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1 // Copyright 2011 Google Inc.
2 //
3 // This code is licensed under the same terms as WebM:
4 //  Software License Agreement:  http://www.webmproject.org/license/software/
5 //  Additional IP Rights Grant:  http://www.webmproject.org/license/additional/
6 // -----------------------------------------------------------------------------
7 //
8 // Enhancement layer (for YUV444/422)
9 //
10 // Author: Skal (pascal.massimino@gmail.com)
11 
12 #include <assert.h>
13 #include <stdlib.h>
14 #include "vp8enci.h"
15 
16 #if defined(__cplusplus) || defined(c_plusplus)
17 extern "C" {
18 #endif
19 
20 #ifdef WEBP_EXPERIMENTAL_FEATURES
21 
22 #endif    /* WEBP_EXPERIMENTAL_FEATURES */
23 
24 //-----------------------------------------------------------------------------
25 
VP8EncInitLayer(VP8Encoder * const enc)26 void VP8EncInitLayer(VP8Encoder* const enc) {
27   enc->use_layer_ = (enc->pic_->u0 != NULL);
28   enc->layer_data_size_ = 0;
29   enc->layer_data_ = NULL;
30   if (enc->use_layer_) {
31     VP8BitWriterInit(&enc->layer_bw_, enc->mb_w_ * enc->mb_h_ * 3);
32   }
33 }
34 
VP8EncCodeLayerBlock(VP8EncIterator * it)35 void VP8EncCodeLayerBlock(VP8EncIterator* it) {
36   (void)it;   // remove a warning
37 #ifdef WEBP_EXPERIMENTAL_FEATURES
38 #endif    /* WEBP_EXPERIMENTAL_FEATURES */
39 }
40 
VP8EncFinishLayer(VP8Encoder * const enc)41 int VP8EncFinishLayer(VP8Encoder* const enc) {
42   if (enc->use_layer_) {
43     enc->layer_data_ = VP8BitWriterFinish(&enc->layer_bw_);
44     enc->layer_data_size_ = VP8BitWriterSize(&enc->layer_bw_);
45   }
46   return 1;
47 }
48 
VP8EncDeleteLayer(VP8Encoder * enc)49 void VP8EncDeleteLayer(VP8Encoder* enc) {
50   free(enc->layer_data_);
51 }
52 
53 #if defined(__cplusplus) || defined(c_plusplus)
54 }    // extern "C"
55 #endif
56