int Private_Impl_Still::startCapture() {
// If the parameters were changed and this function wasn't called, it will be called here
// However if the parameters weren't changed, the function won't do anything - it will return right away
commitParameters();
if ( encoder_output_port->is_enabled ) {
cout << API_NAME << ": Could not enable encoder output port. Try waiting longer before attempting to take another picture.\n";
return -1;
}
if ( mmal_port_enable ( encoder_output_port, buffer_callback ) != MMAL_SUCCESS ) {
cout << API_NAME << ": Could not enable encoder output port.\n";
return -1;
}
int num = mmal_queue_length ( encoder_pool->queue );
for ( int b = 0; b < num; b++ ) {
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get ( encoder_pool->queue );
if ( !buffer )
cout << API_NAME << ": Could not get buffer (#" << b << ") from pool queue.\n";
if ( mmal_port_send_buffer ( encoder_output_port, buffer ) != MMAL_SUCCESS )
cout << API_NAME << ": Could not send a buffer (#" << b << ") to encoder output port.\n";
}
if ( mmal_port_parameter_set_boolean ( camera_still_port, MMAL_PARAMETER_CAPTURE, 1 ) != MMAL_SUCCESS ) {
cout << API_NAME << ": Failed to start capture.\n";
return -1;
}
return 0;
}
/**After setting parameters video port is initialized with empty buffers
*/
bool Private_Impl::startCapture() {
if ( !_isOpened ) {
cerr << __FILE__ << ":" << __LINE__ << ":" << __func__ << " not opened." << endl;
return false; //already opened
}
// start capture
if ( mmal_port_parameter_set_boolean ( camera_video_port, MMAL_PARAMETER_CAPTURE, 1 ) != MMAL_SUCCESS ) {
release();
return false;
}
// Send all the buffers to the video port
int num = mmal_queue_length ( State.video_pool->queue );
int q;
for ( q = 0; q < num; q++ ) {
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get ( State.video_pool->queue );
if ( !buffer )
cerr << "Unable to get a required buffer" << q << " from pool queue" << endl;
if ( mmal_port_send_buffer ( camera_video_port, buffer ) != MMAL_SUCCESS )
cerr << "Unable to send a buffer to encoder output port " << q << endl;
}
_isCapturing = true;
return true;
}
bool CMMALVideo::SendCodecConfigData()
{
MMAL_STATUS_T status;
if (!m_dec_input_pool)
return true;
// send code config data
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_timedwait(m_dec_input_pool->queue, 500);
if (!buffer)
{
CLog::Log(LOGERROR, "%s::%s - mmal_queue_get failed", CLASSNAME, __func__);
return false;
}
mmal_buffer_header_reset(buffer);
buffer->cmd = 0;
buffer->length = std::min(m_hints.extrasize, buffer->alloc_size);
memcpy(buffer->data, m_hints.extradata, buffer->length);
buffer->flags |= MMAL_BUFFER_HEADER_FLAG_FRAME_END | MMAL_BUFFER_HEADER_FLAG_CONFIG;
if (g_advancedSettings.CanLogComponent(LOGVIDEO))
CLog::Log(LOGDEBUG, "%s::%s - %-8p %-6d flags:%x", CLASSNAME, __func__, buffer, buffer->length, buffer->flags);
status = mmal_port_send_buffer(m_dec_input, buffer);
if (status != MMAL_SUCCESS)
{
CLog::Log(LOGERROR, "%s::%s Failed send buffer to decoder input port (status=%x %s)", CLASSNAME, __func__, status, mmal_status_to_string(status));
return false;
}
return true;
}
void take_frame( char * dump_pointer )
{
gCallback_data.data_dump = dump_pointer;
int num = mmal_queue_length(gState.camera_pool->queue);
int q;
for (q=0;q<num;q++)
{
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get(gState.camera_pool->queue);
if (!buffer)
vcos_log_error("Unable to get a required buffer %d from pool queue", q);
if (mmal_port_send_buffer(gCamera_still_port, buffer)!= MMAL_SUCCESS)
vcos_log_error("Unable to send a buffer to camera output port (%d)", q);
}
if (mmal_port_parameter_set_boolean(gCamera_still_port, MMAL_PARAMETER_CAPTURE, 1) != MMAL_SUCCESS)
{
vcos_log_error("%s: Failed to start capture", __func__);
}
else
{
vcos_semaphore_wait(&gCallback_data.complete_semaphore);
}
}
void CCameraOutput::OnVideoBufferCallback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
//to handle the user not reading frames, remove and return any pre-existing ones
if(mmal_queue_length(OutputQueue)>=2)
{
