dxva2: Directly use AVFrames
[libav.git] / libavcodec / dxva2.c
1 /*
2 * DXVA2 HW acceleration.
3 *
4 * copyright (c) 2010 Laurent Aimar
5 *
6 * This file is part of Libav.
7 *
8 * Libav 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.
12 *
13 * Libav 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.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with Libav; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 #include <assert.h>
24 #include <string.h>
25
26 #include "libavutil/log.h"
27 #include "libavutil/time.h"
28
29 #include "avcodec.h"
30 #include "mpegvideo.h"
31 #include "dxva2_internal.h"
32
33 void *ff_dxva2_get_surface(const AVFrame *frame)
34 {
35 return frame->data[3];
36 }
37
38 unsigned ff_dxva2_get_surface_index(const struct dxva_context *ctx,
39 const AVFrame *frame)
40 {
41 void *surface = ff_dxva2_get_surface(frame);
42 unsigned i;
43
44 for (i = 0; i < ctx->surface_count; i++)
45 if (ctx->surface[i] == surface)
46 return i;
47
48 assert(0);
49 return 0;
50 }
51
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,
56 unsigned mb_count)
57 {
58 void *dxva_data;
59 unsigned dxva_size;
60 int result;
61 HRESULT hr;
62
63 hr = IDirectXVideoDecoder_GetBuffer(ctx->decoder, type,
64 &dxva_data, &dxva_size);
65 if (FAILED(hr)) {
66 av_log(avctx, AV_LOG_ERROR, "Failed to get a buffer for %u: 0x%lx\n",
67 type, hr);
68 return -1;
69 }
70 if (size <= dxva_size) {
71 memcpy(dxva_data, data, size);
72
73 memset(dsc, 0, sizeof(*dsc));
74 dsc->CompressedBufferType = type;
75 dsc->DataSize = size;
76 dsc->NumMBsInBuffer = mb_count;
77
78 result = 0;
79 } else {
80 av_log(avctx, AV_LOG_ERROR, "Buffer for type %u was too small\n", type);
81 result = -1;
82 }
83
84 hr = IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, type);
85 if (FAILED(hr)) {
86 av_log(avctx, AV_LOG_ERROR,
87 "Failed to release buffer type %u: 0x%lx\n",
88 type, hr);
89 result = -1;
90 }
91 return result;
92 }
93
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))
100 {
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;
106 HRESULT hr;
107
108 do {
109 hr = IDirectXVideoDecoder_BeginFrame(ctx->decoder,
110 ff_dxva2_get_surface(frame),
111 NULL);
112 if (hr == E_PENDING)
113 av_usleep(2000);
114 } while (hr == E_PENDING && ++runs < 50);
115
116 if (FAILED(hr)) {
117 av_log(avctx, AV_LOG_ERROR, "Failed to begin frame: 0x%lx\n", hr);
118 return -1;
119 }
120
121 result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
122 DXVA2_PictureParametersBufferType,
123 pp, pp_size, 0);
124 if (result) {
125 av_log(avctx, AV_LOG_ERROR,
126 "Failed to add picture parameter buffer\n");
127 goto end;
128 }
129 buffer_count++;
130
131 if (qm_size > 0) {
132 result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
133 DXVA2_InverseQuantizationMatrixBufferType,
134 qm, qm_size, 0);
135 if (result) {
136 av_log(avctx, AV_LOG_ERROR,
137 "Failed to add inverse quantization matrix buffer\n");
138 goto end;
139 }
140 buffer_count++;
141 }
142
143 result = commit_bs_si(avctx,
144 &buffer[buffer_count + 0],
145 &buffer[buffer_count + 1]);
146 if (result) {
147 av_log(avctx, AV_LOG_ERROR,
148 "Failed to add bitstream or slice control buffer\n");
149 goto end;
150 }
151 buffer_count += 2;
152
153 /* TODO Film Grain when possible */
154
155 assert(buffer_count == 1 + (qm_size > 0) + 2);
156
157 exec.NumCompBuffers = buffer_count;
158 exec.pCompressedBuffers = buffer;
159 exec.pExtensionData = NULL;
160 hr = IDirectXVideoDecoder_Execute(ctx->decoder, &exec);
161 if (FAILED(hr)) {
162 av_log(avctx, AV_LOG_ERROR, "Failed to execute: 0x%lx\n", hr);
163 result = -1;
164 }
165
166 end:
167 hr = IDirectXVideoDecoder_EndFrame(ctx->decoder, NULL);
168 if (FAILED(hr)) {
169 av_log(avctx, AV_LOG_ERROR, "Failed to end frame: 0x%lx\n", hr);
170 result = -1;
171 }
172
173 return result;
174 }