RepoMirrors/mpv
1
0
Fork 0
mirror of https://github.com/mpv-player/mpv synced 2024-12-22 06:42:03 +00:00
Code Issues Releases Wiki Activity
879ebe0655
mpv/stream/stream.c
wm4 8a7b8c3dd6 stream: fix reconnecting on broken network connections 
This didn't work properly for HTTP with libavformat. The builtin HTTP
implementation reconnects automatically on its own, while libavformat
doesn't. Fix this by adding explicit reconnection support to
stream_lavf.c, which simply destroys and recreates the AVIO context.

It mostly works, though sometimes it mysteriously fails, spamming crap
all over the terminal and feeding broken data to the decoders. This is
probably due to itneractions with the cache. Also, reconnecting to
unseekable HTTP streams will make it read the entire stream until the
previous playback position is reached again.

It's not known whether this change makes behavior with "strange"
protocols like RTP better or worse.
2013-01-24 18:56:02 +01:00

787 lines
22 KiB
C
Raw Blame History

/*
* 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 <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#ifndef __MINGW32__
#include <sys/ioctl.h>
#include <sys/wait.h>
#endif
#include <fcntl.h>
#include <strings.h>
#include <assert.h>
#include <libavutil/intreadwrite.h>
#include <libavutil/common.h>
#include "talloc.h"
#include "config.h"
#if HAVE_WINSOCK2_H
#include <winsock2.h>
#endif
#include "core/mp_msg.h"
#include "osdep/shmem.h"
#include "osdep/timer.h"
#include "network.h"
#include "stream.h"
#include "demux/demux.h"
#include "core/m_option.h"
#include "core/m_struct.h"
#include "cache2.h"
/// We keep these 2 for the gui atm, but they will be removed.
int vcd_track = 0;
char *cdrom_device = NULL;
char *dvd_device = NULL;
int dvd_title = 0;
struct input_ctx;
static int (*stream_check_interrupt_cb)(struct input_ctx *ctx, int time);
static struct input_ctx *stream_check_interrupt_ctx;
extern const stream_info_t stream_info_vcd;
extern const stream_info_t stream_info_cdda;
extern const stream_info_t stream_info_asf;
extern const stream_info_t stream_info_udp;
extern const stream_info_t stream_info_http1;
extern const stream_info_t stream_info_http2;
extern const stream_info_t stream_info_dvb;
extern const stream_info_t stream_info_tv;
extern const stream_info_t stream_info_radio;
extern const stream_info_t stream_info_pvr;
extern const stream_info_t stream_info_ftp;
extern const stream_info_t stream_info_vstream;
extern const stream_info_t stream_info_smb;
extern const stream_info_t stream_info_null;
extern const stream_info_t stream_info_mf;
extern const stream_info_t stream_info_ffmpeg;
extern const stream_info_t stream_info_avdevice;
extern const stream_info_t stream_info_file;
extern const stream_info_t stream_info_ifo;
extern const stream_info_t stream_info_dvd;
extern const stream_info_t stream_info_bluray;
static const stream_info_t *const auto_open_streams[] = {
#ifdef CONFIG_VCD
&stream_info_vcd,
#endif
#ifdef CONFIG_CDDA
&stream_info_cdda,
#endif
&stream_info_ffmpeg, // use for rstp:// before http fallback
