yading@10: /*
yading@10:  * Video Acceleration API (video decoding)
yading@10:  * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
yading@10:  *
yading@10:  * Copyright (C) 2008-2009 Splitted-Desktop Systems
yading@10:  *
yading@10:  * This file is part of FFmpeg.
yading@10:  *
yading@10:  * FFmpeg is free software; you can redistribute it and/or
yading@10:  * modify it under the terms of the GNU Lesser General Public
yading@10:  * License as published by the Free Software Foundation; either
yading@10:  * version 2.1 of the License, or (at your option) any later version.
yading@10:  *
yading@10:  * FFmpeg is distributed in the hope that it will be useful,
yading@10:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
yading@10:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
yading@10:  * Lesser General Public License for more details.
yading@10:  *
yading@10:  * You should have received a copy of the GNU Lesser General Public
yading@10:  * License along with FFmpeg; if not, write to the Free Software
yading@10:  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
yading@10:  */
yading@10: 
yading@10: #include "h264.h"
yading@10: #include "vaapi_internal.h"
yading@10: 
yading@10: /**
yading@10:  * @addtogroup VAAPI_Decoding
yading@10:  *
yading@10:  * @{
yading@10:  */
yading@10: 
yading@10: static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
yading@10: {
yading@10:     unsigned int i;
yading@10:     for (i = 0; i < n_buffers; i++) {
yading@10:         if (buffers[i]) {
yading@10:             vaDestroyBuffer(display, buffers[i]);
yading@10:             buffers[i] = 0;
yading@10:         }
yading@10:     }
yading@10: }
yading@10: 
yading@10: int ff_vaapi_render_picture(struct vaapi_context *vactx, VASurfaceID surface)
yading@10: {
yading@10:     VABufferID va_buffers[3];
yading@10:     unsigned int n_va_buffers = 0;
yading@10: 
yading@10:     vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
yading@10:     va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
yading@10: 
yading@10:     if (vactx->iq_matrix_buf_id) {
yading@10:         vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
yading@10:         va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
yading@10:     }
yading@10: 
yading@10:     if (vactx->bitplane_buf_id) {
yading@10:         vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
yading@10:         va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
yading@10:     }
yading@10: 
yading@10:     if (vaBeginPicture(vactx->display, vactx->context_id,
yading@10:                        surface) != VA_STATUS_SUCCESS)
yading@10:         return -1;
yading@10: 
yading@10:     if (vaRenderPicture(vactx->display, vactx->context_id,
yading@10:                         va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
yading@10:         return -1;
yading@10: 
yading@10:     if (vaRenderPicture(vactx->display, vactx->context_id,
yading@10:                         vactx->slice_buf_ids,
yading@10:                         vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
yading@10:         return -1;
yading@10: 
yading@10:     if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
yading@10:         return -1;
yading@10: 
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: int ff_vaapi_commit_slices(struct vaapi_context *vactx)
yading@10: {
yading@10:     VABufferID *slice_buf_ids;
yading@10:     VABufferID slice_param_buf_id, slice_data_buf_id;
yading@10: 
yading@10:     if (vactx->slice_count == 0)
yading@10:         return 0;
yading@10: 
yading@10:     slice_buf_ids =
yading@10:         av_fast_realloc(vactx->slice_buf_ids,
yading@10:                         &vactx->slice_buf_ids_alloc,
yading@10:                         (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
yading@10:     if (!slice_buf_ids)
yading@10:         return -1;
yading@10:     vactx->slice_buf_ids = slice_buf_ids;
yading@10: 
yading@10:     slice_param_buf_id = 0;
yading@10:     if (vaCreateBuffer(vactx->display, vactx->context_id,
yading@10:                        VASliceParameterBufferType,
yading@10:                        vactx->slice_param_size,
yading@10:                        vactx->slice_count, vactx->slice_params,
yading@10:                        &slice_param_buf_id) != VA_STATUS_SUCCESS)
yading@10:         return -1;
yading@10:     vactx->slice_count = 0;
yading@10: 
yading@10:     slice_data_buf_id = 0;
yading@10:     if (vaCreateBuffer(vactx->display, vactx->context_id,
