mirror of
https://github.com/mpv-player/mpv.git
synced 2024-09-20 20:03:10 +02:00
005375bb7d
Some code in mplayer.c did stuff like accessing (dvd_priv_t *)st->priv. Do this indirectly by introducing STREAM_CTRL_GET_DVD_INFO. This is extremely specific to DVD, so it's not worth abstracting this further. This is a preparation for turning the cache into an actual stream, which simply wraps the cached stream. There are other streams which are accessed in the way DVD was, at least TV/radio/DVB. We assume these can't be used with the cache. The code doesn't look thread-safe or fork aware.
815 lines
25 KiB
C
815 lines
25 KiB
C
/*
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* This file is part of MPlayer.
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*
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* MPlayer is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* MPlayer is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with MPlayer; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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// Initial draft of my new cache system...
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// Note it runs in 2 processes (using fork()), but doesn't require locking!!
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// TODO: seeking, data consistency checking
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#define READ_SLEEP_TIME 10
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// These defines are used to reduce the cost of many successive
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// seeks (e.g. when a file has no index) by spinning quickly at first.
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#define INITIAL_FILL_USLEEP_TIME 1000
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#define INITIAL_FILL_USLEEP_COUNT 10
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#define FILL_USLEEP_TIME 50000
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#define PREFILL_SLEEP_TIME 200
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#define CONTROL_SLEEP_TIME 1
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <signal.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include <errno.h>
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#include <libavutil/common.h>
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#include "config.h"
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#include "osdep/shmem.h"
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#include "osdep/timer.h"
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#if defined(__MINGW32__)
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#include <windows.h>
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static void ThreadProc(void *s);
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#elif defined(PTHREAD_CACHE)
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#include <pthread.h>
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static void *ThreadProc(void *s);
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#else
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#include <sys/wait.h>
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#define FORKED_CACHE 1
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#endif
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#ifndef FORKED_CACHE
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#define FORKED_CACHE 0
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#endif
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#include "core/mp_msg.h"
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#include "stream.h"
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#include "cache2.h"
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#include "core/mp_common.h"
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typedef struct {
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// constats:
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unsigned char *buffer; // base pointer of the allocated buffer memory
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int64_t buffer_size; // size of the allocated buffer memory
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int sector_size; // size of a single sector (2048/2324)
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int64_t back_size; // we should keep back_size amount of old bytes for backward seek
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int64_t fill_limit; // we should fill buffer only if space>=fill_limit
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int64_t seek_limit; // keep filling cache if distance is less that seek limit
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#if FORKED_CACHE
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pid_t ppid; // parent PID to detect killed parent
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#endif
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// filler's pointers:
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int eof;
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int64_t min_filepos; // buffer contain only a part of the file, from min-max pos
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int64_t max_filepos;
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int64_t offset; // filepos <-> bufferpos offset value (filepos of the buffer's first byte)
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// reader's pointers:
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int64_t read_filepos;
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// commands/locking:
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// int seek_lock; // 1 if we will seek/reset buffer, 2 if we are ready for cmd
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// int fifo_flag; // 1 if we should use FIFO to notice cache about buffer reads.
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// callback
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stream_t *stream;
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volatile int control;
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volatile uint64_t control_uint_arg;
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volatile double control_double_arg;
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volatile struct stream_lang_req control_lang_arg;
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volatile struct stream_dvd_info_req control_dvd_info_arg;
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volatile int control_res;
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volatile double stream_time_length;
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volatile double stream_time_pos;
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volatile double stream_start_time;
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volatile int idle;
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} cache_vars_t;
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static void cache_wakeup(stream_t *s)
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{
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#if FORKED_CACHE
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// signal process to wake up immediately
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kill(s->cache_pid, SIGUSR1);
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#endif
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}
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static void cache_flush(cache_vars_t *s)
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{
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s->offset = s->min_filepos = s->max_filepos = s->read_filepos; // drop cache content :(
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}
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static int cache_read(cache_vars_t *s, unsigned char *buf, int size)
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{
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int total = 0;
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int sleep_count = 0;
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int64_t last_max = s->max_filepos;
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while (size > 0) {
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int64_t pos, newb, len;
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//printf("CACHE2_READ: 0x%X <= 0x%X <= 0x%X \n",s->min_filepos,s->read_filepos,s->max_filepos);
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if (s->read_filepos >= s->max_filepos || s->read_filepos <
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s->min_filepos) {
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// eof?
