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renamed decoder plugin sources

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Make it X_decoder_plugin.c.
This commit is contained in:
Max Kellermann
2010-01-04 21:36:33 +01:00
parent c69cc31de0
commit 9b9abff972
16 changed files with 15 additions and 15 deletions
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434
src/decoder/vorbis_decoder_plugin.c Normal file
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/*
* Copyright (C) 2003-2010 The Music Player Daemon Project
* http://www.musicpd.org
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "_ogg_common.h"
#include "audio_check.h"
#include "uri.h"
#ifndef HAVE_TREMOR
#define OV_EXCLUDE_STATIC_CALLBACKS
#include <vorbis/vorbisfile.h>
#else
#include <tremor/ivorbisfile.h>
/* Macros to make Tremor's API look like libogg. Tremor always
returns host-byte-order 16-bit signed data, and uses integer
milliseconds where libogg uses double seconds.
*/
#define ov_read(VF, BUFFER, LENGTH, BIGENDIANP, WORD, SGNED, BITSTREAM) \
ov_read(VF, BUFFER, LENGTH, BITSTREAM)
#define ov_time_total(VF, I) ((double)ov_time_total(VF, I)/1000)
#define ov_time_tell(VF) ((double)ov_time_tell(VF)/1000)
#define ov_time_seek_page(VF, S) (ov_time_seek_page(VF, (S)*1000))
#endif /* HAVE_TREMOR */
#include <glib.h>
#include <assert.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "vorbis"
#define OGG_CHUNK_SIZE 4096
#if G_BYTE_ORDER == G_BIG_ENDIAN
#define OGG_DECODE_USE_BIGENDIAN 1
#else
#define OGG_DECODE_USE_BIGENDIAN 0
#endif
struct vorbis_decoder_data {
struct decoder *decoder;
struct input_stream *input_stream;
bool seekable;
};
static size_t ogg_read_cb(void *ptr, size_t size, size_t nmemb, void *vdata)
{
struct vorbis_decoder_data *data = (struct vorbis_decoder_data *)vdata;
size_t ret;
ret = decoder_read(data->decoder, data->input_stream, ptr, size * nmemb);
errno = 0;
return ret / size;
}
static int ogg_seek_cb(void *vdata, ogg_int64_t offset, int whence)
{
struct vorbis_decoder_data *data = (struct vorbis_decoder_data *)vdata;
return data->seekable &&
decoder_get_command(data->decoder) != DECODE_COMMAND_STOP &&
input_stream_seek(data->input_stream, offset, whence, NULL)
? 0 : -1;
}
/* TODO: check Ogg libraries API and see if we can just not have this func */
static int ogg_close_cb(G_GNUC_UNUSED void *vdata)
{
return 0;
}
static long ogg_tell_cb(void *vdata)
{
const struct vorbis_decoder_data *data =
(const struct vorbis_decoder_data *)vdata;
return (long)data->input_stream->offset;
}
static const char *
vorbis_strerror(int code)
{
switch (code) {
case OV_EREAD:
return "read error";
case OV_ENOTVORBIS:
return "not vorbis stream";
case OV_EVERSION:
return "vorbis version mismatch";
case OV_EBADHEADER:
return "invalid vorbis header";
case OV_EFAULT:
return "internal logic error";
default:
return "unknown error";
}
}
static const char *
vorbis_comment_value(const char *comment, const char *needle)
{
size_t len = strlen(needle);
if (g_ascii_strncasecmp(comment, needle, len) == 0 &&
comment[len] == '=')
return comment + len + 1;
return NULL;
}
static struct replay_gain_info *
vorbis_comments_to_replay_gain(char **comments)
{
struct replay_gain_info *rgi;
const char *temp;
bool found = false;
rgi = replay_gain_info_new();
while (*comments) {
if ((temp =
vorbis_comment_value(*comments, "replaygain_track_gain"))) {
rgi->tuples[REPLAY_GAIN_TRACK].gain = atof(temp);
found = true;
} else if ((temp = vorbis_comment_value(*comments,
"replaygain_album_gain"))) {
rgi->tuples[REPLAY_GAIN_ALBUM].gain = atof(temp);
found = true;
} else if ((temp = vorbis_comment_value(*comments,
"replaygain_track_peak"))) {
rgi->tuples[REPLAY_GAIN_TRACK].peak = atof(temp);
found = true;
} else if ((temp = vorbis_comment_value(*comments,
"replaygain_album_peak"))) {
rgi->tuples[REPLAY_GAIN_ALBUM].peak = atof(temp);
found = true;
}
comments++;
}
if (!found) {
replay_gain_info_free(rgi);
rgi = NULL;
}
return rgi;
}
static const char *VORBIS_COMMENT_TRACK_KEY = "tracknumber";
static const char *VORBIS_COMMENT_DISC_KEY = "discnumber";
/**
* Check if the comment's name equals the passed name, and if so, copy
* the comment value into the tag.
