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#include "evx1.h"
#include "analysis.h"
#include "config.h"
#include "convert.h"
#include "evx1dec.h"
#include "motion.h"
#include "quantize.h"
namespace evx {
evx_status unserialize_slice(bit_stream *input, evx_context *context);
evx_status deblock_image_filter(evx_block_desc *block_table, image_set *target_image);
evx_status decode_block(const evx_frame &frame, const evx_block_desc &block_desc, const macroblock &source_block,
evx_cache_bank *cache_bank, int32 i, int32 j, macroblock *dest_block)
{
switch (block_desc.block_type)
{
case EVX_BLOCK_INTRA_DEFAULT:
{
inverse_quantize_macroblock(block_desc.q_index, block_desc.block_type, source_block, &cache_bank->transform_block);
inverse_transform_macroblock(cache_bank->transform_block, dest_block);
} break;
case EVX_BLOCK_INTRA_MOTION_COPY:
{
macroblock beta_block;
uint32 intra_pred_index = query_prediction_index_by_offset(frame, 0);
create_macroblock(cache_bank->prediction_cache[intra_pred_index], i + block_desc.motion_x, j + block_desc.motion_y, &beta_block);
if (block_desc.sp_pred)
{
int16 sp_i, sp_j;
compute_motion_direction_from_frac_index(block_desc.sp_index, &sp_i, &sp_j);
create_subpixel_macroblock(&cache_bank->prediction_cache[intra_pred_index], block_desc.sp_amount, beta_block,
i + block_desc.motion_x + sp_i, j + block_desc.motion_y + sp_j, &cache_bank->motion_block);
copy_macroblock(cache_bank->motion_block, dest_block);
}
else
{
// no sub-pixel motion estimation
copy_macroblock(beta_block, dest_block);
}
} break;
case EVX_BLOCK_INTRA_MOTION_DELTA:
{
macroblock beta_block;
uint32 intra_pred_index = query_prediction_index_by_offset(frame, 0);
create_macroblock(cache_bank->prediction_cache[intra_pred_index], i + block_desc.motion_x, j + block_desc.motion_y, &beta_block);
inverse_quantize_macroblock(block_desc.q_index, block_desc.block_type, source_block, &cache_bank->transform_block);
if (block_desc.sp_pred)
{
int16 sp_i, sp_j;
compute_motion_direction_from_frac_index(block_desc.sp_index, &sp_i, &sp_j);
create_subpixel_macroblock(&cache_bank->prediction_cache[intra_pred_index], block_desc.sp_amount, beta_block,
i + block_desc.motion_x + sp_i, j + block_desc.motion_y + sp_j, &cache_bank->motion_block);
inverse_transform_add_macroblock(cache_bank->transform_block, cache_bank->motion_block, dest_block);
}
else
{
// no sub-pixel motion estimation
inverse_transform_add_macroblock(cache_bank->transform_block, beta_block, dest_block);
}
} break;
case EVX_BLOCK_INTER_MOTION_COPY:
{
macroblock beta_block;
uint32 inter_pred_index = query_prediction_index_by_offset(frame, block_desc.prediction_target);
create_macroblock(cache_bank->prediction_cache[inter_pred_index], i + block_desc.motion_x, j + block_desc.motion_y, &beta_block);
if (block_desc.sp_pred)
{
int16 sp_i, sp_j;
compute_motion_direction_from_frac_index(block_desc.sp_index, &sp_i, &sp_j);
create_subpixel_macroblock(&cache_bank->prediction_cache[inter_pred_index], block_desc.sp_amount, beta_block,
i + block_desc.motion_x + sp_i, j + block_desc.motion_y + sp_j, &cache_bank->motion_block);
copy_macroblock(cache_bank->motion_block, dest_block);
}
else
{
// no sub-pixel motion estimation
copy_macroblock(beta_block, dest_block);
}
} break;
case EVX_BLOCK_INTER_COPY:
{
macroblock beta_block;
