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Diffstat (limited to 'gpr/source/lib/vc5_encoder/parameters.c')
-rwxr-xr-x | gpr/source/lib/vc5_encoder/parameters.c | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/gpr/source/lib/vc5_encoder/parameters.c b/gpr/source/lib/vc5_encoder/parameters.c new file mode 100755 index 0000000..2158a71 --- /dev/null +++ b/gpr/source/lib/vc5_encoder/parameters.c @@ -0,0 +1,86 @@ +/*! @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; +} + |