diff options
Diffstat (limited to 'src/gstreamer/gstlibcamera-utils.cpp')
| -rw-r--r-- | src/gstreamer/gstlibcamera-utils.cpp | 540 |
1 files changed, 490 insertions, 50 deletions
diff --git a/src/gstreamer/gstlibcamera-utils.cpp b/src/gstreamer/gstlibcamera-utils.cpp index a3cb0746..a466b305 100644 --- a/src/gstreamer/gstlibcamera-utils.cpp +++ b/src/gstreamer/gstlibcamera-utils.cpp @@ -3,61 +3,311 @@ * Copyright (C) 2020, Collabora Ltd. * Author: Nicolas Dufresne <nicolas.dufresne@collabora.com> * - * gstlibcamera-utils.c - GStreamer libcamera Utility Function + * GStreamer libcamera Utility Function */ #include "gstlibcamera-utils.h" -#include <linux/drm_fourcc.h> +#include <libcamera/control_ids.h> +#include <libcamera/formats.h> using namespace libcamera; static struct { GstVideoFormat gst_format; - guint drm_fourcc; + PixelFormat format; } format_map[] = { - { GST_VIDEO_FORMAT_ENCODED, DRM_FORMAT_MJPEG }, - { GST_VIDEO_FORMAT_RGB, DRM_FORMAT_BGR888 }, - { GST_VIDEO_FORMAT_BGR, DRM_FORMAT_RGB888 }, - { GST_VIDEO_FORMAT_ARGB, DRM_FORMAT_BGRA8888 }, - { GST_VIDEO_FORMAT_NV12, DRM_FORMAT_NV12 }, - { GST_VIDEO_FORMAT_NV21, DRM_FORMAT_NV21 }, - { GST_VIDEO_FORMAT_NV16, DRM_FORMAT_NV16 }, - { GST_VIDEO_FORMAT_NV61, DRM_FORMAT_NV61 }, - { GST_VIDEO_FORMAT_NV24, DRM_FORMAT_NV24 }, - { GST_VIDEO_FORMAT_UYVY, DRM_FORMAT_UYVY }, - { GST_VIDEO_FORMAT_VYUY, DRM_FORMAT_VYUY }, - { GST_VIDEO_FORMAT_YUY2, DRM_FORMAT_YUYV }, - { GST_VIDEO_FORMAT_YVYU, DRM_FORMAT_YVYU }, + /* Compressed */ + { GST_VIDEO_FORMAT_ENCODED, formats::MJPEG }, + + /* Bayer formats, gstreamer only supports 8-bit */ + { GST_VIDEO_FORMAT_ENCODED, formats::SBGGR8 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGBRG8 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGRBG8 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SRGGB8 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SBGGR10 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGBRG10 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGRBG10 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SRGGB10 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SBGGR12 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGBRG12 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGRBG12 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SRGGB12 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SBGGR14 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGBRG14 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGRBG14 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SRGGB14 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SBGGR16 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGBRG16 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SGRBG16 }, + { GST_VIDEO_FORMAT_ENCODED, formats::SRGGB16 }, + + /* Monochrome */ + { GST_VIDEO_FORMAT_GRAY8, formats::R8 }, + { GST_VIDEO_FORMAT_GRAY16_LE, formats::R16 }, + + /* RGB16 */ + { GST_VIDEO_FORMAT_RGB16, formats::RGB565 }, + + /* RGB24 */ + { GST_VIDEO_FORMAT_RGB, formats::BGR888 }, + { GST_VIDEO_FORMAT_BGR, formats::RGB888 }, + + /* RGB32 */ + { GST_VIDEO_FORMAT_BGRx, formats::XRGB8888 }, + { GST_VIDEO_FORMAT_RGBx, formats::XBGR8888 }, + { GST_VIDEO_FORMAT_xBGR, formats::RGBX8888 }, + { GST_VIDEO_FORMAT_xRGB, formats::BGRX8888 }, + { GST_VIDEO_FORMAT_BGRA, formats::ARGB8888 }, + { GST_VIDEO_FORMAT_RGBA, formats::ABGR8888 }, + { GST_VIDEO_FORMAT_ABGR, formats::RGBA8888 }, + { GST_VIDEO_FORMAT_ARGB, formats::BGRA8888 }, + + /* YUV Semiplanar */ + { GST_VIDEO_FORMAT_NV12, formats::NV12 }, + { GST_VIDEO_FORMAT_NV21, formats::NV21 }, + { GST_VIDEO_FORMAT_NV16, formats::NV16 }, + { GST_VIDEO_FORMAT_NV61, formats::NV61 }, + { GST_VIDEO_FORMAT_NV24, formats::NV24 }, + + /* YUV Planar */ + { GST_VIDEO_FORMAT_I420, formats::YUV420 }, + { GST_VIDEO_FORMAT_YV12, formats::YVU420 }, + { GST_VIDEO_FORMAT_Y42B, formats::YUV422 }, + + /* YUV Packed */ + { GST_VIDEO_FORMAT_UYVY, formats::UYVY }, + { GST_VIDEO_FORMAT_VYUY, formats::VYUY }, + { GST_VIDEO_FORMAT_YUY2, formats::YUYV }, + { GST_VIDEO_FORMAT_YVYU, formats::YVYU }, + /* \todo NV42 is used in libcamera but is not mapped in GStreamer yet. */ }; +static GstVideoColorimetry +colorimetry_from_colorspace(const ColorSpace &colorSpace, GstVideoTransferFunction transfer) +{ + GstVideoColorimetry colorimetry; + + switch (colorSpace.primaries) { + case ColorSpace::Primaries::Raw: + colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_UNKNOWN; + break; + case ColorSpace::Primaries::Smpte170m: + colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_SMPTE170M; + break; + case ColorSpace::Primaries::Rec709: + colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT709; + break; + case ColorSpace::Primaries::Rec2020: + colorimetry.primaries = GST_VIDEO_COLOR_PRIMARIES_BT2020; + break; + } + + switch (colorSpace.transferFunction) { + case ColorSpace::TransferFunction::Linear: + colorimetry.transfer = GST_VIDEO_TRANSFER_GAMMA10; + break; + case ColorSpace::TransferFunction::Srgb: + colorimetry.transfer = GST_VIDEO_TRANSFER_SRGB; + break; + case ColorSpace::TransferFunction::Rec709: + colorimetry.transfer = GST_VIDEO_TRANSFER_BT709; + if (transfer != GST_VIDEO_TRANSFER_UNKNOWN) + colorimetry.transfer = transfer; + break; + } + + switch (colorSpace.ycbcrEncoding) { + case ColorSpace::YcbcrEncoding::None: + colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_RGB; + break; + case ColorSpace::YcbcrEncoding::Rec601: + colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT601; + break; + case ColorSpace::YcbcrEncoding::Rec709: + colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT709; + break; + case ColorSpace::YcbcrEncoding::Rec2020: + colorimetry.matrix = GST_VIDEO_COLOR_MATRIX_BT2020; + break; + } + + switch (colorSpace.range) { + case ColorSpace::Range::Full: + colorimetry.range = GST_VIDEO_COLOR_RANGE_0_255; + break; + case ColorSpace::Range::Limited: + colorimetry.range = GST_VIDEO_COLOR_RANGE_16_235; + break; + } + + return colorimetry; +} + +static std::optional<ColorSpace> +colorspace_from_colorimetry(const GstVideoColorimetry &colorimetry, + GstVideoTransferFunction *transfer) +{ + std::optional<ColorSpace> colorspace = ColorSpace::Raw; + + switch (colorimetry.primaries) { + case GST_VIDEO_COLOR_PRIMARIES_UNKNOWN: + /* Unknown primaries map to raw colorspace in gstreamer */ + return ColorSpace::Raw; + case GST_VIDEO_COLOR_PRIMARIES_SMPTE170M: + colorspace->primaries = ColorSpace::Primaries::Smpte170m; + break; + case GST_VIDEO_COLOR_PRIMARIES_BT709: + colorspace->primaries = ColorSpace::Primaries::Rec709; + break; + case GST_VIDEO_COLOR_PRIMARIES_BT2020: + colorspace->primaries = ColorSpace::Primaries::Rec2020; + break; + default: + GST_WARNING("Colorimetry primaries %d not mapped in gstlibcamera", + colorimetry.primaries); + return std::nullopt; + } + + switch (colorimetry.transfer) { + /* Transfer function mappings inspired from v4l2src plugin */ + case GST_VIDEO_TRANSFER_GAMMA18: + case GST_VIDEO_TRANSFER_GAMMA20: + case GST_VIDEO_TRANSFER_GAMMA22: + case GST_VIDEO_TRANSFER_GAMMA28: + GST_WARNING("GAMMA 18, 20, 22, 28 transfer functions not