initial import

src/test_unit/file_utils.c

@@ -0,0 +1,159 @@
+/* test_unit - Simple FLAC unit tester
+ * Copyright (C) 2002  Josh Coalson
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ */
+
+#include "file_utils.h"
+#include "FLAC/assert.h"
+#include "FLAC/stream_encoder.h"
+#include <stdio.h>
+#include <stdlib.h>
+#if defined _MSC_VER || defined __MINGW32__
+#include <io.h> /* for chmod(), unlink */
+#endif
+#include <sys/stat.h> /* for stat(), chmod() */
+#if defined _WIN32 && !defined __CYGWIN__
+#else
+#include <unistd.h> /* for unlink() */
+#endif
+
+#ifdef min
+#undef min
+#endif
+#define min(a,b) ((a)<(b)?(a):(b))
+
+typedef struct {
+	FILE *file;
+} encoder_client_struct;
+
+static FLAC__StreamEncoderWriteStatus encoder_write_callback_(const FLAC__StreamEncoder *encoder, const FLAC__byte buffer[], unsigned bytes, unsigned samples, unsigned current_frame, void *client_data)
+{
+	encoder_client_struct *ecd = (encoder_client_struct*)client_data;
+
+	(void)encoder, (void)samples, (void)current_frame;
+
+	if(fwrite(buffer, 1, bytes, ecd->file) != bytes)
+		return FLAC__STREAM_ENCODER_WRITE_FATAL_ERROR;
+	else
+		return FLAC__STREAM_ENCODER_WRITE_OK;
+}
+
+static void encoder_metadata_callback_(const FLAC__StreamEncoder *encoder, const FLAC__StreamMetaData *metadata, void *client_data)
+{
+	(void)encoder, (void)metadata, (void)client_data;
+}
+
+FLAC__bool file_utils__change_stats(const char *filename, FLAC__bool read_only)
+{
+	struct stat stats;
+
+	if(0 == stat(filename, &stats)) {
+		if(read_only) {
+			stats.st_mode &= ~S_IWUSR;
+			stats.st_mode &= ~S_IWGRP;
+			stats.st_mode &= ~S_IWOTH;
+		}
+		else {
+			stats.st_mode |= S_IWUSR;
+			stats.st_mode |= S_IWGRP;
+			stats.st_mode |= S_IWOTH;
+		}
+		if(0 != chmod(filename, stats.st_mode))
+			return false;
+	}
+	else
+		return false;
+
+	return true;
+}
+
+FLAC__bool file_utils__remove_file(const char *filename)
+{
+	return file_utils__change_stats(filename, /*read_only=*/false) && 0 == unlink(filename);
+}
+
+FLAC__bool file_utils__generate_file(const char *filename, unsigned length, const FLAC__StreamMetaData *streaminfo, int padding_length)
+{
+	FLAC__int32 samples[1024];
+	FLAC__StreamEncoder *encoder;
+	encoder_client_struct encoder_client_data;
+	unsigned i, n;
+
+	FLAC__ASSERT(0 != filename);
+	FLAC__ASSERT(0 != streaminfo);
+	FLAC__ASSERT(streaminfo->type == FLAC__METADATA_TYPE_STREAMINFO);
+	FLAC__ASSERT((streaminfo->is_last && padding_length < 0) || (!streaminfo->is_last && padding_length >= 0));
+
+	if(0 == (encoder_client_data.file = fopen(filename, "wb")))
+		return false;
+
+	encoder = FLAC__stream_encoder_new();
+	if(0 == encoder) {
+		fclose(encoder_client_data.file);
+		return false;
+	}
+
+	FLAC__stream_encoder_set_streamable_subset(encoder, true);
+	FLAC__stream_encoder_set_do_mid_side_stereo(encoder, false);
+	FLAC__stream_encoder_set_loose_mid_side_stereo(encoder, false);
+	FLAC__stream_encoder_set_channels(encoder, streaminfo->data.stream_info.channels);
+	FLAC__stream_encoder_set_bits_per_sample(encoder, streaminfo->data.stream_info.bits_per_sample);
+	FLAC__stream_encoder_set_sample_rate(encoder, streaminfo->data.stream_info.sample_rate);
+	FLAC__stream_encoder_set_blocksize(encoder, streaminfo->data.stream_info.min_blocksize);
+	FLAC__stream_encoder_set_max_lpc_order(encoder, 0);
+	FLAC__stream_encoder_set_qlp_coeff_precision(encoder, 0);
+	FLAC__stream_encoder_set_do_qlp_coeff_prec_search(encoder, false);
+	FLAC__stream_encoder_set_do_escape_coding(encoder, false);
+	FLAC__stream_encoder_set_do_exhaustive_model_search(encoder, false);
+	FLAC__stream_encoder_set_min_residual_partition_order(encoder, 0);
+	FLAC__stream_encoder_set_max_residual_partition_order(encoder, 0);
+	FLAC__stream_encoder_set_rice_parameter_search_dist(encoder, 0);
+	FLAC__stream_encoder_set_total_samples_estimate(encoder, streaminfo->data.stream_info.total_samples);
+	FLAC__stream_encoder_set_seek_table(encoder, 0);
+	FLAC__stream_encoder_set_padding(encoder, padding_length);
+	FLAC__stream_encoder_set_last_metadata_is_last(encoder, true);
+	FLAC__stream_encoder_set_write_callback(encoder, encoder_write_callback_);
+	FLAC__stream_encoder_set_metadata_callback(encoder, encoder_metadata_callback_);
+	FLAC__stream_encoder_set_client_data(encoder, &encoder_client_data);
+
+	if(FLAC__stream_encoder_init(encoder) != FLAC__STREAM_ENCODER_OK) {
+		fclose(encoder_client_data.file);
+		return false;
+	}
+
+	/* init the dummy sample buffer */
+	for(i = 0; i < sizeof(samples) / sizeof(FLAC__int32); i++)
+		samples[i] = i & 7;
+
+	while(length > 0) {
+		n = min(length, sizeof(samples) / sizeof(FLAC__int32));
+
+		if(!FLAC__stream_encoder_process_interleaved(encoder, samples, n)) {
+			fclose(encoder_client_data.file);
+			return false;
+		}
+
+		length -= n;
+	}
+
+	fclose(encoder_client_data.file);
+
+	if(FLAC__stream_encoder_get_state(encoder) == FLAC__STREAM_ENCODER_OK)
+		FLAC__stream_encoder_finish(encoder);
+	FLAC__stream_encoder_delete(encoder);
+
+	return true;
+}