Merge branch 'v0.16.x'

Conflicts:
	Makefile.am
	NEWS
	configure.ac
	src/encoder/flac_encoder.c
	src/log.c
	src/pcm_buffer.c

17 files changed, 410 insertions, 78 deletions

diff --git a/src/decoder/ffmpeg_decoder_plugin.c b/src/decoder/ffmpeg_decoder_plugin.c
index 2923c1400..14727715b 100644
--- a/src/decoder/ffmpeg_decoder_plugin.c
+++ b/src/decoder/ffmpeg_decoder_plugin.c
@@ -400,13 +400,6 @@ ffmpeg_decode(struct decoder *decoder, struct input_stream *input)
 		return;
 	}
 
-	if (avcodec_open(codec_context, codec)<0) {
-		g_warning("Could not open codec\n");
-		av_close_input_stream(format_context);
-		mpd_ffmpeg_stream_close(stream);
-		return;
-	}
-
 	GError *error = NULL;
 	struct audio_format audio_format;
 	if (!audio_format_init_checked(&audio_format,
@@ -415,7 +408,18 @@ ffmpeg_decode(struct decoder *decoder, struct input_stream *input)
 				       codec_context->channels, &error)) {
 		g_warning("%s", error->message);
 		g_error_free(error);
-		avcodec_close(codec_context);
+		av_close_input_stream(format_context);
+		mpd_ffmpeg_stream_close(stream);
+		return;
+	}
+
+	/* the audio format must be read from AVCodecContext by now,
+	   because avcodec_open() has been demonstrated to fill bogus
+	   values into AVCodecContext.channels - a change that will be
+	   reverted later by avcodec_decode_audio3() */
+
+	if (avcodec_open(codec_context, codec)<0) {
+		g_warning("Could not open codec\n");
 		av_close_input_stream(format_context);
 		mpd_ffmpeg_stream_close(stream);
 		return;
diff --git a/src/decoder_api.c b/src/decoder_api.c
index 9fdb71311..3d7f20c50 100644
--- a/src/decoder_api.c
+++ b/src/decoder_api.c
@@ -96,6 +96,12 @@ decoder_prepare_initial_seek(struct decoder *decoder)
 		return true;
 
 	if (decoder->initial_seek_pending) {
+		if (!dc->seekable) {
+			/* seeking is not possible */
+			decoder->initial_seek_pending = false;
+			return false;
+		}
+
 		if (dc->command == DECODE_COMMAND_NONE) {
 			/* begin initial seek */
 
diff --git a/src/directory.h b/src/directory.h
index ce9c96cd2..6f693ec44 100644
--- a/src/directory.h
+++ b/src/directory.h
@@ -46,7 +46,7 @@ struct directory {
 	time_t mtime;
 	ino_t inode;
 	dev_t device;
-	unsigned stat; /* not needed if ino_t == dev_t == 0 is impossible */
+	bool have_stat; /* not needed if ino_t == dev_t == 0 is impossible */
 	char path[sizeof(long)];
 };
 
diff --git a/src/encoder/flac_encoder.c b/src/encoder/flac_encoder.c
index 8b315d710..9f60bdae5 100644
--- a/src/encoder/flac_encoder.c
+++ b/src/encoder/flac_encoder.c
@@ -22,6 +22,8 @@
 #include "encoder_plugin.h"
 #include "audio_format.h"
 #include "pcm_buffer.h"
+#include "fifo_buffer.h"
+#include "growing_fifo.h"
 
 #include <assert.h>
 #include <string.h>
@@ -38,8 +40,11 @@ struct flac_encoder {
 
 	struct pcm_buffer expand_buffer;
 
-	struct pcm_buffer buffer;
-	size_t buffer_length;
+	/**
+	 * This buffer will hold encoded data from libFLAC until it is
+	 * picked up with flac_encoder_read().
+	 */
+	struct fifo_buffer *output_buffer;
 };
 
 extern const struct encoder_plugin flac_encoder_plugin;
@@ -140,11 +145,8 @@ flac_write_callback(G_GNUC_UNUSED const FLAC__StreamEncoder *fse,
 {
 	struct flac_encoder *encoder = (struct flac_encoder *) client_data;
 
