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/*! @file parameters.c
*
* @brief Implementation of the data structure used to pass parameters
* to the encoder.
*
* The parameters data structure is currently a simple struct, but
* fields may be added, removed, or replaced. A version number is
* included in the parameters data structure to allow decoders to
* adapt to changes.
* It is contemplated that future inplementations may use a dictionary
* of key-value pairs which would allow the decoder to determine whether
* a parameter is present.
*
* (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"
//! Current version number of the parameters data structure
#define PARAMETERS_VERSION 1
/*!
@brief Initialize the parameters data structure
The version number of the parameters data structure must be
incremented whenever a change is made to the definition of
the parameters data structure.
@todo Special initialization required by the metadata?
*/
CODEC_ERROR InitEncoderParameters(ENCODER_PARAMETERS *parameters)
{
memset(parameters, 0, sizeof(ENCODER_PARAMETERS));
parameters->version = PARAMETERS_VERSION;
// Set the default value for the number of bits per lowpass coefficient
parameters->encoded.lowpass_precision = 16;
parameters->input.width = 4000;
parameters->input.height = 3000;
#if VC5_ENABLED_PART(VC5_PART_IMAGE_FORMATS)
// The maximum number of bits per component is the internal precision
//parameters->max_bits_per_component = internal_precision;
#endif
#if VC5_ENABLED_PART(VC5_PART_SECTIONS)
parameters->enabled_sections = VC5_ENABLED_SECTIONS;
#endif
// The elementary bitstream is always enabled
parameters->enabled_parts = VC5_ENABLED_PARTS;
#if VC5_ENABLED_PART(VC5_PART_LAYERS)
parameters->layer_count = 1;
parameters->progressive = 1;
#endif
// Initialize the quantization table using the default values
{
// Initialize to CineForm Filmscan-2
QUANT quant_table[] = {1, 24, 24, 12, 24, 24, 12, 32, 32, 48};
memcpy(parameters->quant_table, quant_table, sizeof(parameters->quant_table));
}
parameters->verbose_flag = false;
gpr_rgb_gain_set_defaults(¶meters->rgb_gain);
parameters->rgb_resolution = VC5_ENCODER_RGB_RESOLUTION_DEFAULT;
return CODEC_ERROR_OKAY;
}
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