2 This file is part of PulseAudio.
4 Copyright 2004-2008 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
35 #include <pulse/xmalloc.h>
36 #include <pulse/util.h>
38 #include <pulsecore/core-error.h>
39 #include <pulsecore/sink-input.h>
40 #include <pulsecore/log.h>
41 #include <pulsecore/thread-mq.h>
42 #include <pulsecore/core-util.h>
43 #include <pulsecore/sample-util.h>
44 #include <pulsecore/sndfile-util.h>
46 #include "sound-file-stream.h"
48 #define MEMBLOCKQ_MAXLENGTH (16*1024*1024)
50 typedef struct file_stream {
53 pa_sink_input *sink_input;
56 sf_count_t (*readf_function)(SNDFILE *sndfile, void *ptr, sf_count_t frames);
58 /* We need this memblockq here to easily fulfill rewind requests
59 * (even beyond the file start!) */
60 pa_memblockq *memblockq;
64 FILE_STREAM_MESSAGE_UNLINK
67 PA_DECLARE_CLASS(file_stream);
68 #define FILE_STREAM(o) (file_stream_cast(o))
69 static PA_DEFINE_CHECK_TYPE(file_stream, pa_msgobject);
71 /* Called from main context */
72 static void file_stream_unlink(file_stream *u) {
78 pa_sink_input_unlink(u->sink_input);
79 pa_sink_input_unref(u->sink_input);
82 /* Make sure we don't decrease the ref count twice. */
86 /* Called from main context */
87 static void file_stream_free(pa_object *o) {
88 file_stream *u = FILE_STREAM(o);
92 pa_memblockq_free(u->memblockq);
100 /* Called from main context */
101 static int file_stream_process_msg(pa_msgobject *o, int code, void*userdata, int64_t offset, pa_memchunk *chunk) {
102 file_stream *u = FILE_STREAM(o);
103 file_stream_assert_ref(u);
106 case FILE_STREAM_MESSAGE_UNLINK:
107 file_stream_unlink(u);
114 /* Called from main context */
115 static void sink_input_kill_cb(pa_sink_input *i) {
118 pa_sink_input_assert_ref(i);
119 u = FILE_STREAM(i->userdata);
120 file_stream_assert_ref(u);
122 file_stream_unlink(u);
125 /* Called from IO thread context */
126 static void sink_input_state_change_cb(pa_sink_input *i, pa_sink_input_state_t state) {
129 pa_sink_input_assert_ref(i);
130 u = FILE_STREAM(i->userdata);
131 file_stream_assert_ref(u);
133 /* If we are added for the first time, ask for a rewinding so that
134 * we are heard right-away. */
135 if (PA_SINK_INPUT_IS_LINKED(state) &&
136 i->thread_info.state == PA_SINK_INPUT_INIT)
137 pa_sink_input_request_rewind(i, 0, FALSE, TRUE, TRUE);
140 /* Called from IO thread context */
141 static int sink_input_pop_cb(pa_sink_input *i, size_t length, pa_memchunk *chunk) {
144 pa_sink_input_assert_ref(i);
146 u = FILE_STREAM(i->userdata);
147 file_stream_assert_ref(u);
158 if (pa_memblockq_peek(u->memblockq, chunk) >= 0) {
159 chunk->length = PA_MIN(chunk->length, length);
160 pa_memblockq_drop(u->memblockq, chunk->length);
167 tchunk.memblock = pa_memblock_new(i->sink->core->mempool, length);
170 p = pa_memblock_acquire(tchunk.memblock);
172 if (u->readf_function) {
173 fs = pa_frame_size(&i->sample_spec);
174 n = u->readf_function(u->sndfile, p, (sf_count_t) (length/fs));
177 n = sf_read_raw(u->sndfile, p, (sf_count_t) length);
180 pa_memblock_release(tchunk.memblock);
183 pa_memblock_unref(tchunk.memblock);
185 sf_close(u->sndfile);
190 tchunk.length = (size_t) n * fs;
192 pa_memblockq_push(u->memblockq, &tchunk);
193 pa_memblock_unref(tchunk.memblock);
196 if (pa_sink_input_safe_to_remove(i)) {