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if (s->eof)
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break;
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if (s->max_filepos == last_max) {
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if (sleep_count++ == 10)
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mp_msg(MSGT_CACHE, MSGL_WARN, "Cache empty, consider "
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"increasing -cache and/or -cache-min. "
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"[performance issue]\n");
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} else {
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last_max = s->max_filepos;
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sleep_count = 0;
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}
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// waiting for buffer fill...
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if (stream_check_interrupt(READ_SLEEP_TIME)) {
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s->eof = 1;
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break;
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}
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continue; // try again...
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}
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sleep_count = 0;
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newb = s->max_filepos - s->read_filepos; // new bytes in the buffer
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// printf("*** newb: %d bytes ***\n",newb);
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pos = s->read_filepos - s->offset;
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if (pos < 0)
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pos += s->buffer_size;
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else if (pos >= s->buffer_size)
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pos -= s->buffer_size;
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if (newb > s->buffer_size - pos)
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newb = s->buffer_size - pos; // handle wrap...
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if (newb > size)
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newb = size;
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// check:
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if (s->read_filepos < s->min_filepos)
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mp_msg(MSGT_CACHE, MSGL_ERR,
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"Ehh. s->read_filepos<s->min_filepos !!! Report bug...\n");
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// len=write(mem,newb)
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//printf("Buffer read: %d bytes\n",newb);
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memcpy(buf, &s->buffer[pos], newb);
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buf += newb;
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len = newb;
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// ...
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s->read_filepos += len;
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size -= len;
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total += len;
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}
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return total;
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}
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static int cache_fill(cache_vars_t *s)
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{
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int64_t back, back2, newb, space, len, pos;
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int64_t read = s->read_filepos;
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int read_chunk;
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int wraparound_copy = 0;
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if (read < s->min_filepos || read > s->max_filepos) {
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// seek...
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mp_msg(MSGT_CACHE, MSGL_DBG2,
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"Out of boundaries... seeking to 0x%" PRIX64 " \n", read);
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// drop cache contents only if seeking backward or too much fwd.
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// This is also done for on-disk files, since it loses the backseek cache.
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// That in turn can cause major bandwidth increase and performance
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// issues with e.g. mov or badly interleaved files
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if (read < s->min_filepos || read >= s->max_filepos + s->seek_limit) {
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cache_flush(s);
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if (s->stream->eof)
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stream_reset(s->stream);
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stream_seek_internal(s->stream, read);
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mp_msg(MSGT_CACHE, MSGL_DBG2, "Seek done. new pos: 0x%" PRIX64 " \n",
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(int64_t)stream_tell(s->stream));
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}
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}
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// calc number of back-bytes:
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back = read - s->min_filepos;
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if (back < 0)
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back = 0; // strange...
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if (back > s->back_size)
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back = s->back_size;
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// calc number of new bytes:
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newb = s->max_filepos - read;
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if (newb < 0)
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newb = 0; // strange...
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// calc free buffer space:
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space = s->buffer_size - (newb + back);
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// calc bufferpos:
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pos = s->max_filepos - s->offset;
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if (pos >= s->buffer_size)
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pos -= s->buffer_size; // wrap-around
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if (space < s->fill_limit) {
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// printf("Buffer is full (%d bytes free, limit: %d)\n",space,s->fill_limit);
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return 0; // no fill...