-	char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length + bytes);
-
 	//transfer data to buffer
-	memcpy( buffer + encoder->buffer_length, data, bytes);
-	encoder->buffer_length += bytes;
+	growing_fifo_append(&encoder->output_buffer, data, bytes);
 
 	return FLAC__STREAM_ENCODER_WRITE_STATUS_OK;
 }
@@ -156,8 +158,8 @@ flac_encoder_close(struct encoder *_encoder)
 
 	FLAC__stream_encoder_delete(encoder->fse);
 
-	pcm_buffer_deinit(&encoder->buffer);
 	pcm_buffer_deinit(&encoder->expand_buffer);
+	fifo_buffer_free(encoder->output_buffer);
 }
 
 static bool
@@ -201,10 +203,10 @@ flac_encoder_open(struct encoder *_encoder, struct audio_format *audio_format,
 		return false;
 	}
 
-	encoder->buffer_length = 0;
-	pcm_buffer_init(&encoder->buffer);
 	pcm_buffer_init(&encoder->expand_buffer);
 
+	encoder->output_buffer = growing_fifo_new();
+
 	/* this immediately outputs data through callback */
 
 #if !defined(FLAC_API_VERSION_CURRENT) || FLAC_API_VERSION_CURRENT <= 7
@@ -325,16 +327,18 @@ static size_t
 flac_encoder_read(struct encoder *_encoder, void *dest, size_t length)
 {
 	struct flac_encoder *encoder = (struct flac_encoder *)_encoder;
-	char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length);
-
-	if (length > encoder->buffer_length)
-		length = encoder->buffer_length;
 
-	memcpy(dest, buffer, length);
+	size_t max_length;
+	const char *src = fifo_buffer_read(encoder->output_buffer,
+					   &max_length);
+	if (src == NULL)
+		return 0;
 
-	encoder->buffer_length -= length;
-	memmove(buffer, buffer + length, encoder->buffer_length);
+	if (length > max_length)
+		length = max_length;
 
+	memcpy(dest, src, length);
+	fifo_buffer_consume(encoder->output_buffer, length);
 	return length;
 }
 
diff --git a/src/encoder/null_encoder.c b/src/encoder/null_encoder.c
index e83eaf2ba..48cdf139b 100644
--- a/src/encoder/null_encoder.c
+++ b/src/encoder/null_encoder.c
@@ -20,7 +20,8 @@
 #include "config.h"
 #include "encoder_api.h"
 #include "encoder_plugin.h"
-#include "pcm_buffer.h"
+#include "fifo_buffer.h"
+#include "growing_fifo.h"
 
 #include <assert.h>
 #include <string.h>
@@ -28,8 +29,7 @@
 struct null_encoder {
 	struct encoder encoder;
 
-	struct pcm_buffer buffer;
-	size_t buffer_length;
+	struct fifo_buffer *buffer;
 };
 
 extern const struct encoder_plugin null_encoder_plugin;
@@ -65,7 +65,7 @@ null_encoder_close(struct encoder *_encoder)
 {
 	struct null_encoder *encoder = (struct null_encoder *)_encoder;
 
-	pcm_buffer_deinit(&encoder->buffer);
+	fifo_buffer_free(encoder->buffer);
 }
 
 
@@ -76,9 +76,7 @@ null_encoder_open(struct encoder *_encoder,
 {
 	struct null_encoder *encoder = (struct null_encoder *)_encoder;
 
-	encoder->buffer_length = 0;
-	pcm_buffer_init(&encoder->buffer);
-
+	encoder->buffer = growing_fifo_new();
 	return true;
 }
 
@@ -88,28 +86,26 @@ null_encoder_write(struct encoder *_encoder,
 		   G_GNUC_UNUSED GError **error)
 {
 	struct null_encoder *encoder = (struct null_encoder *)_encoder;
-	char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length + length);
-
-	memcpy(buffer+encoder->buffer_length, data, length);
 
-	encoder->buffer_length += length;
-	return true;
+	growing_fifo_append(&encoder->buffer, data, length);
+	return length;
 }
 
 static size_t
 null_encoder_read(struct encoder *_encoder, void *dest, size_t length)
 {
 	struct null_encoder *encoder = (struct null_encoder *)_encoder;
-	char *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length);
-
-	if (length > encoder->buffer_length)
-		length = encoder->buffer_length;
 
