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/**************************************************************************
*
* Copyright 2013 Advanced Micro Devices, Inc.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sub license, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice (including the
* next paragraph) shall be included in all copies or substantial portions
* of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
* IN NO EVENT SHALL THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*
**************************************************************************/
#include <unistd.h>
#include "util/u_memory.h"
#include "util/u_video.h"
#include "vl/vl_defines.h"
#include "vl/vl_video_buffer.h"
#include "radeonsi/si_pipe.h"
#include "radeon_video.h"
#include "radeon_vce.h"
/* generate an stream handle */
unsigned si_vid_alloc_stream_handle()
{
static unsigned counter = 0;
unsigned stream_handle = 0;
unsigned pid = getpid();
int i;
for (i = 0; i < 32; ++i)
stream_handle |= ((pid >> i) & 1) << (31 - i);
stream_handle ^= ++counter;
return stream_handle;
}
/* create a buffer in the winsys */
bool si_vid_create_buffer(struct pipe_screen *screen, struct rvid_buffer *buffer,
unsigned size, unsigned usage)
{
memset(buffer, 0, sizeof(*buffer));
buffer->usage = usage;
/* Hardware buffer placement restrictions require the kernel to be
* able to move buffers around individually, so request a
* non-sub-allocated buffer.
*/
buffer->res = si_resource(pipe_buffer_create(screen, PIPE_BIND_SHARED,
usage, size));
return buffer->res != NULL;
}
/* destroy a buffer */
void si_vid_destroy_buffer(struct rvid_buffer *buffer)
{
si_resource_reference(&buffer->res, NULL);
}
/* reallocate a buffer, preserving its content */
bool si_vid_resize_buffer(struct pipe_screen *screen, struct radeon_cmdbuf *cs,
struct rvid_buffer *new_buf, unsigned new_size)
{
struct si_screen *sscreen = (struct si_screen *)screen;
struct radeon_winsys* ws = sscreen->ws;
unsigned bytes = MIN2(new_buf->res->buf->size, new_size);
struct rvid_buffer old_buf = *new_buf;
void *src = NULL, *dst = NULL;
if (!si_vid_create_buffer(screen, new_buf, new_size, new_buf->usage))
goto error;
src = ws->buffer_map(old_buf.res->buf, cs,
PIPE_TRANSFER_READ | RADEON_TRANSFER_TEMPORARY);
if (!src)
goto error;
dst = ws->buffer_map(new_buf->res->buf, cs,
PIPE_TRANSFER_WRITE | RADEON_TRANSFER_TEMPORARY);
if (!dst)
goto error;
memcpy(dst, src, bytes);
if (new_size > bytes) {
new_size -= bytes;
dst += bytes;
memset(dst, 0, new_size);
}
ws->buffer_unmap(new_buf->res->buf);
ws->buffer_unmap(old_buf.res->buf);
si_vid_destroy_buffer(&old_buf);
return true;
error:
if (src)
ws->buffer_unmap(old_buf.res->buf);
si_vid_destroy_buffer(new_buf);
*new_buf = old_buf;
return false;
}
/* clear the buffer with zeros */
void si_vid_clear_buffer(struct pipe_context *context, struct rvid_buffer* buffer)
{
struct si_context *sctx = (struct si_context*)context;
si_sdma_clear_buffer(sctx, &buffer->res->b.b, 0, buffer->res->b.b.width0, 0);
context->flush(context, NULL, 0);
}
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