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}
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// printf("### read=0x%X back=%d newb=%d space=%d pos=%d\n",read,back,newb,space,pos);
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// try to avoid wrap-around. If not possible due to sector size
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// do an extra copy.
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if (space > s->buffer_size - pos) {
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if (s->buffer_size - pos >= s->sector_size)
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space = s->buffer_size - pos;
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else {
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space = s->sector_size;
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wraparound_copy = 1;
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}
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}
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// limit one-time block size
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read_chunk = s->stream->read_chunk;
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if (!read_chunk)
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read_chunk = 4 * s->sector_size;
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space = FFMIN(space, read_chunk);
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#if 1
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// back+newb+space <= buffer_size
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back2 = s->buffer_size - (space + newb); // max back size
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if (s->min_filepos < (read - back2))
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s->min_filepos = read - back2;
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#else
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s->min_filepos = read - back; // avoid seeking-back to temp area...
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#endif
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if (wraparound_copy) {
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int to_copy;
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len = stream_read_internal(s->stream, s->stream->buffer, space);
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to_copy = FFMIN(len, s->buffer_size - pos);
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memcpy(s->buffer + pos, s->stream->buffer, to_copy);
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memcpy(s->buffer, s->stream->buffer + to_copy, len - to_copy);
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} else
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len = stream_read_internal(s->stream, &s->buffer[pos], space);
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s->eof = !len;
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s->max_filepos += len;
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if (pos + len >= s->buffer_size)
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s->offset += s->buffer_size; // wrap...
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return len;
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}
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static int cache_execute_control(cache_vars_t *s)
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{
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double double_res;
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unsigned uint_res;
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uint64_t uint64_res;
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int needs_flush = 0;
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static double last;
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int quit = s->control == -2;
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uint64_t old_pos = s->stream->pos;
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int old_eof = s->stream->eof;
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if (quit || !s->stream->control) {
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s->stream_time_length = 0;
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s->stream_time_pos = MP_NOPTS_VALUE;
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s->control_res = STREAM_UNSUPPORTED;
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s->control = -1;
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return !quit;
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}
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if (mp_time_sec() - last > 0.099) {
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double len, pos;
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if (s->stream->control(s->stream, STREAM_CTRL_GET_TIME_LENGTH,
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&len) == STREAM_OK)
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s->stream_time_length = len;
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else
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s->stream_time_length = 0;
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if (s->stream->control(s->stream, STREAM_CTRL_GET_CURRENT_TIME,
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&pos) == STREAM_OK)
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s->stream_time_pos = pos;
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else
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s->stream_time_pos = MP_NOPTS_VALUE;
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if (s->stream->control(s->stream, STREAM_CTRL_GET_START_TIME,
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&pos) == STREAM_OK)
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s->stream_start_time = pos;
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else
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s->stream_start_time = MP_NOPTS_VALUE;
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#if FORKED_CACHE
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// if parent PID changed, main process was killed -> exit
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if (s->ppid != getppid()) {
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mp_msg(MSGT_CACHE, MSGL_WARN,
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"Parent process disappeared, exiting cache process.\n");
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return 0;
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}
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#endif
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last = mp_time_sec();
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}
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if (s->control == -1)
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return 1;
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switch (s->control) {
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case STREAM_CTRL_SEEK_TO_TIME:
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needs_flush = 1;
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case STREAM_CTRL_GET_CURRENT_TIME:
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case STREAM_CTRL_GET_ASPECT_RATIO:
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case STREAM_CTRL_GET_START_TIME:
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case STREAM_CTRL_GET_CHAPTER_TIME:
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double_res = s->control_double_arg;
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s->control_res = s->stream->control(s->stream, s->control, &double_res);
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s->control_double_arg = double_res;
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break;
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case STREAM_CTRL_SEEK_TO_CHAPTER:
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case STREAM_CTRL_SET_ANGLE:
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needs_flush = 1;
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uint_res = s->control_uint_arg;
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case STREAM_CTRL_GET_NUM_TITLES:
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case STREAM_CTRL_GET_NUM_CHAPTERS:
