ogl_beamforming

throughput.c (11771B)

---

 /* See LICENSE for license details. */
 /* TODO(rnp):
  * [ ]: for finer grained evaluation of throughput latency just queue a data upload
  *      without replacing the data.
  * [ ]: bug: we aren't inserting rf data between each frame
  */
 
 #define LIB_FN function
 #include "ogl_beamformer_lib.c"
 
 #include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <zstd.h>
 
 global i32 g_output_points[4] = {512, 1, 1024, 1};
 global v2  g_axial_extent     = {{ 10e-3f, 165e-3f}};
 global v2  g_lateral_extent   = {{-60e-3f,  60e-3f}};
 global f32 g_f_number         = 0.5f;
 
 typedef struct {
 	b32 loop;
 	b32 cuda;
 	u32 frame_number;
 
 	char **remaining;
 	i32    remaining_count;
 } Options;
 
 #define ZEMP_BP_MAGIC (uint64_t)0x5042504D455AFECAull
 typedef struct {
 	u64 magic;
 	u32 version;
 	u16 decode_mode;
 	u16 beamform_mode;
 	u32 raw_data_dim[4];
 	u32 decoded_data_dim[4];
 	f32 xdc_element_pitch[2];
 	f32 xdc_transform[16]; /* NOTE: column major order */
 	i16 channel_mapping[256];
 	f32 transmit_angles[256];
 	f32 focal_depths[256];
 	i16 sparse_elements[256];
 	i16 hadamard_rows[256];
 	f32 speed_of_sound;
 	f32 center_frequency;
 	f32 sampling_frequency;
 	f32 time_offset;
 	i32 transmit_mode;
 } zemp_bp_v1;
 
 global b32 g_should_exit;
 
 #define die(...) die_((char *)__func__, __VA_ARGS__)
 function no_return void
 die_(char *function_name, char *format, ...)
 {
 	if (function_name)
 		fprintf(stderr, "%s: ", function_name);
 
 	va_list ap;
 
 	va_start(ap, format);
 	vfprintf(stderr, format, ap);
 	va_end(ap);
 
 	os_exit(1);
 }
 
 #if OS_LINUX
 
 #include <fcntl.h>
 #include <sys/stat.h>
 #include <unistd.h>
 
 function void os_init_timer(void) { }
 
 function f64
 os_get_time(void)
 {
 	f64 result = (f64)os_get_timer_counter() / (f64)os_get_timer_frequency();
 	return result;
 }
 
 function s8
 os_read_file_simp(char *fname)
 {
 	s8 result;
 	i32 fd = open(fname, O_RDONLY);
 	if (fd < 0)
 		die("couldn't open file: %s\n", fname);
 
 	struct stat st;
 	if (stat(fname, &st) < 0)
 		die("couldn't stat file\n");
 
 	result.len  = st.st_size;
 	result.data = malloc((uz)st.st_size);
 	if (!result.data)
 		die("couldn't alloc space for reading\n");
 
 	iz rlen = read(fd, result.data, (u32)st.st_size);
 	close(fd);
 
 	if (rlen != st.st_size)
 		die("couldn't read file: %s\n", fname);
 
 	return result;
 }
 
 #elif OS_WINDOWS
 
 global w32_context os_context;
 
 function void
 os_init_timer(void)
 {
 	os_context.timer_frequency = os_get_timer_frequency();
 }
 
 function f64
 os_get_time(void)
 {
 	f64 result = (f64)os_get_timer_counter() / (f64)os_context.timer_frequency;
 	return result;
 }
 
 function s8
 os_read_file_simp(char *fname)
 {
 	s8 result;
 	iptr h = CreateFileA(fname, GENERIC_READ, 0, 0, OPEN_EXISTING, 0, 0);
 	if (h == INVALID_FILE)
 		die("couldn't open file: %s\n", fname);
 
 	w32_file_info fileinfo;
 	if (!GetFileInformationByHandle(h, &fileinfo))
 		die("couldn't get file info\n", stderr);
 
