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rpicamsrc: split preview config and state

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This commit is contained in:
Jan Schmidt 2015-04-27 00:40:23 +10:00 committed by Tim-Philipp Müller
parent 3771777f7f
commit 1610030b40
2 changed files with 84 additions and 57 deletions
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121
sys/rpicamsrc/RaspiPreview.c
View file

@ -72,13 +72,15 @@ static int cmdline_commands_size = sizeof(cmdline_commands) / sizeof(cmdline_com
* @return MMAL_SUCCESS if all OK, something else otherwise
*
*/
MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_PARAMETERS *state)
MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_STATE *state,
RASPIPREVIEW_PARAMETERS *config)
{
MMAL_COMPONENT_T *preview = 0;
MMAL_PORT_T *preview_port = NULL;
MMAL_STATUS_T status;
if (!state->wantPreview)
state->havePreview = config->wantPreview;
if (!config->wantPreview)
{
// No preview required, so create a null sink component to take its place
status = mmal_component_create("vc.null_sink", &preview);
@ -88,12 +90,13 @@ MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_PARAMETERS *state)
vcos_log_error("Unable to create null sink component");
goto error;
}
state->preview_component = preview;
}
else
{
status = mmal_component_create(MMAL_COMPONENT_DEFAULT_VIDEO_RENDERER,
&preview);
if (status != MMAL_SUCCESS)
{
vcos_log_error("Unable to create preview component");
@ -107,32 +110,9 @@ MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_PARAMETERS *state)
goto error;
}
preview_port = preview->input[0];
MMAL_DISPLAYREGION_T param;
param.hdr.id = MMAL_PARAMETER_DISPLAYREGION;
param.hdr.size = sizeof(MMAL_DISPLAYREGION_T);
param.set = MMAL_DISPLAY_SET_LAYER;
param.layer = PREVIEW_LAYER;
param.set |= MMAL_DISPLAY_SET_ALPHA;
param.alpha = state->opacity;
if (state->wantFullScreenPreview)
{
param.set |= MMAL_DISPLAY_SET_FULLSCREEN;
param.fullscreen = 1;
}
else
{
param.set |= (MMAL_DISPLAY_SET_DEST_RECT | MMAL_DISPLAY_SET_FULLSCREEN);
param.fullscreen = 0;
param.dest_rect = state->previewWindow;
}
status = mmal_port_parameter_set(preview_port, &param.hdr);
state->preview_component = preview;
raspipreview_update_config (state, config);
if (status != MMAL_SUCCESS && status != MMAL_ENOSYS)
{
vcos_log_error("unable to set preview port parameters (%u)", status);
@ -142,25 +122,65 @@ MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_PARAMETERS *state)
/* Enable component */
status = mmal_component_enable(preview);
if (status != MMAL_SUCCESS)
{
vcos_log_error("Unable to enable preview/null sink component (%u)", status);
goto error;
}
state->preview_component = preview;
return status;
error:
if (preview)
mmal_component_destroy(preview);
if (preview) {
mmal_component_destroy(preview);
state->preview_component = NULL;
}
return status;
}
MMAL_STATUS_T
raspipreview_update_config (RASPIPREVIEW_STATE *state,
RASPIPREVIEW_PARAMETERS *config)
{
MMAL_COMPONENT_T *preview = state->preview_component;
MMAL_PORT_T *preview_port = NULL;
MMAL_DISPLAYREGION_T param;
MMAL_STATUS_T status;
/* Can't update props on the null preview component */
if (state->havePreview == 0)
return MMAL_SUCCESS;
preview_port = preview->input[0];
param.hdr.id = MMAL_PARAMETER_DISPLAYREGION;
param.hdr.size = sizeof(MMAL_DISPLAYREGION_T);
param.set = MMAL_DISPLAY_SET_LAYER;
param.layer = PREVIEW_LAYER;
param.set |= MMAL_DISPLAY_SET_ALPHA;
param.alpha = config->opacity;
if (config->wantFullScreenPreview)
{
param.set |= MMAL_DISPLAY_SET_FULLSCREEN;
param.fullscreen = 1;
}
else
{
param.set |= (MMAL_DISPLAY_SET_DEST_RECT | MMAL_DISPLAY_SET_FULLSCREEN);
param.fullscreen = 0;
param.dest_rect = config->previewWindow;
}
status = mmal_port_parameter_set(preview_port, &param.hdr);
if (status == MMAL_ENOSYS)
status = MMAL_SUCCESS;
return status;
}
/**
* Destroy the preview component
@ -168,7 +188,7 @@ error:
* @param state Pointer to state control struct
*
*/
void raspipreview_destroy(RASPIPREVIEW_PARAMETERS *state)
void raspipreview_destroy(RASPIPREVIEW_STATE *state)
{
if (state->preview_component)
{
@ -183,16 +203,15 @@ void raspipreview_destroy(RASPIPREVIEW_PARAMETERS *state)
* @param state Pointer to parameter block
*
*/
void raspipreview_set_defaults(RASPIPREVIEW_PARAMETERS *state)
void raspipreview_set_defaults(RASPIPREVIEW_PARAMETERS *config)
{
state->wantPreview = 1;
state->wantFullScreenPreview = 1;
state->opacity = 255;
state->previewWindow.x = 0;
state->previewWindow.y = 0;
state->previewWindow.width = 1024;
state->previewWindow.height = 768;
state->preview_component = NULL;
config->wantPreview = 1;
config->wantFullScreenPreview = 1;
config->opacity = 255;
config->previewWindow.x = 0;
config->previewWindow.y = 0;
config->previewWindow.width = 1024;
config->previewWindow.height = 768;
}
/**
@ -201,14 +220,14 @@ void raspipreview_set_defaults(RASPIPREVIEW_PARAMETERS *state)
* @param state Pointer to parameter block
*
*/
void raspipreview_dump_parameters(RASPIPREVIEW_PARAMETERS *state)
void raspipreview_dump_parameters(RASPIPREVIEW_PARAMETERS *config)
{
fprintf(stderr, "Preview %s, Full screen %s\n", state->wantPreview ? "Yes" : "No",
state->wantFullScreenPreview ? "Yes" : "No");
fprintf(stderr, "Preview %s, Full screen %s\n", config->wantPreview ? "Yes" : "No",
config->wantFullScreenPreview ? "Yes" : "No");
fprintf(stderr, "Preview window %d,%d,%d,%d\nOpacity %d\n", state->previewWindow.x,
state->previewWindow.y, state->previewWindow.width,
state->previewWindow.height, state->opacity);
fprintf(stderr, "Preview window %d,%d,%d,%d\nOpacity %d\n", config->previewWindow.x,
config->previewWindow.y, config->previewWindow.width,
config->previewWindow.height, config->opacity);
};
#if 0