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case STREAM_CTRL_GET_CURRENT_TITLE:
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case STREAM_CTRL_GET_CURRENT_CHAPTER:
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case STREAM_CTRL_GET_NUM_ANGLES:
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case STREAM_CTRL_GET_ANGLE:
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s->control_res = s->stream->control(s->stream, s->control, &uint_res);
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s->control_uint_arg = uint_res;
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break;
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case STREAM_CTRL_GET_SIZE:
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s->control_res = s->stream->control(s->stream, s->control, &uint64_res);
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s->control_uint_arg = uint64_res;
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break;
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case STREAM_CTRL_GET_LANG:
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s->control_res = s->stream->control(s->stream, s->control,
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(void *)&s->control_lang_arg);
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break;
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case STREAM_CTRL_GET_DVD_INFO:
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s->control_res = s->stream->control(s->stream, s->control,
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(void *)&s->control_dvd_info_arg);
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break;
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case STREAM_CTRL_MANAGES_TIMELINE:
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s->control_res = s->stream->control(s->stream, s->control, NULL);
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break;
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default:
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s->control_res = STREAM_UNSUPPORTED;
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break;
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}
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if (s->control_res == STREAM_OK && needs_flush) {
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s->read_filepos = s->stream->pos;
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s->eof = s->stream->eof;
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cache_flush(s);
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} else if (needs_flush &&
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(old_pos != s->stream->pos || old_eof != s->stream->eof))
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mp_msg(
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MSGT_STREAM, MSGL_ERR,
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"STREAM_CTRL changed stream pos but returned error, this is not allowed!\n");
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s->control = -1;
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return 1;
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}
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static void *shared_alloc(int64_t size)
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{
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#if FORKED_CACHE
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return shmem_alloc(size);
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#else
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return malloc(size);
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#endif
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}
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static void shared_free(void *ptr, int64_t size)
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{
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#if FORKED_CACHE
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shmem_free(ptr, size);
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#else
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free(ptr);
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#endif
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}
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static cache_vars_t *cache_init(int64_t size, int sector)
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{
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int64_t num;
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cache_vars_t *s = shared_alloc(sizeof(cache_vars_t));
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if (s == NULL)
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return NULL;
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memset(s, 0, sizeof(cache_vars_t));
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num = size / sector;
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if (num < 32)
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num = 32;
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//64kb min_size
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s->buffer_size = num * sector;
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s->sector_size = sector;
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s->buffer = shared_alloc(s->buffer_size);
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if (s->buffer == NULL) {
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shared_free(s, sizeof(cache_vars_t));
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return NULL;
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}
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s->fill_limit = 8 * sector;
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s->back_size = s->buffer_size / 2;
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#if FORKED_CACHE
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s->ppid = getpid();
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#endif
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return s;
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}
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void cache_uninit(stream_t *s)
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{
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cache_vars_t *c = s->cache_data;
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if (s->cache_pid) {
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#if !FORKED_CACHE
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cache_do_control(s, -2, NULL);
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#else
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kill(s->cache_pid, SIGKILL);
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waitpid(s->cache_pid, NULL, 0);
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#endif
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s->cache_pid = 0;
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}
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if (!c)
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return;
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shared_free(c->buffer, c->buffer_size);
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c->buffer = NULL;
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c->stream = NULL;
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shared_free(s->cache_data, sizeof(cache_vars_t));
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s->cache_data = NULL;
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}
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#if FORKED_CACHE
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static void exit_sighandler(int x)
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{
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// close stream
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exit(0);
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}
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static void dummy_sighandler(int x)
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{
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}
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#endif
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/**
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* Main loop of the cache process or thread.