 	result.len  = fileinfo.nFileSizeLow;
 	result.data = malloc(fileinfo.nFileSizeLow);
 	if (!result.data)
 		die("couldn't alloc space for reading\n");
 
 	i32 rlen = 0;
 	if (!ReadFile(h, result.data, (i32)fileinfo.nFileSizeLow, &rlen, 0) && rlen != (i32)fileinfo.nFileSizeLow)
 		die("couldn't read file: %s\n", fname);
 	CloseHandle(h);
 
 	return result;
 }
 
 #else
 #error Unsupported Platform
 #endif
 
 function void
 stream_ensure_termination(Stream *s, u8 byte)
 {
 	b32 found = 0;
 	if (!s->errors && s->widx > 0)
 		found = s->data[s->widx - 1] == byte;
 	if (!found) {
 		s->errors |= s->cap - 1 < s->widx;
 		if (!s->errors)
 			s->data[s->widx++] = byte;
 	}
 }
 
 function void *
 decompress_zstd_data(s8 raw)
 {
 	uz requested_size = ZSTD_getFrameContentSize(raw.data, (uz)raw.len);
 	void *out         = malloc(requested_size);
 	if (out) {
 		uz decompressed = ZSTD_decompress(out, requested_size, raw.data, (uz)raw.len);
 		if (decompressed != requested_size) {
 			free(out);
 			out = 0;
 		}
 	}
 	return out;
 }
 
 function zemp_bp_v1 *
 read_zemp_bp_v1(u8 *path)
 {
 	s8 raw = os_read_file_simp((char *)path);
 	zemp_bp_v1 *result = 0;
 	if (raw.len == sizeof(zemp_bp_v1) && *(u64 *)raw.data == ZEMP_BP_MAGIC) {
 		if (((zemp_bp_v1 *)raw.data)->version == 1)
 			result = (zemp_bp_v1 *)raw.data;
 	}
 	return result;
 }
 
 function void
 beamformer_parameters_from_zemp_bp_v1(zemp_bp_v1 *zbp, BeamformerParameters *out)
 {
 	mem_copy(out->xdc_transform,       zbp->xdc_transform,     sizeof(out->xdc_transform));
 	mem_copy(out->xdc_element_pitch,   zbp->xdc_element_pitch, sizeof(out->xdc_element_pitch));
 	mem_copy(out->raw_data_dimensions, zbp->raw_data_dim,      sizeof(out->raw_data_dimensions));
 
 	out->sample_count           = zbp->decoded_data_dim[0];
 	out->channel_count          = zbp->decoded_data_dim[1];
 	out->acquisition_count      = zbp->decoded_data_dim[2];
 	out->transmit_mode          = (u8)((zbp->transmit_mode & 2) >> 1);
 	out->receive_mode           = (u8)((zbp->transmit_mode & 1) >> 0);
 	out->decode                 = (u8)zbp->decode_mode;
 	out->das_shader_id          = zbp->beamform_mode;
 	out->time_offset            = zbp->time_offset;
 	out->sampling_frequency     = zbp->sampling_frequency;
 	out->demodulation_frequency = zbp->center_frequency;
 	out->speed_of_sound         = zbp->speed_of_sound;
 }
 
 #define shift_n(v, c, n) v += n, c -= n
 #define shift(v, c) shift_n(v, c, 1)
 
 function void
 usage(char *argv0)
 {
 	die("%s [--loop] [--cuda] [--frame n] base_path study\n"
 	    "    --loop:    reupload data forever\n"
 	    "    --cuda:    use cuda for decoding\n"
 	    "    --frame n: use frame n of the data for display\n",
 	    argv0);
 }
 
 function b32
 s8_equal(s8 a, s8 b)
 {
 	b32 result = a.len == b.len;
 	for (iz i = 0; result && i < a.len; i++)
 		result &= a.data[i] == b.data[i];
 	return result;
 }
 
 function Options
 parse_argv(i32 argc, char *argv[])
 {
 	Options result = {0};
 
 	char *argv0 = argv[0];
 	shift(argv, argc);
 
 	while (argc > 0) {
 		s8 arg = c_str_to_s8(*argv);
 