&stream_info_avdevice,
#ifdef CONFIG_NETWORKING
&stream_info_http1,
&stream_info_asf,
&stream_info_udp,
&stream_info_http2,
#endif
#ifdef CONFIG_DVBIN
&stream_info_dvb,
#endif
#ifdef CONFIG_TV
&stream_info_tv,
#endif
#ifdef CONFIG_RADIO
&stream_info_radio,
#endif
#ifdef CONFIG_PVR
&stream_info_pvr,
#endif
#ifdef CONFIG_FTP
&stream_info_ftp,
#endif
#ifdef CONFIG_VSTREAM
&stream_info_vstream,
#endif
#ifdef CONFIG_LIBSMBCLIENT
&stream_info_smb,
#endif
#ifdef CONFIG_DVDREAD
&stream_info_ifo,
&stream_info_dvd,
#endif
#ifdef CONFIG_LIBBLURAY
&stream_info_bluray,
#endif
&stream_info_null,
&stream_info_mf,
&stream_info_file,
NULL
};
static stream_t *open_stream_plugin(const stream_info_t *sinfo,
const char *filename,
int mode, struct MPOpts *options,
int *file_format, int *ret,
char **redirected_url)
{
void *arg = NULL;
stream_t *s;
m_struct_t *desc = (m_struct_t *)sinfo->opts;
// Parse options
if (desc) {
arg = m_struct_alloc(desc);
if (sinfo->opts_url) {
m_option_t url_opt = { "stream url", arg, CONF_TYPE_CUSTOM_URL, 0,
0, 0, (void *)sinfo->opts };
if (m_option_parse(&url_opt, bstr0("stream url"), bstr0(filename),
arg) < 0)
{
mp_tmsg(MSGT_OPEN, MSGL_ERR, "URL parsing failed on url %s\n",
filename);
m_struct_free(desc, arg);
*ret = STREAM_ERROR;
return NULL;
}
}
}
s = new_stream(-2, -2);
s->opts = options;
s->url = strdup(filename);
s->flags |= mode;
*ret = sinfo->open(s, mode, arg, file_format);
if ((*ret) != STREAM_OK) {
#ifdef CONFIG_NETWORKING
if (*ret == STREAM_REDIRECTED && redirected_url) {
if (s->streaming_ctrl && s->streaming_ctrl->url
&& s->streaming_ctrl->url->url)
*redirected_url = strdup(s->streaming_ctrl->url->url);
else
*redirected_url = NULL;
}
streaming_ctrl_free(s->streaming_ctrl);
#endif
free(s->url);
talloc_free(s);
return NULL;
}
if (s->streaming && !s->cache_size) {
// Set default cache size to use if user does not specify it.
s->cache_size = 320;
}
if (s->type <= -2)
mp_msg(MSGT_OPEN, MSGL_WARN, "Warning streams need a type !!!!\n");
if (s->flags & MP_STREAM_SEEK && !s->seek)
s->flags &= ~MP_STREAM_SEEK;
if (s->seek && !(s->flags & MP_STREAM_SEEK))
s->flags |= MP_STREAM_SEEK;
s->mode = mode;
mp_msg(MSGT_OPEN, MSGL_V, "STREAM: [%s] %s\n", sinfo->name, filename);
mp_msg(MSGT_OPEN, MSGL_V, "STREAM: Description: %s\n", sinfo->info);
mp_msg(MSGT_OPEN, MSGL_V, "STREAM: Author: %s\n", sinfo->author);
mp_msg(MSGT_OPEN, MSGL_V, "STREAM: Comment: %s\n", sinfo->comment);
if (s->mime_type)
mp_msg(MSGT_OPEN, MSGL_V, "Mime-type: '%s'\n", s->mime_type);
return s;
}
static stream_t *open_stream_full(const char *filename, int mode,
struct MPOpts *options, int *file_format)
{
int i, j, l, r;
const stream_info_t *sinfo;
stream_t *s;
char *redirected_url = NULL;
assert(filename);
int dummy;
if (!file_format)
file_format = &dummy;
*file_format = DEMUXER_TYPE_UNKNOWN;
for (i = 0; auto_open_streams[i]; i++) {
sinfo = auto_open_streams[i];
if (!sinfo->protocols) {
mp_msg(MSGT_OPEN, MSGL_WARN,
"Stream type %s has protocols == NULL, it's a bug\n",
sinfo->name);
continue;
}