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*/
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static void cache_mainloop(cache_vars_t *s)
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{
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int sleep_count = 0;
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#if FORKED_CACHE
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struct sigaction sa = {
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.sa_handler = SIG_IGN
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};
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sigaction(SIGUSR1, &sa, NULL);
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#endif
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do {
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if (!cache_fill(s)) {
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s->idle = 1;
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#if FORKED_CACHE
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// Let signal wake us up, we cannot leave this
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// enabled since we do not handle EINTR in most places.
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// This might need extra code to work on BSD.
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sa.sa_handler = dummy_sighandler;
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sigaction(SIGUSR1, &sa, NULL);
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#endif
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if (sleep_count < INITIAL_FILL_USLEEP_COUNT) {
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sleep_count++;
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mp_sleep_us(INITIAL_FILL_USLEEP_TIME);
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} else
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mp_sleep_us(FILL_USLEEP_TIME); // idle
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#if FORKED_CACHE
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sa.sa_handler = SIG_IGN;
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sigaction(SIGUSR1, &sa, NULL);
|
|
#endif
|
|
} else {
|
|
sleep_count = 0;
|
|
s->idle = 0;
|
|
}
|
|
} while (cache_execute_control(s));
|
|
}
|
|
|
|
int stream_enable_cache_percent(stream_t *stream, int64_t stream_cache_size,
|
|
float stream_cache_min_percent,
|
|
float stream_cache_seek_min_percent)
|
|
{
|
|
return stream_enable_cache(stream, stream_cache_size * 1024,
|
|
stream_cache_size * 1024 *
|
|
(stream_cache_min_percent / 100.0),
|
|
stream_cache_size * 1024 *
|
|
(stream_cache_seek_min_percent / 100.0));
|
|
}
|
|
|
|
/**
|
|
* \return 1 on success, 0 if the function was interrupted and -1 on error
|
|
*/
|
|
int stream_enable_cache(stream_t *stream, int64_t size, int64_t min,
|
|
int64_t seek_limit)
|
|
{
|
|
if (size < 0)
|
|
size = stream->cache_size * 1024;
|
|
if (!size)
|
|
return 1;
|
|
mp_tmsg(MSGT_NETWORK, MSGL_INFO, "Cache size set to %" PRId64 " KiB\n",
|
|
size / 1024);
|
|
|
|
int ss = stream->sector_size ? stream->sector_size : STREAM_BUFFER_SIZE;
|
|
int res = -1;
|
|
cache_vars_t *s;
|
|
|
|
if (size > SIZE_MAX) {
|
|
mp_msg(MSGT_CACHE, MSGL_FATAL,
|
|
"Cache size larger than max. allocation size\n");
|
|
return -1;
|
|
}
|
|
|
|
s = cache_init(size, ss);
|
|
if (s == NULL)
|
|
return -1;
|
|
stream->cache_data = s;
|
|
s->stream = stream; // callback
|
|
s->seek_limit = seek_limit;
|
|
|
|
|
|
//make sure that we won't wait from cache_fill
|
|
//more data than it is allowed to fill
|
|
if (s->seek_limit > s->buffer_size - s->fill_limit)
|
|
s->seek_limit = s->buffer_size - s->fill_limit;
|
|
if (min > s->buffer_size - s->fill_limit)