if(MMAL_BUFFER_HEADER_T* existing_buffer = mmal_queue_get(OutputQueue))
{
mmal_buffer_header_release(existing_buffer);
if (port->is_enabled)
{
MMAL_STATUS_T status;
MMAL_BUFFER_HEADER_T *new_buffer;
new_buffer = mmal_queue_get(BufferPool->queue);
if (new_buffer)
status = mmal_port_send_buffer(port, new_buffer);
if (!new_buffer || status != MMAL_SUCCESS)
printf("Unable to return a buffer to the video port\n");
}
}
}
//add the buffer to the output queue
mmal_queue_put(OutputQueue,buffer);
//printf("Video buffer callback, output queue len=%d\n", mmal_queue_length(OutputQueue));
}
static void encoder_output_buffer_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer) {
MMAL_BUFFER_HEADER_T *new_buffer;
PORT_USERDATA *userdata = (PORT_USERDATA *) port->userdata;
MMAL_POOL_T *pool = userdata->encoder_output_pool;
//fprintf(stderr, "INFO:%s\n", __func__);
mmal_buffer_header_mem_lock(buffer);
fwrite(buffer->data, 1, buffer->length, stdout);
mmal_buffer_header_mem_unlock(buffer);
mmal_buffer_header_release(buffer);
if (port->is_enabled) {
MMAL_STATUS_T status;
new_buffer = mmal_queue_get(pool->queue);
if (new_buffer) {
status = mmal_port_send_buffer(port, new_buffer);
}
if (!new_buffer || status != MMAL_SUCCESS) {
fprintf(stderr, "Unable to return a buffer to the video port\n");
}
}
}
/** Populate an output port with a pool of buffers */
static MMAL_STATUS_T mmal_port_populate_from_pool(MMAL_PORT_T* port, MMAL_POOL_T* pool)
{
MMAL_STATUS_T status = MMAL_SUCCESS;
uint32_t buffer_idx;
MMAL_BUFFER_HEADER_T *buffer;
if (!port->priv->pf_send)
return MMAL_ENOSYS;
LOG_TRACE("%s port %p, pool: %p", port->name, port, pool);
/* Populate port from pool */
for (buffer_idx = 0; buffer_idx < port->buffer_num; buffer_idx++)
{
buffer = mmal_queue_get(pool->queue);
if (!buffer)
{
LOG_ERROR("too few buffers in the pool");
status = MMAL_ENOMEM;
break;
}
status = mmal_port_send_buffer(port, buffer);
if (status != MMAL_SUCCESS)
{
LOG_ERROR("failed to send buffer to port");
mmal_buffer_header_release(buffer);
break;
}
}
return status;
}
int start_capture(RASPIVID_STATE *state) {
if (!(state->isInit)) init_cam(state);
//raspicamcontrol_set_flips(state->camera_component, state->camera_parameters.hflip, state->camera_parameters.vflip);
raspicamcontrol_set_flips(state->camera_component, hflip, vflip);
MMAL_PORT_T *camera_video_port = state->camera_component->output[MMAL_CAMERA_VIDEO_PORT];
//MMAL_PORT_T *encoder_output_port = state->encoder_component->output[0];
ROS_INFO("Starting video capture (%d, %d, %d, %d)\n", state->width, state->height, state->quality, state->framerate);
if (mmal_port_parameter_set_boolean(camera_video_port, MMAL_PARAMETER_CAPTURE, 1) != MMAL_SUCCESS) {
return 1;
}
// Send all the buffers to the video port
{
int num = mmal_queue_length(state->camera_pool->queue);
int q;
for (q=0; q < num; q++) {
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get(state->camera_pool->queue);
if (!buffer)
vcos_log_error("Unable to get a required buffer %d from pool queue", q);
//if (mmal_port_send_buffer(encoder_output_port, buffer)!= MMAL_SUCCESS)
if (mmal_port_send_buffer(camera_video_port, buffer)!= MMAL_SUCCESS)
vcos_log_error("Unable to send a buffer to encoder output port (%d)", q);
}
}
ROS_INFO("Video capture started\n");
return 0;
}
/**
* buffer header callback function for encoder
*
* Callback will dump buffer data to the specific file
*
* @param port Pointer to port from which callback originated
* @param buffer mmal buffer header pointer
*/
static void encoder_buffer_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
int complete = 0;
// We pass our file handle and other stuff in via the userdata field.
PORT_USERDATA *pData = (PORT_USERDATA *)port->userdata;
if (pData)
{
int bytes_written = buffer->length;
if (buffer->length && pData->file_handle)
{
mmal_buffer_header_mem_lock(buffer);
bytes_written = fwrite(buffer->data, 1, buffer->length, pData->file_handle);
mmal_buffer_header_mem_unlock(buffer);
}
// We need to check we wrote what we wanted - it's possible we have run out of storage.
