diff options
| -rw-r--r-- | src/gstreamer/gstlibcamera-utils.cpp | 64 | ||||
| -rw-r--r-- | src/gstreamer/gstlibcamera-utils.h | 3 |
2 files changed, 67 insertions, 0 deletions
diff --git a/src/gstreamer/gstlibcamera-utils.cpp b/src/gstreamer/gstlibcamera-utils.cpp index 386ec364..482439a8 100644 --- a/src/gstreamer/gstlibcamera-utils.cpp +++ b/src/gstreamer/gstlibcamera-utils.cpp @@ -42,6 +42,18 @@ drm_to_gst_format(guint drm_fourcc) return GST_VIDEO_FORMAT_UNKNOWN; } +static guint +gst_format_to_drm(GstVideoFormat gst_format) +{ + if (gst_format == GST_VIDEO_FORMAT_ENCODED) + return DRM_FORMAT_INVALID; + + for (const auto &item : format_map) + if (item.gst_format == gst_format) + return item.drm_fourcc; + return DRM_FORMAT_INVALID; +} + static GstStructure * bare_structure_from_fourcc(guint fourcc) { @@ -103,3 +115,55 @@ gst_libcamera_stream_formats_to_caps(const StreamFormats &formats) return caps; } + +GstCaps * +gst_libcamera_stream_configuration_to_caps(const StreamConfiguration &stream_cfg) +{ + GstCaps *caps = gst_caps_new_empty(); + GstStructure *s = bare_structure_from_fourcc(stream_cfg.pixelFormat); + + gst_structure_set(s, + "width", G_TYPE_INT, stream_cfg.size.width, + "height", G_TYPE_INT, stream_cfg.size.height, + nullptr); + gst_caps_append_structure(caps, s); + + return caps; +} + +void +gst_libcamera_configure_stream_from_caps(StreamConfiguration &stream_cfg, + GstCaps *caps) +{ + GstVideoFormat gst_format = drm_to_gst_format(stream_cfg.pixelFormat); + + /* 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); + + if (gst_structure_has_name(s, "video/x-raw")) { + const gchar *format = gst_video_format_to_string(gst_format); + gst_structure_fixate_field_string(s, "format", format); + } + + /* Then configure the stream with the result. */ + 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 = gst_format_to_drm(gst_format); + } else if (gst_structure_has_name(s, "image/jpeg")) { + stream_cfg.pixelFormat = DRM_FORMAT_MJPEG; + } else { + g_critical("Unsupported media type: %s", gst_structure_get_name(s)); + } + + gint width, height; + gst_structure_get_int(s, "width", &width); + gst_structure_get_int(s, "height", &height); + stream_cfg.size.width = width; + stream_cfg.size.height = height; +} diff --git a/src/gstreamer/gstlibcamera-utils.h b/src/gstreamer/gstlibcamera-utils.h index 562ffe97..cbfb1cc0 100644 --- a/src/gstreamer/gstlibcamera-utils.h +++ b/src/gstreamer/gstlibcamera-utils.h @@ -15,6 +15,9 @@ #include <libcamera/stream.h> GstCaps *gst_libcamera_stream_formats_to_caps(const libcamera::StreamFormats &formats); +GstCaps *gst_libcamera_stream_configuration_to_caps(const libcamera::StreamConfiguration &stream_cfg); +void gst_libcamera_configure_stream_from_caps(libcamera::StreamConfiguration &stream_cfg, + GstCaps *caps); /** * \class GLibLocker |