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arvfakecamera.c
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/* Aravis - Digital camera library
*
* Copyright © 2009-2022 Emmanuel Pacaud
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
* Author: Emmanuel Pacaud <[email protected]>
*/
/**
* SECTION: arvfakecamera
* @short_description: Fake camera internals
*
* #ArvFakeCamera is a class that simulate a real camera, which provides
* methods for the implementation of #ArvFakeDevice and #ArvFakeStream.
*
* arv-fake-gv-camera is a GV camera simulator based on this class.
*/
#include <arvfakecamera.h>
#include <arvversion.h>
#include <arvgc.h>
#include <arvgcregisternode.h>
#include <arvgvcpprivate.h>
#include <arvbufferprivate.h>
#include <arvdebug.h>
#include <arvmiscprivate.h>
#include <string.h>
#include <math.h>
static char *arv_fake_camera_genicam_filename = NULL;
/*
* arv_set_fake_camera_genicam_filename:
* @filename: path to genicam file
*
* Sets name of genicam file. This needs to be called prior to
* instantiation of the fake camera. This function is not thread safe.
*/
void
arv_set_fake_camera_genicam_filename (const char *filename)
{
g_clear_pointer (&arv_fake_camera_genicam_filename, g_free);
arv_fake_camera_genicam_filename = g_strdup (filename);
}
static const char *
arv_get_fake_camera_genicam_filename (void)
{
return arv_fake_camera_genicam_filename;
}
typedef struct {
void *memory;
char *genicam_xml;
size_t genicam_xml_size;
char *genicam_xml_url;
guint32 frame_id;
double trigger_frequency;
GMutex fill_pattern_mutex;
ArvFakeCameraFillPattern fill_pattern_callback;
void *fill_pattern_data;
} ArvFakeCameraPrivate;
struct _ArvFakeCamera {
GObject object;
ArvFakeCameraPrivate *priv;
};
struct _ArvFakeCameraClass {
GObjectClass parent_class;
};
G_DEFINE_TYPE_WITH_CODE (ArvFakeCamera, arv_fake_camera, G_TYPE_OBJECT, G_ADD_PRIVATE (ArvFakeCamera))
/* ArvFakeCamera implementation */
gboolean
arv_fake_camera_read_memory (ArvFakeCamera *camera, guint32 address, guint32 size, void *buffer)
{
guint32 read_size;
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
g_return_val_if_fail (size > 0, FALSE);
if (address < ARV_FAKE_CAMERA_MEMORY_SIZE) {
read_size = MIN (address + size, ARV_FAKE_CAMERA_MEMORY_SIZE) - address;
memcpy (buffer, ((char *) camera->priv->memory) + address, read_size);
if (read_size == size)
return TRUE;
size = size - read_size;
address = ARV_FAKE_CAMERA_MEMORY_SIZE;
buffer = ((char *) buffer) + read_size;
}
address -= ARV_FAKE_CAMERA_MEMORY_SIZE;
read_size = MIN (address + size, camera->priv->genicam_xml_size) - address;
memcpy (buffer, ((char *) camera->priv->genicam_xml) + address, read_size);
if (read_size < size)
memset (((char *) buffer) + read_size, 0, size - read_size);
return TRUE;
}
gboolean
arv_fake_camera_write_memory (ArvFakeCamera *camera, guint32 address, guint32 size, const void *buffer)
{
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), FALSE);
g_return_val_if_fail (address + size < ARV_FAKE_CAMERA_MEMORY_SIZE + camera->priv->genicam_xml_size, FALSE);
g_return_val_if_fail (buffer != NULL, FALSE);
g_return_val_if_fail (size > 0, FALSE);
/* genicam_data are read only */
if (address + size > ARV_FAKE_CAMERA_MEMORY_SIZE)
return FALSE;
memcpy (((char *) camera->priv->memory) + address, buffer, size);
return TRUE;
}
/**
* arv_fake_camera_read_register:
* @camera: a #ArvFakeCamera
* @address: the register address
* @value: (out): the register value
*
* Return value: true if the read succeeded, false otherwise
*/
gboolean
arv_fake_camera_read_register (ArvFakeCamera *camera, guint32 address, guint32 *value)
{
gboolean success;
guint32 be_value = 0;
g_return_val_if_fail (value != NULL, FALSE);
success = arv_fake_camera_read_memory (camera, address, sizeof (*value), &be_value);
*value = GUINT32_FROM_BE (be_value);
return success;
}
gboolean
arv_fake_camera_write_register (ArvFakeCamera *camera, guint32 address, guint32 value)
