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-rw-r--r--src/pulsecore/sound-file-stream.c339
1 files changed, 339 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..bb1f3e9a
--- /dev/null
+++ b/src/pulsecore/sound-file-stream.c
@@ -0,0 +1,339 @@
+/* $Id$ */
+
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+
+ 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 <stdio.h>
+#include <string.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <errno.h>
+
+#include <sndfile.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/sink-input.h>
+#include <pulsecore/log.h>
+#include <pulsecore/thread-mq.h>
+#include <pulsecore/core-util.h>
+
+#include "sound-file-stream.h"
+
+typedef struct file_stream {
+ pa_msgobject parent;
+ pa_core *core;
+ SNDFILE *sndfile;
+ pa_sink_input *sink_input;
+ pa_memchunk memchunk;
+ sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames);
+ size_t drop;
+} file_stream;
+
+enum {
+ FILE_STREAM_MESSAGE_UNLINK
+};
+
+PA_DECLARE_CLASS(file_stream);
+#define FILE_STREAM(o) (file_stream_cast(o))
+static PA_DEFINE_CHECK_TYPE(file_stream, pa_msgobject);
+
+static void file_stream_unlink(file_stream *u) {
+ pa_assert(u);
+
+ if (!u->sink_input)
+ return;
+
+ pa_sink_input_unlink(u->sink_input);
+
+ pa_sink_input_unref(u->sink_input);
+ u->sink_input = NULL;
+
+ /* Make sure we don't decrease the ref count twice. */
+ file_stream_unref(u);
+}
+
+static void file_stream_free(pa_object *o) {
+ file_stream *u = FILE_STREAM(o);
+ pa_assert(u);
+
+ file_stream_unlink(u);
+
+ if (u->memchunk.memblock)
+ pa_memblock_unref(u->memchunk.memblock);
+
+ if (u->sndfile)
+ sf_close(u->sndfile);
+
+ pa_xfree(u);
+}
+
+static int file_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
+ file_stream *u = FILE_STREAM(o);
+ file_stream_assert_ref(u);
+
+ switch (code) {
+ case FILE_STREAM_MESSAGE_UNLINK:
+ file_stream_unlink(u);
+ break;
+ }
+
+ return 0;
+}
+
+static void sink_input_kill_cb(pa_sink_input *i) {
+ pa_sink_input_assert_ref(i);
+
+ file_stream_unlink(FILE_STREAM(i->userdata));
+}
+
+static int sink_input_peek_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
+ file_stream *u;
+
+ pa_assert(i);
+ pa_assert(chunk);
+ u = FILE_STREAM(i->userdata);
+ file_stream_assert_ref(u);
+
+ if (!u->sndfile)
+ return -1;
+
+ for (;;) {
+
+ if (!u->memchunk.memblock) {
+
+ u->memchunk.memblock = pa_memblock_new(i->sink->core->mempool, length);
+ u->memchunk.index = 0;
+
+ if (u->readf_function) {
+ sf_count_t n;
+ void *p;
+ size_t fs = pa_frame_size(&i->sample_spec);
+
+ p = pa_memblock_acquire(u->memchunk.memblock);
+ n = u->readf_function(u->sndfile, p, length/fs);
+ pa_memblock_release(u->memchunk.memblock);
+
+ if (n <= 0)
+ n = 0;
+
+ u->memchunk.length = n * fs;
+ } else {
+ sf_count_t n;
+ void *p;
+
+ p = pa_memblock_acquire(u->memchunk.memblock);
+ n = sf_read_raw(u->sndfile, p, length);
+ pa_memblock_release(u->memchunk.memblock);
+
+ if (n <= 0)
+ n = 0;
+
+ u->memchunk.length = n;
+ }
+
+ if (u->memchunk.length <= 0) {
+
+ pa_memblock_unref(u->memchunk.memblock);
+ pa_memchunk_reset(&u->memchunk);
+
+ pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(u), FILE_STREAM_MESSAGE_UNLINK, NULL, 0, NULL, NULL);
+
+ sf_close(u->sndfile);
+ u->sndfile = NULL;
+
+ return -1;
+ }
+ }
+
+ pa_assert(u->memchunk.memblock);