if (bytes_written != buffer->length)
{
vcos_log_error("Unable to write buffer to file - aborting");
complete = 1;
}
// Now flag if we have completed
if (buffer->flags & (MMAL_BUFFER_HEADER_FLAG_FRAME_END | MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED))
complete = 1;
}
else
{
vcos_log_error("Received a encoder buffer callback with no state");
}
// release buffer back to the pool
mmal_buffer_header_release(buffer);
// and send one back to the port (if still open)
if (port->is_enabled)
{
MMAL_STATUS_T status;
MMAL_BUFFER_HEADER_T *new_buffer;
new_buffer = mmal_queue_get(pData->pstate->encoder_pool->queue);
if (new_buffer)
{
status = mmal_port_send_buffer(port, new_buffer);
}
if (!new_buffer || status != MMAL_SUCCESS)
vcos_log_error("Unable to return a buffer to the encoder port");
}
if (complete)
vcos_semaphore_post(&(pData->complete_semaphore));
}
/* This will output a frame that can be used for OpenCV */
IplImage* cvQueryRPiFrame(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
MMAL_BUFFER_HEADER_T *new_buffer;
PORT_USERDATA *pData = (PORT_USERDATA *)port->userdata;
if (pData)
{
if (buffer->length)
{
/*Convert buffer to RGB IplImage*/
mmal_buffer_header_mem_lock(buffer);
int w=pData->pstate->width; // get image size
int h=pData->pstate->height;
int h4=h/4;
memcpy(yCSI_CAM->imageData,buffer->data,w*h);
memcpy(uCSI_CAM->imageData,buffer->data+w*h,w*h4);
memcpy(vCSI_CAM->imageData,buffer->data+w*h+w*h4,w*h4);
cvResize(uCSI_CAM, uCSI_CAM_BIG, CV_INTER_NN);
cvResize(vCSI_CAM, vCSI_CAM_BIG, CV_INTER_NN); //CV_INTER_LINEAR looks better but it's slower
cvMerge(yCSI_CAM, uCSI_CAM_BIG, vCSI_CAM_BIG, NULL, CSI_CAM_IMAGE);
cvCvtColor(CSI_CAM_IMAGE,CSI_CAM_DSTIMAGE,CV_YCrCb2RGB); // convert in RGB color space (slow)
mmal_buffer_header_mem_unlock(buffer);
}
else
{
vcos_log_error("buffer null");
}
}
else
{
vcos_log_error("Received a encoder buffer callback with no state");
}
// release buffer back to the pool
mmal_buffer_header_release(buffer);
// and send one back to the port (if still open)
if (port->is_enabled)
{
MMAL_STATUS_T status;
new_buffer = mmal_queue_get(pData->pstate->video_pool->queue);
if (new_buffer)
status = mmal_port_send_buffer(port, new_buffer);
if (!new_buffer || status != MMAL_SUCCESS)
vcos_log_error("Unable to return a buffer to the encoder port");
}
return CSI_CAM_DSTIMAGE;
}
/* This is a camera path endpoint callback setup for GPU encoder data
| to the ARM. The callback should handle final disposition of encoder data.
*/
boolean
out_port_callback(CameraObject *obj, int port_num, void callback())
{
MMAL_PORT_T *port;
MMAL_STATUS_T status;
char *msg = "mmal_port_enable";
int i, n;
if (!obj->component)
return FALSE;
port = obj->component->output[port_num];
/* Create an initial queue of buffers for the output port.
| FIXME? Can't handle callbacks for more than one splitter port
| because I only have one pool_out per component.
*/
if (!obj->pool_out)
{
if ((obj->pool_out = mmal_port_pool_create(port,
port->buffer_num, port->buffer_size)) == NULL)
{
log_printf("out_port_callback %s: mmal_port_pool_create failed.\n",
obj->name);
return FALSE;
}
}
/* Connect the callback and initialize buffer pool of data that will
| be sent to the callback.
*/
if ((status = mmal_port_enable(port, callback)) == MMAL_SUCCESS)
{
obj->port_out = port;
port->userdata = (struct MMAL_PORT_USERDATA_T *) obj;
/* Send all buffers in the created queue to the GPU output port.
| These buffers will then be delivered back to the ARM with filled
| GPU data via the above callback where we can process the data
| and then resend the buffer back to the port to be refilled.