 		if (s8_equal(arg, s8("--loop"))) {
 			shift(argv, argc);
 			result.loop = 1;
 		} else if (s8_equal(arg, s8("--cuda"))) {
 			shift(argv, argc);
 			result.cuda = 1;
 		} else if (s8_equal(arg, s8("--frame"))) {
 			shift(argv, argc);
 			if (argc) {
 				result.frame_number = (u32)atoi(*argv);
 				shift(argv, argc);
 			}
 		} else if (arg.len > 0 && arg.data[0] == '-') {
 			usage(argv0);
 		} else {
 			break;
 		}
 	}
 
 	result.remaining       = argv;
 	result.remaining_count = argc;
 
 	return result;
 }
 
 function i16 *
 decompress_data_at_work_index(Stream *path_base, u32 index)
 {
 	stream_append_byte(path_base, '_');
 	stream_append_u64_width(path_base, index, 2);
 	stream_append_s8(path_base, s8(".zst"));
 	stream_ensure_termination(path_base, 0);
 
 	s8 compressed_data = os_read_file_simp((char *)path_base->data);
 	i16 *result = decompress_zstd_data(compressed_data);
 	if (!result)
 		die("failed to decompress data: %s\n", path_base->data);
 	free(compressed_data.data);
 
 	return result;
 }
 
 function b32
 send_frame(i16 *restrict i16_data, BeamformerParameters *restrict bp)
 {
 	u32 data_size = bp->raw_data_dimensions[0] * bp->raw_data_dimensions[1] * sizeof(i16);
 	b32 result    = beamformer_push_data_with_compute(i16_data, data_size, BeamformerViewPlaneTag_XZ, 0);
 	if (!result && !g_should_exit) printf("lib error: %s\n", beamformer_get_last_error_string());
 
 	return result;
 }
 
 function void
 execute_study(s8 study, Arena arena, Stream path, Options *options)
 {
 	fprintf(stderr, "showing: %.*s\n", (i32)study.len, study.data);
 
 	stream_append_s8(&path, study);
 	stream_ensure_termination(&path, OS_PATH_SEPARATOR_CHAR);
 	stream_append_s8(&path, study);
 	i32 path_work_index = path.widx;
 
 	stream_append_s8(&path, s8(".bp"));
 	stream_ensure_termination(&path, 0);
 
 	zemp_bp_v1 *zbp = read_zemp_bp_v1(path.data);
 	if (!zbp) die("failed to unpack parameters file\n");
 
 	BeamformerParameters bp = {0};
 	beamformer_parameters_from_zemp_bp_v1(zbp, &bp);
 
 	mem_copy(bp.output_points, g_output_points, sizeof(bp.output_points));
 	bp.output_points[3] = 1;
 
 	bp.output_min_coordinate[0] = g_lateral_extent.x;
 	bp.output_min_coordinate[1] = 0;
 	bp.output_min_coordinate[2] = g_axial_extent.x;
 
 	bp.output_max_coordinate[0] = g_lateral_extent.y;
 	bp.output_max_coordinate[1] = 0;
 	bp.output_max_coordinate[2] = g_axial_extent.y;
 
 	bp.f_number       = g_f_number;
 	bp.beamform_plane = 0;
 	bp.interpolate    = 1;
 
 	bp.decimation_rate = 1;
 	bp.demodulation_frequency = bp.sampling_frequency / 4;
 
 	BeamformerFilterParameters kaiser = {0};
 	kaiser.Kaiser.beta             = 5.65f;
 	kaiser.Kaiser.cutoff_frequency = 2.0e6f;
 	kaiser.Kaiser.length           = 36;
 
 	f32 kaiser_parameters[sizeof(kaiser.Kaiser) / sizeof(f32)];
 	mem_copy(kaiser_parameters, &kaiser.Kaiser, sizeof(kaiser.Kaiser));
 	beamformer_create_filter(BeamformerFilterKind_Kaiser, kaiser_parameters,
 	                         countof(kaiser_parameters), bp.sampling_frequency / 2, 0, 0, 0);
 	beamformer_set_pipeline_stage_parameters(0, 0);
 
 	if (zbp->sparse_elements[0] == -1) {
 		for (i16 i = 0; i < countof(zbp->sparse_elements); i++)
 			zbp->sparse_elements[i] = i;
 	}
 