|
|
min = s->buffer_size - s->fill_limit;
|
|
// to make sure we wait for the cache process/thread to be active
|
|
// before continuing
|
|
if (min <= 0)
|
|
min = 1;
|
|
|
|
#if FORKED_CACHE
|
|
if ((stream->cache_pid = fork())) {
|
|
if ((pid_t)stream->cache_pid == -1)
|
|
stream->cache_pid = 0;
|
|
#else
|
|
{
|
|
stream_t *stream2 = malloc(sizeof(stream_t));
|
|
memcpy(stream2, s->stream, sizeof(stream_t));
|
|
s->stream = stream2;
|
|
#if defined(__MINGW32__)
|
|
stream->cache_pid = _beginthread(ThreadProc, 0, s);
|
|
#else
|
|
{
|
|
pthread_t tid;
|
|
pthread_create(&tid, NULL, ThreadProc, s);
|
|
stream->cache_pid = 1;
|
|
}
|
|
#endif
|
|
#endif
|
|
if (!stream->cache_pid) {
|
|
mp_msg(MSGT_CACHE, MSGL_ERR,
|
|
"Starting cache process/thread failed: %s.\n",
|
|
strerror(errno));
|
|
goto err_out;
|
|
}
|
|
// wait until cache is filled at least prefill_init %
|
|
mp_msg(MSGT_CACHE, MSGL_V, "CACHE_PRE_INIT: %" PRId64 " [%" PRId64 "] "
|
|
"%" PRId64 " pre:%" PRId64 " eof:%d \n",
|
|
s->min_filepos, s->read_filepos, s->max_filepos, min, s->eof);
|
|
while (s->read_filepos < s->min_filepos ||
|
|
s->max_filepos - s->read_filepos < min)
|
|
{
|
|
mp_tmsg(MSGT_CACHE, MSGL_STATUS, "\rCache fill: %5.2f%% "
|
|
"(%" PRId64 " bytes) ",
|
|
100.0 * (float)(s->max_filepos - s->read_filepos) /
|
|
(float)(s->buffer_size),
|
|
s->max_filepos - s->read_filepos);
|
|
if (s->eof)
|
|
break; // file is smaller than prefill size
|
|
if (stream_check_interrupt(PREFILL_SLEEP_TIME)) {
|
|
res = 0;
|
|
goto err_out;
|
|
}
|
|
}
|
|
mp_msg(MSGT_CACHE, MSGL_STATUS, "\n");
|
|
stream->cached = true;
|
|
return 1; // parent exits
|
|
|
|
err_out:
|
|
cache_uninit(stream);
|
|
return res;
|
|
}
|
|
|
|
#if FORKED_CACHE
|
|
signal(SIGTERM, exit_sighandler); // kill
|
|
cache_mainloop(s);
|
|
// make sure forked code never leaves this function
|
|
exit(0);
|
|
#endif
|
|
}
|
|
|
|
#if !FORKED_CACHE
|
|
#if defined(__MINGW32__)
|
|
static void ThreadProc(void *s)
|
|
{
|
|
cache_mainloop(s);
|
|
_endthread();
|
|
}
|
|
#else
|
|
static void *ThreadProc(void *s)
|
|
{
|
|
cache_mainloop(s);
|
|
return NULL;
|
|
}
|
|
#endif
|
|
#endif
|
|
|
|
int cache_stream_fill_buffer(stream_t *s)
|
|
{
|
|
int len;
|
|
int sector_size;
|
|
if (!s->cache_pid)
|
|
return stream_fill_buffer(s);
|
|
|
|
if (s->pos != ((cache_vars_t *)s->cache_data)->read_filepos)
|
|
mp_msg(MSGT_CACHE, MSGL_ERR,
|
|
"!!! read_filepos differs!!! report this bug...\n");
|
|
sector_size = ((cache_vars_t *)s->cache_data)->sector_size;
|
|
if (sector_size > STREAM_MAX_SECTOR_SIZE) {
|
|
mp_msg(MSGT_CACHE, MSGL_ERR, "Sector size %i larger than maximum %i\n",
|
|
sector_size,
|
|
STREAM_MAX_SECTOR_SIZE);
|
|
sector_size = STREAM_MAX_SECTOR_SIZE;
|
|
}
|
|
|
|
len = cache_read(s->cache_data, s->buffer, sector_size);
|
|
//printf("cache_stream_fill_buffer->read -> %d\n",len);
|
|
|
|
if (len <= 0) {
|
|
s->eof = 1;
|
|
s->buf_pos = s->buf_len = 0;
|
|
return 0;
|
|
}
|
|
s->eof = 0;
|
|
s->buf_pos = 0;
|
|
s->buf_len = len;
|
|
s->pos += len;
|
|
// printf("[%d]",len);fflush(stdout);
|
|
stream_capture_write(s);
|
|
return len;
|
|
|
|
}
|
|
|
|
int cache_stream_seek_long(stream_t *stream, int64_t pos)
|
|
{
|
|
cache_vars_t *s;
|
|
int64_t newpos;
|
|
if (!stream->cache_pid)
|
|
return stream_seek_long(stream, pos);
|
|
|
|
s = stream->cache_data;
|
|
// s->seek_lock=1;
|
|
|
|
mp_msg(MSGT_CACHE, MSGL_DBG2, "CACHE2_SEEK: 0x%" PRIX64 " <= 0x%" PRIX64
|
|
" (0x%" PRIX64 ") <= 0x%" PRIX64 " \n",
|
|
s->min_filepos, pos, s->read_filepos, s->max_filepos);
|
|
|
|
newpos = pos / s->sector_size;
|
|
newpos *= s->sector_size; // align
|
|
stream->pos = s->read_filepos = newpos;
|
|
s->eof = 0; // !!!!!!!