{
guint32 be_value = GUINT32_TO_BE (value);
return arv_fake_camera_write_memory (camera, address, sizeof (value), &be_value);
}
static guint32
_get_register (ArvFakeCamera *camera, guint32 address)
{
guint32 value;
if (address + sizeof (guint32) > ARV_FAKE_CAMERA_MEMORY_SIZE)
return 0;
value = *((guint32 *) (((char *)(camera->priv->memory) + address)));
return GUINT32_FROM_BE (value);
}
size_t
arv_fake_camera_get_payload (ArvFakeCamera *camera)
{
guint32 width, height, pixel_format;
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), 0);
width = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_WIDTH);
height = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_HEIGHT);
pixel_format = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_PIXEL_FORMAT);
return width * height * ARV_PIXEL_FORMAT_BIT_PER_PIXEL(pixel_format)/8;
}
/**
* arv_fake_camera_get_sleep_time_for_next_frame:
* @camera: a #ArvFakeCamera
* @next_timestamp_us: (out) (optional): the timestamp for the next frame in microseconds
*
* Return value: the sleep time for the next frame
*/
guint64
arv_fake_camera_get_sleep_time_for_next_frame (ArvFakeCamera *camera, guint64 *next_timestamp_us)
{
guint64 time_us;
guint64 sleep_time_us;
guint64 frame_period_time_us;
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), 0);
if (_get_register (camera, ARV_FAKE_CAMERA_REGISTER_TRIGGER_MODE) == 1)
frame_period_time_us = 1000000L / camera->priv->trigger_frequency;
else
frame_period_time_us = (guint64) _get_register (camera, ARV_FAKE_CAMERA_REGISTER_ACQUISITION_FRAME_PERIOD_US);
if (frame_period_time_us == 0) {
arv_warning_misc ("Invalid zero frame period, defaulting to 1 second");
frame_period_time_us = 1000000L;
}
time_us = g_get_real_time ();
sleep_time_us = frame_period_time_us - (time_us % frame_period_time_us);
if (next_timestamp_us != NULL)
*next_timestamp_us = time_us + sleep_time_us;
return sleep_time_us;
}
void
arv_fake_camera_wait_for_next_frame (ArvFakeCamera *camera)
{
g_return_if_fail (ARV_IS_FAKE_CAMERA (camera));
g_usleep (arv_fake_camera_get_sleep_time_for_next_frame (camera, NULL));
}
static struct {
unsigned char r,g,b;
} jet_colormap [] =
{
{0 , 0 , 132},
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{124, 255, 132},
{128, 255, 128},
{132, 255, 124},
{136, 255, 120},
{140, 255, 116},
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{148, 255, 108},
{152, 255, 104},
{156, 255, 100},
{160, 255, 96},
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{172, 255, 84},
{176, 255, 80},
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{200, 255, 56},
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{212, 255, 44},
{216, 255, 40},
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{224, 255, 32},
{228, 255, 28},
{232, 255, 24},
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{148, 0, 0},
{144, 0, 0},
{140, 0, 0},
{136, 0, 0},
{132, 0, 0},
{128, 0, 0},
};
static void
arv_fake_camera_diagonal_ramp (ArvBuffer *buffer, void *fill_pattern_data,
guint32 exposure_time_us,
guint32 gain,
ArvPixelFormat pixel_format)
{
double pixel_value;
double scale;
guint32 x, y;
guint32 width;
guint32 height;
g_return_if_fail (buffer != NULL);
g_return_if_fail (buffer->priv->n_parts == 1);
width = buffer->priv->parts[0].width;
height = buffer->priv->parts[0].height;
scale = 1.0 + gain + log10 ((double) exposure_time_us / 10000.0);
switch (pixel_format)
{
case ARV_PIXEL_FORMAT_MONO_8:
if (height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned char *pixel = &buffer->priv->data [y * width + x];
pixel_value = (x + buffer->priv->frame_id + y) % 255;
pixel_value *= scale;
*pixel = CLAMP (pixel_value, 0, 255);
}
}
buffer->priv->received_size = height * width;
}
break;
case ARV_PIXEL_FORMAT_MONO_16:
if (2 * height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned short *pixel = (unsigned short *)&buffer->priv->data [2*y * width + 2*x];
pixel_value = (256*x + 256*buffer->priv->frame_id + 256*y) % 65535;
