/** Documented at declaration */
int
gpujpeg_encoder_encode(struct gpujpeg_encoder* encoder, struct gpujpeg_encoder_input* input, uint8_t** image_compressed, int* image_compressed_size)
{
// Get coder
struct gpujpeg_coder* coder = &encoder->coder;
// Reset durations
coder->duration_memory_to = 0.0;
coder->duration_memory_from = 0.0;
coder->duration_memory_map = 0.0;
coder->duration_memory_unmap = 0.0;
coder->duration_preprocessor = 0.0;
coder->duration_dct_quantization = 0.0;
coder->duration_huffman_coder = 0.0;
coder->duration_stream = 0.0;
coder->duration_in_gpu = 0.0;
// Load input image
if ( input->type == GPUJPEG_ENCODER_INPUT_IMAGE ) {
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Copy image to device memory
if ( cudaSuccess != cudaMemcpy(coder->d_data_raw, input->image, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyHostToDevice) )
return -1;
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
} else if ( input->type == GPUJPEG_ENCODER_INPUT_OPENGL_TEXTURE ) {
assert(input->texture != NULL);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Map texture to CUDA
int data_size = 0;
uint8_t* d_data = gpujpeg_opengl_texture_map(input->texture, &data_size);
assert(data_size == (coder->data_raw_size));
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_map = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Copy image data from texture pixel buffer object to device data
cudaMemcpy(coder->d_data_raw, d_data, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToDevice);
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Unmap texture from CUDA
gpujpeg_opengl_texture_unmap(input->texture);
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_unmap = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
} else if(input->type == GPUJPEG_ENCODER_INPUT_IMAGE_ON_GPU) {
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
coder->d_data_raw = input->image;
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
} else {
// Unknown output type
assert(0);
}
//gpujpeg_table_print(encoder->table[JPEG_COMPONENT_LUMINANCE]);
//gpujpeg_table_print(encoder->table[JPEG_COMPONENT_CHROMINANCE]);
GPUJPEG_CUSTOM_TIMER_START(encoder->in_gpu);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Preprocessing
if ( gpujpeg_preprocessor_encode(&encoder->coder) != 0 )
return -1;
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_preprocessor = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Perform DCT and quantization
if ( gpujpeg_dct_gpu(encoder) != 0 )
return -1;
// If restart interval is 0 then the GPU processing is in the end (even huffman coder will be performed on CPU)
if ( coder->param.restart_interval == 0 ) {
GPUJPEG_CUSTOM_TIMER_STOP(encoder->in_gpu);
coder->duration_in_gpu = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->in_gpu);
}
// Initialize writer output buffer current position
encoder->writer->buffer_current = encoder->writer->buffer;
// Write header
gpujpeg_writer_write_header(encoder);
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_dct_quantization = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Perform huffman coding on CPU (when restart interval is not set)
if ( coder->param.restart_interval == 0 ) {
// Copy quantized data from device memory to cpu memory
cudaMemcpy(coder->data_quantized, coder->d_data_quantized, coder->data_size * sizeof(int16_t), cudaMemcpyDeviceToHost);
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Perform huffman coding
if ( gpujpeg_huffman_cpu_encoder_encode(encoder) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Huffman encoder on CPU failed!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_huffman_coder = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
}
// Perform huffman coding on GPU (when restart interval is set)
else {
// Perform huffman coding
unsigned int output_size;
if ( gpujpeg_huffman_gpu_encoder_encode(encoder, &output_size) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Huffman encoder on GPU failed!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(encoder->in_gpu);
coder->duration_in_gpu = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->in_gpu);
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_huffman_coder = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
// Copy compressed data from device memory to cpu memory
if ( cudaSuccess != cudaMemcpy(coder->data_compressed, coder->d_data_compressed, output_size, cudaMemcpyDeviceToHost) != 0 )
return -1;
// Copy segments from device memory
if ( cudaSuccess != cudaMemcpy(coder->segment, coder->d_segment, coder->segment_count * sizeof(struct gpujpeg_segment), cudaMemcpyDeviceToHost) )
