpha_, dst);       // ALPH.  in SynthesizeBitstream()
416   dst = ChunkListEmit(wpi->img_, dst);  in SynthesizeBitstream()
445 static WebPMuxError MuxGetImageInternal(const WebPMuxImage* const wpi,  in MuxGetImageInternal()  argument
454   info->id = ChunkGetIdFromTag(wpi->img_->tag_);  in MuxGetImageInternal()
455   return SynthesizeBitstream(wpi, &info->bitstream);  in MuxGetImageInternal()
458 static WebPMuxError MuxGetFrameInternal(const WebPMuxImage* const wpi,  in MuxGetFrameInternal()  argument
460   const int is_frame = (wpi->header_->tag_ == kChunks[IDX_ANMF].tag);  in MuxGetFrameInternal()
463   assert(wpi->header_ != NULL);  // Already checked by WebPMuxGetFrame().  in MuxGetFrameInternal()
465   frame_data = &wpi->header_->data_;  in MuxGetFrameInternal()
477   frame->id = ChunkGetIdFromTag(wpi->header_->tag_);  in MuxGetFrameInternal()
478   return SynthesizeBitstream(wpi, &frame->bitstream);  in MuxGetFrameInternal()
484   WebPMuxImage* wpi;  in WebPMuxGetFrame()  local
492   err = MuxImageGetNth((const WebPMuxImage**)&mux->images_, nth, &wpi);  in WebPMuxGetFrame()
496   if (wpi->header_ == NULL) {  in WebPMuxGetFrame()
497     return MuxGetImageInternal(wpi, frame);  in WebPMuxGetFrame()
499     return MuxGetFrameInternal(wpi, frame);  in WebPMuxGetFrame()