yading@10:                        VASliceDataBufferType,
yading@10:                        vactx->slice_data_size,
yading@10:                        1, (void *)vactx->slice_data,
yading@10:                        &slice_data_buf_id) != VA_STATUS_SUCCESS)
yading@10:         return -1;
yading@10:     vactx->slice_data = NULL;
yading@10:     vactx->slice_data_size = 0;
yading@10: 
yading@10:     slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
yading@10:     slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: static void *alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
yading@10: {
yading@10:     void *data = NULL;
yading@10: 
yading@10:     *buf_id = 0;
yading@10:     if (vaCreateBuffer(vactx->display, vactx->context_id,
yading@10:                        type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
yading@10:         vaMapBuffer(vactx->display, *buf_id, &data);
yading@10: 
yading@10:     return data;
yading@10: }
yading@10: 
yading@10: void *ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
yading@10: {
yading@10:     return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
yading@10: }
yading@10: 
yading@10: void *ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
yading@10: {
yading@10:     return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
yading@10: }
yading@10: 
yading@10: uint8_t *ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
yading@10: {
yading@10:     return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
yading@10: }
yading@10: 
yading@10: VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
yading@10: {
yading@10:     uint8_t *slice_params;
yading@10:     VASliceParameterBufferBase *slice_param;
yading@10: 
yading@10:     if (!vactx->slice_data)
yading@10:         vactx->slice_data = buffer;
yading@10:     if (vactx->slice_data + vactx->slice_data_size != buffer) {
yading@10:         if (ff_vaapi_commit_slices(vactx) < 0)
yading@10:             return NULL;
yading@10:         vactx->slice_data = buffer;
yading@10:     }
yading@10: 
yading@10:     slice_params =
yading@10:         av_fast_realloc(vactx->slice_params,
yading@10:                         &vactx->slice_params_alloc,
yading@10:                         (vactx->slice_count + 1) * vactx->slice_param_size);
yading@10:     if (!slice_params)
yading@10:         return NULL;
yading@10:     vactx->slice_params = slice_params;
yading@10: 
yading@10:     slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
yading@10:     slice_param->slice_data_size   = size;
yading@10:     slice_param->slice_data_offset = vactx->slice_data_size;
yading@10:     slice_param->slice_data_flag   = VA_SLICE_DATA_FLAG_ALL;
yading@10: 
yading@10:     vactx->slice_count++;
yading@10:     vactx->slice_data_size += size;
yading@10:     return slice_param;
yading@10: }
yading@10: 
yading@10: void ff_vaapi_common_end_frame(AVCodecContext *avctx)
yading@10: {
yading@10:     struct vaapi_context * const vactx = avctx->hwaccel_context;
yading@10: 
yading@10:     av_dlog(avctx, "ff_vaapi_common_end_frame()\n");
yading@10: 
yading@10:     destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
yading@10:     destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
yading@10:     destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
yading@10:     destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
yading@10:     av_freep(&vactx->slice_buf_ids);
yading@10:     av_freep(&vactx->slice_params);
yading@10:     vactx->n_slice_buf_ids     = 0;
yading@10:     vactx->slice_buf_ids_alloc = 0;
yading@10:     vactx->slice_count         = 0;
yading@10:     vactx->slice_params_alloc  = 0;
yading@10: }
yading@10: 
yading@10: int ff_vaapi_mpeg_end_frame(AVCodecContext *avctx)
yading@10: {
yading@10:     struct vaapi_context * const vactx = avctx->hwaccel_context;
yading@10:     MpegEncContext *s = avctx->priv_data;
yading@10:     int ret;
yading@10: 
yading@10:     ret = ff_vaapi_commit_slices(vactx);
yading@10:     if (ret < 0)
yading@10:         goto finish;
yading@10: 
yading@10:     ret = ff_vaapi_render_picture(vactx,
yading@10:                                   ff_vaapi_get_surface_id(s->current_picture_ptr));
yading@10:     if (ret < 0)
yading@10:         goto finish;
yading@10: 
yading@10:     ff_mpeg_draw_horiz_band(s, 0, s->avctx->height);
yading@10: 
yading@10: finish:
yading@10:     ff_vaapi_common_end_frame(avctx);
yading@10:     return ret;
yading@10: }
yading@10: 
yading@10: /* @} */