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 void ff_vdpau_h264_set_reference_frames(MpegEncContext *s)
  41 {
  42     H264Context *h = s->avctx->priv_data;
  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_add_data_chunk(MpegEncContext *s,
 110                              const uint8_t *buf, int buf_size)
 111 {
 112     struct vdpau_render_state * render;
 113
 114     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
 115     assert(render);
 116
 117     render->bitstream_buffers= av_fast_realloc(
 118         render->bitstream_buffers,
 119         &render->bitstream_buffers_allocated,
 120         sizeof(*render->bitstream_buffers)*(render->bitstream_buffers_used + 1)
 121     );
 122
 123     render->bitstream_buffers[render->bitstream_buffers_used].struct_version  = VDP_BITSTREAM_BUFFER_VERSION;
 124     render->bitstream_buffers[render->bitstream_buffers_used].bitstream       = buf;
 125     render->bitstream_buffers[render->bitstream_buffers_used].bitstream_bytes = buf_size;
 126     render->bitstream_buffers_used++;
 127 }
 128
 129 void ff_vdpau_h264_picture_complete(MpegEncContext *s)
 130 {
 131     H264Context *h = s->avctx->priv_data;
 132     struct vdpau_render_state * render;
 133
 134     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
 135     assert(render);
 136
 137     render->info.h264.slice_count = h->slice_num;
 138     if (render->info.h264.slice_count < 1)
 139         return;
 140
 141     for (int i = 0; i < 2; ++i) {
 142         int foc = s->current_picture_ptr->field_poc[i];
 143         if (foc == INT_MAX)
 144             foc = 0;
 145         render->info.h264.field_order_cnt[i] = foc;
 146     }
 147
 148     render->info.h264.is_reference                           = s->current_picture_ptr->reference ? VDP_TRUE : VDP_FALSE;
 149     render->info.h264.frame_num                              = h->frame_num;
 150     render->info.h264.field_pic_flag                         = s->picture_structure != PICT_FRAME;
 151     render->info.h264.bottom_field_flag                      = s->picture_structure == PICT_BOTTOM_FIELD;
 152     render->info.h264.num_ref_frames                         = h->sps.ref_frame_count;
 153     render->info.h264.mb_adaptive_frame_field_flag           = h->sps.mb_aff;
 154     render->info.h264.constrained_intra_pred_flag            = h->pps.constrained_intra_pred;
 155     render->info.h264.weighted_pred_flag                     = h->pps.weighted_pred;
 156     render->info.h264.weighted_bipred_idc                    = h->pps.weighted_bipred_idc;
 157     render->info.h264.frame_mbs_only_flag                    = h->sps.frame_mbs_only_flag;
 158     render->info.h264.transform_8x8_mode_flag                = h->pps.transform_8x8_mode;
 159     render->info.h264.chroma_qp_index_offset                 = h->pps.chroma_qp_index_offset[0];
 160     render->info.h264.second_chroma_qp_index_offset          = h->pps.chroma_qp_index_offset[1];
 161     render->info.h264.pic_init_qp_minus26                    = h->pps.init_qp - 26;
 162     render->info.h264.num_ref_idx_l0_active_minus1           = h->pps.ref_count[0] - 1;
 163     render->info.h264.num_ref_idx_l1_active_minus1           = h->pps.ref_count[1] - 1;
 164     render->info.h264.log2_max_frame_num_minus4              = h->sps.log2_max_frame_num - 4;
 165     render->info.h264.pic_order_cnt_type                     = h->sps.poc_type;
 166     render->info.h264.log2_max_pic_order_cnt_lsb_minus4      = h->sps.log2_max_poc_lsb - 4;
 167     render->info.h264.delta_pic_order_always_zero_flag       = h->sps.delta_pic_order_always_zero_flag;
 168     render->info.h264.direct_8x8_inference_flag              = h->sps.direct_8x8_inference_flag;
