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Add some comments and const qualifiers.

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This commit is contained in:
Ari Koivula 2014-05-06 13:03:22 +03:00
parent 3910b7989a
commit eaf8835bda
1 changed files with 21 additions and 15 deletions
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36
src/encoder.c
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@ -2025,7 +2025,7 @@ void encode_coding_tree(encoder_state * const encoder_state,
} }
static void transform_chroma(encoder_state * const encoder_state, cu_info *cur_cu, static void transform_chroma(encoder_state * const encoder_state, cu_info *cur_cu,
int depth, pixel *base_u, pixel *pred_u, int depth, const pixel *base_u, pixel *pred_u,
coefficient *coeff_u, int8_t scan_idx_chroma, coefficient *coeff_u, int8_t scan_idx_chroma,
coefficient *pre_quant_coeff, coefficient *block) coefficient *pre_quant_coeff, coefficient *block)
{ {
@ -2095,6 +2095,11 @@ static void reconstruct_chroma(const encoder_state * const encoder_state, cu_inf
} }
} }
/**
* This function calculates the residual coefficients for a region of the LCU
* (defined by x, y and depth) and updates the reconstruction with the
* kvantized residual.
*/
void encode_transform_tree(encoder_state * const encoder_state, int32_t x, int32_t y, const uint8_t depth, lcu_t* lcu) void encode_transform_tree(encoder_state * const encoder_state, int32_t x, int32_t y, const uint8_t depth, lcu_t* lcu)
{ {
const encoder_control * const encoder = encoder_state->encoder_control; const encoder_control * const encoder = encoder_state->encoder_control;
@ -2149,38 +2154,39 @@ void encode_transform_tree(encoder_state * const encoder_state, int32_t x, int32
} }
{ {
// INTRAPREDICTION VARIABLES // Pointers to current location in arrays with prediction.
// Pointers to reconstruction arrays
pixel *recbase_y = &lcu->rec.y[x_local + y_local * LCU_WIDTH]; pixel *recbase_y = &lcu->rec.y[x_local + y_local * LCU_WIDTH];
pixel *recbase_u = &lcu->rec.u[x_local/2 + (y_local * LCU_WIDTH)/4]; pixel *recbase_u = &lcu->rec.u[x_local/2 + (y_local * LCU_WIDTH)/4];
pixel *recbase_v = &lcu->rec.v[x_local/2 + (y_local * LCU_WIDTH)/4]; pixel *recbase_v = &lcu->rec.v[x_local/2 + (y_local * LCU_WIDTH)/4];
int32_t recbase_stride = LCU_WIDTH; const int32_t recbase_stride = LCU_WIDTH;
// Pointers to current location in arrays with reference.
const pixel *base_y = &lcu->ref.y[x_local + y_local * LCU_WIDTH];
const pixel *base_u = &lcu->ref.u[x_local/2 + (y_local * LCU_WIDTH)/4];
const pixel *base_v = &lcu->ref.v[x_local/2 + (y_local * LCU_WIDTH)/4];
const int32_t base_stride = LCU_WIDTH;
pixel *base_y = &lcu->ref.y[x_local + y_local * LCU_WIDTH]; // Temporary buffers. Not really used for much. Possibly unnecessary.
pixel *base_u = &lcu->ref.u[x_local/2 + (y_local * LCU_WIDTH)/4];
pixel *base_v = &lcu->ref.v[x_local/2 + (y_local * LCU_WIDTH)/4];
int32_t base_stride = LCU_WIDTH;
pixel pred_y[LCU_WIDTH*LCU_WIDTH]; pixel pred_y[LCU_WIDTH*LCU_WIDTH];
pixel pred_u[LCU_WIDTH*LCU_WIDTH>>2]; pixel pred_u[LCU_WIDTH*LCU_WIDTH>>2];
pixel pred_v[LCU_WIDTH*LCU_WIDTH>>2]; pixel pred_v[LCU_WIDTH*LCU_WIDTH>>2];
int32_t pred_stride = LCU_WIDTH; const int32_t pred_stride = LCU_WIDTH;
// Buffers for coefficients.
coefficient coeff_y[LCU_WIDTH*LCU_WIDTH]; coefficient coeff_y[LCU_WIDTH*LCU_WIDTH];
coefficient coeff_u[LCU_WIDTH*LCU_WIDTH>>2]; coefficient coeff_u[LCU_WIDTH*LCU_WIDTH>>2];
coefficient coeff_v[LCU_WIDTH*LCU_WIDTH>>2]; coefficient coeff_v[LCU_WIDTH*LCU_WIDTH>>2];
// Pointers to current location in arrays with kvantized coefficients.
coefficient *orig_coeff_y = &lcu->coeff.y[x_local + y_local * LCU_WIDTH]; coefficient *orig_coeff_y = &lcu->coeff.y[x_local + y_local * LCU_WIDTH];
coefficient *orig_coeff_u = &lcu->coeff.u[x_local/2 + (y_local * LCU_WIDTH)/4]; coefficient *orig_coeff_u = &lcu->coeff.u[x_local/2 + (y_local * LCU_WIDTH)/4];
coefficient *orig_coeff_v = &lcu->coeff.v[x_local/2 + (y_local * LCU_WIDTH)/4]; coefficient *orig_coeff_v = &lcu->coeff.v[x_local/2 + (y_local * LCU_WIDTH)/4];
int32_t coeff_stride = LCU_WIDTH; const int32_t coeff_stride = LCU_WIDTH;
// Quant and transform here... // Temporary buffers for kvantization and transformation.
int16_t block[LCU_WIDTH*LCU_WIDTH>>2]; int16_t block[LCU_WIDTH*LCU_WIDTH>>2];
int16_t pre_quant_coeff[LCU_WIDTH*LCU_WIDTH>>2]; int16_t pre_quant_coeff[LCU_WIDTH*LCU_WIDTH>>2];
// INTRA PREDICTION
uint32_t ac_sum = 0; uint32_t ac_sum = 0;
uint8_t scan_idx_luma = SCAN_DIAG; uint8_t scan_idx_luma = SCAN_DIAG;
uint8_t scan_idx_chroma = SCAN_DIAG; uint8_t scan_idx_chroma = SCAN_DIAG;