*/
static bool
vorbis_copy_comment(struct tag *tag, const char *comment,
const char *name, enum tag_type tag_type)
{
const char *value;
value = vorbis_comment_value(comment, name);
if (value != NULL) {
tag_add_item(tag, tag_type, value);
return true;
}
return false;
}
static void
vorbis_parse_comment(struct tag *tag, const char *comment)
{
assert(tag != NULL);
if (vorbis_copy_comment(tag, comment, VORBIS_COMMENT_TRACK_KEY,
TAG_TRACK) ||
vorbis_copy_comment(tag, comment, VORBIS_COMMENT_DISC_KEY,
TAG_DISC) ||
vorbis_copy_comment(tag, comment, "album artist",
TAG_ALBUM_ARTIST))
return;
for (unsigned i = 0; i < TAG_NUM_OF_ITEM_TYPES; ++i)
if (vorbis_copy_comment(tag, comment,
tag_item_names[i], i))
return;
}
static struct tag *
vorbis_comments_to_tag(char **comments)
{
struct tag *tag = tag_new();
while (*comments)
vorbis_parse_comment(tag, *comments++);
if (tag_is_empty(tag)) {
tag_free(tag);
tag = NULL;
}
return tag;
}
static void
vorbis_send_comments(struct decoder *decoder, struct input_stream *is,
char **comments)
{
struct tag *tag;
tag = vorbis_comments_to_tag(comments);
if (!tag)
return;
decoder_tag(decoder, is, tag);
tag_free(tag);
}
static bool
oggvorbis_seekable(struct decoder *decoder)
{
char *uri;
bool seekable;
uri = decoder_get_uri(decoder);
/* disable seeking on remote streams, because libvorbis seeks
around like crazy, and due to being very expensive, this
delays song playback by 10 or 20 seconds */
seekable = !uri_has_scheme(uri);
g_free(uri);
return seekable;
}
/* public */
static void
vorbis_stream_decode(struct decoder *decoder,
struct input_stream *input_stream)
{
GError *error = NULL;
OggVorbis_File vf;
ov_callbacks callbacks;
struct vorbis_decoder_data data;
struct audio_format audio_format;
float total_time;
int current_section;
int prev_section = -1;
long ret;
char chunk[OGG_CHUNK_SIZE];
long bitRate = 0;
long test;
const vorbis_info *vi;
enum decoder_command cmd = DECODE_COMMAND_NONE;
if (ogg_stream_type_detect(input_stream) != VORBIS)
return;
/* rewind the stream, because ogg_stream_type_detect() has
moved it */
input_stream_seek(input_stream, 0, SEEK_SET, NULL);
data.decoder = decoder;
data.input_stream = input_stream;
data.seekable = input_stream->seekable && oggvorbis_seekable(decoder);
callbacks.read_func = ogg_read_cb;
callbacks.seek_func = ogg_seek_cb;
callbacks.close_func = ogg_close_cb;
callbacks.tell_func = ogg_tell_cb;
if ((ret = ov_open_callbacks(&data, &vf, NULL, 0, callbacks)) < 0) {
if (decoder_get_command(decoder) != DECODE_COMMAND_NONE)
return;
g_warning("Error decoding Ogg Vorbis stream: %s",
vorbis_strerror(ret));
return;
}
vi = ov_info(&vf, -1);
if (vi == NULL) {
g_warning("ov_info() has failed");
return;
}
if (!audio_format_init_checked(&audio_format, vi->rate,
SAMPLE_FORMAT_S16,
vi->channels, &error)) {
g_warning("%s", error->message);
g_error_free(error);
return;
}
total_time = ov_time_total(&vf, -1);
if (total_time < 0)
total_time = 0;
decoder_initialized(decoder, &audio_format, data.seekable, total_time);
do {
if (cmd == DECODE_COMMAND_SEEK) {
double seek_where = decoder_seek_where(decoder);
if (0 == ov_time_seek_page(&vf, seek_where)) {
decoder_command_finished(decoder);
} else
decoder_seek_error(decoder);
}
ret = ov_read(&vf, chunk, sizeof(chunk),
OGG_DECODE_USE_BIGENDIAN, 2, 1, &current_section);
if (ret == OV_HOLE) /* bad packet */
ret = 0;
else if (ret <= 0)
/* break on EOF or other error */
break;
if (current_section != prev_section) {
char **comments;
struct replay_gain_info *new_rgi;
vi = ov_info(&vf, -1);
if (vi == NULL) {
g_warning("ov_info() has failed");
break;
}
if (vi->rate != (long)audio_format.sample_rate ||
vi->channels != (int)audio_format.channels) {
/* we don't support audio format
change yet */
g_warning("audio format change, stopping here");
break;
}
comments = ov_comment(&vf, -1)->user_comments;
vorbis_send_comments(decoder, input_stream, comments);
new_rgi = vorbis_comments_to_replay_gain(comments);
if (new_rgi != NULL) {
decoder_replay_gain(decoder, new_rgi);
replay_gain_info_free(new_rgi);
}
prev_section = current_section;
}
if ((test = ov_bitrate_instant(&vf)) > 0)
bitRate = test / 1000;
cmd = decoder_data(decoder, input_stream,
chunk, ret,
bitRate);
} while (cmd != DECODE_COMMAND_STOP);
ov_clear(&vf);
}
static struct tag *
vorbis_tag_dup(const char *file)
{
struct tag *ret;
FILE *fp;
OggVorbis_File vf;
fp = fopen(file, "rb");
if (!fp) {
return NULL;
}
if (ov_open(fp, &vf, NULL, 0) < 0) {
fclose(fp);
return NULL;
}
ret = vorbis_comments_to_tag(ov_comment(&vf, -1)->user_comments);
if (!ret)
ret = tag_new();
ret->time = (int)(ov_time_total(&vf, -1) + 0.5);
ov_clear(&vf);
return ret;
}
static const char *const vorbis_suffixes[] = {
"ogg", "oga", NULL
};
static const char *const vorbis_mime_types[] = {
"application/ogg",
"application/x-ogg",
"audio/ogg",
"audio/vorbis",
"audio/vorbis+ogg",
"audio/x-ogg",
"audio/x-vorbis",
"audio/x-vorbis+ogg",
NULL
};
const struct decoder_plugin vorbis_decoder_plugin = {
.name = "vorbis",
.stream_decode = vorbis_stream_decode,
.tag_dup = vorbis_tag_dup,
.suffixes = vorbis_suffixes,
.mime_types = vorbis_mime_types
};