| /************************************************************************** |
| * |
| * 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); |
| } |