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![Anton Khirnov](/assets/img/avatar_default.png)
Most of the changes are just trivial are just trivial replacements of fields from MpegEncContext with equivalent fields in H264Context. Everything in h264* other than h264.c are those trivial changes. The nontrivial parts are: 1) extracting a simplified version of the frame management code from mpegvideo.c. We don't need last/next_picture anymore, since h264 uses its own more complex system already and those were set only to appease the mpegvideo parts. 2) some tables that need to be allocated/freed in appropriate places. 3) hwaccels -- mostly trivial replacements. for dxva, the draw_horiz_band() call is moved from ff_dxva2_common_end_frame() to per-codec end_frame() callbacks, because it's now different for h264 and MpegEncContext-based decoders. 4) svq3 -- it does not use h264 complex reference system, so I just added some very simplistic frame management instead and dropped the use of ff_h264_frame_start(). Because of this I also had to move some initialization code to svq3. Additional fixes for chroma format and bit depth changes by Janne Grunau <janne-libav@jannau.net> Signed-off-by: Anton Khirnov <anton@khirnov.net>
151 lines
4.9 KiB
C
151 lines
4.9 KiB
C
/*
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* DXVA2 HW acceleration.
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*
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* copyright (c) 2010 Laurent Aimar
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*
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* This file is part of Libav.
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*
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* Libav is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* Libav is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with Libav; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "dxva2_internal.h"
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void *ff_dxva2_get_surface(const Picture *picture)
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{
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return picture->f.data[3];
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}
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unsigned ff_dxva2_get_surface_index(const struct dxva_context *ctx,
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const Picture *picture)
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{
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void *surface = ff_dxva2_get_surface(picture);
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unsigned i;
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for (i = 0; i < ctx->surface_count; i++)
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if (ctx->surface[i] == surface)
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return i;
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assert(0);
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return 0;
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}
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int ff_dxva2_commit_buffer(AVCodecContext *avctx,
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struct dxva_context *ctx,
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DXVA2_DecodeBufferDesc *dsc,
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unsigned type, const void *data, unsigned size,
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unsigned mb_count)
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{
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void *dxva_data;
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unsigned dxva_size;
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int result;
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if (FAILED(IDirectXVideoDecoder_GetBuffer(ctx->decoder, type,
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&dxva_data, &dxva_size))) {
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av_log(avctx, AV_LOG_ERROR, "Failed to get a buffer for %d\n", type);
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return -1;
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}
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if (size <= dxva_size) {
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memcpy(dxva_data, data, size);
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memset(dsc, 0, sizeof(*dsc));
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dsc->CompressedBufferType = type;
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dsc->DataSize = size;
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dsc->NumMBsInBuffer = mb_count;
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result = 0;
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} else {
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av_log(avctx, AV_LOG_ERROR, "Buffer for type %d was too small\n", type);
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result = -1;
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}
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if (FAILED(IDirectXVideoDecoder_ReleaseBuffer(ctx->decoder, type))) {
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av_log(avctx, AV_LOG_ERROR, "Failed to release buffer type %d\n", type);
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result = -1;
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}
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return result;
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}
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int ff_dxva2_common_end_frame(AVCodecContext *avctx, Picture *pic,
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const void *pp, unsigned pp_size,
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const void *qm, unsigned qm_size,
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int (*commit_bs_si)(AVCodecContext *,
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DXVA2_DecodeBufferDesc *bs,
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DXVA2_DecodeBufferDesc *slice))
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{
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struct dxva_context *ctx = avctx->hwaccel_context;
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unsigned buffer_count = 0;
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DXVA2_DecodeBufferDesc buffer[4];
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DXVA2_DecodeExecuteParams exec = { 0 };
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int result;
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if (FAILED(IDirectXVideoDecoder_BeginFrame(ctx->decoder,
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ff_dxva2_get_surface(pic),
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NULL))) {
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av_log(avctx, AV_LOG_ERROR, "Failed to begin frame\n");
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return -1;
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}
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result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
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DXVA2_PictureParametersBufferType,
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pp, pp_size, 0);
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if (result) {
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av_log(avctx, AV_LOG_ERROR,
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"Failed to add picture parameter buffer\n");
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goto end;
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}
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buffer_count++;
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if (qm_size > 0) {
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result = ff_dxva2_commit_buffer(avctx, ctx, &buffer[buffer_count],
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DXVA2_InverseQuantizationMatrixBufferType,
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qm, qm_size, 0);
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if (result) {
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av_log(avctx, AV_LOG_ERROR,
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"Failed to add inverse quantization matrix buffer\n");
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goto end;
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}
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buffer_count++;
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}
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result = commit_bs_si(avctx,
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&buffer[buffer_count + 0],
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&buffer[buffer_count + 1]);
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if (result) {
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av_log(avctx, AV_LOG_ERROR,
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"Failed to add bitstream or slice control buffer\n");
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goto end;
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}
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buffer_count += 2;
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/* TODO Film Grain when possible */
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assert(buffer_count == 1 + (qm_size > 0) + 2);
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exec.NumCompBuffers = buffer_count;
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exec.pCompressedBuffers = buffer;
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exec.pExtensionData = NULL;
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if (FAILED(IDirectXVideoDecoder_Execute(ctx->decoder, &exec))) {
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av_log(avctx, AV_LOG_ERROR, "Failed to execute\n");
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result = -1;
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}
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end:
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if (FAILED(IDirectXVideoDecoder_EndFrame(ctx->decoder, NULL))) {
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av_log(avctx, AV_LOG_ERROR, "Failed to end frame\n");
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result = -1;
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}
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return result;
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}
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