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/*
* MPEG-4 / H.263 HW decode acceleration through VA API
*
* Copyright (C) 2008-2009 Splitted-Desktop Systems
*
* This file is part of FFmpeg.
*
* FFmpeg is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "vaapi_internal.h" |
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#include "internal.h" |
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#include "h263.h" |
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#include "mpeg4video.h" |
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/** Reconstruct bitstream intra_dc_vlc_thr */ |
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static int mpeg4_get_intra_dc_vlc_thr(Mpeg4DecContext *s) |
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{
switch (s->intra_dc_threshold) {
case 99: return 0;
case 13: return 1;
case 15: return 2;
case 17: return 3;
case 19: return 4;
case 21: return 5;
case 23: return 6;
case 0: return 7;
}
return 0;
}
static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_t *buffer, av_unused uint32_t size)
{ |
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Mpeg4DecContext *ctx = avctx->priv_data;
MpegEncContext * const s = &ctx->m; |
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FFVAContext * const vactx = ff_vaapi_get_context(avctx); |
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VAPictureParameterBufferMPEG4 *pic_param;
VAIQMatrixBufferMPEG4 *iq_matrix;
int i;
|
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ff_dlog(avctx, "vaapi_mpeg4_start_frame()\n"); |
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vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4);
/* Fill in VAPictureParameterBufferMPEG4 */ |
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pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4)); |
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if (!pic_param)
return -1;
pic_param->vop_width = s->width;
pic_param->vop_height = s->height; |
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pic_param->forward_reference_picture = VA_INVALID_ID;
pic_param->backward_reference_picture = VA_INVALID_ID; |
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pic_param->vol_fields.value = 0; /* reset all bits */ |
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pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263; |
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pic_param->vol_fields.bits.chroma_format = CHROMA_420;
pic_param->vol_fields.bits.interlaced = !s->progressive_sequence;
pic_param->vol_fields.bits.obmc_disable = 1; |
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pic_param->vol_fields.bits.sprite_enable = ctx->vol_sprite_usage; |
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pic_param->vol_fields.bits.sprite_warping_accuracy = s->sprite_warping_accuracy;
pic_param->vol_fields.bits.quant_type = s->mpeg_quant;
pic_param->vol_fields.bits.quarter_sample = s->quarter_sample;
pic_param->vol_fields.bits.data_partitioned = s->data_partitioning; |
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pic_param->vol_fields.bits.reversible_vlc = ctx->rvlc; |
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pic_param->vol_fields.bits.resync_marker_disable = !ctx->resync_marker; |
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pic_param->no_of_sprite_warping_points = ctx->num_sprite_warping_points;
for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) { |
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pic_param->sprite_trajectory_du[i] = ctx->sprite_traj[i][0];
pic_param->sprite_trajectory_dv[i] = ctx->sprite_traj[i][1]; |
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}
pic_param->quant_precision = s->quant_precision;
pic_param->vop_fields.value = 0; /* reset all bits */ |
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pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I; |
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pic_param->vop_fields.bits.backward_reference_vop_coding_type = s->pict_type == AV_PICTURE_TYPE_B ? s->next_picture.f->pict_type - AV_PICTURE_TYPE_I : 0; |
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pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding; |
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pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(ctx); |
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pic_param->vop_fields.bits.top_field_first = s->top_field_first;
pic_param->vop_fields.bits.alternate_vertical_scan_flag = s->alternate_scan;
pic_param->vop_fcode_forward = s->f_code;
pic_param->vop_fcode_backward = s->b_code; |
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pic_param->vop_time_increment_resolution = avctx->framerate.num; |
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pic_param->num_macroblocks_in_gob = s->mb_width * H263_GOB_HEIGHT(s->height); |
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pic_param->num_gobs_in_vop = (s->mb_width * s->mb_height) / pic_param->num_macroblocks_in_gob;
pic_param->TRB = s->pb_time;
pic_param->TRD = s->pp_time;
|
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if (s->pict_type == AV_PICTURE_TYPE_B) |
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pic_param->backward_reference_picture = ff_vaapi_get_surface_id(s->next_picture.f); |
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if (s->pict_type != AV_PICTURE_TYPE_I) |
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pic_param->forward_reference_picture = ff_vaapi_get_surface_id(s->last_picture.f); |
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/* Fill in VAIQMatrixBufferMPEG4 */ |
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/* Only the first inverse quantisation method uses the weighting matrices */ |
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if (pic_param->vol_fields.bits.quant_type) {
iq_matrix = ff_vaapi_alloc_iq_matrix(vactx, sizeof(VAIQMatrixBufferMPEG4));
if (!iq_matrix)
return -1;
iq_matrix->load_intra_quant_mat = 1;
iq_matrix->load_non_intra_quant_mat = 1;
for (i = 0; i < 64; i++) { |
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int n = s->idsp.idct_permutation[ff_zigzag_direct[i]]; |
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iq_matrix->intra_quant_mat[i] = s->intra_matrix[n];
iq_matrix->non_intra_quant_mat[i] = s->inter_matrix[n];
}
}
return 0;
}
static int vaapi_mpeg4_decode_slice(AVCodecContext *avctx, const uint8_t *buffer, uint32_t size)
{
MpegEncContext * const s = avctx->priv_data; |
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FFVAContext * const vactx = ff_vaapi_get_context(avctx); |
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VASliceParameterBufferMPEG4 *slice_param;
|
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ff_dlog(avctx, "vaapi_mpeg4_decode_slice(): buffer %p, size %d\n", buffer, size); |
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/* Fill in VASliceParameterBufferMPEG4 */ |
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slice_param = (VASliceParameterBufferMPEG4 *)ff_vaapi_alloc_slice(vactx, buffer, size); |
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if (!slice_param)
return -1;
slice_param->macroblock_offset = get_bits_count(&s->gb) % 8; |
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slice_param->macroblock_number = 0; |
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slice_param->quant_scale = s->qscale;
return 0;
}
#if CONFIG_MPEG4_VAAPI_HWACCEL |
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AVHWAccel ff_mpeg4_vaapi_hwaccel = { |
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.name = "mpeg4_vaapi", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_MPEG4, |
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.pix_fmt = AV_PIX_FMT_VAAPI, |
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.start_frame = vaapi_mpeg4_start_frame, |
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.end_frame = ff_vaapi_mpeg_end_frame, |
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.decode_slice = vaapi_mpeg4_decode_slice, |
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.init = ff_vaapi_context_init,
.uninit = ff_vaapi_context_fini,
.priv_data_size = sizeof(FFVAContext), |
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};
#endif
#if CONFIG_H263_VAAPI_HWACCEL |
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AVHWAccel ff_h263_vaapi_hwaccel = { |
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.name = "h263_vaapi", |
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.type = AVMEDIA_TYPE_VIDEO, |
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.id = AV_CODEC_ID_H263, |
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.pix_fmt = AV_PIX_FMT_VAAPI, |
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.start_frame = vaapi_mpeg4_start_frame, |
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.end_frame = ff_vaapi_mpeg_end_frame, |
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.decode_slice = vaapi_mpeg4_decode_slice, |
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.init = ff_vaapi_context_init,
.uninit = ff_vaapi_context_fini,
.priv_data_size = sizeof(FFVAContext), |
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};
#endif |