-	memcpy(dest, buffer, length);
+	size_t max_length;
+	const void *src = fifo_buffer_read(encoder->buffer, &max_length);
+	if (src == NULL)
+		return 0;
 
-	encoder->buffer_length -= length;
-	memmove(buffer, buffer + length, encoder->buffer_length);
+	if (length > max_length)
+		length = max_length;
 
+	memcpy(dest, src, length);
+	fifo_buffer_consume(encoder->buffer, length);
 	return length;
 }
 
diff --git a/src/encoder/wave_encoder.c b/src/encoder/wave_encoder.c
index 6ebacab7d..67c3ce085 100644
--- a/src/encoder/wave_encoder.c
+++ b/src/encoder/wave_encoder.c
@@ -20,7 +20,8 @@
 #include "config.h"
 #include "encoder_api.h"
 #include "encoder_plugin.h"
-#include "pcm_buffer.h"
+#include "fifo_buffer.h"
+#include "growing_fifo.h"
 
 #include <assert.h>
 #include <string.h>
@@ -29,8 +30,7 @@ struct wave_encoder {
 	struct encoder encoder;
 	unsigned bits;
 
-	struct pcm_buffer buffer;
-	size_t buffer_length;
+	struct fifo_buffer *buffer;
 };
 
 struct wave_header {
@@ -92,7 +92,6 @@ wave_encoder_init(G_GNUC_UNUSED const struct config_param *param,
 
 	encoder = g_new(struct wave_encoder, 1);
 	encoder_struct_init(&encoder->encoder, &wave_encoder_plugin);
-	pcm_buffer_init(&encoder->buffer);
 
 	return &encoder->encoder;
 }
@@ -102,7 +101,6 @@ wave_encoder_finish(struct encoder *_encoder)
 {
 	struct wave_encoder *encoder = (struct wave_encoder *)_encoder;
 
-	pcm_buffer_deinit(&encoder->buffer);
 	g_free(encoder);
 }
 
@@ -112,7 +110,6 @@ wave_encoder_open(struct encoder *_encoder,
 		  G_GNUC_UNUSED GError **error)
 {
 	struct wave_encoder *encoder = (struct wave_encoder *)_encoder;
-	void *buffer;
 
 	assert(audio_format_valid(audio_format));
 
@@ -125,6 +122,11 @@ wave_encoder_open(struct encoder *_encoder,
 		encoder->bits = 16;
 		break;
 
+	case SAMPLE_FORMAT_S24:
+		audio_format->format = SAMPLE_FORMAT_S24_P32;
+		encoder->bits = 24;
+		break;
+
 	case SAMPLE_FORMAT_S24_P32:
 		encoder->bits = 24;
 		break;
@@ -139,19 +141,29 @@ wave_encoder_open(struct encoder *_encoder,
 		break;
 	}
 
-	buffer = pcm_buffer_get(&encoder->buffer, sizeof(struct wave_header) );
+	encoder->buffer = growing_fifo_new();
+	struct wave_header *header =
+		growing_fifo_write(&encoder->buffer, sizeof(*header));
 
 	/* create PCM wave header in initial buffer */
-	fill_wave_header((struct wave_header *) buffer,
+	fill_wave_header(header,
 			audio_format->channels,
 			 encoder->bits,
 			audio_format->sample_rate,
 			 (encoder->bits / 8) * audio_format->channels );
+	fifo_buffer_append(encoder->buffer, sizeof(*header));
 
-	encoder->buffer_length = sizeof(struct wave_header);
 	return true;
 }
 
+static void
+wave_encoder_close(struct encoder *_encoder)
+{
+	struct wave_encoder *encoder = (struct wave_encoder *)_encoder;
+
+	fifo_buffer_free(encoder->buffer);
+}
+
 static inline size_t
 pcm16_to_wave(uint16_t *dst16, const uint16_t *src16, size_t length)
 {
@@ -198,9 +210,8 @@ wave_encoder_write(struct encoder *_encoder,
 		   G_GNUC_UNUSED GError **error)
 {
 	struct wave_encoder *encoder = (struct wave_encoder *)_encoder;
-	void *dst;
 
-	dst = pcm_buffer_get(&encoder->buffer, encoder->buffer_length + length);
+	void *dst = growing_fifo_write(&encoder->buffer, length);
 