for (j = 0; sinfo->protocols[j]; j++) {
l = strlen(sinfo->protocols[j]);
// l == 0 => Don't do protocol matching (ie network and filenames)
if ((l == 0 && !strstr(filename, "://")) ||
((strncasecmp(sinfo->protocols[j], filename, l) == 0) &&
(strncmp("://", filename + l, 3) == 0))) {
*file_format = DEMUXER_TYPE_UNKNOWN;
s =
open_stream_plugin(sinfo, filename, mode, options,
file_format,
&r,
&redirected_url);
if (s)
return s;
if (r == STREAM_REDIRECTED && redirected_url) {
mp_msg(MSGT_OPEN, MSGL_V, "[%s] open %s redirected to %s\n",
sinfo->info, filename, redirected_url);
s = open_stream_full(redirected_url, mode, options,
file_format);
free(redirected_url);
return s;
} else if (r != STREAM_UNSUPPORTED) {
mp_tmsg(MSGT_OPEN, MSGL_ERR, "Failed to open %s.\n",
filename);
return NULL;
}
break;
}
}
}
mp_tmsg(MSGT_OPEN, MSGL_ERR, "No stream found to handle url %s\n", filename);
return NULL;
}
stream_t *open_stream(const char *filename, struct MPOpts *options,
int *file_format)
{
return open_stream_full(filename, STREAM_READ, options, file_format);
}
stream_t *open_output_stream(const char *filename, struct MPOpts *options)
{
return open_stream_full(filename, STREAM_WRITE, options, NULL);
}
//=================== STREAMER =========================
static int stream_reconnect(stream_t *s)
{
#define MAX_RECONNECT_RETRIES 5
#define RECONNECT_SLEEP_MS 1000
if (!s->streaming)
return 0;
int64_t pos = s->pos;
for (int retry = 0; retry < MAX_RECONNECT_RETRIES; retry++) {
mp_msg(MSGT_STREAM, MSGL_WARN,
"Connection lost! Attempting to reconnect...\n");
if (retry)
usec_sleep(RECONNECT_SLEEP_MS * 1000);
s->eof = 1;
stream_reset(s);
// Some streams (internal http.c) don't support STREAM_CTRL_RECONNECT,
// but do it when trying to seek.
if (s->control) {
if (s->control(s, STREAM_CTRL_RECONNECT, NULL) == STREAM_ERROR)
continue;
}
if (stream_seek_internal(s, pos) < 0 && s->pos == pos)
return 1;
}
return 0;
}
int stream_read_internal(stream_t *s, void *buf, int len)
{
int orig_len = len;
// we will retry even if we already reached EOF previously.
switch (s->type) {
case STREAMTYPE_STREAM:
if (s->streaming_ctrl != NULL && s->streaming_ctrl->streaming_read) {
len = s->streaming_ctrl->streaming_read(s->fd, buf, len,
s->streaming_ctrl);
if (s->streaming_ctrl->status == streaming_stopped_e &&
(!s->end_pos || s->pos == s->end_pos))
s->eof = 1;
} else {
if (s->fill_buffer)
len = s->fill_buffer(s, buf, len);
else
len = read(s->fd, buf, len);
}
break;
case STREAMTYPE_DS:
len = demux_read_data((demux_stream_t *)s->priv, buf, len);
break;
default:
len = s->fill_buffer ? s->fill_buffer(s, buf, len) : 0;
}
if (len <= 0) {
// do not retry if this looks like proper eof
if (s->eof || (s->end_pos && s->pos == s->end_pos))
goto eof_out;
// just in case this is an error e.g. due to network
// timeout reset and retry
if (!stream_reconnect(s))
goto eof_out;
// make sure EOF is set to ensure no endless loops
s->eof = 1;
return stream_read_internal(s, buf, orig_len);
eof_out:
s->eof = 1;
return 0;
}
// When reading succeeded we are obviously not at eof.