return -1;
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
GPUJPEG_CUSTOM_TIMER_START(encoder->def);
if ( coder->param.interleaved == 1 ) {
// Write scan header (only one scan is written, that contains all color components data)
gpujpeg_writer_write_scan_header(encoder, 0);
// Write scan data
for ( int segment_index = 0; segment_index < coder->segment_count; segment_index++ ) {
struct gpujpeg_segment* segment = &coder->segment[segment_index];
gpujpeg_writer_write_segment_info(encoder);
// Copy compressed data to writer
memcpy(
encoder->writer->buffer_current,
&coder->data_compressed[segment->data_compressed_index],
segment->data_compressed_size
);
encoder->writer->buffer_current += segment->data_compressed_size;
//printf("Compressed data %d bytes\n", segment->data_compressed_size);
}
// Remove last restart marker in scan (is not needed)
encoder->writer->buffer_current -= 2;
gpujpeg_writer_write_segment_info(encoder);
} else {
// Write huffman coder results as one scan for each color component
int segment_index = 0;
for ( int comp = 0; comp < coder->param_image.comp_count; comp++ ) {
// Write scan header
gpujpeg_writer_write_scan_header(encoder, comp);
// Write scan data
for ( int index = 0; index < coder->component[comp].segment_count; index++ ) {
struct gpujpeg_segment* segment = &coder->segment[segment_index];
gpujpeg_writer_write_segment_info(encoder);
// Copy compressed data to writer
memcpy(
encoder->writer->buffer_current,
&coder->data_compressed[segment->data_compressed_index],
segment->data_compressed_size
);
encoder->writer->buffer_current += segment->data_compressed_size;
//printf("Compressed data %d bytes\n", segment->data_compressed_size);
segment_index++;
}
// Remove last restart marker in scan (is not needed)
encoder->writer->buffer_current -= 2;
gpujpeg_writer_write_segment_info(encoder);
}
}
GPUJPEG_CUSTOM_TIMER_STOP(encoder->def);
coder->duration_stream = GPUJPEG_CUSTOM_TIMER_DURATION(encoder->def);
}
gpujpeg_writer_emit_marker(encoder->writer, GPUJPEG_MARKER_EOI);
// Set compressed image
*image_compressed = encoder->writer->buffer;
*image_compressed_size = encoder->writer->buffer_current - encoder->writer->buffer;
return 0;
}
/** Documented at declaration */
int
gpujpeg_decoder_decode(struct gpujpeg_decoder* decoder, uint8_t* image, int image_size, struct gpujpeg_decoder_output* output)
{
// Get coder
struct gpujpeg_coder* coder = &decoder->coder;
// Reset durations
coder->duration_memory_to = 0.0;
coder->duration_memory_from = 0.0;
coder->duration_memory_map = 0.0;
coder->duration_memory_unmap = 0.0;
coder->duration_preprocessor = 0.0;
coder->duration_dct_quantization = 0.0;
coder->duration_huffman_coder = 0.0;
coder->duration_stream = 0.0;
coder->duration_in_gpu = 0.0;
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Read JPEG image data
if ( gpujpeg_reader_read_image(decoder, image, image_size) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Decoder failed when decoding image data!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_stream = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Perform huffman decoding on CPU (when restart interval is not set)
if ( coder->param.restart_interval == 0 ) {
if ( gpujpeg_huffman_cpu_decoder_decode(decoder) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Huffman decoder failed!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_huffman_coder = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Copy quantized data to device memory from cpu memory
cudaMemcpy(coder->d_data_quantized, coder->data_quantized, coder->data_size * sizeof(int16_t), cudaMemcpyHostToDevice);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->in_gpu);
}
// Perform huffman decoding on GPU (when restart interval is set)
else {
// Reset huffman output
cudaMemset(coder->d_data_quantized, 0, coder->data_size * sizeof(int16_t));
// Copy scan data to device memory
cudaMemcpy(coder->d_data_compressed, coder->data_compressed, decoder->data_compressed_size * sizeof(uint8_t), cudaMemcpyHostToDevice);
gpujpeg_cuda_check_error("Decoder copy compressed data");
// Copy segments to device memory
cudaMemcpy(coder->d_segment, coder->segment, decoder->segment_count * sizeof(struct gpujpeg_segment), cudaMemcpyHostToDevice);
gpujpeg_cuda_check_error("Decoder copy compressed data");
// Zero output memory
cudaMemset(coder->d_data_quantized, 0, coder->data_size * sizeof(int16_t));
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->in_gpu);
// Perform huffman decoding
