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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio 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.
polypaudio 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 polypaudio; 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 <polypcore/sink-input.h>
#include <polypcore/xmalloc.h>
#include <polypcore/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 void si_kill(PA_GCC_UNUSED pa_mainloop_api *m, void *i) {
sink_input_kill(i);
}
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 samples = BUF_SIZE/fs;
u->memchunk.memblock = pa_memblock_new(BUF_SIZE, i->sink->core->memblock_stat);
u->memchunk.index = 0;
samples = u->readf_function(u->sndfile, u->memchunk.memblock->data, samples);
u->memchunk.length = samples*fs;
if (!u->memchunk.length) {
pa_memblock_unref(u->memchunk.memblock);
u->memchunk.memblock = NULL;
u->memchunk.index = u->memchunk.length = 0;
pa_mainloop_api_once(i->sink->core->mainloop, si_kill, i);
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;
}
switch (sfinfo.format & 0xFF) {
case SF_FORMAT_PCM_16:
case SF_FORMAT_PCM_U8:
case SF_FORMAT_ULAW:
case SF_FORMAT_ALAW:
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_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;
}
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