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/*
* This file is part of MPlayer.
*
* MPlayer 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.
*
* MPlayer 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 MPlayer; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#include "config.h"
#include "libavformat/avformat.h"
#include "libavformat/avio.h"
#include "core/mp_msg.h"
#include "stream.h"
#include "core/m_option.h"
#include "core/m_struct.h"
#include "demux/demux.h"
static int fill_buffer(stream_t *s, char *buffer, int max_len)
{
AVIOContext *avio = s->priv;
int r = avio_read(avio, buffer, max_len);
return (r <= 0) ? -1 : r;
}
static int write_buffer(stream_t *s, char *buffer, int len)
{
AVIOContext *avio = s->priv;
avio_write(avio, buffer, len);
avio_flush(avio);
if (avio->error)
return -1;
return len;
}
static int seek(stream_t *s, int64_t newpos)
{
AVIOContext *avio = s->priv;
s->pos = newpos;
if (avio_seek(avio, s->pos, SEEK_SET) < 0) {
s->eof = 1;
return 0;
}
return 1;
}
static int control(stream_t *s, int cmd, void *arg)
{
AVIOContext *avio = s->priv;
int64_t size, ts;
double pts;
switch(cmd) {
case STREAM_CTRL_GET_SIZE:
size = avio_size(avio);
if(size >= 0) {
*(uint64_t *)arg = size;
return 1;
}
break;
case STREAM_CTRL_SEEK_TO_TIME:
pts = *(double *)arg;
ts = pts * AV_TIME_BASE;
ts = avio_seek_time(avio, -1, ts, 0);
if (ts >= 0)
return 1;
break;
}
return STREAM_UNSUPPORTED;
}
static void close_f(stream_t *stream)
{
AVIOContext *avio = stream->priv;
/* NOTE: As of 2011 write streams must be manually flushed before close.
* Currently write_buffer() always flushes them after writing.
* avio_close() could return an error, but we have no way to return that
* with the current stream API.
*/
avio_close(avio);
}
static const char * const prefix[] = { "lavf://", "ffmpeg://" };
static int open_f(stream_t *stream, int mode, void *opts, int *file_format)
{
int flags = 0;
const char *filename;
AVIOContext *avio = NULL;
int res = STREAM_ERROR;
if (mode == STREAM_READ)
flags = AVIO_FLAG_READ;
else if (mode == STREAM_WRITE)
flags = AVIO_FLAG_WRITE;
else {
mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] Unknown open mode %d\n", mode);
res = STREAM_UNSUPPORTED;
goto out;
}
if (stream->url)
filename = stream->url;
else {
mp_msg(MSGT_OPEN, MSGL_ERR, "[ffmpeg] No URL\n");
goto out;
}
for (int i = 0; i < sizeof(prefix) / sizeof(prefix[0]); i++)
if (!strncmp(filename, prefix[i], strlen(prefix[i])))
filename += strlen(prefix[i]);
if (!strncmp(filename, "rtsp:", 5)) {
/* This is handled as a special demuxer, without a separate
* stream layer. demux_lavf will do all the real work.
*/
stream->type = STREAMTYPE_STREAM;
stream->seek = NULL;
*file_format = DEMUXER_TYPE_LAVF;
stream->lavf_type = "rtsp";
return STREAM_OK;
}
mp_msg(MSGT_OPEN, MSGL_V, "[ffmpeg] Opening %s\n", filename);
if (avio_open(&avio, filename, flags) < 0)
goto out;
char *rtmp[] = {"rtmp:", "rtmpt:", "rtmpe:", "rtmpte:", "rtmps:"};
for (int i = 0; i < FF_ARRAY_ELEMS(rtmp); i++)
if (!strncmp(filename, rtmp[i], strlen(rtmp[i]))) {
*file_format = DEMUXER_TYPE_LAVF;
stream->lavf_type = "flv";
}
stream->priv = avio;
int64_t size = avio_size(avio);
if (size >= 0)
stream->end_pos = size;
stream->type = STREAMTYPE_FILE;
stream->seek = seek;
if (!avio->seekable) {
stream->type = STREAMTYPE_STREAM;
stream->seek = NULL;
}
stream->fill_buffer = fill_buffer;
stream->write_buffer = write_buffer;
stream->control = control;
stream->close = close_f;
res = STREAM_OK;
out:
return res;
}
const stream_info_t stream_info_ffmpeg = {
"FFmpeg",
"ffmpeg",
"",
"",
open_f,
{ "lavf", "ffmpeg", "rtmp", "rtsp", NULL },
NULL,
1 // Urls are an option string
};
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