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@ -29,7 +29,7 @@ |
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#define DEFAULT_SAMPLE_RATE 2048000 |
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#define DEFAULT_SAMPLE_RATE 2048000 |
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#define DEFAULT_ASYNC_BUF_NUMBER 32 |
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#define DEFAULT_ASYNC_BUF_NUMBER 32 |
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#define DEFAULT_BUF_LENGTH (16 * 16384) |
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#define DEFAULT_BUF_LENGTH (16 * 16384) |
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#define MINIMAL_BUF_LENGTH 32 |
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#define MINIMAL_BUF_LENGTH 512 |
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#define MAXIMAL_BUF_LENGTH (256 * 16384) |
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#define MAXIMAL_BUF_LENGTH (256 * 16384) |
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static int do_exit = 0; |
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static int do_exit = 0; |
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@ -45,7 +45,7 @@ void usage(void) |
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"\t[-g tuner_gain (default: 0 dB)]\n" |
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"\t[-g tuner_gain (default: 0 dB)]\n" |
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"\t[-b output_block_size (default: 16 * 16384)]\n" |
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"\t[-b output_block_size (default: 16 * 16384)]\n" |
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"\t[-S force sync output (default: async)]\n" |
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"\t[-S force sync output (default: async)]\n" |
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"\toutput filename\n"); |
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"\toutput_filename (a '-' dumps samples to stdout)\n\n"); |
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exit(1); |
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exit(1); |
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} |
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} |
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@ -168,21 +168,23 @@ int main(int argc, char **argv) |
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else |
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else |
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fprintf(stderr, "Tuner gain set to %i dB.\n", gain); |
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fprintf(stderr, "Tuner gain set to %i dB.\n", gain); |
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if(strcmp(filename, "-") != 0) { |
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file = fopen(filename, "wb"); |
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file = fopen(filename, "wb"); |
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if (!file) { |
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if (!file) { |
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fprintf(stderr, "Failed to open %s\n", filename); |
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fprintf(stderr, "Failed to open %s\n", filename); |
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goto out; |
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goto out; |
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} |
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} |
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} else { |
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file = stdout; |
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} |
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/* Reset endpoint before we start reading from it (mandatory) */ |
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/* Reset endpoint before we start reading from it (mandatory) */ |
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r = rtlsdr_reset_buffer(dev); |
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r = rtlsdr_reset_buffer(dev); |
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if (r < 0) |
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if (r < 0) |
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fprintf(stderr, "WARNING: Failed to reset buffers.\n"); |
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fprintf(stderr, "WARNING: Failed to reset buffers.\n"); |
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fprintf(stderr, "Reading samples...\n"); |
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if (sync_mode) { |
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if (sync_mode) { |
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fprintf(stderr, "Reading samples in sync mode...\n"); |
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while (!do_exit) { |
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while (!do_exit) { |
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r = rtlsdr_read_sync(dev, buffer, out_block_size, &n_read); |
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r = rtlsdr_read_sync(dev, buffer, out_block_size, &n_read); |
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if (r < 0) |
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if (r < 0) |
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@ -196,6 +198,7 @@ int main(int argc, char **argv) |
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} |
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} |
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} |
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} |
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} else { |
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} else { |
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fprintf(stderr, "Reading samples...\n"); |
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rtlsdr_read_async(dev, rtlsdr_callback, (void *)file, |
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rtlsdr_read_async(dev, rtlsdr_callback, (void *)file, |
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DEFAULT_ASYNC_BUF_NUMBER, out_block_size); |
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DEFAULT_ASYNC_BUF_NUMBER, out_block_size); |
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} |
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} |
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@ -205,7 +208,9 @@ int main(int argc, char **argv) |
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else |
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else |
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fprintf(stderr, "\nSystem cancel, exiting...\n"); |
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fprintf(stderr, "\nSystem cancel, exiting...\n"); |
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if (file != stdout) |
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fclose(file); |
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fclose(file); |
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rtlsdr_close(dev); |
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rtlsdr_close(dev); |
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free (buffer); |
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free (buffer); |
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out: |
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out: |
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