20
sys/rpicamsrc/RaspiPreview.h
View file

@ -48,20 +48,28 @@ SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#define FULL_FOV_PREVIEW_FRAME_RATE_NUM 0
#define FULL_FOV_PREVIEW_FRAME_RATE_DEN 1
typedef struct
{
MMAL_COMPONENT_T *preview_component; /// Pointer to the created preview display component
int havePreview; /// component is preview, else null sink
} RASPIPREVIEW_STATE;
typedef struct
{
int wantPreview; /// Display a preview
int wantFullScreenPreview; /// 0 is use previewRect, non-zero to use full screen
int opacity; /// Opacity of window - 0 = transparent, 255 = opaque
MMAL_RECT_T previewWindow; /// Destination rectangle for the preview window.
MMAL_COMPONENT_T *preview_component; /// Pointer to the created preview display component
} RASPIPREVIEW_PARAMETERS;
MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_PARAMETERS *state);
void raspipreview_destroy(RASPIPREVIEW_PARAMETERS *state);
void raspipreview_set_defaults(RASPIPREVIEW_PARAMETERS *state);
void raspipreview_dump_parameters(RASPIPREVIEW_PARAMETERS *state);
int raspipreview_parse_cmdline(RASPIPREVIEW_PARAMETERS *params, const char *arg1, const char *arg2);
MMAL_STATUS_T raspipreview_create(RASPIPREVIEW_STATE *state,
RASPIPREVIEW_PARAMETERS *config);
void raspipreview_destroy(RASPIPREVIEW_STATE *state);
void raspipreview_set_defaults(RASPIPREVIEW_PARAMETERS *config);
void raspipreview_dump_parameters(RASPIPREVIEW_PARAMETERS *config);
int raspipreview_parse_cmdline(RASPIPREVIEW_PARAMETERS *config, const char *arg1, const char *arg2);
void raspipreview_display_help();
MMAL_STATUS_T raspipreview_update_config (RASPIPREVIEW_STATE *state,
RASPIPREVIEW_PARAMETERS *config);
#endif /* RASPIPREVIEW_H_ */