197 pa_memblockq_free(u->memblockq);
200 pa_asyncmsgq_post(pa_thread_mq_get()->outq, PA_MSGOBJECT(u), FILE_STREAM_MESSAGE_UNLINK, NULL, 0, NULL, NULL);
206 static void sink_input_process_rewind_cb(pa_sink_input *i, size_t nbytes) {
209 pa_sink_input_assert_ref(i);
210 u = FILE_STREAM(i->userdata);
211 file_stream_assert_ref(u);
216 pa_memblockq_rewind(u->memblockq, nbytes);
219 static void sink_input_update_max_rewind_cb(pa_sink_input *i, size_t nbytes) {
222 pa_sink_input_assert_ref(i);
223 u = FILE_STREAM(i->userdata);
224 file_stream_assert_ref(u);
229 pa_memblockq_set_maxrewind(u->memblockq, nbytes);
235 const pa_cvolume *volume) {
237 file_stream *u = NULL;
240 pa_sink_input_new_data data;
247 u = pa_msgobject_new(file_stream);
248 u->parent.parent.free = file_stream_free;
249 u->parent.process_msg = file_stream_process_msg;
250 u->core = sink->core;
251 u->sink_input = NULL;
253 u->readf_function = NULL;
256 if ((fd = open(fname, O_RDONLY
261 pa_log("Failed to open file %s: %s", fname, pa_cstrerror(errno));
265 /* FIXME: For now we just use posix_fadvise to avoid page faults
266 * when accessing the file data. Eventually we should move the
267 * file reader into the main event loop and pass the data over the
270 #ifdef HAVE_POSIX_FADVISE
271 if (posix_fadvise(fd, 0, 0, POSIX_FADV_SEQUENTIAL) < 0) {
272 pa_log_warn("POSIX_FADV_SEQUENTIAL failed: %s", pa_cstrerror(errno));
275 pa_log_debug("POSIX_FADV_SEQUENTIAL succeeded.");
277 if (posix_fadvise(fd, 0, 0, POSIX_FADV_WILLNEED) < 0) {
278 pa_log_warn("POSIX_FADV_WILLNEED failed: %s", pa_cstrerror(errno));
281 pa_log_debug("POSIX_FADV_WILLNEED succeeded.");
285 if (!(u->sndfile = sf_open_fd(fd, SFM_READ, &sfi, 1))) {
286 pa_log("Failed to open file %s", fname);
292 if (pa_sndfile_read_sample_spec(u->sndfile, &ss) < 0) {
293 pa_log("Failed to determine file sample format.");
297 if (pa_sndfile_read_channel_map(u->sndfile, &cm) < 0) {
299 pa_log_info("Failed to determine file channel map, synthesizing one.");
300 pa_channel_map_init_extend(&cm, ss.channels, PA_CHANNEL_MAP_DEFAULT);
303 u->readf_function = pa_sndfile_readf_function(&ss);
305 pa_sink_input_new_data_init(&data);
307 data.driver = __FILE__;
308 pa_sink_input_new_data_set_sample_spec(&data, &ss);
309 pa_sink_input_new_data_set_channel_map(&data, &cm);
310 pa_sink_input_new_data_set_volume(&data, volume);
311 pa_proplist_sets(data.proplist, PA_PROP_MEDIA_NAME, pa_path_get_filename(fname));
312 pa_proplist_sets(data.proplist, PA_PROP_MEDIA_FILENAME, fname);
313 pa_sndfile_init_proplist(u->sndfile, data.proplist);
315 pa_sink_input_new(&u->sink_input, sink->core, &data, 0);
316 pa_sink_input_new_data_done(&data);
321 u->sink_input->pop = sink_input_pop_cb;
322 u->sink_input->process_rewind = sink_input_process_rewind_cb;
323 u->sink_input->update_max_rewind = sink_input_update_max_rewind_cb;
324 u->sink_input->kill = sink_input_kill_cb;
325 u->sink_input->state_change = sink_input_state_change_cb;
326 u->sink_input->userdata = u;
328 u->memblockq = pa_memblockq_new(0, MEMBLOCKQ_MAXLENGTH, 0, pa_frame_size(&ss), 1, 1, 0, NULL);
330 pa_sink_input_put(u->sink_input);
332 /* The reference to u is dangling here, because we want to keep
333 * this stream around until it is fully played. */
339 file_stream_unref(u);