1 files changed, 132 insertions, 0 deletions
diff --git a/gpr/source/lib/vc5_decoder/vc5_decoder.c b/gpr/source/lib/vc5_decoder/vc5_decoder.c
new file mode 100755
index 0000000..f36ad4c
--- /dev/null
+++ b/gpr/source/lib/vc5_decoder/vc5_decoder.c
@@ -0,0 +1,132 @@
+/*! @file vc5_decoder.c
+ *
+ *  @brief Implementation of the top level vc5 decoder API.
+ *
+ *  (C) Copyright 2018 GoPro Inc (http://gopro.com/).
+ *
+ *  Licensed under either:
+ *  - Apache License, Version 2.0, http://www.apache.org/licenses/LICENSE-2.0
+ *  - MIT license, http://opensource.org/licenses/MIT
+ *  at your option.
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+#include "headers.h"
+
+void vc5_decoder_parameters_set_default(vc5_decoder_parameters* decoding_parameters)
+{
+    decoding_parameters->enabled_parts = VC5_ENABLED_PARTS;
+    
+    decoding_parameters->pixel_format = VC5_DECODER_PIXEL_FORMAT_DEFAULT;
+    
+    decoding_parameters->rgb_resolution = VC5_DECODER_RGB_RESOLUTION_DEFAULT;
+    decoding_parameters->rgb_bits = 8;
+    
+    gpr_rgb_gain_set_defaults(&decoding_parameters->rgb_gain);
+}
+
+CODEC_ERROR vc5_decoder_process(const vc5_decoder_parameters*   decoding_parameters,    /* vc5 decoding parameters */
+                                const gpr_buffer*               vc5_buffer,             /* vc5 input buffer. */
+                                      gpr_buffer*               raw_buffer,             /* raw output buffer. */
+                                      gpr_rgb_buffer*           rgb_buffer)             /* rgb output buffer */
+{
+    CODEC_ERROR error = CODEC_ERROR_OKAY;
+
+    IMAGE output_image;
+    // Clear the members of the image data structure
+    InitImage(&output_image);
+    
+    STREAM input;
+    DECODER_PARAMETERS parameters;
+    
+    // Initialize the parameters passed to the decoder
+    InitDecoderParameters(&parameters);
+    
+    parameters.enabled_parts   = decoding_parameters->enabled_parts;    
+    
+    parameters.rgb_resolution  = decoding_parameters->rgb_resolution;
+    parameters.rgb_bits        = decoding_parameters->rgb_bits;
+    parameters.rgb_gain        = decoding_parameters->rgb_gain;
+    
+    if( rgb_buffer == NULL )
+    {
+        parameters.rgb_resolution = GPR_RGB_RESOLUTION_NONE;
+    }
+        
+    parameters.allocator.Alloc = decoding_parameters->mem_alloc;
+    parameters.allocator.Free  = decoding_parameters->mem_free;
+    
+    switch( decoding_parameters->pixel_format )
+    {
+        case VC5_DECODER_PIXEL_FORMAT_RGGB_12:
+            parameters.output.format = PIXEL_FORMAT_RAW_RGGB_12;
+            break;
+
+        case VC5_DECODER_PIXEL_FORMAT_RGGB_14:
+            parameters.output.format = PIXEL_FORMAT_RAW_RGGB_14;
+            break;
+            
+        case VC5_DECODER_PIXEL_FORMAT_GBRG_12:
+            parameters.output.format = PIXEL_FORMAT_RAW_GBRG_12;
+            break;
+
+        case VC5_DECODER_PIXEL_FORMAT_GBRG_14:
+            parameters.output.format = PIXEL_FORMAT_RAW_GBRG_14;
+            break;
+            
+        default:
+            assert(0);
+    }
+    
+    // Check that the enabled parts are correct
+    error =  CheckEnabledParts(&parameters.enabled_parts);
+    if (error != CODEC_ERROR_OKAY) {
+        return CODEC_ERROR_ENABLED_PARTS;
+    }
+
+    error = OpenStreamBuffer(&input, vc5_buffer->buffer, vc5_buffer->size );
+    if (error != CODEC_ERROR_OKAY) {
+        fprintf(stderr, "Could not open input vc5 stream\n" );
+        return error;
+    }
+
+    RGB_IMAGE rgb_image;
+    InitRGBImage(&rgb_image);
+    
+    error = DecodeImage(&input, &output_image, &rgb_image, &parameters);
+    if (error != CODEC_ERROR_OKAY) {
+        fprintf(stderr, "Could not decode input vc5 bitstream. Error number %d\n", error );
+        return error;
+    }
+    
+    if( parameters.rgb_resolution != GPR_RGB_RESOLUTION_NONE )
+    {
+        assert( rgb_buffer);
+        
+        rgb_buffer->buffer  = rgb_image.buffer;
+        rgb_buffer->size    = rgb_image.size;
+        rgb_buffer->width   = rgb_image.width;
+        rgb_buffer->height  = rgb_image.height;
+    }
+    
+    if( raw_buffer )
+    {
+        assert( output_image.buffer );
+        assert( output_image.size == output_image.width * output_image.height * sizeof(unsigned short) );
+
+        raw_buffer->buffer  = output_image.buffer;
+        raw_buffer->size    = output_image.size;
+    }
+    else
+    {
+        // Nothing should be returned in output_image since we do not want output raw image
+        assert( output_image.buffer == NULL );
+    }
+    
+    return error;
+}