// This e.g. avoids issues with eof getting stuck when lavf seeks in MPEG-TS
s->eof = 0;
s->pos += len;
return len;
}
int stream_fill_buffer(stream_t *s)
{
int len = stream_read_internal(s, s->buffer, STREAM_BUFFER_SIZE);
if (len <= 0)
return 0;
s->buf_pos = 0;
s->buf_len = len;
// printf("[%d]",len);fflush(stdout);
return len;
}
int stream_write_buffer(stream_t *s, unsigned char *buf, int len)
{
int rd;
if (!s->write_buffer)
return -1;
rd = s->write_buffer(s, buf, len);
if (rd < 0)
return -1;
s->pos += rd;
assert(rd == len && "stream_write_buffer(): unexpected short write");
return rd;
}
int stream_seek_internal(stream_t *s, int64_t newpos)
{
if (newpos == 0 || newpos != s->pos) {
switch (s->type) {
case STREAMTYPE_STREAM:
//s->pos=newpos; // real seek
// Some streaming protocol allow to seek backward and forward
// A function call that return -1 can tell that the protocol
// doesn't support seeking.
#ifdef CONFIG_NETWORKING
if (s->seek) { // new stream seek is much cleaner than streaming_ctrl one
if (!s->seek(s, newpos)) {
mp_tmsg(MSGT_STREAM, MSGL_ERR, "Seek failed\n");
return 0;
}
break;
}
if (s->streaming_ctrl != NULL &&
s->streaming_ctrl->streaming_seek) {
if (s->streaming_ctrl->streaming_seek(s->fd, newpos,
s->streaming_ctrl) < 0) {
mp_tmsg(MSGT_STREAM, MSGL_INFO, "Stream not seekable!\n");
return 1;
}
break;
}
#endif
if (newpos < s->pos) {
mp_tmsg(MSGT_STREAM, MSGL_INFO,
"Cannot seek backward in linear streams!\n");
return 1;
}
break;
default:
// This should at the beginning as soon as all streams are converted
if (!s->seek)
return 0;
// Now seek
if (!s->seek(s, newpos)) {
mp_tmsg(MSGT_STREAM, MSGL_ERR, "Seek failed\n");
return 0;
}
}
// putchar('.');fflush(stdout);
//} else {
// putchar('%');fflush(stdout);
}
return -1;
}
int stream_seek_long(stream_t *s, int64_t pos)
{
int res;
int64_t newpos = 0;
// if( mp_msg_test(MSGT_STREAM,MSGL_DBG3) ) printf("seek_long to 0x%X\n",(unsigned int)pos);
s->buf_pos = s->buf_len = 0;
if (s->mode == STREAM_WRITE) {
if (!s->seek || !s->seek(s, pos))
return 0;
return 1;
}
if (s->sector_size)
newpos = (pos / s->sector_size) * s->sector_size;
else
newpos = pos & (~((int64_t)STREAM_BUFFER_SIZE - 1));
if (mp_msg_test(MSGT_STREAM, MSGL_DBG3)) {
mp_msg(
MSGT_STREAM, MSGL_DBG3,
"s->pos=%" PRIX64 " newpos=%" PRIX64 " new_bufpos=%" PRIX64
" buflen=%X \n",
(int64_t)s->pos, (int64_t)newpos, (int64_t)pos, s->buf_len);
}
pos -= newpos;
res = stream_seek_internal(s, newpos);
if (res >= 0)
return res;
while (s->pos < newpos) {
if (stream_fill_buffer(s) <= 0)
break; // EOF
}
s->eof = 0; // EOF reset when seek succeeds.
while (stream_fill_buffer(s) > 0) {
if (pos <= s->buf_len) {
s->buf_pos = pos; // byte position in sector
return 1;
}
pos -= s->buf_len;
}
// Fill failed, but seek still is a success.
