| 1 | /* |
| 2 | * DXVA2 HW acceleration. |
| 3 | * |
| 4 | * copyright (c) 2010 Laurent Aimar |
| 5 | * |
| 6 | * This file is part of FFmpeg. |
| 7 | * |
| 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. |
| 12 | * |
| 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. |
| 17 | * |
| 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 |
| 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 | } |