Merge "Add -D option to generate extra declarations" (adc2f3a0) · Commits · e / os / android_frameworks_av

tools/resampler_tools/fir.cpp

+29 −23

Original line number	Diff line number	Diff line
		@@ -66,12 +66,13 @@ static double kaiser(int k, int N, double beta) {

		static void usage(char* name) {
		fprintf(stderr,
		"usage: %s [-h] [-d] [-s sample_rate] [-c cut-off_frequency] [-n half_zero_crossings]"
		"usage: %s [-h] [-d] [-D] [-s sample_rate] [-c cut-off_frequency] [-n half_zero_crossings]"
		" [-f {float\|fixed\|fixed16}] [-b beta] [-v dBFS] [-l lerp]\n"
		" %s [-h] [-d] [-s sample_rate] [-c cut-off_frequency] [-n half_zero_crossings]"
		" %s [-h] [-d] [-D] [-s sample_rate] [-c cut-off_frequency] [-n half_zero_crossings]"
		" [-f {float\|fixed\|fixed16}] [-b beta] [-v dBFS] -p M/N\n"
		" -h this help message\n"
		" -d debug, print comma-separated coefficient table\n"
		" -D generate extra declarations\n"
		" -p generate poly-phase filter coefficients, with sample increment M/N\n"
		" -s sample rate (48000)\n"
		" -c cut-off frequency (20478)\n"
		@@ -97,7 +98,8 @@ int main(int argc, char** argv)
		double Fs = 48000;
		double Fc = 20478;
		double atten = 1;
		int format = 0;
		int format = 0; // 0=fixed, 1=float
		bool declarations = 0;

		// in order to keep the errors associated with the linear
		// interpolation of the coefficients below the quantization error
		@@ -158,11 +160,14 @@ int main(int argc, char** argv)

		int M = 1 << 4; // number of phases for interpolation
		int ch;
		while ((ch = getopt(argc, argv, ":hds:c:n:f:l:m:b:p:v:z:")) != -1) {
		while ((ch = getopt(argc, argv, ":hds:c:n:f:l:m:b:p:v:z:D")) != -1) {
		switch (ch) {
		case 'd':
		debug = true;
		break;
		case 'D':
		declarations = true;
		break;
		case 'p':
		if (sscanf(optarg, "%u/%u", &polyM, &polyN) != 2) {
		usage(argv[0]);
		@@ -230,6 +235,7 @@ int main(int argc, char** argv)
		printf("%s ", argv[i]);
		}
		printf("\n");
		if (declarations) {
		if (!polyphase) {
		printf("const int32_t RESAMPLE_FIR_SIZE = %d;\n", N);
		printf("const int32_t RESAMPLE_FIR_INT_PHASES = %d;\n", M);
		@@ -244,6 +250,7 @@ int main(int argc, char** argv)
		printf("\n");
		printf("static %s resampleFIR[] = {", !format ? "int32_t" : "float");
		}
		}

		if (!polyphase) {
		for (int i=0 ; i<=M ; i++) { // an extra set of coefs for interpolation
		@@ -288,18 +295,17 @@ int main(int argc, char** argv)
		printf("0x%04x,", int32_t(yi)&0xffff);
		}
		} else {
		printf("%.9g%s", y, debug ? "" : "f");
		printf("%.9g%s", y, debug ? "," : "f,");
		}

		if (debug && (i==nzc-1)) {
		} else {
		printf(", ");
		if (i != nzc-1) {
		printf(" ");
		}
		}
		}
		}

		if (!debug) {
		if (!debug && declarations) {
		printf("\n};");
		}
		printf("\n");