libwebp-0.6.0-rc1

third_party/libwebp/dec/webpi_dec.h

 // Copyright 2011 Google Inc. All Rights Reserved.
 //
 // Use of this source code is governed by a BSD-style license
 // that can be found in the COPYING file in the root of the source
 // tree. An additional intellectual property rights grant can be found
 // in the file PATENTS. All contributing project authors may
 // be found in the AUTHORS file in the root of the source tree.
 // -----------------------------------------------------------------------------
 //
 // Internal header: WebP decoding parameters and custom IO on buffer
 //
 // Author: somnath@google.com (Somnath Banerjee)
 
 #ifndef WEBP_DEC_WEBPI_H_
 #define WEBP_DEC_WEBPI_H_
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#include "../utils/rescaler.h"
-#include "./decode_vp8.h"
+#include "../utils/rescaler_utils.h"
+#include "./vp8_dec.h"
 
 //------------------------------------------------------------------------------
 // WebPDecParams: Decoding output parameters. Transient internal object.
 
 typedef struct WebPDecParams WebPDecParams;
 typedef int (*OutputFunc)(const VP8Io* const io, WebPDecParams* const p);
 typedef int (*OutputAlphaFunc)(const VP8Io* const io, WebPDecParams* const p,
                                int expected_num_out_lines);
 typedef int (*OutputRowFunc)(WebPDecParams* const p, int y_pos,
                              int max_out_lines);
 
 struct WebPDecParams {
   WebPDecBuffer* output;             // output buffer.
   uint8_t* tmp_y, *tmp_u, *tmp_v;    // cache for the fancy upsampler
                                      // or used for tmp rescaling
 
   int last_y;                 // coordinate of the line that was last output
   const WebPDecoderOptions* options;  // if not NULL, use alt decoding features
-  // rescalers
-  WebPRescaler scaler_y, scaler_u, scaler_v, scaler_a;
+
+  WebPRescaler* scaler_y, *scaler_u, *scaler_v, *scaler_a;  // rescalers
   void* memory;                  // overall scratch memory for the output work.
 
   OutputFunc emit;               // output RGB or YUV samples
   OutputAlphaFunc emit_alpha;    // output alpha channel
   OutputRowFunc emit_alpha_row;  // output one line of rescaled alpha values
-
-  WebPDecBuffer* final_output;   // In case the user supplied a slow-memory
-                                 // output, we decode image in temporary buffer
-                                 // (this::output) and copy it here.
-  WebPDecBuffer tmp_buffer;      // this::output will point to this one in case
-                                 // of slow memory.
 };
 
 // Should be called first, before any use of the WebPDecParams object.
 void WebPResetDecParams(WebPDecParams* const params);
 
-// Delete all memory (after an error occurred, for instance)
-void WebPFreeDecParams(WebPDecParams* const params);
-
 //------------------------------------------------------------------------------
 // Header parsing helpers
 
 // Structure storing a description of the RIFF headers.
 typedef struct {
   const uint8_t* data;         // input buffer
   size_t data_size;            // input buffer size
   int have_all_data;           // true if all data is known to be available
   size_t offset;               // offset to main data chunk (VP8 or VP8L)
   const uint8_t* alpha_data;   // points to alpha chunk (if present)
@@ skipping 61 matching lines @@
 int WebPAvoidSlowMemory(const WebPDecBuffer* const output,
                         const WebPBitstreamFeatures* const features);
 
 //------------------------------------------------------------------------------
 
 #ifdef __cplusplus
 }    // extern "C"
 #endif
 
 #endif  /* WEBP_DEC_WEBPI_H_ */