*/
msg = "mmal_port_send_buffer";
n = mmal_queue_length(obj->pool_out->queue);
for (i = 0; i < n; ++i)
{
status = mmal_port_send_buffer(port,
mmal_queue_get(obj->pool_out->queue));
if (status != MMAL_SUCCESS)
break;
}
}
if (status != MMAL_SUCCESS)
{
log_printf("out_port_callback %s: %s failed. Status %s\n",
obj->name, msg, mmal_status[status]);
return FALSE;
}
return TRUE;
}
static picture_t *deinterlace(filter_t *filter, picture_t *picture)
{
filter_sys_t *sys = filter->p_sys;
MMAL_BUFFER_HEADER_T *buffer;
picture_t *out_picture = NULL;
picture_t *ret = NULL;
MMAL_STATUS_T status;
unsigned i = 0;
fill_output_port(filter);
buffer = picture->p_sys->buffer;
buffer->user_data = picture;
buffer->pts = picture->date;
buffer->cmd = 0;
if (!picture->p_sys->displayed) {
vlc_mutex_lock(&sys->buffer_cond_mutex);
status = mmal_port_send_buffer(sys->input, buffer);
if (status != MMAL_SUCCESS) {
msg_Err(filter, "Failed to send buffer to input port (status=%"PRIx32" %s)",
status, mmal_status_to_string(status));
picture_Release(picture);
} else {
picture->p_sys->displayed = true;
atomic_fetch_add(&sys->input_in_transit, 1);
vlc_cond_signal(&sys->buffer_cond);
}
vlc_mutex_unlock(&sys->buffer_cond_mutex);
} else {
picture_Release(picture);
}
/*
* Send output buffers
*/
while(atomic_load(&sys->started) && i < 2) {
if (buffer = mmal_queue_timedwait(sys->filtered_pictures, 2000)) {
i++;
if (!out_picture) {
out_picture = (picture_t *)buffer->user_data;
ret = out_picture;
} else {
out_picture->p_next = (picture_t *)buffer->user_data;
out_picture = out_picture->p_next;
}
out_picture->date = buffer->pts;
} else {
msg_Dbg(filter, "Failed waiting for filtered picture");
break;
}
}
if (out_picture)
out_picture->p_next = NULL;
return ret;
}
/**
* buffer header callback function for video
*
* @param port Pointer to port from which callback originated
* @param buffer mmal buffer header pointer
*/
static void video_buffer_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
MMAL_BUFFER_HEADER_T *new_buffer;
RASPIVID_STATE * state = (RASPIVID_STATE *)port->userdata;
if (state)
{
if (state->finished) {
vcos_semaphore_post(&state->capture_done_sem);
return;
}
if (buffer->length)
{
mmal_buffer_header_mem_lock(buffer);
//
// *** PR : OPEN CV Stuff here !
//
int w=state->width; // get image size
int h=state->height;
int pixelSize = state->monochrome ? 1 : 3;
memcpy(state->dstImage->imageData,buffer->data,w*h*pixelSize);
vcos_semaphore_post(&state->capture_done_sem);
vcos_semaphore_wait(&state->capture_sem);
mmal_buffer_header_mem_unlock(buffer);
}
else
{
vcos_log_error("buffer null");
}
}
else
{
vcos_log_error("Received a encoder buffer callback with no state");
}
// release buffer back to the pool
mmal_buffer_header_release(buffer);
// and send one back to the port (if still open)
if (port->is_enabled)
{
MMAL_STATUS_T status;
new_buffer = mmal_queue_get(state->video_pool->queue);
if (new_buffer)
status = mmal_port_send_buffer(port, new_buffer);
if (!new_buffer || status != MMAL_SUCCESS)
vcos_log_error("Unable to return a buffer to the encoder port");
}
}
/**
* buffer header callback function for camera output port
*
* Callback will dump buffer data to the specific file
*
* @param port Pointer to port from which callback originated
* @param buffer mmal buffer header pointer
*/
static void camera_buffer_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
int complete = 0;
// We pass our file handle and other stuff in via the userdata field.
PORT_USERDATA *pData = (PORT_USERDATA *)port->userdata;
if (pData)
{
if (buffer->length)
{
mmal_buffer_header_mem_lock(buffer);
int i;
for( i = 0; i < buffer->length; i++ )
pData->data_dump[i] = buffer->data[i];
mmal_buffer_header_mem_unlock(buffer);
}
// Check end of frame or error
if (buffer->flags & (MMAL_BUFFER_HEADER_FLAG_FRAME_END | MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED))
complete = 1;
}
else
{
vcos_log_error("Received a camera still buffer callback with no state");
}
// release buffer back to the pool
mmal_buffer_header_release(buffer);
// and send one back to the port (if still open)
if (port->is_enabled)
{
MMAL_STATUS_T status;
MMAL_BUFFER_HEADER_T *new_buffer = mmal_queue_get(pData->pstate->camera_pool->queue);
// and back to the port from there.