uint32 inter_pred_index = query_prediction_index_by_offset(frame, block_desc.prediction_target);
create_macroblock(cache_bank->prediction_cache[inter_pred_index], i, j, &beta_block);
copy_macroblock(beta_block, dest_block);
} break;
case EVX_BLOCK_INTER_MOTION_DELTA:
{
macroblock beta_block;
uint32 inter_pred_index = query_prediction_index_by_offset(frame, block_desc.prediction_target);
create_macroblock(cache_bank->prediction_cache[inter_pred_index], i + block_desc.motion_x, j + block_desc.motion_y, &beta_block);
inverse_quantize_macroblock(block_desc.q_index, block_desc.block_type, source_block, &cache_bank->transform_block);
if (block_desc.sp_pred)
{
int16 sp_i, sp_j;
compute_motion_direction_from_frac_index(block_desc.sp_index, &sp_i, &sp_j);
create_subpixel_macroblock(&cache_bank->prediction_cache[inter_pred_index], block_desc.sp_amount, beta_block,
i + block_desc.motion_x + sp_i, j + block_desc.motion_y + sp_j, &cache_bank->motion_block);
inverse_transform_add_macroblock(cache_bank->transform_block, cache_bank->motion_block, dest_block);
}
else
{
// no sub-pixel motion estimation
inverse_transform_add_macroblock(cache_bank->transform_block, beta_block, dest_block);
}
} break;
case EVX_BLOCK_INTER_DELTA:
{
macroblock beta_block;
uint32 inter_pred_index = query_prediction_index_by_offset(frame, block_desc.prediction_target);
create_macroblock(cache_bank->prediction_cache[inter_pred_index], i, j, &beta_block);
inverse_quantize_macroblock(block_desc.q_index, block_desc.block_type, source_block, &cache_bank->transform_block);
inverse_transform_add_macroblock(cache_bank->transform_block, beta_block, dest_block);
} break;
default: return evx_post_error(EVX_ERROR_INVALID_RESOURCE);;
};
return EVX_SUCCESS;
}
evx_status decode_slice(const evx_frame &frame, evx_context *context)
{
uint32 block_index = 0;
uint32 width = query_context_width(*context);
uint32 height = query_context_height(*context);
uint32 dest_index = query_prediction_index_by_offset(frame, 0);
macroblock source_block, dest_block;
for (int32 j = 0; j < height; j += EVX_MACROBLOCK_SIZE)
for (int32 i = 0; i < width; i += EVX_MACROBLOCK_SIZE)
{
evx_block_desc *block_desc = &context->block_table[block_index++];
create_macroblock(context->cache_bank.input_cache, i, j, &source_block);
create_macroblock(context->cache_bank.prediction_cache[dest_index], i, j, &dest_block);
if (evx_failed(decode_block(frame, *block_desc, source_block, &context->cache_bank, i, j, &dest_block)))
{
return evx_post_error(EVX_ERROR_EXECUTION_FAILURE);
}
}
return EVX_SUCCESS;
}
evx_status engine_decode_frame(bit_stream *input, const evx_frame &frame, evx_context *context, image *output)
{
uint32 dest_index = query_prediction_index_by_offset(frame, 0);
if (evx_failed(unserialize_slice(input, context)))
{
return evx_post_error(EVX_ERROR_EXECUTION_FAILURE);
}
if (evx_failed(decode_slice(frame, context)))
{
return evx_post_error(EVX_ERROR_EXECUTION_FAILURE);
}
// Run our in-loop deblocking filter on the final post prediction image.
if (evx_failed(deblock_image_filter(context->block_table, &context->cache_bank.prediction_cache[dest_index])))
{
return evx_post_error(EVX_ERROR_EXECUTION_FAILURE);
}
if (evx_failed(convert_image(context->cache_bank.prediction_cache[dest_index], output)))
{
return evx_post_error(EVX_ERROR_EXECUTION_FAILURE);
}
return EVX_SUCCESS;
}
} // namespace evx