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-rw-r--r--src/pulsecore/play-memchunk.c117
1 files changed, 117 insertions, 0 deletions
diff --git a/src/pulsecore/play-memchunk.c b/src/pulsecore/play-memchunk.c
new file mode 100644
index 00000000..7ac579e9
--- /dev/null
+++ b/src/pulsecore/play-memchunk.c
@@ -0,0 +1,117 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ PulseAudio is free software; you can redistribute it and/or modify
+ it under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2 of the License,
+ or (at your option) any later version.
+
+ PulseAudio 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 Lesser General Public License
+ along with PulseAudio; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+ USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <assert.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/sink-input.h>
+#include <pulsecore/gccmacro.h>
+
+#include "play-memchunk.h"
+
+static void sink_input_kill(pa_sink_input *i) {
+ pa_memchunk *c;
+ assert(i && i->userdata);
+ c = i->userdata;
+
+ pa_sink_input_disconnect(i);
+ pa_sink_input_unref(i);
+
+ pa_memblock_unref(c->memblock);
+ pa_xfree(c);
+}
+
+static int sink_input_peek(pa_sink_input *i, pa_memchunk *chunk) {
+ pa_memchunk *c;
+ assert(i && chunk && i->userdata);
+ c = i->userdata;
+
+ if (c->length <= 0)
+ return -1;
+
+ assert(c->memblock && c->memblock->length);
+ *chunk = *c;
+ pa_memblock_ref(c->memblock);
+
+ return 0;
+}
+
+static void si_kill(PA_GCC_UNUSED pa_mainloop_api *m, void *i) {
+ sink_input_kill(i);
+}
+
+static void sink_input_drop(pa_sink_input *i, const pa_memchunk*chunk, size_t length) {
+ pa_memchunk *c;
+ assert(i && length && i->userdata);
+ c = i->userdata;
+
+ assert(!memcmp(chunk, c, sizeof(chunk)));
+ assert(length <= c->length);
+
+ c->length -= length;
+ c->index += length;
+
+ if (c->length <= 0)
+ pa_mainloop_api_once(i->sink->core->mainloop, si_kill, i);
+}
+
+int pa_play_memchunk(
+ pa_sink *sink,
+ const char *name,
+ const pa_sample_spec *ss,
+ const pa_channel_map *map,
+ const pa_memchunk *chunk,
+ pa_cvolume *cvolume) {
+
+ pa_sink_input *si;
+ pa_memchunk *nchunk;
+
+ assert(sink);
+ assert(ss);
+ assert(chunk);
+
+ if (cvolume && pa_cvolume_is_muted(cvolume))
+ return 0;
+
+ if (!(si = pa_sink_input_new(sink, name, __FILE__, ss, map, cvolume, 0, PA_RESAMPLER_INVALID)))
+ return -1;
+
+ si->peek = sink_input_peek;
+ si->drop = sink_input_drop;
+ si->kill = sink_input_kill;
+
+ si->userdata = nchunk = pa_xnew(pa_memchunk, 1);
+ *nchunk = *chunk;
+
+ pa_memblock_ref(chunk->memblock);
+
+ pa_sink_notify(sink);
+
+ return 0;
+}