if (new_buffer)
{
status = mmal_port_send_buffer(port, new_buffer);
}
if (!new_buffer || status != MMAL_SUCCESS)
vcos_log_error("Unable to return the buffer to the camera still port");
}
if (complete)
{
vcos_semaphore_post(&(pData->complete_semaphore));
}
}
MMAL_POOL_T* CCameraOutput::EnablePortCallbackAndCreateBufferPool(MMAL_PORT_T* port, MMAL_PORT_BH_CB_T cb, int buffer_count)
{
MMAL_STATUS_T status;
MMAL_POOL_T* buffer_pool = 0;
//setup video port buffer and a pool to hold them
port->buffer_num = buffer_count;
port->buffer_size = port->buffer_size_recommended;
printf("Creating pool with %d buffers of size %d\n", port->buffer_num, port->buffer_size);
buffer_pool = mmal_port_pool_create(port, port->buffer_num, port->buffer_size);
if (!buffer_pool)
{
printf("Couldn't create video buffer pool\n");
goto error;
}
//enable the port and hand it the callback
port->userdata = (struct MMAL_PORT_USERDATA_T *)this;
status = mmal_port_enable(port, cb);
if (status != MMAL_SUCCESS)
{
printf("Failed to set video buffer callback\n");
goto error;
}
//send all the buffers in our pool to the video port ready for use
{
int num = mmal_queue_length(buffer_pool->queue);
int q;
for (q=0;q<num;q++)
{
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get(buffer_pool->queue);
if (!buffer)
{
printf("Unable to get a required buffer %d from pool queue\n", q);
goto error;
}
else if (mmal_port_send_buffer(port, buffer)!= MMAL_SUCCESS)
{
printf("Unable to send a buffer to port (%d)\n", q);
goto error;
}
}
}
return buffer_pool;
error:
if(buffer_pool)
mmal_port_pool_destroy(port,buffer_pool);
return NULL;
}
void consume_queue_on_connection(MMAL_PORT_T *port, MMAL_QUEUE_T *queue)
{
MMAL_BUFFER_HEADER_T *buffer;
while ((buffer = mmal_queue_get(queue)) != NULL)
{
if (mmal_port_send_buffer(port, buffer) != MMAL_SUCCESS)
{
mmal_queue_put_back(queue, buffer);
break;
}
}
}
/**
* buffer header callback function for encoder
*
* Callback will dump buffer data to the specific file
*
* @param port Pointer to port from which callback originated
* @param buffer mmal buffer header pointer
*/
static void encoder_buffer_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
MMAL_BUFFER_HEADER_T *new_buffer;
// We pass our file handle and other stuff in via the userdata field.
PORT_USERDATA *pData = (PORT_USERDATA *)port->userdata;
if (pData)
{
int bytes_written = buffer->length;
vcos_assert(pData->file_handle);
if (buffer->length)
{
mmal_buffer_header_mem_lock(buffer);
bytes_written = fwrite(buffer->data, 1, buffer->length, pData->file_handle);
mmal_buffer_header_mem_unlock(buffer);
}
if (bytes_written != buffer->length)
{
vcos_log_error("Failed to write buffer data (%d from %d)- aborting", bytes_written, buffer->length);
pData->abort = 1;
}
}
else
{
vcos_log_error("Received a encoder buffer callback with no state");
}
// release buffer back to the pool
mmal_buffer_header_release(buffer);
// and send one back to the port (if still open)
if (port->is_enabled)
{
MMAL_STATUS_T status;
new_buffer = mmal_queue_get(pData->pstate->encoder_pool->queue);
if (new_buffer)
status = mmal_port_send_buffer(port, new_buffer);
if (!new_buffer || status != MMAL_SUCCESS)
vcos_log_error("Unable to return a buffer to the encoder port");
}
}
static void vd_display(vout_display_t *vd, picture_t *picture,
subpicture_t *subpicture)
{
vout_display_sys_t *sys = vd->sys;
picture_sys_t *pic_sys = picture->p_sys;
MMAL_BUFFER_HEADER_T *buffer = pic_sys->buffer;
MMAL_STATUS_T status;
if (picture->format.i_frame_rate != sys->i_frame_rate ||
picture->format.i_frame_rate_base != sys->i_frame_rate_base ||
picture->b_progressive != sys->b_progressive ||
picture->b_top_field_first != sys->b_top_field_first) {
sys->b_top_field_first = picture->b_top_field_first;
sys->b_progressive = picture->b_progressive;
sys->i_frame_rate = picture->format.i_frame_rate;
sys->i_frame_rate_base = picture->format.i_frame_rate_base;
configure_display(vd, NULL, &picture->format);
}
if (!pic_sys->displayed || !sys->opaque) {
buffer->cmd = 0;
buffer->length = sys->input->buffer_size;
vlc_mutex_lock(&sys->buffer_mutex);
while (sys->buffers_in_transit >= MAX_BUFFERS_IN_TRANSIT)
vlc_cond_wait(&sys->buffer_cond, &sys->buffer_mutex);
status = mmal_port_send_buffer(sys->input, buffer);
if (status == MMAL_SUCCESS)
++sys->buffers_in_transit;
vlc_mutex_unlock(&sys->buffer_mutex);
if (status != MMAL_SUCCESS) {
msg_Err(vd, "Failed to send buffer to input port. Frame dropped");
picture_Release(picture);
}
pic_sys->displayed = true;
} else {
picture_Release(picture);
}
display_subpicture(vd, subpicture);
if (subpicture)
subpicture_Delete(subpicture);
if (sys->next_phase_check == 0 && sys->adjust_refresh_rate)
maintain_phase_sync(vd);
sys->next_phase_check = (sys->next_phase_check + 1) % PHASE_CHECK_INTERVAL;
}
static void jpegencoder_buffer_callback (MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer) {
