From 8992cb1d0d07edc33d274f6d7924ecdf6f83d994 Mon Sep 17 00:00:00 2001 From: Tim Redfern Date: Thu, 5 Sep 2013 17:57:22 +0100 Subject: making act segmenter --- ffmpeg/libavcodec/vaapi_mpeg4.c | 169 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 169 insertions(+) create mode 100644 ffmpeg/libavcodec/vaapi_mpeg4.c (limited to 'ffmpeg/libavcodec/vaapi_mpeg4.c') diff --git a/ffmpeg/libavcodec/vaapi_mpeg4.c b/ffmpeg/libavcodec/vaapi_mpeg4.c new file mode 100644 index 0000000..bcc0eba --- /dev/null +++ b/ffmpeg/libavcodec/vaapi_mpeg4.c @@ -0,0 +1,169 @@ +/* + * 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" +#include "h263.h" + +/** Reconstruct bitstream intra_dc_vlc_thr */ +static int mpeg4_get_intra_dc_vlc_thr(MpegEncContext *s) +{ + 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) +{ + MpegEncContext * const s = avctx->priv_data; + struct vaapi_context * const vactx = avctx->hwaccel_context; + VAPictureParameterBufferMPEG4 *pic_param; + VAIQMatrixBufferMPEG4 *iq_matrix; + int i; + + av_dlog(avctx, "vaapi_mpeg4_start_frame()\n"); + + vactx->slice_param_size = sizeof(VASliceParameterBufferMPEG4); + + /* Fill in VAPictureParameterBufferMPEG4 */ + pic_param = ff_vaapi_alloc_pic_param(vactx, sizeof(VAPictureParameterBufferMPEG4)); + if (!pic_param) + return -1; + pic_param->vop_width = s->width; + pic_param->vop_height = s->height; + pic_param->forward_reference_picture = VA_INVALID_ID; + pic_param->backward_reference_picture = VA_INVALID_ID; + pic_param->vol_fields.value = 0; /* reset all bits */ + pic_param->vol_fields.bits.short_video_header = avctx->codec->id == AV_CODEC_ID_H263; + 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; + pic_param->vol_fields.bits.sprite_enable = s->vol_sprite_usage; + 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; + pic_param->vol_fields.bits.reversible_vlc = s->rvlc; + pic_param->vol_fields.bits.resync_marker_disable = !s->resync_marker; + pic_param->no_of_sprite_warping_points = s->num_sprite_warping_points; + for (i = 0; i < s->num_sprite_warping_points && i < 3; i++) { + pic_param->sprite_trajectory_du[i] = s->sprite_traj[i][0]; + pic_param->sprite_trajectory_dv[i] = s->sprite_traj[i][1]; + } + pic_param->quant_precision = s->quant_precision; + pic_param->vop_fields.value = 0; /* reset all bits */ + pic_param->vop_fields.bits.vop_coding_type = s->pict_type - AV_PICTURE_TYPE_I; + 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; + pic_param->vop_fields.bits.vop_rounding_type = s->no_rounding; + pic_param->vop_fields.bits.intra_dc_vlc_thr = mpeg4_get_intra_dc_vlc_thr(s); + 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; + pic_param->vop_time_increment_resolution = avctx->time_base.den; + pic_param->num_macroblocks_in_gob = s->mb_width * ff_h263_get_gob_height(s); + 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; + + if (s->pict_type == AV_PICTURE_TYPE_B) + pic_param->backward_reference_picture = ff_vaapi_get_surface_id(&s->next_picture); + if (s->pict_type != AV_PICTURE_TYPE_I) + pic_param->forward_reference_picture = ff_vaapi_get_surface_id(&s->last_picture); + + /* Fill in VAIQMatrixBufferMPEG4 */ + /* Only the first inverse quantisation method uses the weighting matrices */ + 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++) { + int n = s->dsp.idct_permutation[ff_zigzag_direct[i]]; + 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; + VASliceParameterBufferMPEG4 *slice_param; + + av_dlog(avctx, "vaapi_mpeg4_decode_slice(): buffer %p, size %d\n", buffer, size); + + /* video_plane_with_short_video_header() contains all GOBs + * in-order, and this is what VA API (Intel backend) expects: only + * a single slice param. So fake macroblock_number for FFmpeg so + * that we don't call vaapi_mpeg4_decode_slice() again + */ + if (avctx->codec->id == AV_CODEC_ID_H263) + size = s->gb.buffer_end - buffer; + + /* Fill in VASliceParameterBufferMPEG4 */ + slice_param = (VASliceParameterBufferMPEG4 *)ff_vaapi_alloc_slice(avctx->hwaccel_context, buffer, size); + if (!slice_param) + return -1; + slice_param->macroblock_offset = get_bits_count(&s->gb) % 8; + slice_param->macroblock_number = s->mb_y * s->mb_width + s->mb_x; + slice_param->quant_scale = s->qscale; + + if (avctx->codec->id == AV_CODEC_ID_H263) + s->mb_y = s->mb_height; + + return 0; +} + +#if CONFIG_MPEG4_VAAPI_HWACCEL +AVHWAccel ff_mpeg4_vaapi_hwaccel = { + .name = "mpeg4_vaapi", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_MPEG4, + .pix_fmt = AV_PIX_FMT_VAAPI_VLD, + .start_frame = vaapi_mpeg4_start_frame, + .end_frame = ff_vaapi_mpeg_end_frame, + .decode_slice = vaapi_mpeg4_decode_slice, +}; +#endif + +#if CONFIG_H263_VAAPI_HWACCEL +AVHWAccel ff_h263_vaapi_hwaccel = { + .name = "h263_vaapi", + .type = AVMEDIA_TYPE_VIDEO, + .id = AV_CODEC_ID_H263, + .pix_fmt = AV_PIX_FMT_VAAPI_VLD, + .start_frame = vaapi_mpeg4_start_frame, + .end_frame = ff_vaapi_mpeg_end_frame, + .decode_slice = vaapi_mpeg4_decode_slice, +}; +#endif -- cgit v1.2.3