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raspi/avcodec_omx: various hacks to the state machine

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* fix invalid locking when for MSG_NEWCHANNEL
* fix restarting video decoder with proper omx teardown
This commit is contained in:
Stefan Seyfried
2013-10-20 01:05:30 +02:00
parent b424d34536
commit 2784941b7e
1 changed files with 7 additions and 4 deletions
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11
raspi/avcodec_omx.c
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@@ -50,6 +50,7 @@ static void* acodec_omx_thread(struct codec_init_args_t* args)
fprintf(stderr,"Starting acodec_omx_thread\n");
new_channel:
codec->first_packet = 1;
while(1)
{
next_packet:
@@ -60,11 +61,10 @@ next_packet:
//fprintf(stderr,"[acodec] - waiting for omx_active_mutex\n");
pthread_mutex_lock(&pi->omx_active_mutex);
//fprintf(stderr,"[acodec] - got omx_active_mutex\n");
while (!pi->omx_active) {
while (pi->omx_active != 1) {
pthread_cond_wait(&pi->omx_active_cv, &pi->omx_active_mutex);
//fprintf(stderr,"[acodec] - omx_active=%d\n",pi->omx_active);
}
if (is_paused) {
// Wait for resume message
fprintf(stderr,"acodec: Waiting for resume\n");
@@ -77,6 +77,7 @@ next_packet:
if (current->msgtype == MSG_STOP) {
printf("[acodec] Stopping\n");
codec_queue_free_item(codec,current);
pi->omx_active = 2; /* 2 == restarting, allows the vcodec to cleanly shutdown and restart */
pthread_mutex_unlock(&pi->omx_active_mutex);
goto new_channel;
} else if (current->msgtype == MSG_NEW_CHANNEL) {
@@ -115,6 +116,7 @@ next_packet:
} else {
memcpy(buf->pBuffer, current->data->packet, current->data->packetlength);
buf->nFilledLen = current->data->packetlength;
res = 0;
}
@@ -222,8 +224,8 @@ next_packet:
goto stop;
} else {
fprintf(stderr,"[vcodec] NEW_CHANNEL received, pipeline not active\n");
pthread_mutex_unlock(&pi->omx_active_mutex);
fprintf(stderr,"[vcodec] unlocked omx_active_mutex\n");
/// pthread_mutex_unlock(&pi->omx_active_mutex); /* next_channel wants the mutex already locked */
/// fprintf(stderr,"[vcodec] unlocked omx_active_mutex\n");
goto next_channel;
}
} else if (current->msgtype == MSG_PAUSE) {
@@ -320,6 +322,7 @@ next_packet:
height = codec->height;
fprintf(stderr,"Initialised video codec - %s width=%d, height=%d\n",((coding == OMX_VIDEO_CodingAVC) ? "H264" : "MPEG-2"), width, height);
codec->acodec->first_packet = 1;
codec->acodec->is_running = 1; /* hack, this makes avdec.cpp start feeding PCM data */
/* We are ready to go, allow the audio codec back in */
pi->omx_active = 1;