int bytes_written = buffer->length;
char *filename_temp, *filename_temp2;
if(mjpeg_cnt == 0) {
if(!jpegoutput_file) {
asprintf(&filename_temp, jpeg_filename, image_cnt);
asprintf(&filename_temp2, "%s.part", filename_temp);
jpegoutput_file = fopen(filename_temp2, "wb");
free(filename_temp);
free(filename_temp2);
if(!jpegoutput_file) error("Could not open mjpeg-destination");
}
if(buffer->length) {
mmal_buffer_header_mem_lock(buffer);
bytes_written = fwrite(buffer->data, 1, buffer->length, jpegoutput_file);
mmal_buffer_header_mem_unlock(buffer);
}
if(bytes_written != buffer->length) error("Could not write all bytes");
}
if(buffer->flags & MMAL_BUFFER_HEADER_FLAG_FRAME_END) {
mjpeg_cnt++;
if(mjpeg_cnt == divider) {
fclose(jpegoutput_file);
jpegoutput_file = NULL;
asprintf(&filename_temp, jpeg_filename, image_cnt);
asprintf(&filename_temp2, "%s.part", filename_temp);
rename(filename_temp2, filename_temp);
free(filename_temp);
free(filename_temp2);
image_cnt++;
mjpeg_cnt = 0;
}
}
mmal_buffer_header_release(buffer);
if (port->is_enabled) {
MMAL_STATUS_T status = MMAL_SUCCESS;
MMAL_BUFFER_HEADER_T *new_buffer;
new_buffer = mmal_queue_get(pool_jpegencoder->queue);
if (new_buffer) status = mmal_port_send_buffer(port, new_buffer);
if (!new_buffer || status != MMAL_SUCCESS) error("Could not send buffers to port");
}
}
/** Populate clock ports from the given pool */
static MMAL_STATUS_T mmal_port_populate_clock_ports(MMAL_PORT_T* output, MMAL_PORT_T* input, MMAL_POOL_T* pool)
{
MMAL_STATUS_T status = MMAL_SUCCESS;
MMAL_BUFFER_HEADER_T *buffer;
if (!output->priv->pf_send || !input->priv->pf_send)
return MMAL_ENOSYS;
LOG_TRACE("output %s %p, input %s %p, pool: %p", output->name, output, input->name, input, pool);
buffer = mmal_queue_get(pool->queue);
while (buffer)
{
status = mmal_port_send_buffer(output, buffer);
if (status != MMAL_SUCCESS)
{
LOG_ERROR("failed to send buffer to clock port %s", output->name);
mmal_buffer_header_release(buffer);
break;
}
buffer = mmal_queue_get(pool->queue);
if (buffer)
{
status = mmal_port_send_buffer(input, buffer);
if (status != MMAL_SUCCESS)
{
LOG_ERROR("failed to send buffer to clock port %s", output->name);
mmal_buffer_header_release(buffer);
break;
}
buffer = mmal_queue_get(pool->queue);
}
}
return status;
}
void Private_Impl::video_buffer_callback ( MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer ) {
MMAL_BUFFER_HEADER_T *new_buffer;
PORT_USERDATA *pData = ( PORT_USERDATA * ) port->userdata;
bool hasGrabbed = false;
//pData->_mutex.lock();
std::unique_lock<std::mutex> lck ( pData->_mutex );
if ( pData ) {
if ( pData->wantToGrab && buffer->length ) {
mmal_buffer_header_mem_lock ( buffer );
//printf("pdata buff length%d\n",pData->_buffData.size);
pData->_buffData.resize ( buffer->length );
memcpy ( pData->_buffData.data, buffer->data, buffer->length );
pData->npts = buffer->pts;
//tst=buffer->pts;
pData->wantToGrab = false;
hasGrabbed = true;
mmal_buffer_header_mem_unlock ( buffer );
}
}
//pData->_mutex.unlock();
// if ( hasGrabbed ) pData->Thcond.BroadCast(); //wake up waiting client
// release buffer back to the pool
mmal_buffer_header_release ( buffer );
// and send one back to the port (if still open)
if ( port->is_enabled ) {
MMAL_STATUS_T status;
new_buffer = mmal_queue_get ( pData->pstate->video_pool->queue );
if ( new_buffer ) {}
status = mmal_port_send_buffer ( port, new_buffer );
if ( !new_buffer || status != MMAL_SUCCESS )
printf ( "Unable to return a buffer to the encoder port\n" );
}
if ( pData->pstate->shutterSpeed != 0 )
mmal_port_parameter_set_uint32 ( pData->pstate->camera_component->control, MMAL_PARAMETER_SHUTTER_SPEED, pData->pstate->shutterSpeed ) ;
if ( hasGrabbed ) pData->Thcond.BroadCast(); //wake up waiting client
}
int fill_port_buffer(MMAL_PORT_T *port, MMAL_POOL_T *pool) {
int q;
int num = mmal_queue_length(pool->queue);
for (q = 0; q < num; q++) {
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get(pool->queue);
if (!buffer) {
fprintf(stderr, "Unable to get a required buffer %d from pool queue\n", q);
}
if (mmal_port_send_buffer(port, buffer) != MMAL_SUCCESS) {
fprintf(stderr, "Unable to send a buffer to port (%d)\n", q);
}
}
}
/** Callback for when a buffer from a connected input port is finally released */
static MMAL_BOOL_T mmal_port_connected_pool_cb(MMAL_POOL_T *pool, MMAL_BUFFER_HEADER_T *buffer, void *userdata)
{
MMAL_PORT_T* port = (MMAL_PORT_T*)userdata;
MMAL_STATUS_T status;
MMAL_PARAM_UNUSED(pool);
LOG_TRACE("released buffer %p, data %p alloc_size %u length %u",
buffer, buffer->data, buffer->alloc_size, buffer->length);
/* Pipe the buffer back to the output port */
status = mmal_port_send_buffer(port, buffer);
/* Put the buffer back in the pool if we were successful */
return status != MMAL_SUCCESS;
}
/** Preview worker thread.