if ( gpujpeg_huffman_gpu_decoder_decode(decoder) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Huffman decoder on GPU failed!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_huffman_coder = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
}
// Perform IDCT and dequantization (own CUDA implementation)
gpujpeg_idct_gpu(decoder);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_dct_quantization = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Preprocessing
if ( gpujpeg_preprocessor_decode(&decoder->coder) != 0 )
return -1;
GPUJPEG_CUSTOM_TIMER_STOP(decoder->in_gpu);
coder->duration_in_gpu = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->in_gpu);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_preprocessor = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
// Set decompressed image size
output->data_size = coder->data_raw_size * sizeof(uint8_t);
// Set decompressed image
if ( output->type == GPUJPEG_DECODER_OUTPUT_INTERNAL_BUFFER ) {
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Copy decompressed image to host memory
cudaMemcpy(coder->data_raw, coder->d_data_raw, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToHost);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
// Set output to internal buffer
output->data = coder->data_raw;
} else if ( output->type == GPUJPEG_DECODER_OUTPUT_CUSTOM_BUFFER ) {
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
assert(output->data != NULL);
// Copy decompressed image to host memory
cudaMemcpy(output->data, coder->d_data_raw, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToHost);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
} else if ( output->type == GPUJPEG_DECODER_OUTPUT_OPENGL_TEXTURE ) {
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Map OpenGL texture
int data_size = 0;
uint8_t* d_data = gpujpeg_opengl_texture_map(output->texture, &data_size);
assert(data_size == coder->data_raw_size);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_map = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Copy decompressed image to texture pixel buffer object device data
cudaMemcpy(d_data, coder->d_data_raw, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToDevice);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Unmap OpenGL texture
gpujpeg_opengl_texture_unmap(output->texture);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_unmap = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
} else {
// Unknown output type
assert(0);
}
return 0;
}
/** Documented at declaration */
int
gpujpeg_decoder_decode(struct gpujpeg_decoder* decoder, uint8_t* image, int image_size, struct gpujpeg_decoder_output* output)
{
// Get coder
struct gpujpeg_coder* coder = &decoder->coder;
// Reset durations
coder->duration_memory_to = 0.0;
coder->duration_memory_from = 0.0;
coder->duration_memory_map = 0.0;
coder->duration_memory_unmap = 0.0;
coder->duration_preprocessor = 0.0;
coder->duration_dct_quantization = 0.0;
coder->duration_huffman_coder = 0.0;
coder->duration_stream = 0.0;
coder->duration_in_gpu = 0.0;
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Read JPEG image data
if ( gpujpeg_reader_read_image(decoder, image, image_size) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Decoder failed when decoding image data!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_stream = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Perform huffman decoding on CPU (when restart interval is not set)
if ( coder->param.restart_interval == 0 ) {
if ( gpujpeg_huffman_cpu_decoder_decode(decoder) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Huffman decoder failed!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_huffman_coder = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Copy quantized data to device memory from cpu memory
cudaMemcpy(coder->d_data_quantized, coder->data_quantized, coder->data_size * sizeof(int16_t), cudaMemcpyHostToDevice);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->in_gpu);
}
// Perform huffman decoding on GPU (when restart interval is set)
else {
#ifdef GPUJPEG_HUFFMAN_CODER_TABLES_IN_CONSTANT
// Copy huffman tables to constant memory
for ( int comp_type = 0; comp_type < GPUJPEG_COMPONENT_TYPE_COUNT; comp_type++ ) {
for ( int huff_type = 0; huff_type < GPUJPEG_HUFFMAN_TYPE_COUNT; huff_type++ ) {
int index = (comp_type * GPUJPEG_HUFFMAN_TYPE_COUNT + huff_type);
cudaMemcpyToSymbol(
(char*)gpujpeg_decoder_table_huffman,
&decoder->table_huffman[comp_type][huff_type],
sizeof(struct gpujpeg_table_huffman_decoder),
index * sizeof(struct gpujpeg_table_huffman_decoder),
cudaMemcpyHostToDevice
);
}
}
gpujpeg_cuda_check_error("Decoder copy huffman tables to constant memory");
#endif
// Reset huffman output