pixel_value *= scale;
*pixel = CLAMP (pixel_value, 0, 65535);
}
}
buffer->priv->received_size = 2 * height * width;
}
break;
case ARV_PIXEL_FORMAT_BAYER_BG_8:
if (height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned int index;
unsigned char *pixel;
pixel_value = (x + buffer->priv->frame_id + y) % 255;
pixel_value *= scale;
index = CLAMP (pixel_value, 0, 255);
// BG
// GR
pixel = &buffer->priv->data [y * width + x];
if (x & 1) {
if (y & 1)
*pixel = jet_colormap [index].b;
else
*pixel = jet_colormap [index].g;
} else {
if (y & 1)
*pixel = jet_colormap [index].g;
else
*pixel = jet_colormap [index].r;
}
}
}
buffer->priv->received_size = height * width;
}
break;
case ARV_PIXEL_FORMAT_BAYER_GB_8:
if (height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned int index;
unsigned char *pixel;
pixel_value = (x + buffer->priv->frame_id + y) % 255;
pixel_value *= scale;
index = CLAMP (pixel_value, 0, 255);
// GB
// RG
pixel = &buffer->priv->data [y * width + x];
if (x & 1) {
if (y & 1)
*pixel = jet_colormap [index].g;
else
*pixel = jet_colormap [index].b;
} else {
if (y & 1)
*pixel = jet_colormap [index].r;
else
*pixel = jet_colormap [index].g;
}
}
}
buffer->priv->received_size = height * width;
}
break;
case ARV_PIXEL_FORMAT_BAYER_GR_8:
if (height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned int index;
unsigned char *pixel;
pixel_value = (x + buffer->priv->frame_id + y) % 255;
pixel_value *= scale;
index = CLAMP (pixel_value, 0, 255);
// GR
// BG
pixel = &buffer->priv->data [y * width + x];
if (x & 1) {
if (y & 1)
*pixel = jet_colormap [index].g;
else
*pixel = jet_colormap [index].r;
} else {
if (y & 1)
*pixel = jet_colormap [index].b;
else
*pixel = jet_colormap [index].g;
}
}
}
buffer->priv->received_size = height * width;
}
break;
case ARV_PIXEL_FORMAT_BAYER_RG_8:
if (height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned int index;
unsigned char *pixel;
pixel_value = (x + buffer->priv->frame_id + y) % 255;
pixel_value *= scale;
index = CLAMP (pixel_value, 0, 255);
// RG
// GB
pixel = &buffer->priv->data [y * width + x];
if (x & 1) {
if (y & 1)
*pixel = jet_colormap [index].r;
else
*pixel = jet_colormap [index].g;
} else {
if (y & 1)
*pixel = jet_colormap [index].g;
else
*pixel = jet_colormap [index].b;
}
}
}
buffer->priv->received_size = height * width;
}
break;
case ARV_PIXEL_FORMAT_RGB_8_PACKED:
if (3 * height * width <= buffer->priv->allocated_size) {
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
unsigned char *pixel = &buffer->priv->data [3 * (y * width + x)];
unsigned int index;
pixel_value = (x + buffer->priv->frame_id + y) % 255;
pixel_value *= scale;
index = CLAMP (pixel_value, 0, 255);
pixel[0] = jet_colormap [index].r;
pixel[1] = jet_colormap [index].g;
pixel[2] = jet_colormap [index].b;
}
}
buffer->priv->received_size = 3 * height * width;
}
break;
default:
g_critical ("Unsupported pixel format");
break;
}
}
/**
* arv_fake_camera_set_fill_pattern:
* @camera: a #ArvFakeCamera
* @fill_pattern_callback: (scope call): callback for image filling
* @fill_pattern_data: (closure): image filling user data
*
* Sets the fill pattern callback for custom test images.
*/
void
arv_fake_camera_set_fill_pattern (ArvFakeCamera *camera,
ArvFakeCameraFillPattern fill_pattern_callback,
void *fill_pattern_data)
{
g_return_if_fail (ARV_IS_FAKE_CAMERA (camera));
g_mutex_lock (&camera->priv->fill_pattern_mutex);
if (fill_pattern_callback != NULL) {
camera->priv->fill_pattern_callback = fill_pattern_callback;
camera->priv->fill_pattern_data = fill_pattern_data;
} else {
camera->priv->fill_pattern_callback = arv_fake_camera_diagonal_ramp;
camera->priv->fill_pattern_data = NULL;
}
g_mutex_unlock (&camera->priv->fill_pattern_mutex);
}
/**
* arv_fake_camera_fill_buffer:
* @camera: a #ArvFakeCamera
* @buffer: the #ArvBuffer to fill
* @packet_size: (out) (optional): the packet size
*
* Fill a buffer with data from the fake camera.
