gstreamer/subprojects/gstreamer-vaapi/gst-libs/gst/vaapi/gstvaapicodedbuffer.c

251 lines
6.7 KiB
C

/*
* gstvaapicodedbuffer.c - VA coded buffer abstraction
*
* Copyright (C) 2013 Intel Corporation
* Author: Wind Yuan <feng.yuan@intel.com>
* Author: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1
* of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free
* Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "sysdeps.h"
#include "gstvaapicodedbuffer.h"
#include "gstvaapicodedbuffer_priv.h"
#include "gstvaapiencoder_priv.h"
#include "gstvaapiutils.h"
#define DEBUG 1
#include "gstvaapidebug.h"
static gboolean
coded_buffer_create (GstVaapiCodedBuffer * buf, guint buf_size,
GstVaapiContext * context)
{
GstVaapiDisplay *const display = GST_VAAPI_CODED_BUFFER_DISPLAY (buf);
VABufferID buf_id;
gboolean success;
GST_VAAPI_DISPLAY_LOCK (display);
success = vaapi_create_buffer (GST_VAAPI_DISPLAY_VADISPLAY (display),
GST_VAAPI_CONTEXT_ID (context), VAEncCodedBufferType, buf_size,
NULL, &buf_id, NULL);
GST_VAAPI_DISPLAY_UNLOCK (display);
if (!success)
return FALSE;
GST_DEBUG ("coded buffer %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS (buf_id));
GST_VAAPI_CODED_BUFFER_ID (buf) = buf_id;
return TRUE;
}
static void
coded_buffer_free (GstVaapiCodedBuffer * buf)
{
GstVaapiDisplay *const display = GST_VAAPI_CODED_BUFFER_DISPLAY (buf);
VABufferID buf_id;
buf_id = GST_VAAPI_CODED_BUFFER_ID (buf);
GST_DEBUG ("coded buffer %" GST_VAAPI_ID_FORMAT, GST_VAAPI_ID_ARGS (buf_id));
if (buf_id != VA_INVALID_ID) {
GST_VAAPI_DISPLAY_LOCK (display);
vaapi_destroy_buffer (GST_VAAPI_DISPLAY_VADISPLAY (display), &buf_id);
GST_VAAPI_DISPLAY_UNLOCK (display);
GST_VAAPI_CODED_BUFFER_ID (buf) = VA_INVALID_ID;
}
gst_vaapi_display_replace (&GST_VAAPI_CODED_BUFFER_DISPLAY (buf), NULL);
g_slice_free1 (sizeof (GstVaapiCodedBuffer), buf);
}
static gboolean
coded_buffer_map (GstVaapiCodedBuffer * buf)
{
GstVaapiDisplay *const display = GST_VAAPI_CODED_BUFFER_DISPLAY (buf);
if (buf->segment_list)
return TRUE;
GST_VAAPI_DISPLAY_LOCK (display);
buf->segment_list =
vaapi_map_buffer (GST_VAAPI_DISPLAY_VADISPLAY (display),
GST_VAAPI_CODED_BUFFER_ID (buf));
GST_VAAPI_DISPLAY_UNLOCK (display);
return buf->segment_list != NULL;
}
static void
coded_buffer_unmap (GstVaapiCodedBuffer * buf)
{
GstVaapiDisplay *const display = GST_VAAPI_CODED_BUFFER_DISPLAY (buf);
if (!buf->segment_list)
return;
GST_VAAPI_DISPLAY_LOCK (display);
vaapi_unmap_buffer (GST_VAAPI_DISPLAY_VADISPLAY (display),
GST_VAAPI_CODED_BUFFER_ID (buf), (void **) &buf->segment_list);
GST_VAAPI_DISPLAY_UNLOCK (display);
}
GST_DEFINE_MINI_OBJECT_TYPE (GstVaapiCodedBuffer, gst_vaapi_coded_buffer);
/*
* gst_vaapi_coded_buffer_new:
* @context: the parent #GstVaapiContext object
* @buf_size: the buffer size in bytes
*
* Creates a new VA coded buffer bound to the supplied @context.
