git.sesse.net Git - ffmpeg/blob - libavcodec/vdpauvideo.c

   1 /*
   2  * Video Decode and Presentation API for UNIX (VDPAU) is used for
   3  * HW decode acceleration for MPEG-1/2, H.264 and VC-1.
   4  *
   5  * Copyright (c) 2008 NVIDIA.
   6  *
   7  * This file is part of FFmpeg.
   8  *
   9  * FFmpeg is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * FFmpeg is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with FFmpeg; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  22  */
  23
  24 #include <limits.h>
  25 #include "avcodec.h"
  26 #include "h264.h"
  27
  28 #undef NDEBUG
  29 #include <assert.h>
  30
  31 #include "vdpau.h"
  32 #include "vdpau_internal.h"
  33
  34 /**
  35  * \addtogroup VDPAU_Decoding
  36  *
  37  * @{
  38  */
  39
  40 static void VDPAU_h264_set_reference_frames(H264Context *h)
  41 {
  42     MpegEncContext * s = &h->s;
  43     struct vdpau_render_state * render, * render_ref;
  44     VdpReferenceFrameH264 * rf, * rf2;
  45     Picture * pic;
  46     int i, list, pic_frame_idx;
  47
  48     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
  49     assert(render);
  50
  51     rf = &render->info.h264.referenceFrames[0];
  52 #define H264_RF_COUNT FF_ARRAY_ELEMS(render->info.h264.referenceFrames)
  53
  54     for (list = 0; list < 2; ++list) {
  55         Picture **lp = list ? h->long_ref : h->short_ref;
  56         int ls = list ? h->long_ref_count : h->short_ref_count;
  57
  58         for (i = 0; i < ls; ++i) {
  59             pic = lp[i];
  60             if (!pic || !pic->reference)
  61                 continue;
  62             pic_frame_idx = pic->long_ref ? pic->pic_id : pic->frame_num;
  63
  64             render_ref = (struct vdpau_render_state*)pic->data[0];
  65             assert(render_ref);
  66
  67             rf2 = &render->info.h264.referenceFrames[0];
  68             while (rf2 != rf) {
  69                 if (
  70                     (rf2->surface == render_ref->surface)
  71                     && (rf2->is_long_term == pic->long_ref)
  72                     && (rf2->frame_idx == pic_frame_idx)
  73                 )
  74                     break;
  75                 ++rf2;
  76             }
  77             if (rf2 != rf) {
  78                 rf2->top_is_reference    |= (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;
  79                 rf2->bottom_is_reference |= (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
  80                 continue;
  81             }
  82
  83             if (rf >= &render->info.h264.referenceFrames[H264_RF_COUNT])
  84                 continue;
  85
  86             rf->surface             = render_ref->surface;
  87             rf->is_long_term        = pic->long_ref;
  88             rf->top_is_reference    = (pic->reference & PICT_TOP_FIELD)    ? VDP_TRUE : VDP_FALSE;
  89             rf->bottom_is_reference = (pic->reference & PICT_BOTTOM_FIELD) ? VDP_TRUE : VDP_FALSE;
  90             rf->field_order_cnt[0]  = pic->field_poc[0];
  91             rf->field_order_cnt[1]  = pic->field_poc[1];
  92             rf->frame_idx           = pic_frame_idx;
  93
  94             ++rf;
  95         }
  96     }
  97
  98     for (; rf < &render->info.h264.referenceFrames[H264_RF_COUNT]; ++rf) {
  99         rf->surface             = VDP_INVALID_HANDLE;
 100         rf->is_long_term        = 0;
 101         rf->top_is_reference    = 0;
 102         rf->bottom_is_reference = 0;
 103         rf->field_order_cnt[0]  = 0;
 104         rf->field_order_cnt[1]  = 0;
 105         rf->frame_idx           = 0;
 106     }
 107 }
 108
 109 void ff_VDPAU_h264_add_data_chunk(H264Context *h, const uint8_t *buf, int buf_size)
 110 {
 111     MpegEncContext * s = &h->s;
 112     struct vdpau_render_state * render;
 113
 114     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
 115     assert(render);
 116
 117     if (!render->bitstream_buffers_used)
 118         VDPAU_h264_set_reference_frames(h);
 119