 #if (G_BYTE_ORDER == G_LITTLE_ENDIAN)
 	switch (encoder->bits) {
@@ -232,7 +243,7 @@ wave_encoder_write(struct encoder *_encoder,
 #error G_BYTE_ORDER set to G_PDP_ENDIAN is not supported by wave_encoder
 #endif
 
-	encoder->buffer_length += length;
+	fifo_buffer_append(encoder->buffer, length);
 	return true;
 }
 
@@ -240,16 +251,17 @@ static size_t
 wave_encoder_read(struct encoder *_encoder, void *dest, size_t length)
 {
 	struct wave_encoder *encoder = (struct wave_encoder *)_encoder;
-	uint8_t *buffer = pcm_buffer_get(&encoder->buffer, encoder->buffer_length );
-
-	if (length > encoder->buffer_length)
-		length = encoder->buffer_length;
 
-	memcpy(dest, buffer, length);
+	size_t max_length;
+	const void *src = fifo_buffer_read(encoder->buffer, &max_length);
+	if (src == NULL)
+		return 0;
 
-	encoder->buffer_length -= length;
-	memmove(buffer, buffer + length, encoder->buffer_length);
+	if (length > max_length)
+		length = max_length;
 
+	memcpy(dest, src, length);
+	fifo_buffer_consume(encoder->buffer, length);
 	return length;
 }
 
@@ -264,6 +276,7 @@ const struct encoder_plugin wave_encoder_plugin = {
 	.init = wave_encoder_init,
 	.finish = wave_encoder_finish,
 	.open = wave_encoder_open,
+	.close = wave_encoder_close,
 	.write = wave_encoder_write,
 	.read = wave_encoder_read,
 	.get_mime_type = wave_encoder_get_mime_type,
diff --git a/src/event_pipe.c b/src/event_pipe.c
index 890d89f24..85fd6d917 100644
--- a/src/event_pipe.c
+++ b/src/event_pipe.c
@@ -21,7 +21,6 @@
 #include "event_pipe.h"
 #include "fd_util.h"
 #include "mpd_error.h"
-#include "glib_socket.h"
 
 #include <stdbool.h>
 #include <assert.h>
@@ -95,7 +94,11 @@ void event_pipe_init(void)
 	if (ret < 0)
 		MPD_ERROR("Couldn't open pipe: %s", strerror(errno));
 
-	channel = g_io_channel_new_socket(event_pipe[0]);
+#ifndef G_OS_WIN32
+	channel = g_io_channel_unix_new(event_pipe[0]);
+#else
+	channel = g_io_channel_win32_new_fd(event_pipe[0]);
+#endif
 	g_io_channel_set_encoding(channel, NULL, NULL);
 	g_io_channel_set_buffered(channel, false);
 
diff --git a/src/fifo_buffer.c b/src/fifo_buffer.c
index e5735f5eb..915fb0579 100644
--- a/src/fifo_buffer.c
+++ b/src/fifo_buffer.c
@@ -58,6 +58,39 @@ fifo_buffer_new(size_t size)
 	return buffer;
 }
 
+static void
+fifo_buffer_move(struct fifo_buffer *buffer);
+
+struct fifo_buffer *
+fifo_buffer_realloc(struct fifo_buffer *buffer, size_t new_size)
+{
+	if (buffer == NULL)
+		return new_size > 0
+			? fifo_buffer_new(new_size)
+			: NULL;
+
+	/* existing data must fit in new size */
+	assert(new_size >= buffer->end - buffer->start);
+
+	if (new_size == 0) {
+		fifo_buffer_free(buffer);
+		return NULL;
+	}
+
+	/* compress the buffer when we're shrinking and the tail of
+	   the buffer would exceed the new size */
+	if (buffer->end > new_size)
+		fifo_buffer_move(buffer);
+
+	/* existing data must fit in new size: second check */
+	assert(buffer->end <= new_size);
+
+	buffer = g_realloc(buffer, sizeof(*buffer) - sizeof(buffer->buffer) +
+			   new_size);
+	buffer->size = new_size;
+	return buffer;
+}
+
 void
 fifo_buffer_free(struct fifo_buffer *buffer)
 {
@@ -66,6 +99,22 @@ fifo_buffer_free(struct fifo_buffer *buffer)
 	g_free(buffer);
 }
 