*/
void
arv_fake_camera_fill_buffer (ArvFakeCamera *camera, ArvBuffer *buffer, guint32 *packet_size)
{
guint32 width;
guint32 height;
guint32 exposure_time_us;
guint32 gain;
guint32 pixel_format;
size_t payload;
if (camera == NULL || buffer == NULL)
return;
arv_buffer_set_n_parts(buffer, 1);
width = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_WIDTH);
height = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_HEIGHT);
payload = arv_fake_camera_get_payload (camera);
if (buffer->priv->allocated_size < payload) {
buffer->priv->status = ARV_BUFFER_STATUS_SIZE_MISMATCH;
return;
}
/* frame id is a 16 bit value, 0 is invalid */
camera->priv->frame_id = (camera->priv->frame_id + 1) % 65536;
if (camera->priv->frame_id == 0)
camera->priv->frame_id = 1;
buffer->priv->payload_type = ARV_BUFFER_PAYLOAD_TYPE_IMAGE;
buffer->priv->chunk_endianness = G_BIG_ENDIAN;
buffer->priv->status = ARV_BUFFER_STATUS_SUCCESS;
buffer->priv->timestamp_ns = g_get_real_time () * 1000;
buffer->priv->system_timestamp_ns = buffer->priv->timestamp_ns;
buffer->priv->frame_id = camera->priv->frame_id;
buffer->priv->parts[0].data_offset = 0;
buffer->priv->parts[0].component_id = 0;
buffer->priv->parts[0].data_type = ARV_BUFFER_PART_DATA_TYPE_2D_IMAGE;
buffer->priv->parts[0].pixel_format = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_PIXEL_FORMAT);
buffer->priv->parts[0].width = width;
buffer->priv->parts[0].height = height;
buffer->priv->parts[0].x_offset = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_X_OFFSET);
buffer->priv->parts[0].y_offset = _get_register (camera, ARV_FAKE_CAMERA_REGISTER_Y_OFFSET);
buffer->priv->parts[0].x_padding = 0;
buffer->priv->parts[0].y_padding = 0;
g_mutex_lock (&camera->priv->fill_pattern_mutex);
arv_fake_camera_read_register (camera, ARV_FAKE_CAMERA_REGISTER_EXPOSURE_TIME_US, &exposure_time_us);
arv_fake_camera_read_register (camera, ARV_FAKE_CAMERA_REGISTER_GAIN_RAW, &gain);
arv_fake_camera_read_register (camera, ARV_FAKE_CAMERA_REGISTER_PIXEL_FORMAT, &pixel_format);
camera->priv->fill_pattern_callback (buffer, camera->priv->fill_pattern_data,
exposure_time_us, gain, pixel_format);
g_mutex_unlock (&camera->priv->fill_pattern_mutex);
buffer->priv->parts[0].size = buffer->priv->received_size;
if (packet_size != NULL)
*packet_size =
(_get_register (camera, ARV_GVBS_STREAM_CHANNEL_0_PACKET_SIZE_OFFSET) >>
ARV_GVBS_STREAM_CHANNEL_0_PACKET_SIZE_POS) &
ARV_GVBS_STREAM_CHANNEL_0_PACKET_SIZE_MASK;
}
void
arv_fake_camera_set_inet_address (ArvFakeCamera *camera, GInetAddress *address)
{
const guint8 *bytes;
g_return_if_fail (ARV_IS_FAKE_CAMERA (camera));
g_return_if_fail (G_IS_INET_ADDRESS (address));
g_return_if_fail (g_inet_address_get_family (address) == G_SOCKET_FAMILY_IPV4);
bytes = g_inet_address_to_bytes (address);
arv_fake_camera_write_memory (camera, ARV_GVBS_CURRENT_IP_ADDRESS_OFFSET,
g_inet_address_get_native_size (address), (char *) bytes);
}
guint32
arv_fake_camera_get_acquisition_status (ArvFakeCamera *camera)
{
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), 0);
return _get_register (camera, ARV_FAKE_CAMERA_REGISTER_ACQUISITION);
}
/**
* arv_fake_camera_get_stream_address:
* @camera: a #ArvFakeCamera
*
* Return value: (transfer full): the data stream #GSocketAddress for this camera
*/
GSocketAddress *
arv_fake_camera_get_stream_address (ArvFakeCamera *camera)
{
GSocketAddress *stream_socket_address;
GInetAddress *inet_address;
guint32 value;
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), NULL);
arv_fake_camera_read_memory (camera, ARV_GVBS_STREAM_CHANNEL_0_IP_ADDRESS_OFFSET, sizeof (value), &value);
