yading@10: /*
yading@10:  * DXVA2 HW acceleration.
yading@10:  *
yading@10:  * copyright (c) 2010 Laurent Aimar
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 "dxva2_internal.h"
yading@10: 
yading@10: void *ff_dxva2_get_surface(const Picture *picture)
yading@10: {
yading@10:     return picture->f.data[3];
yading@10: }
yading@10: 
yading@10: unsigned ff_dxva2_get_surface_index(const struct dxva_context *ctx,
yading@10:                                     const Picture *picture)
yading@10: {
yading@10:     void *surface = ff_dxva2_get_surface(picture);
yading@10:     unsigned i;
yading@10: 
yading@10:     for (i = 0; i < ctx->surface_count; i++)
yading@10:         if (ctx->surface[i] == surface)
yading@10:             return i;
yading@10: 
yading@10:     assert(0);
yading@10:     return 0;
yading@10: }
yading@10: 
yading@10: int ff_dxva2_commit_buffer(AVCodecContext *avctx,
yading@10:                            struct dxva_context *ctx,
yading@10:                            DXVA2_DecodeBufferDesc *dsc,
yading@10:                            unsigned type, const void *data, unsigned size,
yading@10:                            unsigned mb_count)
yading@10: {
yading@10:     void     *dxva_data;
yading@10:     unsigned dxva_size;
yading@10:     int      result;
yading@10: 
yading@10:     if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, type,
yading@10:                                               &dxva_data, &dxva_size))) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Failed to get a buffer for %d\n", type);
yading@10:         return -1;
yading@10:     }
yading@10:     if (size <= dxva_size) {
yading@10:         memcpy(dxva_data, data, size);
yading@10: 
yading@10:         memset(dsc, 0, sizeof(*dsc));
yading@10:         dsc->CompressedBufferType = type;
yading@10:         dsc->DataSize             = size;
yading@10:         dsc->NumMBsInBuffer       = mb_count;
yading@10: 
yading@10:         result = 0;
yading@10:     } else {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Buffer for type %d was too small\n", type);
yading@10:         result = -1;
yading@10:     }
yading@10:     if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, type))) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Failed to release buffer type %d\n", type);
yading@10:         result = -1;
yading@10:     }
yading@10:     return result;
yading@10: }
yading@10: 
yading@10: int ff_dxva2_common_end_frame(AVCodecContext *avctx, Picture *pic,
yading@10:                               const void *pp, unsigned pp_size,
yading@10:                               const void *qm, unsigned qm_size,
yading@10:                               int (*commit_bs_si)(AVCodecContext *,
yading@10:                                                   DXVA2_DecodeBufferDesc *bs,
yading@10:                                                   DXVA2_DecodeBufferDesc *slice))
yading@10: {
yading@10:     struct dxva_context *ctx = avctx->hwaccel_context;
yading@10:     unsigned               buffer_count = 0;
yading@10:     DXVA2_DecodeBufferDesc buffer[4];
yading@10:     DXVA2_DecodeExecuteParams exec = { 0 };
yading@10:     int      result;
yading@10: 
yading@10:     if (FAILED(IDirectXVideoDecoder_BeginFrame(ctx->decoder,
yading@10:                                                ff_dxva2_get_surface(pic),
yading@10:                                                NULL))) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Failed to begin frame\n");
yading@10:         return -1;
yading@10:     }
yading@10: 
yading@10:     result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
yading@10:                                     DXVA2_PictureParametersBufferType,
yading@10:                                     pp, pp_size, 0);
yading@10:     if (result) {
yading@10:         av_log(avctx, AV_LOG_ERROR,
yading@10:                "Failed to add picture parameter buffer\n");
yading@10:         goto end;
yading@10:     }
yading@10:     buffer_count++;
yading@10: 
yading@10:     if (qm_size > 0) {
yading@10:         result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
yading@10:                                         DXVA2_InverseQuantizationMatrixBufferType,
yading@10:                                         qm, qm_size, 0);
yading@10:         if (result) {
yading@10:             av_log(avctx, AV_LOG_ERROR,
yading@10:                    "Failed to add inverse quantization matrix buffer\n");
yading@10:             goto end;
yading@10:         }
yading@10:         buffer_count++;
yading@10:     }
yading@10: 
yading@10:     result = commit_bs_si(avctx,
yading@10:                           &buffer[buffer_count + 0],
yading@10:                           &buffer[buffer_count + 1]);
yading@10:     if (result) {
yading@10:         av_log(avctx, AV_LOG_ERROR,
yading@10:                "Failed to add bitstream or slice control buffer\n");
yading@10:         goto end;
yading@10:     }
yading@10:     buffer_count += 2;
yading@10: 
yading@10:     /* TODO Film Grain when possible */
yading@10: 
yading@10:     assert(buffer_count == 1 + (qm_size > 0) + 2);
yading@10: 
yading@10:     exec.NumCompBuffers      = buffer_count;
yading@10:     exec.pCompressedBuffers  = buffer;
yading@10:     exec.pExtensionData      = NULL;
yading@10:     if (FAILED(IDirectXVideoDecoder_Execute(ctx->decoder, &exec))) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Failed to execute\n");
yading@10:         result = -1;
yading@10:     }
yading@10: 
yading@10: end:
yading@10:     if (FAILED(IDirectXVideoDecoder_EndFrame(ctx->decoder, NULL))) {
yading@10:         av_log(avctx, AV_LOG_ERROR, "Failed to end frame\n");
yading@10:         result = -1;
yading@10:     }
yading@10: 
yading@10:     return result;
yading@10: }