aboutsummaryrefslogtreecommitdiffstats
path: root/src/DecoderControl.cxx
diff options
context:
space:
mode:
authorMax Kellermann <max@duempel.org>2013-01-04 08:41:16 +0100
committerMax Kellermann <max@duempel.org>2013-01-04 09:41:45 +0100
commite12cc01aa4b25798a2887ac6c5e01309e744ea8b (patch)
treecbf58024a0fb6d470a87c420ddcdf0ac2f0f15d6 /src/DecoderControl.cxx
parent71c697288b2325011f7302437aac912e88d6b6b4 (diff)
downloadmpd-e12cc01aa4b25798a2887ac6c5e01309e744ea8b.tar.gz
mpd-e12cc01aa4b25798a2887ac6c5e01309e744ea8b.tar.xz
mpd-e12cc01aa4b25798a2887ac6c5e01309e744ea8b.zip
decoder_*: convert to C++
Diffstat (limited to 'src/DecoderControl.cxx')
-rw-r--r--src/DecoderControl.cxx226
1 files changed, 226 insertions, 0 deletions
diff --git a/src/DecoderControl.cxx b/src/DecoderControl.cxx
new file mode 100644
index 000000000..bd075ed71
--- /dev/null
+++ b/src/DecoderControl.cxx
@@ -0,0 +1,226 @@
+/*
+ * Copyright (C) 2003-2013 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "config.h"
+#include "DecoderControl.hxx"
+#include "song.h"
+
+extern "C" {
+#include "pipe.h"
+}
+
+#include <assert.h>
+
+#undef G_LOG_DOMAIN
+#define G_LOG_DOMAIN "decoder_control"
+
+struct decoder_control *
+dc_new(GCond *client_cond)
+{
+ struct decoder_control *dc = g_new(struct decoder_control, 1);
+
+ dc->thread = NULL;
+
+ dc->mutex = g_mutex_new();
+ dc->cond = g_cond_new();
+ dc->client_cond = client_cond;
+
+ dc->state = DECODE_STATE_STOP;
+ dc->command = DECODE_COMMAND_NONE;
+
+ dc->song = NULL;
+
+ dc->replay_gain_db = 0;
+ dc->replay_gain_prev_db = 0;
+ dc->mixramp_start = NULL;
+ dc->mixramp_end = NULL;
+ dc->mixramp_prev_end = NULL;
+
+ return dc;
+}
+
+void
+dc_free(struct decoder_control *dc)
+{
+ dc_clear_error(dc);
+
+ if (dc->song != NULL)
+ song_free(dc->song);
+
+ g_cond_free(dc->cond);
+ g_mutex_free(dc->mutex);
+ g_free(dc->mixramp_start);
+ g_free(dc->mixramp_end);
+ g_free(dc->mixramp_prev_end);
+ g_free(dc);
+}
+
+static void
+dc_command_wait_locked(struct decoder_control *dc)
+{
+ while (dc->command != DECODE_COMMAND_NONE)
+ g_cond_wait(dc->client_cond, dc->mutex);
+}
+
+static void
+dc_command_locked(struct decoder_control *dc, enum decoder_command cmd)
+{
+ dc->command = cmd;
+ decoder_signal(dc);
+ dc_command_wait_locked(dc);
+}
+
+static void
+dc_command(struct decoder_control *dc, enum decoder_command cmd)
+{
+ decoder_lock(dc);
+ dc_clear_error(dc);
+ dc_command_locked(dc, cmd);
+ decoder_unlock(dc);
+}
+
+static void
+dc_command_async(struct decoder_control *dc, enum decoder_command cmd)
+{
+ decoder_lock(dc);
+
+ dc->command = cmd;
+ decoder_signal(dc);
+
+ decoder_unlock(dc);
+}
+
+bool
+decoder_is_current_song(const struct decoder_control *dc,
+ const struct song *song)
+{
+ assert(dc != NULL);
+ assert(song != NULL);
+
+ switch (dc->state) {
+ case DECODE_STATE_STOP:
+ case DECODE_STATE_ERROR:
+ return false;
+
+ case DECODE_STATE_START:
+ case DECODE_STATE_DECODE:
+ return song_equals(dc->song, song);
+ }
+
+ assert(false);
+ return false;
+}
+
+void
+dc_start(struct decoder_control *dc, struct song *song,
+ unsigned start_ms, unsigned end_ms,
+ struct music_buffer *buffer, struct music_pipe *pipe)
+{
+ assert(song != NULL);
+ assert(buffer != NULL);
+ assert(pipe != NULL);
+ assert(music_pipe_empty(pipe));
+
+ if (dc->song != NULL)
+ song_free(dc->song);
+
+ dc->song = song;
+ dc->start_ms = start_ms;
+ dc->end_ms = end_ms;
+ dc->buffer = buffer;
+ dc->pipe = pipe;
+ dc_command(dc, DECODE_COMMAND_START);
+}
+
+void
+dc_stop(struct decoder_control *dc)
+{
+ decoder_lock(dc);
+
+ if (dc->command != DECODE_COMMAND_NONE)
+ /* Attempt to cancel the current command. If it's too
+ late and the decoder thread is already executing
+ the old command, we'll call STOP again in this
+ function (see below). */
+ dc_command_locked(dc, DECODE_COMMAND_STOP);
+
+ if (dc->state != DECODE_STATE_STOP && dc->state != DECODE_STATE_ERROR)
+ dc_command_locked(dc, DECODE_COMMAND_STOP);
+
+ decoder_unlock(dc);
+}
+
+bool
+dc_seek(struct decoder_control *dc, double where)
+{
+ assert(dc->state != DECODE_STATE_START);
+ assert(where >= 0.0);
+
+ if (dc->state == DECODE_STATE_STOP ||
+ dc->state == DECODE_STATE_ERROR || !dc->seekable)
+ return false;
+
+ dc->seek_where = where;
+ dc->seek_error = false;
+ dc_command(dc, DECODE_COMMAND_SEEK);
+
+ if (dc->seek_error)
+ return false;
+
+ return true;
+}
+
+void
+dc_quit(struct decoder_control *dc)
+{
+ assert(dc->thread != NULL);
+
+ dc->quit = true;
+ dc_command_async(dc, DECODE_COMMAND_STOP);
+
+ g_thread_join(dc->thread);
+ dc->thread = NULL;
+}
+
+void
+dc_mixramp_start(struct decoder_control *dc, char *mixramp_start)
+{
+ assert(dc != NULL);
+
+ g_free(dc->mixramp_start);
+ dc->mixramp_start = mixramp_start;
+}
+
+void
+dc_mixramp_end(struct decoder_control *dc, char *mixramp_end)
+{
+ assert(dc != NULL);
+
+ g_free(dc->mixramp_end);
+ dc->mixramp_end = mixramp_end;
+}
+
+void
+dc_mixramp_prev_end(struct decoder_control *dc, char *mixramp_prev_end)
+{
+ assert(dc != NULL);
+
+ g_free(dc->mixramp_prev_end);
+ dc->mixramp_prev_end = mixramp_prev_end;
+}