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![Michael Niedermayer](/assets/img/avatar_default.png)
* commit 'c242bbd8b6939507a1a6fb64101b0553d92d303f': Remove unnecessary dsputil.h #includes Conflicts: libavcodec/ffv1.c libavcodec/h261dec.c libavcodec/h261enc.c libavcodec/h264pred.c libavcodec/lpc.h libavcodec/mjpegdec.c libavcodec/rectangle.h libavcodec/x86/idct_sse2_xvid.c Merged-by: Michael Niedermayer <michaelni@gmx.at>
144 lines
6.3 KiB
C
144 lines
6.3 KiB
C
/*
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* MPEG-2 HW decode acceleration through VA API
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*
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* Copyright (C) 2008-2009 Splitted-Desktop Systems
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg 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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* FFmpeg 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 FFmpeg; 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 "vaapi_internal.h"
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/** Reconstruct bitstream f_code */
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static inline int mpeg2_get_f_code(MpegEncContext *s)
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{
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return (s->mpeg_f_code[0][0] << 12) | (s->mpeg_f_code[0][1] << 8) |
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(s->mpeg_f_code[1][0] << 4) | s->mpeg_f_code[1][1];
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}
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/** Determine frame start: first field for field picture or frame picture */
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static inline int mpeg2_get_is_frame_start(MpegEncContext *s)
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{
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return s->first_field || s->picture_structure == PICT_FRAME;
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}
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static int vaapi_mpeg2_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
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{
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struct MpegEncContext * const s = avctx->priv_data;
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struct vaapi_context * const vactx = avctx->hwaccel_context;
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VAPictureParameterBufferMPEG2 *pic_param;
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VAIQMatrixBufferMPEG2 *iq_matrix;
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int i;
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av_dlog(avctx, "vaapi_mpeg2_start_frame()\n");
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vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG2);
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/* Fill in VAPictureParameterBufferMPEG2 */
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pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG2));
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if (!pic_param)
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return -1;
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pic_param->horizontal_size = s->width;
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pic_param->vertical_size = s->height;
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pic_param->forward_reference_picture = VA_INVALID_ID;
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pic_param->backward_reference_picture = VA_INVALID_ID;
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pic_param->picture_coding_type = s->pict_type;
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pic_param->f_code = mpeg2_get_f_code(s);
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pic_param->picture_coding_extension.value = 0; /* reset all bits */
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pic_param->picture_coding_extension.bits.intra_dc_precision = s->intra_dc_precision;
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pic_param->picture_coding_extension.bits.picture_structure = s->picture_structure;
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pic_param->picture_coding_extension.bits.top_field_first = s->top_field_first;
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pic_param->picture_coding_extension.bits.frame_pred_frame_dct = s->frame_pred_frame_dct;
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pic_param->picture_coding_extension.bits.concealment_motion_vectors = s->concealment_motion_vectors;
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pic_param->picture_coding_extension.bits.q_scale_type = s->q_scale_type;
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pic_param->picture_coding_extension.bits.intra_vlc_format = s->intra_vlc_format;
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pic_param->picture_coding_extension.bits.alternate_scan = s->alternate_scan;
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pic_param->picture_coding_extension.bits.repeat_first_field = s->repeat_first_field;
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pic_param->picture_coding_extension.bits.progressive_frame = s->progressive_frame;
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pic_param->picture_coding_extension.bits.is_first_field = mpeg2_get_is_frame_start(s);
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switch (s->pict_type) {
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case AV_PICTURE_TYPE_B:
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pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture);
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// fall-through
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case AV_PICTURE_TYPE_P:
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pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture);
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break;
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}
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/* Fill in VAIQMatrixBufferMPEG2 */
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iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG2));
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if (!iq_matrix)
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return -1;
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iq_matrix->load_intra_quantiser_matrix = 1;
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iq_matrix->load_non_intra_quantiser_matrix = 1;
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iq_matrix->load_chroma_intra_quantiser_matrix = 1;
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iq_matrix->load_chroma_non_intra_quantiser_matrix = 1;
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for (i = 0; i < 64; i++) {
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int n = s->dsp.idct_permutation[ff_zigzag_direct[i]];
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iq_matrix->intra_quantiser_matrix[i] = s->intra_matrix[n];
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iq_matrix->non_intra_quantiser_matrix[i] = s->inter_matrix[n];
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iq_matrix->chroma_intra_quantiser_matrix[i] = s->chroma_intra_matrix[n];
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iq_matrix->chroma_non_intra_quantiser_matrix[i] = s->chroma_inter_matrix[n];
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}
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return 0;
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}
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static int vaapi_mpeg2_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
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{
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MpegEncContext * const s = avctx->priv_data;
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VASliceParameterBufferMPEG2 *slice_param;
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GetBitContext gb;
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uint32_t quantiser_scale_code, intra_slice_flag, macroblock_offset;
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av_dlog(avctx, "vaapi_mpeg2_decode_slice(): buffer %p, size %d\n", buffer, size);
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/* Determine macroblock_offset */
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init_get_bits(&gb, buffer, 8 * size);
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if (get_bits_long(&gb, 32) >> 8 != 1) /* start code */
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return AVERROR_INVALIDDATA;
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quantiser_scale_code = get_bits(&gb, 5);
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intra_slice_flag = get_bits1(&gb);
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if (intra_slice_flag) {
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skip_bits(&gb, 8);
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while (get_bits1(&gb) != 0)
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skip_bits(&gb, 8);
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}
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macroblock_offset = get_bits_count(&gb);
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/* Fill in VASliceParameterBufferMPEG2 */
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slice_param = (VASliceParameterBufferMPEG2 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size);
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if (!slice_param)
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return -1;
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slice_param->macroblock_offset = macroblock_offset;
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slice_param->slice_horizontal_position = s->mb_x;
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slice_param->slice_vertical_position = s->mb_y >> (s->picture_structure != PICT_FRAME);
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slice_param->quantiser_scale_code = quantiser_scale_code;
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slice_param->intra_slice_flag = intra_slice_flag;
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return 0;
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}
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AVHWAccel ff_mpeg2_vaapi_hwaccel = {
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.name = "mpeg2_vaapi",
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.type = AVMEDIA_TYPE_VIDEO,
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.id = AV_CODEC_ID_MPEG2VIDEO,
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.pix_fmt = AV_PIX_FMT_VAAPI_VLD,
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.start_frame = vaapi_mpeg2_start_frame,
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.end_frame = ff_vaapi_mpeg_end_frame,
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.decode_slice = vaapi_mpeg2_decode_slice,
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};
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