diff options
Diffstat (limited to 'stream/cache2.c')
| -rw-r--r-- | stream/cache2.c | 735 |
1 files changed, 0 insertions, 735 deletions
diff --git a/stream/cache2.c b/stream/cache2.c deleted file mode 100644 index 302bf6ba17..0000000000 --- a/stream/cache2.c +++ /dev/null @@ -1,735 +0,0 @@ -/* - * 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. - */ - -// Initial draft of my new cache system... -// Note it runs in 2 processes (using fork()), but doesn't require locking!! -// TODO: seeking, data consistency checking - -#define READ_SLEEP_TIME 10 -// These defines are used to reduce the cost of many successive -// seeks (e.g. when a file has no index) by spinning quickly at first. -#define INITIAL_FILL_USLEEP_TIME 1000 -#define INITIAL_FILL_USLEEP_COUNT 10 -#define FILL_USLEEP_TIME 50000 -#define PREFILL_SLEEP_TIME 200 -#define CONTROL_SLEEP_TIME 1 - -#include <stdio.h> -#include <stdlib.h> -#include <string.h> -#include <signal.h> -#include <sys/types.h> -#include <unistd.h> -#include <errno.h> - -#include <libavutil/common.h> - -#include "config.h" - -#include "osdep/shmem.h" -#include "osdep/timer.h" -#if defined(__MINGW32__) -#include <windows.h> -static void ThreadProc( void *s ); -#elif defined(PTHREAD_CACHE) -#include <pthread.h> -static void *ThreadProc(void *s); -#else -#include <sys/wait.h> -#define FORKED_CACHE 1 -#endif -#ifndef FORKED_CACHE -#define FORKED_CACHE 0 -#endif - -#include "core/mp_msg.h" - -#include "stream.h" -#include "cache2.h" -#include "core/mp_common.h" - -typedef struct { - // constats: - unsigned char *buffer; // base pointer of the allocated buffer memory - int64_t buffer_size; // size of the allocated buffer memory - int sector_size; // size of a single sector (2048/2324) - int64_t back_size; // we should keep back_size amount of old bytes for backward seek - int64_t fill_limit; // we should fill buffer only if space>=fill_limit - int64_t seek_limit; // keep filling cache if distance is less that seek limit -#if FORKED_CACHE - pid_t ppid; // parent PID to detect killed parent -#endif - // filler's pointers: - int eof; - int64_t min_filepos; // buffer contain only a part of the file, from min-max pos - int64_t max_filepos; - int64_t offset; // filepos <-> bufferpos offset value (filepos of the buffer's first byte) - // reader's pointers: - int64_t read_filepos; - // commands/locking: -// int seek_lock; // 1 if we will seek/reset buffer, 2 if we are ready for cmd -// int fifo_flag; // 1 if we should use FIFO to notice cache about buffer reads. - // callback - stream_t* stream; - volatile int control; - volatile uint64_t control_uint_arg; - volatile double control_double_arg; - volatile struct stream_lang_req control_lang_arg; - volatile int control_res; - volatile double stream_time_length; - volatile double stream_time_pos; - volatile double stream_start_time; - volatile int idle; -} cache_vars_t; - -static void cache_wakeup(stream_t *s) -{ -#if FORKED_CACHE - // signal process to wake up immediately - kill(s->cache_pid, SIGUSR1); -#endif -} - -static void cache_flush(cache_vars_t *s) -{ - s->offset= // FIXME!? - s->min_filepos=s->max_filepos=s->read_filepos; // drop cache content :( -} - -static int cache_read(cache_vars_t *s, unsigned char *buf, int size) -{ - int total=0; - int sleep_count = 0; - int64_t last_max = s->max_filepos; - while(size>0){ - int64_t pos,newb,len; - - //printf("CACHE2_READ: 0x%X <= 0x%X <= 0x%X \n",s->min_filepos,s->read_filepos,s->max_filepos); - - if(s->read_filepos>=s->max_filepos || s->read_filepos<s->min_filepos){ - // eof? - if(s->eof) break; - if (s->max_filepos == last_max) { - if (sleep_count++ == 10) - mp_msg(MSGT_CACHE, MSGL_WARN, "Cache empty, consider increasing -cache and/or -cache-min. [performance issue]\n"); - } else { - last_max = s->max_filepos; - sleep_count = 0; - } - // waiting for buffer fill... - if (stream_check_interrupt(READ_SLEEP_TIME)) { - s->eof = 1; - break; - } - continue; // try again... - } - sleep_count = 0; - - newb=s->max_filepos-s->read_filepos; // new bytes in the buffer - -// printf("*** newb: %d bytes ***\n",newb); - - pos=s->read_filepos - s->offset; - if(pos<0) pos+=s->buffer_size; else - if(pos>=s->buffer_size) pos-=s->buffer_size; - - if(newb>s->buffer_size-pos) newb=s->buffer_size-pos; // handle wrap... - if(newb>size) newb=size; - - // check: - if(s->read_filepos<s->min_filepos) mp_msg(MSGT_CACHE,MSGL_ERR,"Ehh. s->read_filepos<s->min_filepos !!! Report bug...