 	{
 		alignas(64) v2 focal_vectors[countof(zbp->focal_depths)];
 		for (u32 i = 0; i < countof(zbp->focal_depths); i++)
 			focal_vectors[i] = (v2){{zbp->transmit_angles[i], zbp->focal_depths[i]}};
 		beamformer_push_focal_vectors((f32 *)focal_vectors, countof(focal_vectors));
 	}
 
 	beamformer_push_channel_mapping(zbp->channel_mapping, countof(zbp->channel_mapping));
 	beamformer_push_sparse_elements(zbp->sparse_elements, countof(zbp->sparse_elements));
 	beamformer_push_parameters(&bp);
 
 	i32 shader_stages[16];
 	u32 shader_stage_count = 0;
 	shader_stages[shader_stage_count++] = BeamformerShaderKind_Demodulate;
 	if (options->cuda) shader_stages[shader_stage_count++] = BeamformerShaderKind_CudaDecode;
 	else               shader_stages[shader_stage_count++] = BeamformerShaderKind_Decode;
 	shader_stages[shader_stage_count++] = BeamformerShaderKind_DAS;
 
 	beamformer_push_pipeline(shader_stages, shader_stage_count, BeamformerDataKind_Int16);
 
 	beamformer_set_global_timeout(1000);
 
 	stream_reset(&path, path_work_index);
 	i16 *data = decompress_data_at_work_index(&path, options->frame_number);
 
 	if (options->loop) {
 		BeamformerLiveImagingParameters lip = {.active = 1};
 		beamformer_set_live_parameters(&lip);
 
 		u32 frame = 0;
 		f32 times[32] = {0};
 		f32 data_size = (f32)(bp.raw_data_dimensions[0] * bp.raw_data_dimensions[1] * sizeof(*data));
 		f64 start = os_get_time();
 		for (;!g_should_exit;) {
 			if (send_frame(data, &bp)) {
 				f64 now   = os_get_time();
 				f32 delta = (f32)(now - start);
 				start = now;
 
 				if ((frame % 16) == 0) {
 					f32 sum = 0;
 					for (u32 i = 0; i < countof(times); i++)
 						sum += times[i] / countof(times);
 					printf("Frame Time: %8.3f [ms] | 32-Frame Average: %8.3f [ms] | %8.3f GB/s\n",
 					       delta * 1e3, sum * 1e3, data_size / (sum * (GB(1))));
 				}
 
 				times[frame % countof(times)] = delta;
 				frame++;
 			}
 			i32 flag = beamformer_live_parameters_get_dirty_flag();
 			if (flag != -1 && (1 << flag) == BeamformerLiveImagingDirtyFlags_StopImaging)
 				break;
 		}
 
 		lip.active = 0;
 		beamformer_set_live_parameters(&lip);
 	} else {
 		for (u32 i = 0; i < zbp->raw_data_dim[2]; i++)
 			send_frame(data + i * bp.raw_data_dimensions[0] * bp.raw_data_dimensions[1], &bp);
 	}
 
 	free(zbp);
 	free(data);
 }
 
 function void
 sigint(i32 _signo)
 {
 	g_should_exit = 1;
 }
 
 extern i32
 main(i32 argc, char *argv[])
 {
 	Options options = parse_argv(argc, argv);
 
 	if (!BETWEEN(options.remaining_count, 1, 2))
 		usage(argv[0]);
 
 	os_init_timer();
 
 	signal(SIGINT, sigint);
 
 	Arena arena = os_alloc_arena(KB(8));
 	Stream path = stream_alloc(&arena, KB(4));
 	stream_append_s8(&path, c_str_to_s8(options.remaining[0]));
 	stream_ensure_termination(&path, OS_PATH_SEPARATOR_CHAR);
 
 	execute_study(c_str_to_s8(options.remaining[1]), arena, path, &options);
 
 	return 0;
 }