139 lines
3.1 KiB
C
139 lines
3.1 KiB
C
#include <obs-module.h>
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#include <util/darray.h>
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#include <util/threading.h>
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#include <libavutil/log.h>
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static DARRAY(struct log_context {
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void *context;
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char str[4096];
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int print_prefix;
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} *) active_log_contexts;
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static DARRAY(struct log_context *) cached_log_contexts;
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pthread_mutex_t log_contexts_mutex = PTHREAD_MUTEX_INITIALIZER;
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static struct log_context *create_or_fetch_log_context(void *context)
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{
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pthread_mutex_lock(&log_contexts_mutex);
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for (size_t i = 0; i < active_log_contexts.num; i++) {
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if (context == active_log_contexts.array[i]->context) {
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pthread_mutex_unlock(&log_contexts_mutex);
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return active_log_contexts.array[i];
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}
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}
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struct log_context *new_log_context = NULL;
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size_t cnt = cached_log_contexts.num;
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if (!!cnt) {
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new_log_context = cached_log_contexts.array[cnt - 1];
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da_pop_back(cached_log_contexts);
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}
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if (!new_log_context)
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new_log_context = bzalloc(sizeof(struct log_context));
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new_log_context->context = context;
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new_log_context->str[0] = '\0';
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new_log_context->print_prefix = 1;
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da_push_back(active_log_contexts, &new_log_context);
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pthread_mutex_unlock(&log_contexts_mutex);
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return new_log_context;
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}
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static void destroy_log_context(struct log_context *log_context)
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{
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pthread_mutex_lock(&log_contexts_mutex);
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da_erase_item(active_log_contexts, &log_context);
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da_push_back(cached_log_contexts, &log_context);
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pthread_mutex_unlock(&log_contexts_mutex);
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}
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static void ffmpeg_log_callback(void *context, int level, const char *format,
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va_list args)
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{
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if (format == NULL)
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return;
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struct log_context *log_context = create_or_fetch_log_context(context);
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char *str = log_context->str;
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av_log_format_line(context, level, format, args, str + strlen(str),
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(int)(sizeof(log_context->str) - strlen(str)),
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&log_context->print_prefix);
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int obs_level;
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switch (level) {
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case AV_LOG_PANIC:
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case AV_LOG_FATAL:
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obs_level = LOG_ERROR;
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break;
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case AV_LOG_ERROR:
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case AV_LOG_WARNING:
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obs_level = LOG_WARNING;
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break;
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case AV_LOG_INFO:
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case AV_LOG_VERBOSE:
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obs_level = LOG_INFO;
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break;
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case AV_LOG_DEBUG:
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default:
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obs_level = LOG_DEBUG;
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}
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if (!log_context->print_prefix)
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return;
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char *str_end = str + strlen(str) - 1;
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while (str < str_end) {
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if (*str_end != '\n')
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break;
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*str_end-- = '\0';
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}
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if (str_end <= str)
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goto cleanup;
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blog(obs_level, "[ffmpeg] %s", str);
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cleanup:
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destroy_log_context(log_context);
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}
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static bool logging_initialized = false;
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void obs_ffmpeg_load_logging(void)
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{
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da_init(active_log_contexts);
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da_init(cached_log_contexts);
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if (pthread_mutex_init(&log_contexts_mutex, NULL) == 0) {
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av_log_set_callback(ffmpeg_log_callback);
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logging_initialized = true;
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}
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}
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void obs_ffmpeg_unload_logging(void)
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{
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if (!logging_initialized)
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return;
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logging_initialized = false;
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av_log_set_callback(av_log_default_callback);
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pthread_mutex_destroy(&log_contexts_mutex);
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for (size_t i = 0; i < active_log_contexts.num; i++) {
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bfree(active_log_contexts.array[i]);
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}
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for (size_t i = 0; i < cached_log_contexts.num; i++) {
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bfree(cached_log_contexts.array[i]);
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}
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da_free(active_log_contexts);
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da_free(cached_log_contexts);
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}
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