\n"); - - // len=write(mem,newb) - //printf("Buffer read: %d bytes\n",newb); - memcpy(buf,&s->buffer[pos],newb); - buf+=newb; - len=newb; - // ... - - s->read_filepos+=len; - size-=len; - total+=len; - - } - return total; -} - -static int cache_fill(cache_vars_t *s) -{ - int64_t back,back2,newb,space,len,pos; - int64_t read=s->read_filepos; - int read_chunk; - int wraparound_copy = 0; - - if(read<s->min_filepos || read>s->max_filepos){ - // seek... - mp_msg(MSGT_CACHE,MSGL_DBG2,"Out of boundaries... seeking to 0x%"PRIX64" \n",read); - // drop cache contents only if seeking backward or too much fwd. - // This is also done for on-disk files, since it loses the backseek cache. - // That in turn can cause major bandwidth increase and performance - // issues with e.g. mov or badly interleaved files - if(read<s->min_filepos || read>=s->max_filepos+s->seek_limit) - { - cache_flush(s); - if(s->stream->eof) stream_reset(s->stream); - stream_seek_internal(s->stream,read); - mp_msg(MSGT_CACHE,MSGL_DBG2,"Seek done. new pos: 0x%"PRIX64" \n",(int64_t)stream_tell(s->stream)); - } - } - - // calc number of back-bytes: - back=read - s->min_filepos; - if(back<0) back=0; // strange... - if(back>s->back_size) back=s->back_size; - - // calc number of new bytes: - newb=s->max_filepos - read; - if(newb<0) newb=0; // strange... - - // calc free buffer space: - space=s->buffer_size - (newb+back); - - // calc bufferpos: - pos=s->max_filepos - s->offset; - if(pos>=s->buffer_size) pos-=s->buffer_size; // wrap-around - - if(space<s->fill_limit){ -// printf("Buffer is full (%d bytes free, limit: %d)\n",space,s->fill_limit); - return 0; // no fill... - } - -// printf("### read=0x%X back=%d newb=%d space=%d pos=%d\n",read,back,newb,space,pos); - - // try to avoid wrap-around. If not possible due to sector size - // do an extra copy. - if(space>s->buffer_size-pos) { - if (s->buffer_size-pos >= s->sector_size) { - space=s->buffer_size-pos; - } else { - space = s->sector_size; - wraparound_copy = 1; - } - } - - // limit one-time block size - read_chunk = s->stream->read_chunk; - if (!read_chunk) read_chunk = 4*s->sector_size; - space = FFMIN(space, read_chunk); - -#if 1 - // back+newb+space <= buffer_size - back2=s->buffer_size-(space+newb); // max back size - if(s->min_filepos<(read-back2)) s->min_filepos=read-back2; -#else - s->min_filepos=read-back; // avoid seeking-back to temp area... -#endif - - if (wraparound_copy) { - int to_copy; - len = stream_read_internal(s->stream, s->stream->buffer, space); - to_copy = FFMIN(len, s->buffer_size-pos); - memcpy(s->buffer + pos, s->stream->buffer, to_copy); - memcpy(s->buffer, s->stream->buffer + to_copy, len - to_copy); - } else - len = stream_read_internal(s->stream, &s->buffer[pos], space); - s->eof= !len; - - s->max_filepos+=len; - if(pos+len>=s->buffer_size){ - // wrap... - s->offset+=s->buffer_size; - } - - return len; - -} - -static int cache_execute_control(cache_vars_t *s) { - double double_res; - unsigned uint_res; - uint64_t uint64_res; - int needs_flush = 0; - static double last; - int quit = s->control == -2; - uint64_t old_pos = s->stream->pos; - int old_eof = s->stream->eof; - if (quit || !s->stream->control) { - s->stream_time_length = 0; - s->stream_time_pos = MP_NOPTS_VALUE; - s->control_res = STREAM_UNSUPPORTED; - s->control = -1; - return !quit; - } - if (mp_time_sec() - last > 0.099) { - double len, pos; - if (s->stream->control(s->stream, STREAM_CTRL_GET_TIME_LENGTH, &len) == STREAM_OK) - s->stream_time_length = len; - else - s->stream_time_length = 0; - if (s->stream->control(s->stream, STREAM_CTRL_GET_CURRENT_TIME, &pos) == STREAM_OK) - s->stream_time_pos = pos; - else - s->stream_time_pos = MP_NOPTS_VALUE; - if (s->stream->control(s->stream, STREAM_CTRL_GET_START_TIME, &pos) == STREAM_OK) - s->stream_start_time = pos; - else - s->stream_start_time = MP_NOPTS_VALUE; -#if FORKED_CACHE - // if parent PID changed, main process was killed -> exit - if (s->ppid != getppid()) { - mp_msg(MSGT_CACHE, MSGL_WARN, "Parent process disappeared, exiting cache process.