s->pos += pos;
s->buf_pos = 0;
s->buf_len = 0;
mp_msg(MSGT_STREAM, MSGL_V,
"stream_seek: Seek to/past EOF: no buffer preloaded.\n");
return 1;
}
void stream_reset(stream_t *s)
{
if (s->eof) {
s->pos = 0;
s->buf_pos = s->buf_len = 0;
s->eof = 0;
}
if (s->control)
s->control(s, STREAM_CTRL_RESET, NULL);
//stream_seek(s,0);
}
int stream_control(stream_t *s, int cmd, void *arg)
{
#ifdef CONFIG_STREAM_CACHE
if (s->cache_pid)
return cache_do_control(s, cmd, arg);
#endif
if (!s->control)
return STREAM_UNSUPPORTED;
return s->control(s, cmd, arg);
}
void stream_update_size(stream_t *s)
{
uint64_t size;
if (stream_control(s, STREAM_CTRL_GET_SIZE, &size) == STREAM_OK) {
if (size > s->end_pos)
s->end_pos = size;
}
}
stream_t *new_memory_stream(unsigned char *data, int len)
{
stream_t *s;
if (len < 0)
return NULL;
s = calloc(1, sizeof(stream_t) + len);
s->fd = -1;
s->type = STREAMTYPE_MEMORY;
s->buf_pos = 0;
s->buf_len = len;
s->start_pos = 0;
s->end_pos = len;
stream_reset(s);
s->pos = len;
memcpy(s->buffer, data, len);
return s;
}
stream_t *new_stream(int fd, int type)
{
stream_t *s = talloc_zero(NULL, stream_t);
#if HAVE_WINSOCK2_H
{
WSADATA wsdata;
int temp = WSAStartup(0x0202, &wsdata); // there might be a better place for this (-> later)
mp_msg(MSGT_STREAM, MSGL_V, "WINSOCK2 init: %i\n", temp);
}
#endif
s->fd = fd;
s->type = type;
stream_reset(s);
return s;
}
void free_stream(stream_t *s)
{
// printf("\n*** free_stream() called ***\n");
#ifdef CONFIG_STREAM_CACHE
cache_uninit(s);
#endif
if (s->close)
s->close(s);
if (s->fd > 0) {
/* on unix we define closesocket to close
on windows however we have to distinguish between
network socket and file */
if (s->url && strstr(s->url, "://"))
closesocket(s->fd);
else
close(s->fd);
}
#if HAVE_WINSOCK2_H
mp_msg(MSGT_STREAM, MSGL_V, "WINSOCK2 uninit\n");
WSACleanup(); // there might be a better place for this (-> later)
#endif
free(s->url);
talloc_free(s);
}
stream_t *new_ds_stream(demux_stream_t *ds)
{
stream_t *s = new_stream(-1, STREAMTYPE_DS);
s->priv = ds;
return s;
}
void stream_set_interrupt_callback(int (*cb)(struct input_ctx *, int),
struct input_ctx *ctx)
{
stream_check_interrupt_cb = cb;
stream_check_interrupt_ctx = ctx;
}
int stream_check_interrupt(int time)
{
if (!stream_check_interrupt_cb) {
usec_sleep(time * 1000);
return 0;
}
return stream_check_interrupt_cb(stream_check_interrupt_ctx, time);
}
/**
* Helper function to read 16 bits little-endian and advance pointer
*/
static uint16_t get_le16_inc(const uint8_t **buf)
{
uint16_t v = AV_RL16(*buf);
*buf += 2;
return v;
}
/**
* Helper function to read 16 bits big-endian and advance pointer
*/
static uint16_t get_be16_inc(const uint8_t **buf)
{
uint16_t v = AV_RB16(*buf);
*buf += 2;
return v;
}
/**
* Find a newline character in buffer
* \param buf buffer to search
* \param len amount of bytes to search in buffer, may not overread
* \param utf16 chose between UTF-8/ASCII/other and LE and BE UTF-16
* 0 = UTF-8/ASCII/other, 1 = UTF-16-LE, 2 = UTF-16-BE
*/
static const uint8_t *find_newline(const uint8_t *buf, int len, int utf16)
