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authorJacopo Mondi <jacopo.mondi@ideasonboard.com>2024-12-16 16:40:53 +0100
committerStefan Klug <stefan.klug@ideasonboard.com>2024-12-17 11:19:36 +0100
commit0ce20a8cd59ad2e2d43fdc9b4ff64053db7f01a5 (patch)
treea89cfa9da732d9eb9919d9d873d8ca1d4e9dc583 /src/libcamera/pipeline/rpi/common/pipeline_base.cpp
parenta631af61af44ffa350b70c73d3fdbc8943655e52 (diff)
libcamera: converter: Add functions to adjust config
Add to the Converter interface two functions used by pipeline handlers to validate and adjust the converter input and output configurations by specifying the desired alignment for the adjustment. Add the adjustInputSize() and adjustOutputSize() functions that allows to adjust the converter input/output sizes with the desired alignment. Add a validateOutput() function meant to be used by the pipeline handler implementations of validate(). The function adjusts a StreamConfiguration to a valid configuration produced by the Converter. Signed-off-by: Jacopo Mondi <jacopo.mondi@ideasonboard.com> Reviewed-by: Stefan Klug <stefan.klug@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com> Signed-off-by: Stefan Klug <stefan.klug@ideasonboard.com>
Diffstat (limited to 'src/libcamera/pipeline/rpi/common/pipeline_base.cpp')
0 files changed, 0 insertions, 0 deletions
generated by cgit v1.2.1 (git 2.18.0) at 2025-06-12 16:36:56 +0000
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/* SPDX-License-Identifier: LGPL-2.1-or-later */
/*
 * Copyright (C) 2020, Collabora Ltd.
 *     Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
 *
 * gstlibcamerapool.cpp - GStreamer Buffer Pool
 */

#include "gstlibcamerapool.h"

#include <libcamera/stream.h>

#include "gstlibcamera-utils.h"

using namespace libcamera;

enum {
	SIGNAL_BUFFER_NOTIFY,
	N_SIGNALS
};

static guint signals[N_SIGNALS];

struct _GstLibcameraPool {
	GstBufferPool parent;

	GstAtomicQueue *queue;
	GstLibcameraAllocator *allocator;
	Stream *stream;
};

G_DEFINE_TYPE(GstLibcameraPool, gst_libcamera_pool, GST_TYPE_BUFFER_POOL)

static GstFlowReturn
gst_libcamera_pool_acquire_buffer(GstBufferPool *pool, GstBuffer **buffer,
				  [[maybe_unused]] GstBufferPoolAcquireParams *params)
{
	GstLibcameraPool *self = GST_LIBCAMERA_POOL(pool);
	GstBuffer *buf = GST_BUFFER(gst_atomic_queue_pop(self->queue));
	if (!buf)
		return GST_FLOW_ERROR;

	if (!gst_libcamera_allocator_prepare_buffer(self->allocator, self->stream, buf)) {
		gst_atomic_queue_push(self->queue, buf);
		return GST_FLOW_ERROR;
	}

	*buffer = buf;
	return GST_FLOW_OK;
}

static void
gst_libcamera_pool_reset_buffer(GstBufferPool *pool, GstBuffer *buffer)
{
	GstBufferPoolClass *klass = GST_BUFFER_POOL_CLASS(gst_libcamera_pool_parent_class);

	/* Clears all the memories and only pool the GstBuffer objects */
	gst_buffer_remove_all_memory(buffer);
	klass->reset_buffer(pool, buffer);
	GST_BUFFER_FLAGS(buffer) = 0;
}

static void
gst_libcamera_pool_release_buffer(GstBufferPool *pool, GstBuffer *buffer)
{
	GstLibcameraPool *self = GST_LIBCAMERA_POOL(pool);
	bool do_notify = gst_atomic_queue_length(self->queue) == 0;

	gst_atomic_queue_push(self->queue, buffer);

	if (do_notify)
		g_signal_emit(self, signals[SIGNAL_BUFFER_NOTIFY], 0);
}

static void
gst_libcamera_pool_init(GstLibcameraPool *self)
{
	self->queue = gst_atomic_queue_new(4);
}

static void
gst_libcamera_pool_finalize(GObject *object)
{
	GstLibcameraPool *self = GST_LIBCAMERA_POOL(object);
	GstBuffer *buf;

	while ((buf = GST_BUFFER(gst_atomic_queue_pop(self->queue))))
		gst_buffer_unref(buf);