* Ensures camera preview is supplied with buffers and sends preview frames to GL.
* @param arg Pointer to state.
* @return NULL always.
*/
static void *preview_worker(void *arg)
{
RASPITEX_STATE* state = arg;
MMAL_PORT_T *preview_port = state->preview_port;
MMAL_BUFFER_HEADER_T *buf;
MMAL_STATUS_T st;
int rc;
vcos_log_trace("%s: port %p", VCOS_FUNCTION, preview_port);
rc = state->ops.create_native_window(state);
if (rc != 0)
goto end;
rc = state->ops.gl_init(state);
if (rc != 0)
goto end;
while (state->preview_stop == 0)
{
/* Send empty buffers to camera preview port */
while ((buf = mmal_queue_get(state->preview_pool->queue)) != NULL)
{
st = mmal_port_send_buffer(preview_port, buf);
if (st != MMAL_SUCCESS)
{
vcos_log_error("Failed to send buffer to %s", preview_port->name);
}
}
/* Process returned buffers */
if (preview_process_returned_bufs(state) != 0)
{
vcos_log_error("Preview error. Exiting.");
state->preview_stop = 1;
}
}
end:
/* Make sure all buffers are returned on exit */
while ((buf = mmal_queue_get(state->preview_queue)) != NULL)
mmal_buffer_header_release(buf);
/* Tear down GL */
state->ops.gl_term(state);
vcos_log_trace("Exiting preview worker");
return NULL;
}
// Move prepared/split packets from waiting_buffers to the MMAL decoder.
static int ffmmal_fill_input_port(AVCodecContext *avctx)
{
MMALDecodeContext *ctx = avctx->priv_data;
while (ctx->waiting_buffers) {
MMAL_BUFFER_HEADER_T *mbuffer;
FFBufferEntry *buffer;
MMAL_STATUS_T status;
mbuffer = mmal_queue_get(ctx->pool_in->queue);
if (!mbuffer)
return 0;
buffer = ctx->waiting_buffers;
mmal_buffer_header_reset(mbuffer);
mbuffer->cmd = 0;
mbuffer->pts = buffer->pts;
mbuffer->dts = buffer->dts;
mbuffer->flags = buffer->flags;
mbuffer->data = buffer->data;
mbuffer->length = buffer->length;
mbuffer->user_data = buffer;
mbuffer->alloc_size = ctx->decoder->input[0]->buffer_size;
// Remove from start of the list
ctx->waiting_buffers = buffer->next;
if (ctx->waiting_buffers_tail == buffer)
ctx->waiting_buffers_tail = NULL;
if ((status = mmal_port_send_buffer(ctx->decoder->input[0], mbuffer))) {
mmal_buffer_header_release(mbuffer);
av_buffer_unref(&buffer->ref);
if (buffer->flags & MMAL_BUFFER_HEADER_FLAG_FRAME_END)
avpriv_atomic_int_add_and_fetch(&ctx->packets_buffered, -1);
av_free(buffer);
}
if (status) {
av_log(avctx, AV_LOG_ERROR, "MMAL error %d when sending input\n", (int)status);
return AVERROR_UNKNOWN;
}
}
return 0;
}
void PiCam::start() {
if (mmal_port_parameter_set_boolean(videoPort, MMAL_PARAMETER_CAPTURE, 1) != MMAL_SUCCESS)
{
throw std::runtime_error("Couldn't start video capture");
}
vcos_semaphore_create(&frame_semaphore, "frame_semaphore", 0);
int num = mmal_queue_length(videoPool->queue);
int q;
for (q=0;q<num;q++)
{
MMAL_BUFFER_HEADER_T *buffer = mmal_queue_get(videoPool->queue);
// TODO: Add numbers to these error messages.
