1/*
2 * Video Acceleration API (video decoding)
3 * HW decode acceleration for MPEG-2, MPEG-4, H.264 and VC-1
4 *
5 * Copyright (C) 2008-2009 Splitted-Desktop Systems
6 *
7 * This file is part of FFmpeg.
8 *
9 * FFmpeg is free software; you can redistribute it and/or
10 * modify it under the terms of the GNU Lesser General Public
11 * License as published by the Free Software Foundation; either
12 * version 2.1 of the License, or (at your option) any later version.
13 *
14 * FFmpeg is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with FFmpeg; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include "vaapi_internal.h"
25
26/**
27 * \addtogroup VAAPI_Decoding
28 *
29 * @{
30 */
31
32static void destroy_buffers(VADisplay display, VABufferID *buffers, unsigned int n_buffers)
33{
34    unsigned int i;
35    for (i = 0; i < n_buffers; i++) {
36        if (buffers[i]) {
37            vaDestroyBuffer(display, buffers[i]);
38            buffers[i] = 0;
39        }
40    }
41}
42
43static int render_picture(struct vaapi_context *vactx, VASurfaceID surface)
44{
45    VABufferID va_buffers[3];
46    unsigned int n_va_buffers = 0;
47
48    vaUnmapBuffer(vactx->display, vactx->pic_param_buf_id);
49    va_buffers[n_va_buffers++] = vactx->pic_param_buf_id;
50
51    if (vactx->iq_matrix_buf_id) {
52        vaUnmapBuffer(vactx->display, vactx->iq_matrix_buf_id);
53        va_buffers[n_va_buffers++] = vactx->iq_matrix_buf_id;
54    }
55
56    if (vactx->bitplane_buf_id) {
57        vaUnmapBuffer(vactx->display, vactx->bitplane_buf_id);
58        va_buffers[n_va_buffers++] = vactx->bitplane_buf_id;
59    }
60
61    if (vaBeginPicture(vactx->display, vactx->context_id,
62                       surface) != VA_STATUS_SUCCESS)
63        return -1;
64
65    if (vaRenderPicture(vactx->display, vactx->context_id,
66                        va_buffers, n_va_buffers) != VA_STATUS_SUCCESS)
67        return -1;
68
69    if (vaRenderPicture(vactx->display, vactx->context_id,
70                        vactx->slice_buf_ids,
71                        vactx->n_slice_buf_ids) != VA_STATUS_SUCCESS)
72        return -1;
73
74    if (vaEndPicture(vactx->display, vactx->context_id) != VA_STATUS_SUCCESS)
75        return -1;
76
77    return 0;
78}
79
80static int commit_slices(struct vaapi_context *vactx)
81{
82    VABufferID *slice_buf_ids;
83    VABufferID slice_param_buf_id, slice_data_buf_id;
84
85    if (vactx->slice_count == 0)
86        return 0;
87
88    slice_buf_ids =
89        av_fast_realloc(vactx->slice_buf_ids,
90                        &vactx->slice_buf_ids_alloc,
91                        (vactx->n_slice_buf_ids + 2) * sizeof(slice_buf_ids[0]));
92    if (!slice_buf_ids)
93        return -1;
94    vactx->slice_buf_ids = slice_buf_ids;
95
96    slice_param_buf_id = 0;
97    if (vaCreateBuffer(vactx->display, vactx->context_id,
98                       VASliceParameterBufferType,
99                       vactx->slice_param_size,
100                       vactx->slice_count, vactx->slice_params,
101                       &slice_param_buf_id) != VA_STATUS_SUCCESS)
102        return -1;
103    vactx->slice_count = 0;
104
105    slice_data_buf_id = 0;
106    if (vaCreateBuffer(vactx->display, vactx->context_id,
107                       VASliceDataBufferType,
108                       vactx->slice_data_size,
109                       1, (void *)vactx->slice_data,
110                       &slice_data_buf_id) != VA_STATUS_SUCCESS)