+size_t
+fifo_buffer_capacity(const struct fifo_buffer *buffer)
+{
+	assert(buffer != NULL);
+
+	return buffer->size;
+}
+
+size_t
+fifo_buffer_available(const struct fifo_buffer *buffer)
+{
+	assert(buffer != NULL);
+
+	return buffer->end - buffer->start;
+}
+
 void
 fifo_buffer_clear(struct fifo_buffer *buffer)
 {
diff --git a/src/fifo_buffer.h b/src/fifo_buffer.h
index 2730207b5..3bdb23938 100644
--- a/src/fifo_buffer.h
+++ b/src/fifo_buffer.h
@@ -57,12 +57,37 @@ struct fifo_buffer *
 fifo_buffer_new(size_t size);
 
 /**
+ * Change the capacity of the #fifo_buffer, while preserving existing
+ * data.
+ *
+ * @param buffer the old buffer, may be NULL
+ * @param new_size the requested new size of the #fifo_buffer; must
+ * not be smaller than the data which is stored in the old buffer
+ * @return the new buffer, may be NULL if the requested new size is 0
+ */
+struct fifo_buffer *
+fifo_buffer_realloc(struct fifo_buffer *buffer, size_t new_size);
+
+/**
  * Frees the resources consumed by this #fifo_buffer object.
  */
 void
 fifo_buffer_free(struct fifo_buffer *buffer);
 
 /**
+ * Return the capacity of the buffer, i.e. the size that was passed to
+ * fifo_buffer_new().
+ */
+size_t
+fifo_buffer_capacity(const struct fifo_buffer *buffer);
+
+/**
+ * Return the number of bytes currently stored in the buffer.
+ */
+size_t
+fifo_buffer_available(const struct fifo_buffer *buffer);
+
+/**
  * Clears all data currently in this #fifo_buffer object.  This does
  * not overwrite the actuall buffer; it just resets the internal
  * pointers.
diff --git a/src/growing_fifo.c b/src/growing_fifo.c
new file mode 100644
index 000000000..88431f60e
--- /dev/null
+++ b/src/growing_fifo.c
@@ -0,0 +1,90 @@
+/*
+ * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "growing_fifo.h"
+#include "fifo_buffer.h"
+
+#include <assert.h>
+#include <string.h>
+
+/**
+ * Align buffer sizes at 8 kB boundaries.  Must be a power of two.
+ */
+static const size_t GROWING_FIFO_ALIGN = 8192;
+
+/**
+ * Align the specified size to the next #GROWING_FIFO_ALIGN boundary.
+ */
+static size_t
+align(size_t size)
+{
+	return ((size - 1) | (GROWING_FIFO_ALIGN - 1)) + 1;
+}
+
+struct fifo_buffer *
+growing_fifo_new(void)
+{
+	return fifo_buffer_new(GROWING_FIFO_ALIGN);
+}
+
+void *
+growing_fifo_write(struct fifo_buffer **buffer_p, size_t length)
+{
+	assert(buffer_p != NULL);
+
+	struct fifo_buffer *buffer = *buffer_p;
+	assert(buffer != NULL);
+
+	size_t max_length;
+	void *p = fifo_buffer_write(buffer, &max_length);
+	if (p != NULL && max_length >= length)
+		return p;
+
+	/* grow */
+	size_t new_size = fifo_buffer_available(buffer) + length;
+	assert(new_size > fifo_buffer_capacity(buffer));
+	*buffer_p = buffer = fifo_buffer_realloc(buffer, align(new_size));
+
+	/* try again */
+	p = fifo_buffer_write(buffer, &max_length);
+	assert(p != NULL);
+	assert(max_length >= length);
+
+	return p;
+}
+
+void
+growing_fifo_append(struct fifo_buffer **buffer_p,
+		    const void *data, size_t length)
+{
+	void *p = growing_fifo_write(buffer_p, length);
+	memcpy(p, data, length);
+	fifo_buffer_append(*buffer_p, length);
+}
diff --git a/src/growing_fifo.h b/src/growing_fifo.h
new file mode 100644
index 000000000..723c3b3ff
--- /dev/null
+++ b/src/growing_fifo.h
@@ -0,0 +1,73 @@
+/*
+ * Copyright (C) 2003-2011 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the
+ * distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE
+ * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** \file
+ *
+ * Helper functions for our FIFO buffer library (fifo_buffer.h) that
+ * allows growing the buffer on demand.
+ *
+ * This library is not thread safe.
+ */
+
+#ifndef MPD_GROWING_FIFO_H
+#define MPD_GROWING_FIFO_H
+
+#include <stddef.h>
+
+struct fifo_buffer;
+
+/**
+ * Allocate a new #fifo_buffer with the default size.
+ */
+struct fifo_buffer *
+growing_fifo_new(void);
+
+/**
+ * Prepares writing to the buffer, see fifo_buffer_write() for
+ * details.  The difference is that this function will automatically
+ * grow the buffer if it is too small.
+ *
+ * The caller is responsible for limiting the capacity of the buffer.
+ *
+ * @param length the number of bytes that will be written
+ * @return a pointer to the end of the buffer (will not be NULL)
+ */
+void *
+growing_fifo_write(struct fifo_buffer **buffer_p, size_t length);
+
+/**
+ * A helper function that combines growing_fifo_write(), memcpy(),
+ * fifo_buffer_append().
+ */
+void
+growing_fifo_append(struct fifo_buffer **buffer_p,
+		    const void *data, size_t length);
+
+#endif
diff --git a/src/mapper.c b/src/mapper.c
index 091db50b0..4aa4e0b14 100644
--- a/src/mapper.c
+++ b/src/mapper.c
@@ -31,6 +31,10 @@
 
