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/*
* Copyright (C) 2003-2013 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.
*/
/* necessary because libavutil/common.h uses UINT64_C */
#define __STDC_CONSTANT_MACROS
#include "config.h"
#include "FfmpegInputPlugin.hxx"
#include "input_internal.h"
#include "input_plugin.h"
extern "C" {
#include <libavutil/avutil.h>
#include <libavformat/avio.h>
#include <libavformat/avformat.h>
}
#undef G_LOG_DOMAIN
#define G_LOG_DOMAIN "input_ffmpeg"
struct input_ffmpeg {
struct input_stream base;
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
AVIOContext *h;
#else
URLContext *h;
#endif
bool eof;
};
static inline GQuark
ffmpeg_quark(void)
{
return g_quark_from_static_string("ffmpeg");
}
static inline bool
input_ffmpeg_supported(void)
{
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
void *opaque = nullptr;
return avio_enum_protocols(&opaque, 0) != nullptr;
#else
return av_protocol_next(nullptr) != nullptr;
#endif
}
static bool
input_ffmpeg_init(G_GNUC_UNUSED const struct config_param *param,
G_GNUC_UNUSED GError **error_r)
{
av_register_all();
/* disable this plugin if there's no registered protocol */
if (!input_ffmpeg_supported()) {
g_set_error(error_r, ffmpeg_quark(), 0,
"No protocol");
return false;
}
return true;
}
static struct input_stream *
input_ffmpeg_open(const char *uri,
GMutex *mutex, GCond *cond,
GError **error_r)
{
struct input_ffmpeg *i;
if (!g_str_has_prefix(uri, "gopher://") &&
!g_str_has_prefix(uri, "rtp://") &&
!g_str_has_prefix(uri, "rtsp://") &&
!g_str_has_prefix(uri, "rtmp://") &&
!g_str_has_prefix(uri, "rtmpt://") &&
!g_str_has_prefix(uri, "rtmps://"))
return nullptr;
i = g_new(struct input_ffmpeg, 1);
input_stream_init(&i->base, &input_plugin_ffmpeg, uri,
mutex, cond);
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,1,0)
int ret = avio_open(&i->h, uri, AVIO_FLAG_READ);
#elif LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
int ret = avio_open(&i->h, uri, AVIO_RDONLY);
#else
int ret = url_open(&i->h, uri, URL_RDONLY);
#endif
if (ret != 0) {
g_free(i);
g_set_error(error_r, ffmpeg_quark(), ret,
"libavformat failed to open the URI");
return nullptr;
}
i->eof = false;
i->base.ready = true;
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
i->base.seekable = (i->h->seekable & AVIO_SEEKABLE_NORMAL) != 0;
i->base.size = avio_size(i->h);
#else
i->base.seekable = !i->h->is_streamed;
i->base.size = url_filesize(i->h);
#endif
/* hack to make MPD select the "ffmpeg" decoder plugin - since
avio.h doesn't tell us the MIME type of the resource, we
can't select a decoder plugin, but the "ffmpeg" plugin is
quite good at auto-detection */
i->base.mime = g_strdup("audio/x-mpd-ffmpeg");
return &i->base;
}
static size_t
input_ffmpeg_read(struct input_stream *is, void *ptr, size_t size,
GError **error_r)
{
struct input_ffmpeg *i = (struct input_ffmpeg *)is;
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
int ret = avio_read(i->h, (unsigned char *)ptr, size);
#else
int ret = url_read(i->h, (unsigned char *)ptr, size);
#endif
if (ret <= 0) {
if (ret < 0)
g_set_error(error_r, ffmpeg_quark(), 0,
"url_read() failed");
i->eof = true;
return false;
}
is->offset += ret;
return (size_t)ret;
}
static void
input_ffmpeg_close(struct input_stream *is)
{
struct input_ffmpeg *i = (struct input_ffmpeg *)is;
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
avio_close(i->h);
#else
url_close(i->h);
#endif
input_stream_deinit(&i->base);
g_free(i);
}
static bool
input_ffmpeg_eof(struct input_stream *is)
{
struct input_ffmpeg *i = (struct input_ffmpeg *)is;
return i->eof;
}
static bool
input_ffmpeg_seek(struct input_stream *is, goffset offset, int whence,
G_GNUC_UNUSED GError **error_r)
{
struct input_ffmpeg *i = (struct input_ffmpeg *)is;
#if LIBAVFORMAT_VERSION_INT >= AV_VERSION_INT(53,0,0)
int64_t ret = avio_seek(i->h, offset, whence);
#else
int64_t ret = url_seek(i->h, offset, whence);
#endif
if (ret >= 0) {
i->eof = false;
return true;
} else {
g_set_error(error_r, ffmpeg_quark(), 0, "url_seek() failed");
return false;
}
}
const struct input_plugin input_plugin_ffmpeg = {
"ffmpeg",
input_ffmpeg_init,
nullptr,
input_ffmpeg_open,
input_ffmpeg_close,
nullptr,
nullptr,
nullptr,
nullptr,
input_ffmpeg_read,
input_ffmpeg_eof,
input_ffmpeg_seek,
};
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