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-rw-r--r--src/pulsecore/sound-file-stream.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/src/pulsecore/sound-file-stream.c b/src/pulsecore/sound-file-stream.c
new file mode 100644
index 00000000..386f5bd0
--- /dev/null
+++ b/src/pulsecore/sound-file-stream.c
@@ -0,0 +1,192 @@
+/* $Id$ */
+
+/***
+ 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 <sndfile.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/sink-input.h>
+#include <pulsecore/log.h>
+
+#include "sound-file-stream.h"
+
+#define BUF_SIZE (1024*10)
+
+struct userdata {
+ SNDFILE *sndfile;
+ pa_sink_input *sink_input;
+ pa_memchunk memchunk;
+ sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames);
+};
+
+static void free_userdata(struct userdata *u) {
+ assert(u);
+ if (u->sink_input) {
+ pa_sink_input_disconnect(u->sink_input);
+ pa_sink_input_unref(u->sink_input);
+ }
+
+ if (u->memchunk.memblock)
+ pa_memblock_unref(u->memchunk.memblock);
+ if (u->sndfile)
+ sf_close(u->sndfile);
+
+ pa_xfree(u);
+}
+
+static void sink_input_kill(pa_sink_input *i) {
+ assert(i && i->userdata);
+ free_userdata(i->userdata);
+}
+
+static int sink_input_peek(pa_sink_input *i, pa_memchunk *chunk) {
+ struct userdata *u;
+ assert(i && chunk && i->userdata);
+ u = i->userdata;
+
+ if (!u->memchunk.memblock) {
+ uint32_t fs = pa_frame_size(&i->sample_spec);
+ sf_count_t n;
+
+ u->memchunk.memblock = pa_memblock_new(BUF_SIZE, i->sink->core->memblock_stat);
+ u->memchunk.index = 0;
+
+ if (u->readf_function) {
+ if ((n = u->readf_function(u->sndfile, u->memchunk.memblock->data, BUF_SIZE/fs)) <= 0)
+ n = 0;
+
+ u->memchunk.length = n * fs;
+ } else {
+ if ((n = sf_read_raw(u->sndfile, u->memchunk.memblock->data, BUF_SIZE)) <= 0)
+ n = 0;
+
+ u->memchunk.length = n;
+ }
+
+ if (!u->memchunk.length) {
+ free_userdata(u);
+ return -1;
+ }
+ }
+
+ *chunk = u->memchunk;
+ pa_memblock_ref(chunk->memblock);
+ assert(chunk->length);
+ return 0;
+}
+
+static void sink_input_drop(pa_sink_input *i, const pa_memchunk*chunk, size_t length) {
+ struct userdata *u;
+ assert(i && chunk && length && i->userdata);
+ u = i->userdata;
+
+ assert(!memcmp(chunk, &u->memchunk, sizeof(chunk)));
+ assert(length <= u->memchunk.length);
+
+ u->memchunk.index += length;
+ u->memchunk.length -= length;
+
+ if (u->memchunk.length <= 0) {
+ pa_memblock_unref(u->memchunk.memblock);
+ u->memchunk.memblock = NULL;
+ u->memchunk.index = u->memchunk.length = 0;
+ }
+}
+
+int pa_play_file(pa_sink *sink, const char *fname, const pa_cvolume *volume) {
+ struct userdata *u = NULL;
+ SF_INFO sfinfo;
+ pa_sample_spec ss;
+ assert(sink && fname);
+
+ u = pa_xmalloc(sizeof(struct userdata));
+ u->sink_input = NULL;
+ u->memchunk.memblock = NULL;
+ u->memchunk.index = u->memchunk.length = 0;
+ u->sndfile = NULL;
+
+ memset(&sfinfo, 0, sizeof(sfinfo));
+
+ if (!(u->sndfile = sf_open(fname, SFM_READ, &sfinfo))) {
+ pa_log(__FILE__": Failed to open file %s", fname);
+ goto fail;
+ }
+
+ u->readf_function = NULL;
+
+ switch (sfinfo.format & 0xFF) {
+ case SF_FORMAT_PCM_16:
+ case SF_FORMAT_PCM_U8:
+ case SF_FORMAT_PCM_S8:
+ ss.format = PA_SAMPLE_S16NE;
+ u->readf_function = (sf_count_t (*)(SNDFILE *sndfile, void *ptr, sf_count_t frames)) sf_readf_short;
+ break;
+
+ case SF_FORMAT_ULAW:
+ ss.format = PA_SAMPLE_ULAW;
+ break;
+
+ case SF_FORMAT_ALAW:
+ ss.format = PA_SAMPLE_ALAW;
+ break;
+
+ case SF_FORMAT_FLOAT:
+ default:
+ ss.format = PA_SAMPLE_FLOAT32NE;
+ u->readf_function = (sf_count_t (*)(SNDFILE *sndfile, void *ptr, sf_count_t frames)) sf_readf_float;
+ break;
+ }
+
+ ss.rate = sfinfo.samplerate;
+ ss.channels = sfinfo.channels;
+
+ if (!pa_sample_spec_valid(&ss)) {
+ pa_log(__FILE__": Unsupported sample format in file %s", fname);
+ goto fail;
+ }
+
+ if (!(u->sink_input = pa_sink_input_new(sink, __FILE__, fname, &ss, NULL, volume, 0, -1)))
+ goto fail;
+
+ u->sink_input->peek = sink_input_peek;
+ u->sink_input->drop = sink_input_drop;
+ u->sink_input->kill = sink_input_kill;
+ u->sink_input->userdata = u;
+
+ pa_sink_notify(sink);
+
+ return 0;
+
+fail:
+ if (u)
+ free_userdata(u);
+
+ return -1;
+}