 #include <assert.h>
 #include <string.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <errno.h>
+#include <dirent.h>
 
 static char *music_dir;
 static size_t music_dir_length;
@@ -52,24 +56,50 @@ strdup_chop_slash(const char *path_fs)
 }
 
 static void
+check_directory(const char *path)
+{
+	struct stat st;
+	if (stat(path, &st) < 0) {
+		g_warning("Failed to stat directory \"%s\": %s",
+			  path, g_strerror(errno));
+		return;
+	}
+
+	if (!S_ISDIR(st.st_mode)) {
+		g_warning("Not a directory: %s", path);
+		return;
+	}
+
+#ifndef WIN32
+	char *x = g_build_filename(path, ".", NULL);
+	if (stat(x, &st) < 0 && errno == EACCES)
+		g_warning("No permission to traverse (\"execute\") directory: %s",
+			  path);
+	g_free(x);
+#endif
+
+	DIR *dir = opendir(path);
+	if (dir == NULL && errno == EACCES)
+		g_warning("No permission to read directory: %s", path);
+	else
+		closedir(dir);
+}
+
+static void
 mapper_set_music_dir(const char *path)
 {
+	check_directory(path);
+
 	music_dir = strdup_chop_slash(path);
 	music_dir_length = strlen(music_dir);
-
-	if (!g_file_test(music_dir, G_FILE_TEST_IS_DIR))
-		g_warning("music directory is not a directory: \"%s\"",
-			  music_dir);
 }
 
 static void
 mapper_set_playlist_dir(const char *path)
 {
-	playlist_dir = g_strdup(path);
+	check_directory(path);
 
-	if (!g_file_test(playlist_dir, G_FILE_TEST_IS_DIR))
-		g_warning("playlist directory is not a directory: \"%s\"",
-			  playlist_dir);
+	playlist_dir = g_strdup(path);
 }
 
 void mapper_init(const char *_music_dir, const char *_playlist_dir)
diff --git a/src/path.c b/src/path.c
index 42e5a5c2a..59a91a0f7 100644
--- a/src/path.c
+++ b/src/path.c
@@ -27,6 +27,11 @@
 #include <assert.h>
 #include <string.h>
 
+#ifdef G_OS_WIN32
+#include <windows.h> // for GetACP()
+#include <stdio.h> // for sprintf()
+#endif
+
 #undef G_LOG_DOMAIN
 #define G_LOG_DOMAIN "path"
 