 169     render->info.h264.entropy_coding_mode_flag               = h->pps.cabac;
 170     render->info.h264.pic_order_present_flag                 = h->pps.pic_order_present;
 171     render->info.h264.deblocking_filter_control_present_flag = h->pps.deblocking_filter_parameters_present;
 172     render->info.h264.redundant_pic_cnt_present_flag         = h->pps.redundant_pic_cnt_present;
 173     memcpy(render->info.h264.scaling_lists_4x4, h->pps.scaling_matrix4, sizeof(render->info.h264.scaling_lists_4x4));
 174     memcpy(render->info.h264.scaling_lists_8x8, h->pps.scaling_matrix8, sizeof(render->info.h264.scaling_lists_8x8));
 175
 176     ff_draw_horiz_band(s, 0, s->avctx->height);
 177     render->bitstream_buffers_used = 0;
 178 }
 179
 180 void ff_vdpau_mpeg_picture_complete(MpegEncContext *s, const uint8_t *buf,
 181                                     int buf_size, int slice_count)
 182 {
 183     struct vdpau_render_state * render, * last, * next;
 184     int i;
 185
 186     render = (struct vdpau_render_state*)s->current_picture_ptr->data[0];
 187     assert(render);
 188
 189     /* fill VdpPictureInfoMPEG1Or2 struct */
 190     render->info.mpeg.picture_structure          = s->picture_structure;
 191     render->info.mpeg.picture_coding_type        = s->pict_type;
 192     render->info.mpeg.intra_dc_precision         = s->intra_dc_precision;
 193     render->info.mpeg.frame_pred_frame_dct       = s->frame_pred_frame_dct;
 194     render->info.mpeg.concealment_motion_vectors = s->concealment_motion_vectors;
 195     render->info.mpeg.intra_vlc_format           = s->intra_vlc_format;
 196     render->info.mpeg.alternate_scan             = s->alternate_scan;
 197     render->info.mpeg.q_scale_type               = s->q_scale_type;
 198     render->info.mpeg.top_field_first            = s->top_field_first;
 199     render->info.mpeg.full_pel_forward_vector    = s->full_pel[0]; // MPEG-1 only.  Set 0 for MPEG-2
 200     render->info.mpeg.full_pel_backward_vector   = s->full_pel[1]; // MPEG-1 only.  Set 0 for MPEG-2
 201     render->info.mpeg.f_code[0][0]               = s->mpeg_f_code[0][0]; // For MPEG-1 fill both horiz. & vert.
 202     render->info.mpeg.f_code[0][1]               = s->mpeg_f_code[0][1];
 203     render->info.mpeg.f_code[1][0]               = s->mpeg_f_code[1][0];
 204     render->info.mpeg.f_code[1][1]               = s->mpeg_f_code[1][1];
 205     for (i = 0; i < 64; ++i) {
 206         render->info.mpeg.intra_quantizer_matrix[i]     = s->intra_matrix[i];
 207         render->info.mpeg.non_intra_quantizer_matrix[i] = s->inter_matrix[i];
 208     }
 209
 210     render->info.mpeg.forward_reference          = VDP_INVALID_HANDLE;
 211     render->info.mpeg.backward_reference         = VDP_INVALID_HANDLE;
 212
 213     switch(s->pict_type){
 214     case  FF_B_TYPE:
 215         next = (struct vdpau_render_state*)s->next_picture.data[0];
 216         assert(next);
 217         render->info.mpeg.backward_reference     = next->surface;
 218         // no return here, going to set forward prediction
 219     case  FF_P_TYPE:
 220         last = (struct vdpau_render_state*)s->last_picture.data[0];
 221         if (!last) // FIXME: Does this test make sense?
 222             last = render; // predict second field from the first
 223         render->info.mpeg.forward_reference      = last->surface;
 224     }
 225
 226     ff_vdpau_add_data_chunk(s, buf, buf_size);
 227
 228     render->info.mpeg.slice_count                = slice_count;
 229
 230     if (slice_count)
 231         ff_draw_horiz_band(s, 0, s->avctx->height);
 232     render->bitstream_buffers_used               = 0;
 233 }
 234
 235 /* @}*/