cudaMemset(coder->d_data_quantized, 0, coder->data_size * sizeof(int16_t));
// Copy scan data to device memory
cudaMemcpy(coder->d_data_compressed, coder->data_compressed, decoder->data_compressed_size * sizeof(uint8_t), cudaMemcpyHostToDevice);
gpujpeg_cuda_check_error("Decoder copy compressed data");
// Copy segments to device memory
cudaMemcpy(coder->d_segment, coder->segment, decoder->segment_count * sizeof(struct gpujpeg_segment), cudaMemcpyHostToDevice);
gpujpeg_cuda_check_error("Decoder copy compressed data");
// Zero output memory
cudaMemset(coder->d_data_quantized, 0, coder->data_size * sizeof(int16_t));
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_to = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->in_gpu);
// Perform huffman decoding
if ( gpujpeg_huffman_gpu_decoder_decode(decoder) != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Huffman decoder on GPU failed!\n");
return -1;
}
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_huffman_coder = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
}
#ifdef GPUJPEG_DCT_FROM_NPP
// Perform IDCT and dequantization (implementation from NPP)
for ( int comp = 0; comp < coder->param_image.comp_count; comp++ ) {
// Get component
struct gpujpeg_component* component = &coder->component[comp];
// Determine table type
enum gpujpeg_component_type type = (comp == 0) ? GPUJPEG_COMPONENT_LUMINANCE : GPUJPEG_COMPONENT_CHROMINANCE;
//gpujpeg_component_print16(component, component->d_data_quantized);
cudaMemset(component->d_data, 0, component->data_size * sizeof(uint8_t));
//Perform inverse DCT
NppiSize inv_roi;
inv_roi.width = component->data_width * GPUJPEG_BLOCK_SIZE;
inv_roi.height = component->data_height / GPUJPEG_BLOCK_SIZE;
assert(GPUJPEG_BLOCK_SIZE == 8);
NppStatus status = nppiDCTQuantInv8x8LS_JPEG_16s8u_C1R(
component->d_data_quantized,
component->data_width * GPUJPEG_BLOCK_SIZE * sizeof(int16_t),
component->d_data,
component->data_width * sizeof(uint8_t),
decoder->table_quantization[type].d_table,
inv_roi
);
if ( status != 0 ) {
fprintf(stderr, "[GPUJPEG] [Error] Inverse DCT failed (error %d)!\n", status);
}
//gpujpeg_component_print8(component, component->d_data);
}
#else
// Perform IDCT and dequantization (own CUDA implementation)
gpujpeg_idct_gpu(decoder);
// Perform IDCT and dequantization (own CPU implementation)
// gpujpeg_idct_cpu(decoder);
#endif
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_dct_quantization = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Preprocessing
if ( gpujpeg_preprocessor_decode(&decoder->coder) != 0 )
return -1;
GPUJPEG_CUSTOM_TIMER_STOP(decoder->in_gpu);
coder->duration_in_gpu = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->in_gpu);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_preprocessor = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
// Set decompressed image size
output->data_size = coder->data_raw_size * sizeof(uint8_t);
// Set decompressed image
if ( output->type == GPUJPEG_DECODER_OUTPUT_INTERNAL_BUFFER ) {
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Copy decompressed image to host memory
cudaMemcpy(coder->data_raw, coder->d_data_raw, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToHost);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
// Set output to internal buffer
output->data = coder->data_raw;
} else if ( output->type == GPUJPEG_DECODER_OUTPUT_CUSTOM_BUFFER ) {
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
assert(output->data != NULL);
// Copy decompressed image to host memory
cudaMemcpy(output->data, coder->d_data_raw, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToHost);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
} else if ( output->type == GPUJPEG_DECODER_OUTPUT_OPENGL_TEXTURE ) {
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Map OpenGL texture
int data_size = 0;
uint8_t* d_data = gpujpeg_opengl_texture_map(output->texture, &data_size);
assert(data_size == coder->data_raw_size);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_map = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Copy decompressed image to texture pixel buffer object device data
cudaMemcpy(d_data, coder->d_data_raw, coder->data_raw_size * sizeof(uint8_t), cudaMemcpyDeviceToDevice);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_from = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
GPUJPEG_CUSTOM_TIMER_START(decoder->def);
// Unmap OpenGL texture
gpujpeg_opengl_texture_unmap(output->texture);
GPUJPEG_CUSTOM_TIMER_STOP(decoder->def);
coder->duration_memory_unmap = GPUJPEG_CUSTOM_TIMER_DURATION(decoder->def);
} else {
// Unknown output type
assert(0);
}
return 0;
}