@@ -85,11 +90,22 @@ void path_global_init(void)
 
 	charset = config_get_string(CONF_FS_CHARSET, NULL);
 	if (charset == NULL) {
+#ifndef G_OS_WIN32
 		const gchar **encodings;
 		g_get_filename_charsets(&encodings);
 
 		if (encodings[0] != NULL && *encodings[0] != '\0')
 			charset = encodings[0];
+#else /* G_OS_WIN32 */
+		/* Glib claims that file system encoding is always utf-8
+		 * on native Win32 (i.e. not Cygwin).
+		 * However this is true only if <gstdio.h> helpers are used.
+		 * MPD uses regular <stdio.h> functions.
+		 * Those functions use encoding determined by GetACP(). */
+		char win_charset[13];
+		sprintf(win_charset, "cp%u", GetACP());
+		charset = win_charset;
+#endif
 	}
 
 	if (charset) {
diff --git a/src/pcm_buffer.c b/src/pcm_buffer.c
index 12d7194a6..b277e768e 100644
--- a/src/pcm_buffer.c
+++ b/src/pcm_buffer.c
@@ -1,5 +1,9 @@
 /*
+<<<<<<< HEAD
  * Copyright (C) 2003-2011 The Music Player Daemon Project
+=======
+ * Copyright (C) 2003-2010 The Music Player Daemon Project
+>>>>>>> v0.16.x
  * http://www.musicpd.org
  *
  * This program is free software; you can redistribute it and/or modify
@@ -19,17 +23,30 @@
 
 #include "pcm_buffer.h"
 
+/**
+ * Align the specified size to the next 8k boundary.
+ */
+G_GNUC_CONST
+static size_t
+align_8k(size_t size)
+{
+	return ((size - 1) | 0x1fff) + 1;
+}
+
 void *
 pcm_buffer_get(struct pcm_buffer *buffer, size_t size)
 {
+	assert(buffer != NULL);
+
 	if (buffer->size < size) {
 		/* free the old buffer */
 		g_free(buffer->buffer);
 
-		/* allocate a new buffer; align at 8 kB boundaries */
-		buffer->size = ((size - 1) | 0x1fff) + 1;
+		buffer->size = align_8k(size);
 		buffer->buffer = g_malloc(buffer->size);
 	}
 
+	assert(buffer->size >= size);
+
 	return buffer->buffer;
 }
diff --git a/src/pcm_buffer.h b/src/pcm_buffer.h
index 67973b750..502dd3db1 100644
--- a/src/pcm_buffer.h
+++ b/src/pcm_buffer.h
@@ -22,6 +22,8 @@
 
 #include <glib.h>
 
+#include <assert.h>
+
 /**
  * Manager for a temporary buffer which grows as needed.  We could
  * allocate a new buffer every time pcm_convert() is called, but that
@@ -39,6 +41,8 @@ struct pcm_buffer {
 static inline void
 pcm_buffer_init(struct pcm_buffer *buffer)
 {
+	assert(buffer != NULL);
+
 	buffer->buffer = NULL;
 	buffer->size = 0;
 }
@@ -49,6 +53,8 @@ pcm_buffer_init(struct pcm_buffer *buffer)
 static inline void
 pcm_buffer_deinit(struct pcm_buffer *buffer)
 {
+	assert(buffer != NULL);
+
 	g_free(buffer->buffer);
 
 	buffer->buffer = NULL;
diff --git a/src/stats.c b/src/stats.c
index ec39ff5b7..fe6a064a6 100644
--- a/src/stats.c
+++ b/src/stats.c
@@ -123,6 +123,6 @@ int stats_print(struct client *client)
 		      (long)g_timer_elapsed(stats.timer, NULL),
 		      (long)(pc_get_total_play_time(client->player_control) + 0.5),
 		      stats.song_duration,
-		      db_get_mtime());
+		      (long)db_get_mtime());
 	return 0;
 }
diff --git a/src/update_walk.c b/src/update_walk.c
index e70ead173..1fabc8682 100644
--- a/src/update_walk.c
+++ b/src/update_walk.c
@@ -86,7 +86,7 @@ directory_set_stat(struct directory *dir, const struct stat *st)
 {
 	dir->inode = st->st_ino;
 	dir->device = st->st_dev;
-	dir->stat = 1;
+	dir->have_stat = true;
 }
 
 static void
@@ -346,7 +346,7 @@ inodeFoundInParent(struct directory *parent, ino_t inode, dev_t device)
 {
 #ifndef G_OS_WIN32
 	while (parent) {
-		if (!parent->stat && statDirectory(parent) < 0)
+		if (!parent->have_stat && statDirectory(parent) < 0)
 			return -1;
 		if (parent->inode == inode && parent->device == device) {
 			g_debug("recursive directory found");