+ pa_assert(u->memchunk.length > 0);
+
+ if (u->drop < u->memchunk.length) {
+ u->memchunk.index += u->drop;
+ u->memchunk.length -= u->drop;
+ u->drop = 0;
+ break;
+ }
+
+ u->drop -= u->memchunk.length;
+ pa_memblock_unref(u->memchunk.memblock);
+ pa_memchunk_reset(&u->memchunk);
+ }
+
+ *chunk = u->memchunk;
+ pa_memblock_ref(chunk->memblock);
+
+ pa_assert(chunk->length > 0);
+ pa_assert(u->drop <= 0);
+
+ return 0;
+}
+
+static void sink_input_drop_cb(pa_sink_input *i, size_t length) {
+ file_stream *u;
+
+ pa_assert(i);
+ pa_assert(length > 0);
+ u = FILE_STREAM(i->userdata);
+ file_stream_assert_ref(u);
+
+ if (u->memchunk.memblock) {
+
+ if (length < u->memchunk.length) {
+ u->memchunk.index += length;
+ u->memchunk.length -= length;
+ return;
+ }
+
+ length -= u->memchunk.length;
+ pa_memblock_unref(u->memchunk.memblock);
+ pa_memchunk_reset(&u->memchunk);
+ }
+
+ u->drop += length;
+}
+
+int pa_play_file(
+ pa_sink *sink,
+ const char *fname,
+ const pa_cvolume *volume) {
+
+ file_stream *u = NULL;
+ SF_INFO sfinfo;
+ pa_sample_spec ss;
+ pa_sink_input_new_data data;
+ int fd;
+
+ pa_assert(sink);
+ pa_assert(fname);
+
+ u = pa_msgobject_new(file_stream);
+ u->parent.parent.free = file_stream_free;
+ u->parent.process_msg = file_stream_process_msg;
+ u->core = sink->core;
+ u->sink_input = NULL;
+ pa_memchunk_reset(&u->memchunk);
+ u->sndfile = NULL;
+ u->readf_function = NULL;
+ u->drop = 0;
+
+ memset(&sfinfo, 0, sizeof(sfinfo));
+
+ if ((fd = open(fname, O_RDONLY
+#ifdef O_NOCTTY
+ |O_NOCTTY
+#endif
+ )) < 0) {
+ pa_log("Failed to open file %s: %s", fname, pa_cstrerror(errno));
+ goto fail;
+ }
+
+ /* FIXME: For now we just use posix_fadvise to avoid page faults
+ * when accessing the file data. Eventually we should move the
+ * file reader into the main event loop and pass the data over the
+ * asyncmsgq. */
+
+#ifdef HAVE_POSIX_FADVISE
+ if (posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL) < 0) {
+ pa_log_warn("POSIX_FADV_SEQUENTIAL failed: %s", pa_cstrerror(errno));
+ goto fail;
+ } else
+ pa_log_debug("POSIX_FADV_SEQUENTIAL succeeded.");
+
+ if (posix_fadvise(fd, 0, 0, POSIX_FADV_WILLNEED) < 0) {
+ pa_log_warn("POSIX_FADV_WILLNEED failed: %s", pa_cstrerror(errno));
+ goto fail;
+ } else
+ pa_log_debug("POSIX_FADV_WILLNEED succeeded.");
+#endif
+
+ if (!(u->sndfile = sf_open_fd(fd, SFM_READ, &sfinfo, 1))) {
+ pa_log("Failed to open file %s", fname);
+ pa_close(fd);
+ goto fail;
+ }
+
+ 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("Unsupported sample format in file %s", fname);
+ goto fail;
+ }
+
+ pa_sink_input_new_data_init(&data);
+ data.sink = sink;
+ data.driver = __FILE__;
+ data.name = fname;
+ pa_sink_input_new_data_set_sample_spec(&data, &ss);
+ pa_sink_input_new_data_set_volume(&data, volume);
+
+ if (!(u->sink_input = pa_sink_input_new(sink->core, &data, 0)))
+ goto fail;
+
+ u->sink_input->peek = sink_input_peek_cb;
+ u->sink_input->drop = sink_input_drop_cb;
+ u->sink_input->kill = sink_input_kill_cb;
+ u->sink_input->userdata = u;
+
+ pa_sink_input_put(u->sink_input);
+
+ /* The reference to u is dangling here, because we want to keep
+ * this stream around until it is fully played. */
+
+ return 0;
+
+fail:
+ if (u)
+ file_stream_unref(u);
+
+ return -1;
+}
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