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/*****************************************************************
* gmerlin-avdecoder - a general purpose multimedia decoding library
*
* Copyright (c) 2001 - 2024 Members of the Gmerlin project
* http://github.com/bplaum
*
* This program 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.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
* *****************************************************************/
#include <avdec_private.h>
#include <pthread.h>
#include <semaphore.h>
#include <stdio.h>
#include "libw32dll/wine/ldt_keeper.h"
#include <win32codec.h>
/* Due to lots of crashes, the win32 codecs are now in a private thread */
#define STATE_NORMAL 0
#define STATE_QUIT 1
#define STATE_ERROR 2
static void * win32_thread(void * data)
{
bgav_win32_thread_t * t;
t = data;
t->ldt_fs = Setup_LDT_Keeper();
/* Initialize codec */
if(!t->init(t))
{
t->state = STATE_ERROR;
Restore_LDT_Keeper(t->ldt_fs);
sem_post(&t->output_ready);
return NULL;
}
/* Tell, that we have initialized */
sem_post(&t->output_ready);
Check_FS_Segment();
/* Go into the decode loop */
while(1)
{
/* Wait for input semaphore */
sem_wait(&t->input_ready);
if(t->state == STATE_NORMAL)
{
/* Decode */
if(!t->keyframe_seen)
{
if(t->keyframe)
t->keyframe_seen = 1;
else
{
sem_post(&t->output_ready);
if(t->video_frame)
gavl_video_frame_clear(t->video_frame, &t->s->data.video.format);
continue;
}
}
if(!t->decode(t))
t->state = STATE_ERROR;
sem_post(&t->output_ready);
}
else
break;
}
Restore_LDT_Keeper(t->ldt_fs);
return NULL;
}
int bgav_win32_codec_thread_init(bgav_win32_thread_t * t,bgav_stream_t*s)
{
t->s = s;
sem_init(&t->input_ready, 0, 0);
sem_init(&t->output_ready, 0, 0);
pthread_create(&t->thread, NULL, win32_thread, t);
/* Wait until we have the stream format */
sem_wait(&t->output_ready);
if(t->state != STATE_NORMAL)
return 0;
else
return 1;
}
static int decode_common(bgav_win32_thread_t * t,
uint8_t * data,
int data_len)
{
t->data = data;
t->data_len = data_len;
sem_post(&t->input_ready);
sem_wait(&t->output_ready);
if(t->state != STATE_NORMAL)
return 0;
else
return 1;
}
int bgav_win32_codec_thread_decode_audio(bgav_win32_thread_t * t,
gavl_audio_frame_t * f,
uint8_t * data,
int data_len)
{
t->audio_frame = f;
return decode_common(t, data, data_len);
}
int bgav_win32_codec_thread_decode_video(bgav_win32_thread_t * t,
gavl_video_frame_t * f,
uint8_t * data,
int data_len, int keyframe)
{
t->video_frame = f;
t->keyframe = keyframe;
return decode_common(t, data, data_len);
}
void bgav_win32_codec_thread_cleanup(bgav_win32_thread_t * t)
{
t->state = STATE_QUIT;
pthread_join(t->thread, NULL);
}
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