WebPMuxError WebPMuxAssemble(WebPMux* mux, WebPData* assembled_data) { size_t size = 0; uint8_t* data = NULL; uint8_t* dst = NULL; WebPMuxError err; if (mux == NULL || assembled_data == NULL) { return WEBP_MUX_INVALID_ARGUMENT; } // Finalize mux. err = MuxCleanup(mux); if (err != WEBP_MUX_OK) return err; err = CreateVP8XChunk(mux); if (err != WEBP_MUX_OK) return err; // Allocate data. size = ChunksListDiskSize(mux->vp8x_) + ChunksListDiskSize(mux->iccp_) + ChunksListDiskSize(mux->anim_) + MuxImageListDiskSize(mux->images_) + ChunksListDiskSize(mux->exif_) + ChunksListDiskSize(mux->xmp_) + ChunksListDiskSize(mux->unknown_) + RIFF_HEADER_SIZE; data = (uint8_t*)malloc(size); if (data == NULL) return WEBP_MUX_MEMORY_ERROR; // Emit header & chunks. dst = MuxEmitRiffHeader(data, size); dst = ChunkListEmit(mux->vp8x_, dst); dst = ChunkListEmit(mux->iccp_, dst); dst = ChunkListEmit(mux->anim_, dst); dst = MuxImageListEmit(mux->images_, dst); dst = ChunkListEmit(mux->exif_, dst); dst = ChunkListEmit(mux->xmp_, dst); dst = ChunkListEmit(mux->unknown_, dst); assert(dst == data + size); // Validate mux. err = MuxValidate(mux); if (err != WEBP_MUX_OK) { free(data); data = NULL; size = 0; } // Finalize data. assembled_data->bytes = data; assembled_data->size = size; return err; }
WebPMuxError WebPMuxAssemble(WebPMux* mux, WebPData* assembled_data) { size_t size = 0; uint8_t* data = NULL; uint8_t* dst = NULL; int num_frames; int num_loop_chunks; WebPMuxError err; if (mux == NULL || assembled_data == NULL) { return WEBP_MUX_INVALID_ARGUMENT; } // Remove LOOP chunk if unnecessary. err = WebPMuxNumChunks(mux, kChunks[IDX_LOOP].id, &num_loop_chunks); if (err != WEBP_MUX_OK) return err; if (num_loop_chunks >= 1) { err = WebPMuxNumChunks(mux, kChunks[IDX_FRAME].id, &num_frames); if (err != WEBP_MUX_OK) return err; if (num_frames == 0) { err = DeleteLoopCount(mux); if (err != WEBP_MUX_OK) return err; } } // Create VP8X chunk. err = CreateVP8XChunk(mux); if (err != WEBP_MUX_OK) return err; // Allocate data. size = ChunksListDiskSize(mux->vp8x_) + ChunksListDiskSize(mux->iccp_) + ChunksListDiskSize(mux->loop_) + MuxImageListDiskSize(mux->images_) + ChunksListDiskSize(mux->meta_) + ChunksListDiskSize(mux->unknown_) + RIFF_HEADER_SIZE; data = (uint8_t*)malloc(size); if (data == NULL) return WEBP_MUX_MEMORY_ERROR; // Emit header & chunks. dst = MuxEmitRiffHeader(data, size); dst = ChunkListEmit(mux->vp8x_, dst); dst = ChunkListEmit(mux->iccp_, dst); dst = ChunkListEmit(mux->loop_, dst); dst = MuxImageListEmit(mux->images_, dst); dst = ChunkListEmit(mux->meta_, dst); dst = ChunkListEmit(mux->unknown_, dst); assert(dst == data + size); // Validate mux. err = MuxValidate(mux); if (err != WEBP_MUX_OK) { free(data); data = NULL; size = 0; } // Finalize. assembled_data->bytes_ = data; assembled_data->size_ = size; return err; }