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Enumerate v4l2 devices

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This commit is contained in:
Kamil Trzcinski
2022-09-02 20:21:11 +02:00
parent 328198745b
commit 0a37c63d00
9 changed files with 291 additions and 5 deletions
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4
device/camera/camera.c
View File

@ -1,6 +1,7 @@
#include "camera.h"
#include "device/device.h"
#include "device/device_list.h"
#include "device/buffer_list.h"
#include "device/links.h"
#include "util/opts/log.h"
@ -11,6 +12,7 @@ camera_t *camera_open(camera_options_t *options)
camera_t *camera = calloc(1, sizeof(camera_t));
camera->name = "CAMERA";
camera->options = *options;
camera->device_list = device_list_v4l2();
if (camera_configure_input(camera) < 0) {
goto error;
@ -50,7 +52,7 @@ void camera_close(camera_t **camerap)
}
}
memset(camera->links, 0, sizeof(camera->links));
device_list_free(camera->device_list);
free(camera);
}

2
device/camera/camera.h
View File

@ -66,6 +66,8 @@ typedef struct camera_s {
};
};
struct device_list_s *device_list;
link_t links[MAX_DEVICES];
int nlinks;
} camera_t;

1
device/camera/camera_input.c
View File

@ -3,6 +3,7 @@
#include "device/buffer.h"
#include "device/buffer_list.h"
#include "device/device.h"
#include "device/device_list.h"
#include "device/links.h"
#include "util/opts/log.h"
#include "util/opts/fourcc.h"

10
device/camera/camera_isp.c
View File

@ -3,6 +3,7 @@
#include "device/buffer.h"
#include "device/buffer_list.h"
#include "device/device.h"
#include "device/device_list.h"
#include "device/links.h"
#include "util/opts/log.h"
#include "util/opts/fourcc.h"
@ -43,7 +44,14 @@ static const char *isp_names[2] = {
int camera_configure_legacy_isp(camera_t *camera, buffer_list_t *src_capture, float div, int res)
{
camera->legacy_isp[res] = device_v4l2_open(isp_names[res], "/dev/video12");
device_info_t *device = device_list_find_m2m_format(camera->device_list, src_capture->fmt.format, V4L2_PIX_FMT_YUYV);
if (!device) {
LOG_INFO(camera, "Cannot find ISP to scale from '%s' to 'YUYV'", fourcc_to_string(src_capture->fmt.format).buf);
return -1;
}
camera->legacy_isp[res] = device_v4l2_open(isp_names[res], device->path);
buffer_list_t *isp_output = device_open_buffer_list_output(
camera->legacy_isp[res], src_capture);

41
device/camera/camera_output.c
View File

@ -3,6 +3,7 @@
#include "device/buffer.h"
#include "device/buffer_list.h"
#include "device/device.h"
#include "device/device_list.h"
#include "device/links.h"
#include "util/opts/log.h"
#include "util/opts/fourcc.h"
@ -55,7 +56,14 @@ static int camera_configure_h264_output(camera_t *camera, buffer_list_t *src_cap
return 0;
}
camera->codec_h264[res] = device_v4l2_open(h264_names[res], "/dev/video11");
device_info_t *device = device_list_find_m2m_format(camera->device_list, src_capture->fmt.format, V4L2_PIX_FMT_H264);
if (!device) {
LOG_INFO(camera, "Cannot find H264 encoder to convert from '%s'", fourcc_to_string(src_capture->fmt.format).buf);
return -1;
}
camera->codec_h264[res] = device_v4l2_open(h264_names[res], device->path);
buffer_list_t *output = device_open_buffer_list_output(camera->codec_h264[res], src_capture);
buffer_list_t *capture = device_open_buffer_list_capture(camera->codec_h264[res], output, 1.0, V4L2_PIX_FMT_H264, true);
@ -76,7 +84,18 @@ static int camera_configure_jpeg_output(camera_t *camera, buffer_list_t *src_cap
return 0;
}
camera->codec_jpeg[res] = device_v4l2_open(jpeg_names[res], "/dev/video31");
device_info_t *device = device_list_find_m2m_format(camera->device_list, src_capture->fmt.format, V4L2_PIX_FMT_JPEG);
if (!device) {
device = device_list_find_m2m_format(camera->device_list, src_capture->fmt.format, V4L2_PIX_FMT_MJPEG);
}
if (!device) {
LOG_INFO(camera, "Cannot find JPEG encoder to convert from '%s'", fourcc_to_string(src_capture->fmt.format).buf);
return -1;
}
camera->codec_jpeg[res] = device_v4l2_open(jpeg_names[res], device->path);
buffer_list_t *output = device_open_buffer_list_output(camera->codec_jpeg[res], src_capture);
buffer_list_t *capture = device_open_buffer_list_capture(camera->codec_jpeg[res], output, 1.0, V4L2_PIX_FMT_JPEG, true);
@ -123,9 +142,25 @@ int camera_configure_output_rescaler(camera_t *camera, buffer_list_t *src_captur
int camera_configure_decoder(camera_t *camera, buffer_list_t *src_capture)
{
unsigned decode_formats[] = {
V4L2_PIX_FMT_YUYV,
V4L2_PIX_FMT_YUV420,
V4L2_PIX_FMT_YVU420,
V4L2_PIX_FMT_NV12,
V4L2_PIX_FMT_NV21,
0
};
unsigned chosen_format = 0;
device_info_t *device = device_list_find_m2m_formats(camera->device_list, src_capture->fmt.format, decode_formats, &chosen_format);
if (!device) {
LOG_INFO(camera, "Cannot find '%s' decoder", fourcc_to_string(src_capture->fmt.format).buf);
return -1;
}
device_video_force_key(camera->camera);
camera->decoder = device_v4l2_open("DECODER", "/dev/video10");
camera->decoder = device_v4l2_open("DECODER", device->path);
buffer_list_t *decoder_output = device_open_buffer_list_output(
camera->decoder, src_capture);