*
* Return value: the newly allocated #GstVaapiCodedBuffer object, or
* %NULL if an error occurred
*/
GstVaapiCodedBuffer *
gst_vaapi_coded_buffer_new (GstVaapiContext * context, guint buf_size)
{
GstVaapiCodedBuffer *buf;
GstVaapiDisplay *display;
g_return_val_if_fail (context != NULL, NULL);
g_return_val_if_fail (buf_size > 0, NULL);
display = GST_VAAPI_CONTEXT_DISPLAY (context);
g_return_val_if_fail (display != NULL, NULL);
buf = g_slice_new (GstVaapiCodedBuffer);
if (!buf)
return NULL;
gst_mini_object_init (GST_MINI_OBJECT_CAST (buf), 0,
GST_TYPE_VAAPI_CODED_BUFFER, NULL, NULL,
(GstMiniObjectFreeFunction) coded_buffer_free);
GST_VAAPI_CODED_BUFFER_DISPLAY (buf) = gst_object_ref (display);
GST_VAAPI_CODED_BUFFER_ID (buf) = VA_INVALID_ID;
buf->segment_list = NULL;
if (!coded_buffer_create (buf, buf_size, context))
goto error;
return buf;
/* ERRORS */
error:
{
gst_vaapi_coded_buffer_unref (buf);
return NULL;
}
}
/*
* gst_vaapi_coded_buffer_map:
* @buf: a #GstVaapiCodedBuffer
* @data: pointer to the mapped buffer data (VACodedBufferSegment)
*
* Maps the VA coded buffer and returns the data pointer into @data.
*
* Return value: %TRUE if successful, %FALSE otherwise
*/
gboolean
gst_vaapi_coded_buffer_map (GstVaapiCodedBuffer * buf,
VACodedBufferSegment ** out_segment_list_ptr)
{
g_return_val_if_fail (buf != NULL, FALSE);
g_return_val_if_fail (out_segment_list_ptr != NULL, FALSE);
if (!coded_buffer_map (buf))
return FALSE;
*out_segment_list_ptr = buf->segment_list;
return TRUE;
}
/*
* gst_vaapi_coded_buffer_unmap:
* @buf: a #GstVaapiCodedBuffer
*
* Unamps the VA coded buffer.
*/
void
gst_vaapi_coded_buffer_unmap (GstVaapiCodedBuffer * buf)
{
g_return_if_fail (buf != NULL);
coded_buffer_unmap (buf);
}
/**
* gst_vaapi_coded_buffer_get_size:
* @buf: a #GstVaapiCodedBuffer
*
* Returns the VA coded buffer size in bytes. That represents the
* exact buffer size, as filled in so far, not the size of the
* allocated buffer.
*
* Return value: the size of the VA coded buffer, or -1 on error
*/
gssize
gst_vaapi_coded_buffer_get_size (GstVaapiCodedBuffer * buf)
{
VACodedBufferSegment *segment;
gssize size;
g_return_val_if_fail (buf != NULL, -1);
if (!coded_buffer_map (buf))
return -1;
size = 0;
for (segment = buf->segment_list; segment != NULL; segment = segment->next)
size += segment->size;
coded_buffer_unmap (buf);
return size;
}
/**
* gst_vaapi_coded_buffer_copy_into:
* @dest: the destination #GstBuffer
* @src: the source #GstVaapiCodedBuffer
*
* Copies the coded buffer data from @src into the regular buffer @dest.
*
* Return value: %TRUE if successful, %FALSE otherwise
*/
gboolean
gst_vaapi_coded_buffer_copy_into (GstBuffer * dest, GstVaapiCodedBuffer * src)
{
VACodedBufferSegment *segment;
goffset offset;
gsize size;
g_return_val_if_fail (src != NULL, FALSE);
g_return_val_if_fail (dest != NULL, FALSE);
if (!coded_buffer_map (src))
return FALSE;
offset = 0;
for (segment = src->segment_list; segment != NULL; segment = segment->next) {
size = gst_buffer_fill (dest, offset, segment->buf, segment->size);
if (size != segment->size)
break;
offset += segment->size;
}
coded_buffer_unmap (src);
return segment == NULL;
}