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FFmpeg/libavcodec/vaapi.c
Gwenole Beauchesne babd340f58 vaapi: streamline public context structure. 
Move libavcodec managed objects from the public struct vaapi_context
to a new privately owned FFVAContext. This is done so that to clean up
and streamline the public structure, but also to prepare for new codec
support, thus requiring new internal data to be added in there.

The AVCodecContext.hwaccel_context, that holds the public vaapi_context,
shall no longer be accessed from within vaapi_*.c codec support files.

Signed-off-by: Gwenole Beauchesne <gwenole.beauchesne@intel.com>
2015-08-19 14:03:24 +02:00

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/*
* Video Acceleration API (video decoding)
* HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
*
* Copyright (C) 2008-2009 Splitted-Desktop Systems
*
* This file is part of FFmpeg.
*
* FFmpeg 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.
*
* FFmpeg 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 FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "libavutil/log.h"
#include "h264.h"
#include "vaapi_internal.h"
/**
* @addtogroup VAAPI_Decoding
*
* @{
*/
static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
{
unsigned int i;
for (i = 0; i < n_buffers; i++) {
if (buffers[i]) {
vaDestroyBuffer(display, buffers[i]);
buffers[i] = 0;
}
}
}
int ff_vaapi_context_init(AVCodecContext *avctx)
{
FFVAContext * const vactx = ff_vaapi_get_context(avctx);
const struct vaapi_context * const user_vactx = avctx->hwaccel_context;
if (!user_vactx) {
av_log(avctx, AV_LOG_ERROR, "Hardware acceleration context (hwaccel_context) does not exist.\n");
return AVERROR(ENOSYS);
}
vactx->display = user_vactx->display;
vactx->config_id = user_vactx->config_id;
vactx->context_id = user_vactx->context_id;
return 0;
}
int ff_vaapi_context_fini(AVCodecContext *avctx)
{
return 0;
}
int ff_vaapi_render_picture(FFVAContext *vactx, VASurfaceID surface)
{
VABufferID va_buffers[3];
unsigned int n_va_buffers = 0;
if (!vactx->pic_param_buf_id)
return 0;
vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
if (vactx->iq_matrix_buf_id) {
vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
}
if (vactx->bitplane_buf_id) {
vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
}
if (vaBeginPicture(vactx->display, vactx->context_id,
surface) != VA_STATUS_SUCCESS)
return -1;
if (vaRenderPicture(vactx->display, vactx->context_id,
va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
return -1;
if (vaRenderPicture(vactx->display, vactx->context_id,
vactx->slice_buf_ids,
vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
return -1;
if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
return -1;
return 0;
}
int ff_vaapi_commit_slices(FFVAContext *vactx)
{
VABufferID *slice_buf_ids;
VABufferID slice_param_buf_id, slice_data_buf_id;
if (vactx->slice_count == 0)
return 0;
slice_buf_ids =
av_fast_realloc(vactx->slice_buf_ids,
&vactx->slice_buf_ids_alloc,
(vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
if (!slice_buf_ids)
return -1;
vactx->slice_buf_ids = slice_buf_ids;
slice_param_buf_id = 0;
if (vaCreateBuffer(vactx->display, vactx->context_id,
VASliceParameterBufferType,
vactx->slice_param_size,
vactx->slice_count, vactx->slice_params,
&slice_param_buf_id) != VA_STATUS_SUCCESS)
return -1;
vactx->slice_count = 0;
slice_data_buf_id = 0;
if (vaCreateBuffer(vactx->display, vactx->context_id,
VASliceDataBufferType,
vactx->slice_data_size,
1, (void *)vactx->slice_data,
&slice_data_buf_id) != VA_STATUS_SUCCESS)
return -1;
vactx->slice_data = NULL;
vactx->slice_data_size = 0;
slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
return 0;
}
static void *alloc_buffer(FFVAContext *vactx, int type, unsigned int size, uint32_t *buf_id)
{
void *data = NULL;
*buf_id = 0;
if (vaCreateBuffer(vactx->display, vactx->context_id,
type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
vaMapBuffer(vactx->display, *buf_id, &data);
return data;
}
void *ff_vaapi_alloc_pic_param(FFVAContext *vactx, unsigned int size)
{
return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
}
void *ff_vaapi_alloc_iq_matrix(FFVAContext *vactx, unsigned int size)
{
return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
}
uint8_t *ff_vaapi_alloc_bitplane(FFVAContext *vactx, uint32_t size)
{
return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
}
VASliceParameterBufferBase *ff_vaapi_alloc_slice(FFVAContext *vactx, const uint8_t *buffer, uint32_t size)
{
uint8_t *slice_params;
VASliceParameterBufferBase *slice_param;
if (!vactx->slice_data)
vactx->slice_data = buffer;
if (vactx->slice_data + vactx->slice_data_size != buffer) {
if (ff_vaapi_commit_slices(vactx) < 0)
return NULL;
vactx->slice_data = buffer;
}
slice_params =
av_fast_realloc(vactx->slice_params,
&vactx->slice_params_alloc,
(vactx->slice_count + 1) * vactx->slice_param_size);
if (!slice_params)
return NULL;
vactx->slice_params = slice_params;
slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
slice_param->slice_data_size = size;
slice_param->slice_data_offset = vactx->slice_data_size;
slice_param->slice_data_flag = VA_SLICE_DATA_FLAG_ALL;
vactx->slice_count++;
vactx->slice_data_size += size;
return slice_param;
}
void ff_vaapi_common_end_frame(AVCodecContext *avctx)
{
FFVAContext * const vactx = ff_vaapi_get_context(avctx);
ff_dlog(avctx, "ff_vaapi_common_end_frame()\n");
destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
av_freep(&vactx->slice_buf_ids);
av_freep(&vactx->slice_params);
vactx->n_slice_buf_ids = 0;
vactx->slice_buf_ids_alloc = 0;
vactx->slice_count = 0;
vactx->slice_params_alloc = 0;
}
#if CONFIG_H263_VAAPI_HWACCEL || CONFIG_MPEG1_VAAPI_HWACCEL || \
CONFIG_MPEG2_VAAPI_HWACCEL || CONFIG_MPEG4_VAAPI_HWACCEL || \
CONFIG_VC1_VAAPI_HWACCEL || CONFIG_WMV3_VAAPI_HWACCEL
int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx)
{
FFVAContext * const vactx = ff_vaapi_get_context(avctx);
MpegEncContext *s = avctx->priv_data;
int ret;
ret = ff_vaapi_commit_slices(vactx);
if (ret < 0)
goto finish;
ret = ff_vaapi_render_picture(vactx,
ff_vaapi_get_surface_id(s->current_picture_ptr->f));
if (ret < 0)
goto finish;
ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
finish:
ff_vaapi_common_end_frame(avctx);
return ret;
}
#endif
/* @} */
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