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123 lines
3.6 KiB
C
123 lines
3.6 KiB
C
/* GStreamer
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* Copyright (C) 2020 Collabora Ltd.
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* Author: Nicolas Dufresne <nicolas.dufresne@collabora.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#include "gstv4l2codecpool.h"
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struct _GstV4l2CodecPool
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{
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GstBufferPool parent;
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GstAtomicQueue *queue;
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GstV4l2CodecAllocator *allocator;
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};
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G_DEFINE_TYPE (GstV4l2CodecPool, gst_v4l2_codec_pool, GST_TYPE_BUFFER_POOL);
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static GstFlowReturn
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gst_v4l2_codec_pool_acquire_buffer (GstBufferPool * pool, GstBuffer ** buffer,
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GstBufferPoolAcquireParams * params)
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{
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GstV4l2CodecPool *self = GST_V4L2_CODEC_POOL (pool);
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GstBuffer *buf = gst_atomic_queue_pop (self->queue);
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if (!buf)
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return GST_FLOW_ERROR;
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if (!gst_v4l2_codec_allocator_prepare_buffer (self->allocator, buf))
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return GST_FLOW_ERROR;
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*buffer = buf;
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return GST_FLOW_OK;
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}
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static void
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gst_v4l2_codec_pool_reset_buffer (GstBufferPool * pool, GstBuffer * buffer)
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{
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GstBufferPoolClass *klass =
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GST_BUFFER_POOL_CLASS (gst_v4l2_codec_pool_parent_class);
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/* Clears all the memories and only pool the GstBuffer objects */
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gst_buffer_remove_all_memory (buffer);
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klass->reset_buffer (pool, buffer);
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GST_BUFFER_FLAGS (buffer) = 0;
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}
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static void
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gst_v4l2_codec_pool_release_buffer (GstBufferPool * pool, GstBuffer * buffer)
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{
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GstV4l2CodecPool *self = GST_V4L2_CODEC_POOL (pool);
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gst_atomic_queue_push (self->queue, buffer);
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}
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static void
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gst_v4l2_codec_pool_init (GstV4l2CodecPool * self)
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{
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self->queue = gst_atomic_queue_new (4);
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}
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static void
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gst_v4l2_codec_pool_finalize (GObject * object)
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{
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GstV4l2CodecPool *self = GST_V4L2_CODEC_POOL (object);
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GstBuffer *buf;
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while ((buf = gst_atomic_queue_pop (self->queue)))
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gst_buffer_unref (buf);
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gst_atomic_queue_unref (self->queue);
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g_object_unref (self->allocator);
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G_OBJECT_CLASS (gst_v4l2_codec_pool_parent_class)->finalize (object);
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}
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static void
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gst_v4l2_codec_pool_class_init (GstV4l2CodecPoolClass * klass)
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{
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GObjectClass *object_class = G_OBJECT_CLASS (klass);
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GstBufferPoolClass *pool_class = GST_BUFFER_POOL_CLASS (klass);
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object_class->finalize = gst_v4l2_codec_pool_finalize;
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pool_class->start = NULL;
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pool_class->acquire_buffer = gst_v4l2_codec_pool_acquire_buffer;
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pool_class->reset_buffer = gst_v4l2_codec_pool_reset_buffer;
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pool_class->release_buffer = gst_v4l2_codec_pool_release_buffer;
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}
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GstV4l2CodecPool *
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gst_v4l2_codec_pool_new (GstV4l2CodecAllocator * allocator)
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{
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GstV4l2CodecPool *pool = g_object_new (GST_TYPE_V4L2_CODEC_POOL, NULL);
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gsize pool_size;
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pool->allocator = g_object_ref (allocator);
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pool_size = gst_v4l2_codec_allocator_get_pool_size (allocator);
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for (gsize i = 0; i < pool_size; i++) {
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GstBuffer *buffer = gst_buffer_new ();
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gst_atomic_queue_push (pool->queue, buffer);
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}
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return pool;
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}
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guint32
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gst_v4l2_codec_buffer_get_index (GstBuffer * buffer)
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{
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GstMemory *mem = gst_buffer_peek_memory (buffer, 0);
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return gst_v4l2_codec_memory_get_index (mem);
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}
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