supported"); + [[fallthrough]]; + case GST_VIDEO_TRANSFER_GAMMA10: + colorspace->transferFunction = ColorSpace::TransferFunction::Linear; + break; + case GST_VIDEO_TRANSFER_SRGB: + colorspace->transferFunction = ColorSpace::TransferFunction::Srgb; + break; +#if GST_CHECK_VERSION(1, 18, 0) + case GST_VIDEO_TRANSFER_BT601: + case GST_VIDEO_TRANSFER_BT2020_10: +#endif + case GST_VIDEO_TRANSFER_BT2020_12: + case GST_VIDEO_TRANSFER_BT709: + colorspace->transferFunction = ColorSpace::TransferFunction::Rec709; + *transfer = colorimetry.transfer; + break; + default: + GST_WARNING("Colorimetry transfer function %d not mapped in gstlibcamera", + colorimetry.transfer); + return std::nullopt; + } + + switch (colorimetry.matrix) { + case GST_VIDEO_COLOR_MATRIX_RGB: + colorspace->ycbcrEncoding = ColorSpace::YcbcrEncoding::None; + break; + /* FCC is about the same as BT601 with less digit */ + case GST_VIDEO_COLOR_MATRIX_FCC: + case GST_VIDEO_COLOR_MATRIX_BT601: + colorspace->ycbcrEncoding = ColorSpace::YcbcrEncoding::Rec601; + break; + case GST_VIDEO_COLOR_MATRIX_BT709: + colorspace->ycbcrEncoding = ColorSpace::YcbcrEncoding::Rec709; + break; + case GST_VIDEO_COLOR_MATRIX_BT2020: + colorspace->ycbcrEncoding = ColorSpace::YcbcrEncoding::Rec2020; + break; + default: + GST_WARNING("Colorimetry matrix %d not mapped in gstlibcamera", + colorimetry.matrix); + return std::nullopt; + } + + switch (colorimetry.range) { + case GST_VIDEO_COLOR_RANGE_0_255: + colorspace->range = ColorSpace::Range::Full; + break; + case GST_VIDEO_COLOR_RANGE_16_235: + colorspace->range = ColorSpace::Range::Limited; + break; + default: + GST_WARNING("Colorimetry range %d not mapped in gstlibcamera", + colorimetry.range); + return std::nullopt; + } + + return colorspace; +} + static GstVideoFormat -drm_to_gst_format(guint drm_fourcc) +pixel_format_to_gst_format(const PixelFormat &format) { for (const auto &item : format_map) { - if (item.drm_fourcc == drm_fourcc) + if (item.format == format) return item.gst_format; } return GST_VIDEO_FORMAT_UNKNOWN; } -static guint -gst_format_to_drm(GstVideoFormat gst_format) +static PixelFormat +gst_format_to_pixel_format(GstVideoFormat gst_format) { if (gst_format == GST_VIDEO_FORMAT_ENCODED) - return DRM_FORMAT_INVALID; + return PixelFormat{}; for (const auto &item : format_map) if (item.gst_format == gst_format) - return item.drm_fourcc; - return DRM_FORMAT_INVALID; + return item.format; + return PixelFormat{}; +} + +static const struct { + PixelFormat format; + const gchar *name; +} bayer_map[]{ + { formats::SBGGR8, "bggr" }, + { formats::SGBRG8, "gbrg" }, + { formats::SGRBG8, "grbg" }, + { formats::SRGGB8, "rggb" }, + { formats::SBGGR10, "bggr10le" }, + { formats::SGBRG10, "gbrg10le" }, + { formats::SGRBG10, "grbg10le" }, + { formats::SRGGB10, "rggb10le" }, + { formats::SBGGR12, "bggr12le" }, + { formats::SGBRG12, "gbrg12le" }, + { formats::SGRBG12, "grbg12le" }, + { formats::SRGGB12, "rggb12le" }, + { formats::SBGGR14, "bggr14le" }, + { formats::SGBRG14, "gbrg14le" }, + { formats::SGRBG14, "grbg14le" }, + { formats::SRGGB14, "rggb14le" }, + { formats::SBGGR16, "bggr16le" }, + { formats::SGBRG16, "gbrg16le" }, + { formats::SGRBG16, "grbg16le" }, + { formats::SRGGB16, "rggb16le" }, +}; + +static const gchar * +bayer_format_to_string(PixelFormat format) +{ + for (auto &b : bayer_map) { + if (b.format == format) + return b.name; + } + return nullptr; +} + +static PixelFormat +bayer_format_from_string(const gchar *name) +{ + for (auto &b : bayer_map) { + if (strcmp(b.name, name) == 0) + return b.format; + } + return PixelFormat{}; } static