|
|
cache_wakeup(stream);
|
|
|
|
cache_stream_fill_buffer(stream);
|
|
|
|
pos -= newpos;
|
|
if (pos >= 0 && pos <= stream->buf_len) {
|
|
stream->buf_pos = pos; // byte position in sector
|
|
return 1;
|
|
}
|
|
|
|
// stream->buf_pos=stream->buf_len=0;
|
|
// return 1;
|
|
|
|
mp_msg(MSGT_CACHE, MSGL_V,
|
|
"cache_stream_seek: WARNING! Can't seek to 0x%" PRIX64 " !\n",
|
|
pos + newpos);
|
|
return 0;
|
|
}
|
|
|
|
int cache_do_control(stream_t *stream, int cmd, void *arg)
|
|
{
|
|
int sleep_count = 0;
|
|
int pos_change = 0;
|
|
cache_vars_t *s = stream->cache_data;
|
|
switch (cmd) {
|
|
case STREAM_CTRL_GET_CACHE_SIZE:
|
|
*(int64_t *)arg = s->buffer_size;
|
|
return STREAM_OK;
|
|
case STREAM_CTRL_GET_CACHE_FILL:
|
|
*(int64_t *)arg = s->max_filepos - s->read_filepos;
|
|
return STREAM_OK;
|
|
case STREAM_CTRL_GET_CACHE_IDLE:
|
|
*(int *)arg = s->idle;
|
|
return STREAM_OK;
|
|
case STREAM_CTRL_SEEK_TO_TIME:
|
|
s->control_double_arg = *(double *)arg;
|
|
s->control = cmd;
|
|
pos_change = 1;
|
|
break;
|
|
case STREAM_CTRL_SEEK_TO_CHAPTER:
|
|
case STREAM_CTRL_SET_ANGLE:
|
|
s->control_uint_arg = *(unsigned *)arg;
|
|
s->control = cmd;
|
|
pos_change = 1;
|
|
break;
|
|
// the core might call these every frame, so cache them...
