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mpv/stream/stream.c
Uoti Urpala fc6a9e4a3e build: switch to libavutil bswap.h and intreadwrite.h
Remove the private bswap and intreadwrite.h implementations and use
libavutil headers instead.

Originally these headers weren't publicly installed by libavutil at
all. That already changed in 2010, but the pure C bswap version in
installed headers was very inefficient. That was recently (2011-12)
improved and now using the public bswap version probably shouldn't
cause noticeable performance problems, at least if using a new enough
compiler.
2012-02-01 22:46:27 +02:00

725 lines
19 KiB
C

/*
* 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 "mp_msg.h"
#include "osdep/shmem.h"
#include "osdep/timer.h"
#include "network.h"
#include "stream.h"
#include "libmpdemux/demuxer.h"
#include "m_option.h"
#include "m_struct.h"
#include "cache2.h"
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_netstream;
extern const stream_info_t stream_info_pnm;
extern const stream_info_t stream_info_asf;
extern const stream_info_t stream_info_rtsp;
extern const stream_info_t stream_info_rtp;
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_dvdnav;
extern const stream_info_t stream_info_smb;
extern const stream_info_t stream_info_sdp;
extern const stream_info_t stream_info_rtsp_sip;
extern const stream_info_t stream_info_cue;
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_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
#ifdef CONFIG_NETWORKING
&stream_info_netstream,
&stream_info_http1,
&stream_info_asf,
&stream_info_pnm,
&stream_info_rtsp,
#ifdef CONFIG_LIVE555
&stream_info_sdp,
&stream_info_rtsp_sip,
#endif
&stream_info_rtp,
&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
&stream_info_cue,
#ifdef CONFIG_DVDREAD
&stream_info_ifo,
&stream_info_dvd,
#endif
#ifdef CONFIG_DVDNAV
&stream_info_dvdnav,
#endif
#ifdef CONFIG_LIBBLURAY
&stream_info_bluray,
#endif
&stream_info_ffmpeg,
&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, bstr("stream url"), bstr(filename), false, arg) < 0) {
mp_tmsg(MSGT_OPEN,MSGL_ERR, "URL parsing failed on url %s\n",filename);
m_struct_free(desc,arg);
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);
free(s);
return NULL;
}
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);
return s;
}
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;
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_output_stream(const char *filename, struct MPOpts *options)
{
int file_format; //unused
if(!filename) {
mp_msg(MSGT_OPEN,MSGL_ERR,"open_output_stream(), NULL filename, report this bug\n");
return NULL;
}
return open_stream_full(filename,STREAM_WRITE,options,&file_format);
}
//=================== STREAMER =========================
void stream_capture_do(stream_t *s)
{
if (fwrite(s->buffer, s->buf_len, 1, s->capture_file) < 1) {
mp_tmsg(MSGT_GLOBAL, MSGL_ERR, "Error writing capture file: %s\n",
strerror(errno));
fclose(s->capture_file);
s->capture_file = NULL;
}
}
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:
#ifdef CONFIG_NETWORKING
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->eof = 1;
} else
#endif
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){
off_t pos = s->pos;
// do not retry if this looks like proper eof
if (s->eof || (s->end_pos && pos == s->end_pos))
goto eof_out;
// dvdnav has some horrible hacks to "suspend" reads,
// we need to skip this code or seeks will hang.
if (s->type == STREAMTYPE_DVDNAV)
goto eof_out;
// just in case this is an error e.g. due to network
// timeout reset and retry
// Seeking is used as a hack to make network streams
// reopen the connection, ideally they would implement
// e.g. a STREAM_CTRL_RECONNECT to do this
s->eof=1;
stream_reset(s);
if (stream_seek_internal(s, pos) >= 0 || s->pos != pos) // seek failed
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);
if (s->capture_file)
stream_capture_do(s);
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, off_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,off_t pos){
int res;
off_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&(~((off_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){
if(!s->control) return STREAM_UNSUPPORTED;
#ifdef CONFIG_STREAM_CACHE
if (s->cache_pid)
return cache_do_control(s, cmd, arg);
#endif
return s->control(s, cmd, arg);
}
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=calloc(1, sizeof(stream_t));
if(s==NULL) return NULL;
#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;
s->buf_pos=s->buf_len=0;
s->start_pos=s->end_pos=0;
s->priv=NULL;
s->url=NULL;
s->cache_pid=0;
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->capture_file) {
fclose(s->capture_file);
s->capture_file = NULL;
}
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
// Disabled atm, i don't like that. s->priv can be anything after all
// streams should destroy their priv on close
//free(s->priv);
free(s->url);
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};
}