1/* Copyright (c) 2013-2014 Jeffrey Pfau
  2 *
  3 * This Source Code Form is subject to the terms of the Mozilla Public
  4 * License, v. 2.0. If a copy of the MPL was not distributed with this
  5 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
  6#include "gba-thread.h"
  7#include "gba-config.h"
  8#include "gba.h"
  9#include "renderers/video-software.h"
 10
 11#include "platform/commandline.h"
 12
 13#include <errno.h>
 14#include <fcntl.h>
 15#include <signal.h>
 16#include <inttypes.h>
 17#include <sys/time.h>
 18
 19#define PERF_OPTIONS "F:NPS:"
 20#define PERF_USAGE \
 21	"\nBenchmark options:\n" \
 22	"  -F FRAMES        Run for the specified number of FRAMES before exiting\n" \
 23	"  -N               Disable video rendering entirely\n" \
 24	"  -P               CSV output, useful for parsing\n" \
 25	"  -S SEC           Run for SEC in-game seconds before exiting"
 26
 27struct PerfOpts {
 28	bool noVideo;
 29	bool csv;
 30	unsigned duration;
 31	unsigned frames;
 32};
 33
 34static void _GBAPerfRunloop(struct GBAThread* context, int* frames, bool quiet);
 35static void _GBAPerfShutdown(int signal);
 36static bool _parsePerfOpts(struct SubParser* parser, struct GBAConfig* config, int option, const char* arg);
 37
 38static struct GBAThread* _thread;
 39static bool _dispatchExiting = false;
 40
 41int main(int argc, char** argv) {
 42	signal(SIGINT, _GBAPerfShutdown);
 43
 44	struct GBAVideoSoftwareRenderer renderer;
 45	GBAVideoSoftwareRendererCreate(&renderer);
 46
 47	struct PerfOpts perfOpts = { false, false, 0, 0 };
 48	struct SubParser subparser = {
 49		.usage = PERF_USAGE,
 50		.parse = _parsePerfOpts,
 51		.extraOptions = PERF_OPTIONS,
 52		.opts = &perfOpts
 53	};
 54
 55	struct GBAConfig config;
 56	GBAConfigInit(&config, "perf");
 57	GBAConfigLoad(&config);
 58
 59	struct GBAOptions opts = {};
 60	struct GBAArguments args = {};
 61	if (!parseArguments(&args, &config, argc, argv, &subparser)) {
 62		usage(argv[0], PERF_USAGE);
 63		freeArguments(&args);
 64		GBAConfigFreeOpts(&opts);
 65		GBAConfigDeinit(&config);
 66		return 1;
 67	}
 68
 69	renderer.outputBuffer = malloc(256 * 256 * 4);
 70	renderer.outputBufferStride = 256;
 71
 72	struct GBAThread context = { };
 73	_thread = &context;
 74
 75	if (!perfOpts.noVideo) {
 76		context.renderer = &renderer.d;
 77	}
 78
 79	context.debugger = createDebugger(&args, &context);
 80	context.overrides = &config.configTable;
 81	char gameCode[5] = { 0 };
 82
 83	GBAConfigMap(&config, &opts);
 84	opts.audioSync = false;
 85	opts.videoSync = false;
 86	GBAMapArgumentsToContext(&args, &context);
 87	GBAMapOptionsToContext(&opts, &context);
 88
 89	GBAThreadStart(&context);
 90	GBAGetGameCode(context.gba, gameCode);
 91
 92	int frames = perfOpts.frames;
 93	if (!frames) {
 94		frames = perfOpts.duration * 60;
 95	}
 96	struct timeval tv;
 97	gettimeofday(&tv, 0);
 98	uint64_t start = 1000000LL * tv.tv_sec + tv.tv_usec;
 99	_GBAPerfRunloop(&context, &frames, perfOpts.csv);
100	gettimeofday(&tv, 0);
101	uint64_t end = 1000000LL * tv.tv_sec + tv.tv_usec;
102	uint64_t duration = end - start;
103
104	GBAThreadJoin(&context);
105	GBAConfigFreeOpts(&opts);
106	freeArguments(&args);
107	GBAConfigDeinit(&config);
108	free(context.debugger);
109
110	free(renderer.outputBuffer);
111
112	float scaledFrames = frames * 1000000.f;
113	if (perfOpts.csv) {
114		puts("game_code,frames,duration,renderer");
115		const char* rendererName;
116		if (perfOpts.noVideo) {
117			rendererName = "none";
118		} else {
119			rendererName = "software";
120		}
121		printf("%s,%i,%" PRIu64 ",%s\n", gameCode, frames, duration, rendererName);
122	} else {
123		printf("%u frames in %" PRIu64 " microseconds: %g fps (%gx)\n", frames, duration, scaledFrames / duration, scaledFrames / (duration * 60.f));
124	}
125
126	return GBAThreadHasCrashed(&context);
127}
128
129static void _GBAPerfRunloop(struct GBAThread* context, int* frames, bool quiet) {
130	struct timeval lastEcho;
131	gettimeofday(&lastEcho, 0);
132	int duration = *frames;
133	*frames = 0;
134	int lastFrames = 0;
135	while (context->state < THREAD_EXITING) {
136		if (GBASyncWaitFrameStart(&context->sync, 0)) {
137			++*frames;
138			++lastFrames;
139			if (!quiet) {
140				struct timeval currentTime;
141				long timeDiff;
142				gettimeofday(&currentTime, 0);
143				timeDiff = currentTime.tv_sec - lastEcho.tv_sec;
144				timeDiff *= 1000;
145				timeDiff += (currentTime.tv_usec - lastEcho.tv_usec) / 1000;
146				if (timeDiff >= 1000) {
147					printf("\033[2K\rCurrent FPS: %g (%gx)", lastFrames / (timeDiff / 1000.0f), lastFrames / (float) (60 * (timeDiff / 1000.0f)));
148					fflush(stdout);
149					lastEcho = currentTime;
150					lastFrames = 0;
151				}
152			}
153		}
154		GBASyncWaitFrameEnd(&context->sync);
155		if (*frames == duration) {
156			_GBAPerfShutdown(0);
157		}
158		if (_dispatchExiting) {
159			GBAThreadEnd(context);
160		}
161	}
162	if (!quiet) {
163		printf("\033[2K\r");
164	}
165}
166
167static void _GBAPerfShutdown(int signal) {
168	UNUSED(signal);
169	// This will come in ON the GBA thread, so we have to handle it carefully
170	_dispatchExiting = true;
171	ConditionWake(&_thread->sync.videoFrameAvailableCond);
172}
173
174static bool _parsePerfOpts(struct SubParser* parser, struct GBAConfig* config, int option, const char* arg) {
175	UNUSED(config);
176	struct PerfOpts* opts = parser->opts;
177	errno = 0;
178	switch (option) {
179	case 'F':
180		opts->frames = strtoul(arg, 0, 10);
181		return !errno;
182	case 'N':
183		opts->noVideo = true;
184		return true;
185	case 'P':
186		opts->csv = true;
187		return true;
188	case 'S':
189		opts->duration = strtoul(arg, 0, 10);
190		return !errno;
191	default:
192		return false;
193	}
194}