2 * DXVA2 HW acceleration.
4 * copyright (c) 2010 Laurent Aimar
6 * This file is part of FFmpeg.
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
26 #include "libavutil/log.h"
27 #include "libavutil/time.h"
30 #include "mpegvideo.h"
31 #include "dxva2_internal.h"
33 void *ff_dxva2_get_surface(const AVFrame
*frame
)
35 return frame
->data
[3];
38 unsigned ff_dxva2_get_surface_index(const struct dxva_context
*ctx
,
41 void *surface
= ff_dxva2_get_surface(frame
);
44 for (i
= 0; i
< ctx
->surface_count
; i
++)
45 if (ctx
->surface
[i
] == surface
)
52 int ff_dxva2_commit_buffer(AVCodecContext
*avctx
,
53 struct dxva_context
*ctx
,
54 DXVA2_DecodeBufferDesc
*dsc
,
55 unsigned type
, const void *data
, unsigned size
,
63 hr
= IDirectXVideoDecoder_GetBuffer(ctx
->decoder
, type
,
64 &dxva_data
, &dxva_size
);
66 av_log(avctx
, AV_LOG_ERROR
, "Failed to get a buffer for %u: 0x%lx\n",
70 if (size
<= dxva_size
) {
71 memcpy(dxva_data
, data
, size
);
73 memset(dsc
, 0, sizeof(*dsc
));
74 dsc
->CompressedBufferType
= type
;
76 dsc
->NumMBsInBuffer
= mb_count
;
80 av_log(avctx
, AV_LOG_ERROR
, "Buffer for type %u was too small\n", type
);
84 hr
= IDirectXVideoDecoder_ReleaseBuffer(ctx
->decoder
, type
);
86 av_log(avctx
, AV_LOG_ERROR
,
87 "Failed to release buffer type %u: 0x%lx\n",
94 int ff_dxva2_common_end_frame(AVCodecContext
*avctx
, AVFrame
*frame
,
95 const void *pp
, unsigned pp_size
,
96 const void *qm
, unsigned qm_size
,
97 int (*commit_bs_si
)(AVCodecContext
*,
98 DXVA2_DecodeBufferDesc
*bs
,
99 DXVA2_DecodeBufferDesc
*slice
))
101 struct dxva_context
*ctx
= avctx
->hwaccel_context
;
102 unsigned buffer_count
= 0;
103 DXVA2_DecodeBufferDesc buffer
[4];
104 DXVA2_DecodeExecuteParams exec
= { 0 };
105 int result
, runs
= 0;
109 hr
= IDirectXVideoDecoder_BeginFrame(ctx
->decoder
,
110 ff_dxva2_get_surface(frame
),
114 } while (hr
== E_PENDING
&& ++runs
< 50);
117 av_log(avctx
, AV_LOG_ERROR
, "Failed to begin frame: 0x%lx\n", hr
);
121 result
= ff_dxva2_commit_buffer(avctx
, ctx
, &buffer
[buffer_count
],
122 DXVA2_PictureParametersBufferType
,
125 av_log(avctx
, AV_LOG_ERROR
,
126 "Failed to add picture parameter buffer\n");
132 result
= ff_dxva2_commit_buffer(avctx
, ctx
, &buffer
[buffer_count
],
133 DXVA2_InverseQuantizationMatrixBufferType
,
136 av_log(avctx
, AV_LOG_ERROR
,
137 "Failed to add inverse quantization matrix buffer\n");
143 result
= commit_bs_si(avctx
,
144 &buffer
[buffer_count
+ 0],
145 &buffer
[buffer_count
+ 1]);
147 av_log(avctx
, AV_LOG_ERROR
,
148 "Failed to add bitstream or slice control buffer\n");
153 /* TODO Film Grain when possible */
155 assert(buffer_count
== 1 + (qm_size
> 0) + 2);
157 exec
.NumCompBuffers
= buffer_count
;
158 exec
.pCompressedBuffers
= buffer
;
159 exec
.pExtensionData
= NULL
;
160 hr
= IDirectXVideoDecoder_Execute(ctx
->decoder
, &exec
);
162 av_log(avctx
, AV_LOG_ERROR
, "Failed to execute: 0x%lx\n", hr
);
167 hr
= IDirectXVideoDecoder_EndFrame(ctx
->decoder
, NULL
);
169 av_log(avctx
, AV_LOG_ERROR
, "Failed to end frame: 0x%lx\n", hr
);