{
uint32_t c;
const uint8_t *end = buf + len;
switch (utf16) {
case 0:
return (uint8_t *)memchr(buf, '\n', len);
case 1:
while (buf < end - 1) {
GET_UTF16(c, buf < end - 1 ? get_le16_inc(&buf) : 0, return NULL;
)
if (buf <= end && c == '\n')
return buf - 1;
}
break;
case 2:
while (buf < end - 1) {
GET_UTF16(c, buf < end - 1 ? get_be16_inc(&buf) : 0, return NULL;
)
if (buf <= end && c == '\n')
return buf - 1;
}
break;
}
return NULL;
}
/**
* Copy a number of bytes, converting to UTF-8 if input is UTF-16
* \param dst buffer to copy to
* \param dstsize size of dst buffer
* \param src buffer to copy from
* \param len amount of bytes to copy from src
* \param utf16 chose between UTF-8/ASCII/other and LE and BE UTF-16
* 0 = UTF-8/ASCII/other, 1 = UTF-16-LE, 2 = UTF-16-BE
*/
static int copy_characters(uint8_t *dst, int dstsize,
const uint8_t *src, int *len, int utf16)
{
uint32_t c;
uint8_t *dst_end = dst + dstsize;
const uint8_t *end = src + *len;
switch (utf16) {
case 0:
if (*len > dstsize)
*len = dstsize;
memcpy(dst, src, *len);
return *len;
case 1:
while (src < end - 1 && dst_end - dst > 8) {
uint8_t tmp;
GET_UTF16(c, src < end - 1 ? get_le16_inc(&src) : 0,;
)
PUT_UTF8(c, tmp, *dst++ = tmp;
)
}
*len -= end - src;
return dstsize - (dst_end - dst);
case 2:
while (src < end - 1 && dst_end - dst > 8) {
uint8_t tmp;
GET_UTF16(c, src < end - 1 ? get_be16_inc(&src) : 0,;
)
PUT_UTF8(c, tmp, *dst++ = tmp;
)
}
*len -= end - src;
return dstsize - (dst_end - dst);
}
return 0;
}
unsigned char *stream_read_line(stream_t *s, unsigned char *mem, int max,
int utf16)
{
int len;
const unsigned char *end;
unsigned char *ptr = mem;
if (max < 1)
return NULL;
max--; // reserve one for 0-termination
do {
len = s->buf_len - s->buf_pos;
// try to fill the buffer
if (len <= 0 &&
(!cache_stream_fill_buffer(s) ||
(len = s->buf_len - s->buf_pos) <= 0))
break;
end = find_newline(s->buffer + s->buf_pos, len, utf16);
if (end)
len = end - (s->buffer + s->buf_pos) + 1;
if (len > 0 && max > 0) {
int l = copy_characters(ptr, max, s->buffer + s->buf_pos, &len,
utf16);
max -= l;
ptr += l;
if (!len)
break;
}
s->buf_pos += len;
} while (!end);
ptr[0] = 0;
if (s->eof && ptr == mem)
return NULL;
return mem;
}
struct bstr stream_read_complete(struct stream *s, void *talloc_ctx,
int max_size, int padding_bytes)
{
if (max_size > 1000000000)
abort();
int bufsize;
int total_read = 0;
int padding = FFMAX(padding_bytes, 1);
char *buf = NULL;
if (s->end_pos > max_size)
return (struct bstr){
NULL, 0
};
if (s->end_pos > 0)
bufsize = s->end_pos + padding;
else
bufsize = 1000;
while (1) {
buf = talloc_realloc_size(talloc_ctx, buf, bufsize);
int readsize = stream_read(s, buf + total_read, bufsize - total_read);
total_read += readsize;
if (total_read < bufsize)
break;
if (bufsize > max_size) {
talloc_free(buf);
return (struct bstr){
NULL, 0
};
}
bufsize = FFMIN(bufsize + (bufsize >> 1), max_size + padding);
}
buf = talloc_realloc_size(talloc_ctx, buf, total_read + padding);
return (struct bstr){
buf, total_read
};
}
Reference in New Issue View Git Blame Copy Permalink