inet_address = g_inet_address_new_from_bytes ((guint8 *) &value, G_SOCKET_FAMILY_IPV4);
stream_socket_address = g_inet_socket_address_new
(inet_address,
_get_register (camera, ARV_GVBS_STREAM_CHANNEL_0_PORT_OFFSET));
g_object_unref (inet_address);
return stream_socket_address;
}
void
arv_fake_camera_set_trigger_frequency (ArvFakeCamera *camera, double frequency)
{
g_return_if_fail (ARV_IS_FAKE_CAMERA (camera));
g_return_if_fail (frequency > 0.0);
camera->priv->trigger_frequency = frequency;
}
gboolean
arv_fake_camera_check_and_acknowledge_software_trigger (ArvFakeCamera *camera)
{
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), FALSE);
if (_get_register (camera, ARV_FAKE_CAMERA_REGISTER_TRIGGER_SOFTWARE) == 1) {
arv_fake_camera_write_register (camera, ARV_FAKE_CAMERA_REGISTER_TRIGGER_SOFTWARE, 0);
return TRUE;
}
return FALSE;
}
gboolean
arv_fake_camera_is_in_free_running_mode (ArvFakeCamera *camera)
{
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), FALSE);
if (_get_register (camera, ARV_FAKE_CAMERA_REGISTER_TRIGGER_MODE) == 0 &&
_get_register (camera, ARV_FAKE_CAMERA_REGISTER_ACQUISITION_FRAME_PERIOD_US) > 0) {
return TRUE;
}
return FALSE;
}
gboolean
arv_fake_camera_is_in_software_trigger_mode (ArvFakeCamera *camera)
{
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), FALSE);
if (_get_register (camera, ARV_FAKE_CAMERA_REGISTER_TRIGGER_MODE) == 1 &&
_get_register (camera, ARV_FAKE_CAMERA_REGISTER_TRIGGER_SOURCE) == 1) {
return TRUE;
}
return FALSE;
}
guint32
arv_fake_camera_get_control_channel_privilege (ArvFakeCamera *camera)
{
guint32 value;
arv_fake_camera_read_register (camera, ARV_GVBS_CONTROL_CHANNEL_PRIVILEGE_OFFSET, &value);
return value;
}
void
arv_fake_camera_set_control_channel_privilege (ArvFakeCamera *camera, guint32 privilege)
{
arv_fake_camera_write_register (camera, ARV_GVBS_CONTROL_CHANNEL_PRIVILEGE_OFFSET, privilege);
}
guint32
arv_fake_camera_get_heartbeat_timeout (ArvFakeCamera *camera)
{
guint32 value;
arv_fake_camera_read_register (camera, ARV_GVBS_HEARTBEAT_TIMEOUT_OFFSET, &value);
return value;
}
const char *
arv_fake_camera_get_genicam_xml_url (ArvFakeCamera *camera){
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), NULL);
return camera->priv->genicam_xml_url;
}
/**
* arv_fake_camera_get_genicam_xml:
* @camera: a #ArvFakeCamera
* @size: (out) (optional): the size of the returned XML string
*
* Return value: (transfer none): the genicam XML description of the camera
*/
const char *
arv_fake_camera_get_genicam_xml (ArvFakeCamera *camera, size_t *size)
{
if (size != NULL)
*size = 0;
g_return_val_if_fail (ARV_IS_FAKE_CAMERA (camera), NULL);
if (size != NULL)
*size = camera->priv->genicam_xml_size;
return camera->priv->genicam_xml;
}
/* GObject implemenation */
ArvFakeCamera *
arv_fake_camera_new_full (const char *serial_number, const char *genicam_filename)
{
ArvFakeCamera *fake_camera;
GError *error = NULL;
char *filename;
void *memory;
g_return_val_if_fail (serial_number != NULL, NULL);
g_return_val_if_fail (*serial_number != '\0', NULL);
g_return_val_if_fail (strlen (serial_number) < ARV_GVBS_SERIAL_NUMBER_SIZE, NULL);
fake_camera = g_object_new (ARV_TYPE_FAKE_CAMERA, NULL);
memory = g_malloc0 (ARV_FAKE_CAMERA_MEMORY_SIZE);
g_mutex_init (&fake_camera->priv->fill_pattern_mutex);
fake_camera->priv->fill_pattern_callback = arv_fake_camera_diagonal_ramp;
fake_camera->priv->fill_pattern_data = NULL;
if (genicam_filename != NULL)
filename = g_strdup (genicam_filename);
else if (arv_get_fake_camera_genicam_filename () != NULL)
filename = g_strdup (arv_get_fake_camera_genicam_filename ());
else
filename = NULL;