6c92cf5841
- Fill in the rest of the FFmpeg test output code for testing so it actually properly outputs data. - Improve the main video subsystem to be a bit more optimal and automatically output I420 or NV12 if needed. - Fix audio subsystem insertation and byte calculation. Now it will seamlessly insert new audio data in to the audio stream based upon its timestamp value. (Be extremely cautious when using floating point calculations for important things like this, and always round your values and check your values) - Use 32 byte alignment in case of future optimizations and export a function to get the current alignment. - Make os_sleepto_ns return true if slept, false if the time has already been passed before the call. - Fix sinewave output so that it actually properly calculates a middle C sinewave. - Change the use of row_bytes to linesize (also makes it a bit more consistent with FFmpeg's naming as well)
115 lines
2.6 KiB
C
115 lines
2.6 KiB
C
/*
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* Copyright (c) 2013 Hugh Bailey <obs.jim@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <errno.h>
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <dlfcn.h>
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#include <unistd.h>
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#include <time.h>
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#include "dstr.h"
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#include "platform.h"
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void *os_dlopen(const char *path)
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{
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struct dstr dylib_name;
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dstr_init_copy(&dylib_name, path);
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if (!dstr_find(&dylib_name, ".so"))
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dstr_cat(&dylib_name, ".so");
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void *res = dlopen(dylib_name.array, RTLD_LAZY);
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if (!res)
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blog(LOG_ERROR, "os_dlopen(%s->%s): %s\n",
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path, dylib_name.array, dlerror());
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dstr_free(&dylib_name);
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return res;
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}
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void *os_dlsym(void *module, const char *func)
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{
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return dlsym(module, func);
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}
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void os_dlclose(void *module)
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{
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dlclose(module);
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}
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bool os_sleepto_ns(uint64_t time_target)
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{
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uint64_t current = os_gettime_ns();
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if (time_target < current)
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return false;
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time_target -= current;
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struct timespec req, remain;
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memset(&req, 0, sizeof(req));
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memset(&remain, 0, sizeof(remain));
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req.tv_sec = time_target/1000000000;
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req.tv_nsec = time_target%1000000000;
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while (nanosleep(&req, &remain)) {
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req = remain;
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memset(&remain, 0, sizeof(remain));
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}
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return true;
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}
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void os_sleep_ms(uint32_t duration)
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{
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usleep(duration*1000);
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}
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uint64_t os_gettime_ns(void)
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{
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struct timespec ts;
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clock_gettime(CLOCK_MONOTONIC, &ts);
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return ((uint64_t) ts.tv_sec * 1000000000ULL + (uint64_t) ts.tv_nsec);
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}
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/* should return $HOME/.[name] */
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char *os_get_config_path(const char *name)
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{
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char *path_ptr = getenv("HOME");
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if (path_ptr == NULL)
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bcrash("Could not get $HOME\n");
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struct dstr path;
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dstr_init_copy(&path, path_ptr);
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dstr_cat(&path, "/.");
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dstr_cat(&path, name);
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return path.array;
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}
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bool os_file_exists(const char *path)
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{
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return access(path, F_OK) == 0;
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}
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int os_mkdir(const char *path)
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{
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int errorcode = mkdir(path, S_IRWXU);
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if (errorcode == 0)
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return MKDIR_SUCCESS;
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return (errno == EEXIST) ? MKDIR_EXISTS : MKDIR_ERROR;
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}
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