|
|
case STREAM_CTRL_GET_TIME_LENGTH:
|
|
*(double *)arg = s->stream_time_length;
|
|
return s->stream_time_length ? STREAM_OK : STREAM_UNSUPPORTED;
|
|
case STREAM_CTRL_GET_CURRENT_TIME:
|
|
*(double *)arg = s->stream_time_pos;
|
|
return s->stream_time_pos !=
|
|
MP_NOPTS_VALUE ? STREAM_OK : STREAM_UNSUPPORTED;
|
|
case STREAM_CTRL_GET_START_TIME:
|
|
*(double *)arg = s->stream_start_time;
|
|
return s->stream_start_time !=
|
|
MP_NOPTS_VALUE ? STREAM_OK : STREAM_UNSUPPORTED;
|
|
case STREAM_CTRL_GET_CHAPTER_TIME:
|
|
s->control_double_arg = *(double *)arg;
|
|
s->control = cmd;
|
|
break;
|
|
case STREAM_CTRL_GET_LANG:
|
|
s->control_lang_arg = *(struct stream_lang_req *)arg;
|
|
case STREAM_CTRL_GET_DVD_INFO:
|
|
s->control_dvd_info_arg = *(struct stream_dvd_info_req *)arg;
|
|
case STREAM_CTRL_GET_NUM_TITLES:
|
|
case STREAM_CTRL_GET_NUM_CHAPTERS:
|
|
case STREAM_CTRL_GET_CURRENT_TITLE:
|
|
case STREAM_CTRL_GET_CURRENT_CHAPTER:
|
|
case STREAM_CTRL_GET_ASPECT_RATIO:
|
|
case STREAM_CTRL_GET_NUM_ANGLES:
|
|
case STREAM_CTRL_GET_ANGLE:
|
|
case STREAM_CTRL_GET_SIZE:
|
|
case STREAM_CTRL_MANAGES_TIMELINE:
|
|
case -2:
|
|
s->control = cmd;
|
|
break;
|
|
default:
|
|
return STREAM_UNSUPPORTED;
|
|
}
|
|
cache_wakeup(stream);
|
|
while (s->control != -1) {
|
|
if (sleep_count++ == 1000)
|
|
mp_msg(MSGT_CACHE, MSGL_WARN,
|
|
"Cache not responding! [performance issue]\n");
|
|
if (stream_check_interrupt(CONTROL_SLEEP_TIME)) {
|
|
s->eof = 1;
|
|
return STREAM_UNSUPPORTED;
|
|
}
|
|
}
|
|
if (s->control_res != STREAM_OK)
|
|
return s->control_res;
|
|
// We cannot do this on failure, since this would cause the
|
|
// stream position to jump when e.g. STREAM_CTRL_SEEK_TO_TIME
|
|
// is unsupported - but in that case we need the old value
|
|
// to do the fallback seek.
|
|
// This unfortunately can lead to slightly different behaviour
|
|
// with and without cache if the protocol changes pos even
|
|
// when an error happened.
|
|
if (pos_change) {
|
|
stream->pos = s->read_filepos;
|
|
stream->eof = s->eof;
|
|
}
|
|
switch (cmd) {
|
|
case STREAM_CTRL_GET_TIME_LENGTH:
|
|
case STREAM_CTRL_GET_CURRENT_TIME:
|
|
case STREAM_CTRL_GET_ASPECT_RATIO:
|
|
case STREAM_CTRL_GET_START_TIME:
|
|
case STREAM_CTRL_GET_CHAPTER_TIME:
|
|
*(double *)arg = s->control_double_arg;
|
|
break;
|
|
case STREAM_CTRL_GET_NUM_TITLES:
|
|
case STREAM_CTRL_GET_NUM_CHAPTERS:
|
|
case STREAM_CTRL_GET_CURRENT_TITLE:
|
|
case STREAM_CTRL_GET_CURRENT_CHAPTER:
|
|
case STREAM_CTRL_GET_NUM_ANGLES:
|
|
case STREAM_CTRL_GET_ANGLE:
|
|
*(unsigned *)arg = s->control_uint_arg;
|
|
break;
|
|
case STREAM_CTRL_GET_SIZE:
|
|
*(uint64_t *)arg = s->control_uint_arg;
|
|
break;
|
|
case STREAM_CTRL_GET_LANG:
|
|
*(struct stream_lang_req *)arg = s->control_lang_arg;
|
|
break;
|
|
case STREAM_CTRL_GET_DVD_INFO:
|
|
*(struct stream_dvd_info_req *)arg = s->control_dvd_info_arg;
|
|
break;
|
|
case STREAM_CTRL_MANAGES_TIMELINE:
|
|
break;
|
|
}
|
|
return s->control_res;
|
|
}
|