if (!buffer)
throw std::runtime_error("Unable to get a required buffer from pool queue");
if (mmal_port_send_buffer(videoPort, buffer)!= MMAL_SUCCESS)
throw std::runtime_error("Unable to send a buffer to an encoder output port");
}
std::chrono::time_point<std::chrono::system_clock> t1, t2;
t1 = std::chrono::system_clock::now();
/*
while(true) {
if(vcos_semaphore_wait(&frame_semaphore) == VCOS_SUCCESS) {
callback(frame);
++numFrames;
if(numFrames >= 30) {
t2 = std::chrono::system_clock::now();
std::chrono::duration<float> secs = t2-t1;
t1 = t2;
std::cout << (numFrames / secs.count()) << " FPS\n";
numFrames = 0;
}
cv::waitKey(1);
}
}
*/
}
static int send_output_buffer(filter_t *filter)
{
filter_sys_t *sys = filter->p_sys;
MMAL_BUFFER_HEADER_T *buffer;
MMAL_STATUS_T status;
picture_t *picture;
int ret = 0;
if (!sys->output->is_enabled) {
ret = VLC_EGENERIC;
goto out;
}
picture = filter_NewPicture(filter);
if (!picture) {
msg_Warn(filter, "Failed to get new picture");
ret = -1;
goto out;
}
picture->format.i_frame_rate = filter->fmt_out.video.i_frame_rate;
picture->format.i_frame_rate_base = filter->fmt_out.video.i_frame_rate_base;
buffer = picture->p_sys->buffer;
buffer->user_data = picture;
buffer->cmd = 0;
mmal_picture_lock(picture);
vlc_mutex_lock(&sys->buffer_cond_mutex);
status = mmal_port_send_buffer(sys->output, buffer);
if (status != MMAL_SUCCESS) {
msg_Err(filter, "Failed to send buffer to output port (status=%"PRIx32" %s)",
status, mmal_status_to_string(status));
mmal_buffer_header_release(buffer);
picture_Release(picture);
ret = -1;
} else {
atomic_fetch_add(&sys->output_in_transit, 1);
vlc_cond_signal(&sys->buffer_cond);
}
vlc_mutex_unlock(&sys->buffer_cond_mutex);
out:
return ret;
}
/**
* buffer header callback function for camera output port
*
* Callback will dump buffer data to the specific file
*
* @param port Pointer to port from which callback originated
* @param buffer mmal buffer header pointer
*/
static void camera_buffer_callback(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
MMAL_STATUS_T status;
// We pass our file handle and other stuff in via the userdata field.
PORT_USERDATA *pData = (PORT_USERDATA *)port->userdata;
if (pData)
{
if (buffer->length)
{
mmal_buffer_header_mem_lock(buffer);
fwrite(buffer->data, 1, buffer->length, pData->file_handle);
mmal_buffer_header_mem_unlock(buffer);
}
// What about error conditions?
if (buffer->flags & (MMAL_BUFFER_HEADER_FLAG_FRAME_END | MMAL_BUFFER_HEADER_FLAG_EOS | MMAL_BUFFER_HEADER_FLAG_TRANSMISSION_FAILED))
{
vcos_semaphore_post(&(pData->complete_semaphore));
}
}
else
{
vcos_log_error("Received a camera still buffer callback with no state");
}
// release buffer back to the pool
mmal_buffer_header_release(buffer);
// and send one back to the port (if still open)
if (port->is_enabled)
{
MMAL_BUFFER_HEADER_T *new_buffer = mmal_queue_get(pData->pstate->camera_pool->queue);
// and back to the port from there.
status = mmal_port_send_buffer(port, new_buffer);
if (status != MMAL_SUCCESS)
vcos_log_error("Unable to return the buffer to the camera still port");
}
}
void CMMALVideo::Recycle(MMAL_BUFFER_HEADER_T *buffer)
{
if (g_advancedSettings.CanLogComponent(LOGVIDEO))
CLog::Log(LOGDEBUG, "%s::%s %p", CLASSNAME, __func__, buffer);
MMAL_STATUS_T status;
mmal_buffer_header_reset(buffer);
buffer->cmd = 0;
if (g_advancedSettings.CanLogComponent(LOGVIDEO))
CLog::Log(LOGDEBUG, "%s::%s Send buffer %p from pool to decoder output port %p dts_queue(%d) ready_queue(%d) busy_queue(%d)", CLASSNAME, __func__, buffer, m_dec_output,
m_dts_queue.size(), m_output_ready.size(), m_output_busy);
status = mmal_port_send_buffer(m_dec_output, buffer);
if (status != MMAL_SUCCESS)
{
CLog::Log(LOGERROR, "%s::%s - Failed send buffer to decoder output port (status=0%x %s)", CLASSNAME, __func__, status, mmal_status_to_string(status));
return;
}
}
/** Connected input port buffer callback */
static void mmal_port_connected_input_cb(MMAL_PORT_T *port, MMAL_BUFFER_HEADER_T *buffer)
{
LOG_TRACE("buffer %p from connected input port %p: data %p, alloc_size %u, length %u",
buffer, port, buffer->data, buffer->alloc_size, buffer->length);
/* Clock ports are bi-directional and a buffer coming from an "input"
* clock port can potentially have valid payload data, in which case
* it should be sent directly to the connected port. */
if (port->type == MMAL_PORT_TYPE_CLOCK && buffer->length)
{
MMAL_PORT_T* connected_port = port->priv->core->connected_port;
mmal_port_send_buffer(connected_port, buffer);
return;
}
/* Simply release buffer back into pool for re-use */
mmal_buffer_header_release(buffer);
}