111        return -1;
112    vactx->slice_data = NULL;
113    vactx->slice_data_size = 0;
114
115    slice_buf_ids[vactx->n_slice_buf_ids++] = slice_param_buf_id;
116    slice_buf_ids[vactx->n_slice_buf_ids++] = slice_data_buf_id;
117    return 0;
118}
119
120static void *alloc_buffer(struct vaapi_context *vactx, int type, unsigned int size, uint32_t *buf_id)
121{
122    void *data = NULL;
123
124    *buf_id = 0;
125    if (vaCreateBuffer(vactx->display, vactx->context_id,
126                       type, size, 1, NULL, buf_id) == VA_STATUS_SUCCESS)
127        vaMapBuffer(vactx->display, *buf_id, &data);
128
129    return data;
130}
131
132void *ff_vaapi_alloc_pic_param(struct vaapi_context *vactx, unsigned int size)
133{
134    return alloc_buffer(vactx, VAPictureParameterBufferType, size, &vactx->pic_param_buf_id);
135}
136
137void *ff_vaapi_alloc_iq_matrix(struct vaapi_context *vactx, unsigned int size)
138{
139    return alloc_buffer(vactx, VAIQMatrixBufferType, size, &vactx->iq_matrix_buf_id);
140}
141
142uint8_t *ff_vaapi_alloc_bitplane(struct vaapi_context *vactx, uint32_t size)
143{
144    return alloc_buffer(vactx, VABitPlaneBufferType, size, &vactx->bitplane_buf_id);
145}
146
147VASliceParameterBufferBase *ff_vaapi_alloc_slice(struct vaapi_context *vactx, const uint8_t *buffer, uint32_t size)
148{
149    uint8_t *slice_params;
150    VASliceParameterBufferBase *slice_param;
151
152    if (!vactx->slice_data)
153        vactx->slice_data = buffer;
154    if (vactx->slice_data + vactx->slice_data_size != buffer) {
155        if (commit_slices(vactx) < 0)
156            return NULL;
157        vactx->slice_data = buffer;
158    }
159
160    slice_params =
161        av_fast_realloc(vactx->slice_params,
162                        &vactx->slice_params_alloc,
163                        (vactx->slice_count + 1) * vactx->slice_param_size);
164    if (!slice_params)
165        return NULL;
166    vactx->slice_params = slice_params;
167
168    slice_param = (VASliceParameterBufferBase *)(slice_params + vactx->slice_count * vactx->slice_param_size);
169    slice_param->slice_data_size   = size;
170    slice_param->slice_data_offset = vactx->slice_data_size;
171    slice_param->slice_data_flag   = VA_SLICE_DATA_FLAG_ALL;
172
173    vactx->slice_count++;
174    vactx->slice_data_size += size;
175    return slice_param;
176}
177
178int ff_vaapi_common_end_frame(MpegEncContext *s)
179{
180    struct vaapi_context * const vactx = s->avctx->hwaccel_context;
181    int ret = -1;
182
183    dprintf(s->avctx, "ff_vaapi_common_end_frame()\n");
184
185    if (commit_slices(vactx) < 0)
186        goto done;
187    if (vactx->n_slice_buf_ids > 0) {
188        if (render_picture(vactx, ff_vaapi_get_surface_id(s->current_picture_ptr)) < 0)
189            goto done;
190        ff_draw_horiz_band(s, 0, s->avctx->height);
191    }
192    ret = 0;
193
194done:
195    destroy_buffers(vactx->display, &vactx->pic_param_buf_id, 1);
196    destroy_buffers(vactx->display, &vactx->iq_matrix_buf_id, 1);
197    destroy_buffers(vactx->display, &vactx->bitplane_buf_id, 1);
198    destroy_buffers(vactx->display, vactx->slice_buf_ids, vactx->n_slice_buf_ids);
199    av_freep(&vactx->slice_buf_ids);
200    av_freep(&vactx->slice_params);
201    vactx->n_slice_buf_ids     = 0;
202    vactx->slice_buf_ids_alloc = 0;
203    vactx->slice_count         = 0;
204    vactx->slice_params_alloc  = 0;
205    return ret;
206}
207
208/* @} */
209