 120     render->bitstream_buffers= av_fast_realloc(
 121         render->bitstream_buffers,
 122         &render->bitstream_buffers_allocated,
 123         sizeof(*render->bitstream_buffers)*(render->bitstream_buffers_used + 1)
 124     );
 125
 126     render->bitstream_buffers[render->bitstream_buffers_used].struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
 127     render->bitstream_buffers[render->bitstream_buffers_used].bitstream       = buf;
 128     render->bitstream_buffers[render->bitstream_buffers_used].bitstream_bytes = buf_size;
 129     render->bitstream_buffers_used++;
 130 }
 131
 132 void ff_VDPAU_h264_picture_complete(H264Context *h)
 133 {
 134     MpegEncContext * s = &h->s;
 135     struct vdpau_render_state * render;
 136
 137     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
 138     assert(render);
 139
 140     render->info.h264.slice_count = h->slice_num;
 141     if (render->info.h264.slice_count < 1)
 142         return;
 143
 144     for (int i = 0; i < 2; ++i) {
 145         int foc = s->current_picture_ptr->field_poc[i];
 146         if (foc == INT_MAX)
 147             foc = 0;
 148         render->info.h264.field_order_cnt[i] = foc;
 149     }
 150
 151     render->info.h264.is_reference                           = s->current_picture_ptr->reference ? VDP_TRUE : VDP_FALSE;
 152     render->info.h264.frame_num                              = h->frame_num;
 153     render->info.h264.field_pic_flag                         = s->picture_structure != PICT_FRAME;
 154     render->info.h264.bottom_field_flag                      = s->picture_structure == PICT_BOTTOM_FIELD;
 155     render->info.h264.num_ref_frames                         = h->sps.ref_frame_count;
 156     render->info.h264.mb_adaptive_frame_field_flag           = h->sps.mb_aff;
 157     render->info.h264.constrained_intra_pred_flag            = h->pps.constrained_intra_pred;
 158     render->info.h264.weighted_pred_flag                     = h->pps.weighted_pred;
 159     render->info.h264.weighted_bipred_idc                    = h->pps.weighted_bipred_idc;
 160     render->info.h264.frame_mbs_only_flag                    = h->sps.frame_mbs_only_flag;
 161     render->info.h264.transform_8x8_mode_flag                = h->pps.transform_8x8_mode;
 162     render->info.h264.chroma_qp_index_offset                 = h->pps.chroma_qp_index_offset[0];
 163     render->info.h264.second_chroma_qp_index_offset          = h->pps.chroma_qp_index_offset[1];
 164     render->info.h264.pic_init_qp_minus26                    = h->pps.init_qp - 26;
 165     render->info.h264.num_ref_idx_l0_active_minus1           = h->pps.ref_count[0] - 1;
 166     render->info.h264.num_ref_idx_l1_active_minus1           = h->pps.ref_count[1] - 1;
 167     render->info.h264.log2_max_frame_num_minus4              = h->sps.log2_max_frame_num - 4;
 168     render->info.h264.pic_order_cnt_type                     = h->sps.poc_type;
 169     render->info.h264.log2_max_pic_order_cnt_lsb_minus4      = h->sps.log2_max_poc_lsb - 4;
 170     render->info.h264.delta_pic_order_always_zero_flag       = h->sps.delta_pic_order_always_zero_flag;
 171     render->info.h264.direct_8x8_inference_flag              = h->sps.direct_8x8_inference_flag;
 172     render->info.h264.entropy_coding_mode_flag               = h->pps.cabac;
 173     render->info.h264.pic_order_present_flag                 = h->pps.pic_order_present;
 174     render->info.h264.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
 175     render->info.h264.redundant_pic_cnt_present_flag         = h->pps.redundant_pic_cnt_present;
 176     memcpy(render->info.h264.scaling_lists_4x4, h->pps.scaling_matrix4, sizeof(render->info.h264.scaling_lists_4x4));
 177     memcpy(render->info.h264.scaling_lists_8x8, h->pps.scaling_matrix8, sizeof(render->info.h264.scaling_lists_8x8));
 178
 179     ff_draw_horiz_band(s, 0, s->avctx->height);
 180     render->bitstream_buffers_used = 0;
 181 }
 182
 183 /* @}*/