1#include "gba-thread.h"
  2#include "gba-config.h"
  3#include "gba.h"
  4#include "renderers/video-software.h"
  5
  6#include "platform/commandline.h"
  7
  8#include <errno.h>
  9#include <fcntl.h>
 10#include <signal.h>
 11#include <inttypes.h>
 12#include <sys/time.h>
 13
 14#define PERF_OPTIONS "F:NPS:"
 15#define PERF_USAGE \
 16	"\nBenchmark options:\n" \
 17	"  -F FRAMES        Run for the specified number of FRAMES before exiting\n" \
 18	"  -N               Disable video rendering entirely\n" \
 19	"  -P               CSV output, useful for parsing\n" \
 20	"  -S SEC           Run for SEC in-game seconds before exiting"
 21
 22struct PerfOpts {
 23	bool noVideo;
 24	bool csv;
 25	unsigned duration;
 26	unsigned frames;
 27};
 28
 29static void _GBAPerfRunloop(struct GBAThread* context, int* frames, bool quiet);
 30static void _GBAPerfShutdown(int signal);
 31static bool _parsePerfOpts(struct SubParser* parser, struct GBAOptions* gbaOpts, int option, const char* arg);
 32
 33static struct GBAThread* _thread;
 34
 35int main(int argc, char** argv) {
 36	signal(SIGINT, _GBAPerfShutdown);
 37
 38	struct GBAVideoSoftwareRenderer renderer;
 39	GBAVideoSoftwareRendererCreate(&renderer);
 40
 41	struct PerfOpts perfOpts = { false, false, 0, 0 };
 42	struct SubParser subparser = {
 43		.usage = PERF_USAGE,
 44		.parse = _parsePerfOpts,
 45		.extraOptions = PERF_OPTIONS,
 46		.opts = &perfOpts
 47	};
 48
 49	struct GBAOptions opts = {};
 50	struct GBAArguments args = {};
 51	if (!parseArguments(&args, &opts, argc, argv, &subparser)) {
 52		usage(argv[0], PERF_USAGE);
 53		return 1;
 54	}
 55
 56	renderer.outputBuffer = malloc(256 * 256 * 4);
 57	renderer.outputBufferStride = 256;
 58
 59	struct GBAThread context = { };
 60	_thread = &context;
 61
 62	if (!perfOpts.noVideo) {
 63		context.renderer = &renderer.d;
 64	}
 65
 66	context.debugger = createDebugger(&args);
 67	char gameCode[5] = { 0 };
 68
 69	GBAMapArgumentsToContext(&args, &context);
 70	GBAMapOptionsToContext(&opts, &context);
 71
 72	context.sync.audioWait = false;
 73	context.sync.videoFrameWait = false;
 74
 75	GBAThreadStart(&context);
 76	GBAGetGameCode(context.gba, gameCode);
 77
 78	int frames = perfOpts.frames;
 79	if (!frames) {
 80		frames = perfOpts.duration * 60;
 81	}
 82	struct timeval tv;
 83	gettimeofday(&tv, 0);
 84	uint64_t start = 1000000LL * tv.tv_sec + tv.tv_usec;
 85	_GBAPerfRunloop(&context, &frames, perfOpts.csv);
 86	gettimeofday(&tv, 0);
 87	uint64_t end = 1000000LL * tv.tv_sec + tv.tv_usec;
 88	uint64_t duration = end - start;
 89
 90	GBAThreadJoin(&context);
 91	GBAConfigFreeOpts(&opts);
 92	freeArguments(&args);
 93	free(context.debugger);
 94
 95	free(renderer.outputBuffer);
 96
 97	float scaledFrames = frames * 1000000.f;
 98	if (perfOpts.csv) {
 99		puts("game_code,frames,duration,renderer");
100		const char* rendererName;
101		if (perfOpts.noVideo) {
102			rendererName = "none";
103		} else {
104			rendererName = "software";
105		}
106		printf("%s,%i,%" PRIu64 ",%s\n", gameCode, frames, duration, rendererName);
107	} else {
108		printf("%u frames in %" PRIu64 " microseconds: %g fps (%gx)\n", frames, duration, scaledFrames / duration, scaledFrames / (duration * 60.f));
109	}
110
111	return 0;
112}
113
114static void _GBAPerfRunloop(struct GBAThread* context, int* frames, bool quiet) {
115	struct timeval lastEcho;
116	gettimeofday(&lastEcho, 0);
117	int duration = *frames;
118	*frames = 0;
119	int lastFrames = 0;
120	while (context->state < THREAD_EXITING) {
121		if (GBASyncWaitFrameStart(&context->sync, 0)) {
122			++*frames;
123			++lastFrames;
124			if (!quiet) {
125				struct timeval currentTime;
126				long timeDiff;
127				gettimeofday(&currentTime, 0);
128				timeDiff = currentTime.tv_sec - lastEcho.tv_sec;
129				timeDiff *= 1000;
130				timeDiff += (currentTime.tv_usec - lastEcho.tv_usec) / 1000;
131				if (timeDiff >= 1000) {
132					printf("\033[2K\rCurrent FPS: %g (%gx)", lastFrames / (timeDiff / 1000.0f), lastFrames / (float) (60 * (timeDiff / 1000.0f)));
133					fflush(stdout);
134					lastEcho = currentTime;
135					lastFrames = 0;
136				}
137			}
138		}
139		GBASyncWaitFrameEnd(&context->sync);
140		if (*frames == duration) {
141			_GBAPerfShutdown(0);
142		}
143	}
144	if (!quiet) {
145		printf("\033[2K\r");
146	}
147}
148
149static void _GBAPerfShutdown(int signal) {
150	UNUSED(signal);
151	pthread_mutex_lock(&_thread->stateMutex);
152	_thread->state = THREAD_EXITING;
153	pthread_mutex_unlock(&_thread->stateMutex);
154}
155
156static bool _parsePerfOpts(struct SubParser* parser, struct GBAOptions* gbaOpts, int option, const char* arg) {
157	UNUSED(gbaOpts);
158	struct PerfOpts* opts = parser->opts;
159	errno = 0;
160	switch (option) {
161	case 'F':
162		opts->frames = strtoul(arg, 0, 10);
163		return !errno;
164	case 'N':
165		opts->noVideo = true;
166		return true;
167	case 'P':
168		opts->csv = true;
169		return true;
170	case 'S':
171		opts->duration = strtoul(arg, 0, 10);
172		return !errno;
173	default:
174		return false;
175	}
176}