\n"); - return 0; - } -#endif - last = mp_time_sec(); - } - if (s->control == -1) return 1; - switch (s->control) { - case STREAM_CTRL_SEEK_TO_TIME: - needs_flush = 1; - 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_res = s->control_double_arg; - s->control_res = s->stream->control(s->stream, s->control, &double_res); - s->control_double_arg = double_res; - break; - case STREAM_CTRL_SEEK_TO_CHAPTER: - case STREAM_CTRL_SET_ANGLE: - needs_flush = 1; - uint_res = s->control_uint_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_NUM_ANGLES: - case STREAM_CTRL_GET_ANGLE: - s->control_res = s->stream->control(s->stream, s->control, &uint_res); - s->control_uint_arg = uint_res; - break; - case STREAM_CTRL_GET_SIZE: - s->control_res = s->stream->control(s->stream, s->control, &uint64_res); - s->control_uint_arg = uint64_res; - break; - case STREAM_CTRL_GET_LANG: - s->control_res = s->stream->control(s->stream, s->control, (void *)&s->control_lang_arg); - break; - case STREAM_CTRL_MANAGES_TIMELINE: - s->control_res = s->stream->control(s->stream, s->control, NULL); - break; - default: - s->control_res = STREAM_UNSUPPORTED; - break; - } - if (s->control_res == STREAM_OK && needs_flush) { - s->read_filepos = s->stream->pos; - s->eof = s->stream->eof; - cache_flush(s); - } else if (needs_flush && - (old_pos != s->stream->pos || old_eof != s->stream->eof)) - mp_msg(MSGT_STREAM, MSGL_ERR, "STREAM_CTRL changed stream pos but returned error, this is not allowed!\n"); - s->control = -1; - return 1; -} - -static void *shared_alloc(int64_t size) { -#if FORKED_CACHE - return shmem_alloc(size); -#else - return malloc(size); -#endif -} - -static void shared_free(void *ptr, int64_t size) { -#if FORKED_CACHE - shmem_free(ptr, size); -#else - free(ptr); -#endif -} - -static cache_vars_t* cache_init(int64_t size,int sector){ - int64_t num; - cache_vars_t* s=shared_alloc(sizeof(cache_vars_t)); - if(s==NULL) return NULL; - - memset(s,0,sizeof(cache_vars_t)); - num=size/sector; - if(num < 32){ - num = 32; - }//64kb min_size - s->buffer_size=num*sector; - s->sector_size=sector; - s->buffer=shared_alloc(s->buffer_size); - - if(s->buffer == NULL){ - shared_free(s, sizeof(cache_vars_t)); - return NULL; - } - - s->fill_limit=8*sector; - s->back_size=s->buffer_size/2; -#if FORKED_CACHE - s->ppid = getpid(); -#endif - return s; -} - -void cache_uninit(stream_t *s) { - cache_vars_t* c = s->cache_data; - if(s->cache_pid) { -#if !FORKED_CACHE - cache_do_control(s, -2, NULL); -#else - kill(s->cache_pid,SIGKILL); - waitpid(s->cache_pid,NULL,0); -#endif - s->cache_pid = 0; - } - if(!c) return; - shared_free(c->buffer, c->buffer_size); - c->buffer = NULL; - c->stream = NULL; - shared_free(s->cache_data, sizeof(cache_vars_t)); - s->cache_data = NULL; -} - -#if FORKED_CACHE -static void exit_sighandler(int x){ - // close stream - exit(0); -} - -static void dummy_sighandler(int x) { -} -#endif - -/** - * Main loop of the cache process or thread. - */ -static void cache_mainloop(cache_vars_t *s) { - int sleep_count = 0; -#if FORKED_CACHE - struct sigaction sa = { .sa_handler = SIG_IGN }; - sigaction(SIGUSR1, &sa, NULL); -#endif - do { - if (!cache_fill(s)) { - s->idle = 1; -#if FORKED_CACHE - // Let signal wake us up, we cannot leave this - // enabled since we do not handle EINTR in most places. - // This might need extra code to work on BSD. - sa.sa_handler = dummy_sighandler; - sigaction(SIGUSR1, &sa, NULL); -#endif - if (sleep_count < INITIAL_FILL_USLEEP_COUNT) { - sleep_count++; - mp_sleep_us(INITIAL_FILL_USLEEP_TIME); - } else - mp_sleep_us(FILL_USLEEP_TIME); // idle -#if FORKED_CACHE - sa.sa_handler = SIG_IGN; - 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_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_MANAGES_TIMELINE: - break; - } - return s->control_res; -} |