GstStructure * -bare_structure_from_fourcc(guint fourcc) +bare_structure_from_format(const PixelFormat &format) { - GstVideoFormat gst_format = drm_to_gst_format(fourcc); + GstVideoFormat gst_format = pixel_format_to_gst_format(format); if (gst_format == GST_VIDEO_FORMAT_UNKNOWN) return nullptr; @@ -66,9 +316,17 @@ bare_structure_from_fourcc(guint fourcc) return gst_structure_new("video/x-raw", "format", G_TYPE_STRING, gst_video_format_to_string(gst_format), nullptr); - switch (fourcc) { - case DRM_FORMAT_MJPEG: + switch (format) { + case formats::MJPEG: return gst_structure_new_empty("image/jpeg"); + + case formats::SBGGR8: + case formats::SGBRG8: + case formats::SGRBG8: + case formats::SRGGB8: + return gst_structure_new("video/x-bayer", "format", G_TYPE_STRING, + bayer_format_to_string(format), nullptr); + default: return nullptr; } @@ -80,7 +338,7 @@ gst_libcamera_stream_formats_to_caps(const StreamFormats &formats) GstCaps *caps = gst_caps_new_empty(); for (PixelFormat pixelformat : formats.pixelformats()) { - g_autoptr(GstStructure) bare_s = bare_structure_from_fourcc(pixelformat); + g_autoptr(GstStructure) bare_s = bare_structure_from_format(pixelformat); if (!bare_s) { GST_WARNING("Unsupported DRM format %" GST_FOURCC_FORMAT, @@ -103,13 +361,21 @@ gst_libcamera_stream_formats_to_caps(const StreamFormats &formats) GValue val = G_VALUE_INIT; g_value_init(&val, GST_TYPE_INT_RANGE); - gst_value_set_int_range_step(&val, range.min.width, range.max.width, range.hStep); - gst_structure_set_value(s, "width", &val); - gst_value_set_int_range_step(&val, range.min.height, range.max.height, range.vStep); - gst_structure_set_value(s, "height", &val); + if (range.min.width == range.max.width) { + gst_structure_set(s, "width", G_TYPE_INT, range.min.width, nullptr); + } else { + gst_value_set_int_range_step(&val, range.min.width, range.max.width, range.hStep); + gst_structure_set_value(s, "width", &val); + } + if (range.min.height == range.max.height) { + gst_structure_set(s, "height", G_TYPE_INT, range.min.height, nullptr); + } else { + gst_value_set_int_range_step(&val, range.min.height, range.max.height, range.vStep); + gst_structure_set_value(s, "height", &val); + } g_value_unset(&val); - gst_caps_append_structure(caps, s); + caps = gst_caps_merge_structure(caps, s); } } @@ -117,33 +383,88 @@ gst_libcamera_stream_formats_to_caps(const StreamFormats &formats) } GstCaps * -gst_libcamera_stream_configuration_to_caps(const StreamConfiguration &stream_cfg) +gst_libcamera_stream_configuration_to_caps(const StreamConfiguration &stream_cfg, + GstVideoTransferFunction transfer) { GstCaps *caps = gst_caps_new_empty(); - GstStructure *s = bare_structure_from_fourcc(stream_cfg.pixelFormat); + GstStructure *s = bare_structure_from_format(stream_cfg.pixelFormat); gst_structure_set(s, "width", G_TYPE_INT, stream_cfg.size.width, "height", G_TYPE_INT, stream_cfg.size.height, nullptr); + + if (stream_cfg.colorSpace) { + GstVideoColorimetry colorimetry = colorimetry_from_colorspace(stream_cfg.colorSpace.value(), transfer); + g_autofree gchar *colorimetry_str = gst_video_colorimetry_to_string(&colorimetry); + + if (colorimetry_str) + gst_structure_set(s, "colorimetry", G_TYPE_STRING, colorimetry_str, nullptr); + else + g_error("Got invalid colorimetry from ColorSpace: %s", + ColorSpace::toString(stream_cfg.colorSpace).c_str()); + } + gst_caps_append_structure(caps, s); return caps; } -void -gst_libcamera_configure_stream_from_caps(StreamConfiguration &stream_cfg, - GstCaps *caps) +void gst_libcamera_configure_stream_from_caps(StreamConfiguration &stream_cfg, + GstCaps *caps, GstVideoTransferFunction *transfer) { - GstVideoFormat gst_format = drm_to_gst_format(stream_cfg.pixelFormat); + GstVideoFormat gst_format = pixel_format_to_gst_format(stream_cfg.pixelFormat); + guint i; + gint best_fixed = -1, best_in_range = -1; + GstStructure *s; + + /* + * These are delta weight computed from: + * ABS(width - stream_cfg.size.width) * ABS(height - stream_cfg.size.height) + */ + guint best_fixed_delta = G_MAXUINT; + guint best_in_range_delta = G_MAXUINT; /* First fixate the caps using default configuration value. */ g_assert(gst_caps_is_writable(caps)); - caps = gst_caps_truncate(caps); - GstStructure *s = gst_caps_get_structure(caps, 0); - gst_structure_fixate_field_nearest_int(s, "width", stream_cfg.size.width); - gst_structure_fixate_field_nearest_int(s, "height", stream_cfg.size.height); + /* Lookup the structure for a close match to the stream_cfg.size */ + for (i = 0; i < gst_caps_get_size(caps); i++) { + s = gst_caps_get_structure(caps, i); + gint width, height; + guint delta; + + if (gst_structure_has_field_typed(s, "width", G_TYPE_INT) && + gst_structure_has_field_typed(s, "height", G_TYPE_INT)) { + gst_structure_get_int(s, "width", &width); + gst_structure_get_int(s, "height", &height); + + delta = ABS(width - (gint)stream_cfg.size.width) * ABS(height - (gint)stream_cfg.size.height); + + if (delta < best_fixed_delta) { + best_fixed_delta = delta; + best_fixed = i; + } + } else { + gst_structure_fixate_field_nearest_int(s, "width", stream_cfg.size.width); + gst_structure_fixate_field_nearest_int(s, "height", stream_cfg.size.height); + gst_structure_get_int(s, "width", &width); + gst_structure_get_int(s, "height", &height); + + delta = ABS(width - (gint)stream_cfg.size.width) * ABS(height - (gint)stream_cfg.size.height); + + if (delta < best_in_range_delta) { + best_in_range_delta = delta; + best_in_range = i; + } + } + } + + /* Prefer reliable fixed value over ranges */ + if (best_fixed >= 0) + s = gst_caps_get_structure(caps, best_fixed); + else + s = gst_caps_get_structure(caps, best_in_range); if (gst_structure_has_name(s, "video/x-raw")) { const gchar *format = gst_video_format_to_string(gst_format); @@ -154,9 +475,12 @@ gst_libcamera_configure_stream_from_caps(StreamConfiguration &stream_cfg, if (gst_structure_has_name(s, "video/x-raw")) { const gchar *format = gst_structure_get_string(s, "format"); gst_format = gst_video_format_from_string(format); - stream_cfg.pixelFormat = PixelFormat(gst_format_to_drm(gst_format)); + stream_cfg.pixelFormat = gst_format_to_pixel_format(gst_format); + } else if (gst_structure_has_name(s, "video/x-bayer")) { + const gchar *format = gst_structure_get_string(s, "format"); + stream_cfg.pixelFormat = bayer_format_from_string(format); } else if (gst_structure_has_name(s, "image/jpeg")) { - stream_cfg.pixelFormat = PixelFormat(DRM_FORMAT_MJPEG); + stream_cfg.pixelFormat = formats::MJPEG; } else { g_critical("Unsupported media type: %s", gst_structure_get_name(s)); } @@ -166,15 +490,131 @@ gst_libcamera_configure_stream_from_caps(StreamConfiguration &stream_cfg, gst_structure_get_int(s, "height", &height); stream_cfg.size.width = width; stream_cfg.size.height = height; + + /* Configure colorimetry */ + if (gst_structure_has_field(s, "colorimetry")) { + const gchar *colorimetry_str = gst_structure_get_string(s, "colorimetry"); + GstVideoColorimetry colorimetry; + + if (!gst_video_colorimetry_from_string(&colorimetry, colorimetry_str)) + g_critical("Invalid colorimetry %s", colorimetry_str); + + stream_cfg.colorSpace = colorspace_from_colorimetry(colorimetry, transfer); + } } -void -gst_libcamera_resume_task(GstTask *task) +void gst_libcamera_get_framerate_from_caps(GstCaps *caps, + GstStructure *element_caps) +{ + GstStructure *s = gst_caps_get_structure(caps, 0); + /* + * Default to 30 fps. If the "framerate" fraction is invalid below, + * libcamerasrc will set 30fps as the framerate. + */ + gint fps_n = 30, fps_d = 1; + + if (gst_structure_has_field_typed(s, "framerate", GST_TYPE_FRACTION)) { + if (!gst_structure_get_fraction(s, "framerate", &fps_n, &fps_d)) + GST_WARNING("Invalid framerate in the caps"); + } + + gst_structure_set(element_caps, "framerate", GST_TYPE_FRACTION, + fps_n, fps_d, nullptr); +} + +void gst_libcamera_clamp_and_set_frameduration(ControlList &initCtrls, + const ControlInfoMap &cam_ctrls, + GstStructure *element_caps) +{ + gint fps_caps_n, fps_caps_d; + + if (!gst_structure_has_field_typed(element_caps, "framerate", GST_TYPE_FRACTION)) + return; + + auto iterFrameDuration = cam_ctrls.find(&controls::FrameDurationLimits); + if (iterFrameDuration == cam_ctrls.end()) { + GST_WARNING("FrameDurationLimits not found in camera controls."); + return; + } + + const GValue *framerate = gst_structure_get_value(element_caps, "framerate"); + + fps_caps_n = gst_value_get_fraction_numerator(framerate); + fps_caps_d = gst_value_get_fraction_denominator(framerate); + + int64_t target_duration = (fps_caps_d * 1000000.0) / fps_caps_n; + int64_t min_frame_duration = iterFrameDuration->second.min().get<int64_t>(); + int64_t max_frame_duration = iterFrameDuration->second.max().get<int64_t>(); + + int64_t frame_duration = std::clamp(target_duration, + min_frame_duration, + max_frame_duration); + + if (frame_duration != target_duration) { + gint framerate_clamped = 1000000 / frame_duration; + + /* + * Update the clamped framerate which then will be exposed in + * downstream caps. + */ + gst_structure_set(element_caps, "framerate", GST_TYPE_FRACTION, + framerate_clamped, 1, nullptr); + } + + initCtrls.set(controls::FrameDurationLimits, + { frame_duration, frame_duration }); +} + +void gst_libcamera_framerate_to_caps(GstCaps *caps, const GstStructure *element_caps) +{ + const GValue *framerate = gst_structure_get_value(element_caps, "framerate"); + if (!GST_VALUE_HOLDS_FRACTION(framerate)) + return; + + GstStructure *s = gst_caps_get_structure(caps, 0); + gint fps_caps_n, fps_caps_d; + + fps_caps_n = gst_value_get_fraction_numerator(framerate); + fps_caps_d = gst_value_get_fraction_denominator(framerate); + + gst_structure_set(s, "framerate", GST_TYPE_FRACTION, fps_caps_n, fps_caps_d, nullptr); +} + +#if !GST_CHECK_VERSION(1, 17, 1) +gboolean +gst_task_resume(GstTask *task) { /* We only want to resume the task if it's paused. */ GLibLocker lock(GST_OBJECT(task)); - if (GST_TASK_STATE(task) == GST_TASK_PAUSED) { - GST_TASK_STATE(task) = GST_TASK_STARTED; - GST_TASK_SIGNAL(task); + if (GST_TASK_STATE(task) != GST_TASK_PAUSED) + return FALSE; + + GST_TASK_STATE(task) = GST_TASK_STARTED; + GST_TASK_SIGNAL(task); + return TRUE; +} +#endif + +G_LOCK_DEFINE_STATIC(cm_singleton_lock); +static std::weak_ptr<CameraManager> cm_singleton_ptr; + +std::shared_ptr<CameraManager> +gst_libcamera_get_camera_manager(int &ret) +{ + std::shared_ptr<CameraManager> cm; + + G_LOCK(cm_singleton_lock); + + cm = cm_singleton_ptr.lock(); + if (!cm) { + cm = std::make_shared<CameraManager>(); + cm_singleton_ptr = cm; + ret = cm->start(); + } else { + ret = 0; } + + G_UNLOCK(cm_singleton_lock); + + return cm; } |