| 1 | /* |
| 2 | * H.26L/H.264/AVC/JVT/14496-10/... decoder |
| 3 | * Copyright (c) 2003 Michael Niedermayer <michaelni@gmx.at> |
| 4 | * |
| 5 | * This file is part of FFmpeg. |
| 6 | * |
| 7 | * FFmpeg is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * FFmpeg is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with FFmpeg; if not, write to the Free Software |
| 19 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
| 20 | */ |
| 21 | |
| 22 | /** |
| 23 | * @file |
| 24 | * H.264 / AVC / MPEG4 part10 codec. |
| 25 | * @author Michael Niedermayer <michaelni@gmx.at> |
| 26 | */ |
| 27 | |
| 28 | #include "libavutil/avassert.h" |
| 29 | #include "libavutil/imgutils.h" |
| 30 | #include "libavutil/timer.h" |
| 31 | #include "internal.h" |
| 32 | #include "cabac.h" |
| 33 | #include "cabac_functions.h" |
| 34 | #include "error_resilience.h" |
| 35 | #include "avcodec.h" |
| 36 | #include "h264.h" |
| 37 | #include "h264data.h" |
| 38 | #include "h264chroma.h" |
| 39 | #include "h264_mvpred.h" |
| 40 | #include "golomb.h" |
| 41 | #include "mathops.h" |
| 42 | #include "mpegutils.h" |
| 43 | #include "rectangle.h" |
| 44 | #include "thread.h" |
| 45 | #include "vdpau_internal.h" |
| 46 | |
| 47 | void ff_h264_unref_picture(H264Context *h, H264Picture *pic) |
| 48 | { |
| 49 | int off = offsetof(H264Picture, tf) + sizeof(pic->tf); |
| 50 | int i; |
| 51 | |
| 52 | if (!pic->f.buf[0]) |
| 53 | return; |
| 54 | |
| 55 | ff_thread_release_buffer(h->avctx, &pic->tf); |
| 56 | av_buffer_unref(&pic->hwaccel_priv_buf); |
| 57 | |
| 58 | av_buffer_unref(&pic->qscale_table_buf); |
| 59 | av_buffer_unref(&pic->mb_type_buf); |
| 60 | for (i = 0; i < 2; i++) { |
| 61 | av_buffer_unref(&pic->motion_val_buf[i]); |
| 62 | av_buffer_unref(&pic->ref_index_buf[i]); |
| 63 | } |
| 64 | |
| 65 | memset((uint8_t*)pic + off, 0, sizeof(*pic) - off); |
| 66 | } |
| 67 | |
| 68 | int ff_h264_ref_picture(H264Context *h, H264Picture *dst, H264Picture *src) |
| 69 | { |
| 70 | int ret, i; |
| 71 | |
| 72 | av_assert0(!dst->f.buf[0]); |
| 73 | av_assert0(src->f.buf[0]); |
| 74 | |
| 75 | src->tf.f = &src->f; |
| 76 | dst->tf.f = &dst->f; |
| 77 | ret = ff_thread_ref_frame(&dst->tf, &src->tf); |
| 78 | if (ret < 0) |
| 79 | goto fail; |
| 80 | |
| 81 | dst->qscale_table_buf = av_buffer_ref(src->qscale_table_buf); |
| 82 | dst->mb_type_buf = av_buffer_ref(src->mb_type_buf); |
| 83 | if (!dst->qscale_table_buf || !dst->mb_type_buf) |
| 84 | goto fail; |
| 85 | dst->qscale_table = src->qscale_table; |
| 86 | dst->mb_type = src->mb_type; |
| 87 | |
| 88 | for (i = 0; i < 2; i++) { |
| 89 | dst->motion_val_buf[i] = av_buffer_ref(src->motion_val_buf[i]); |
| 90 | dst->ref_index_buf[i] = av_buffer_ref(src->ref_index_buf[i]); |
| 91 | if (!dst->motion_val_buf[i] || !dst->ref_index_buf[i]) |
| 92 | goto fail; |
| 93 | dst->motion_val[i] = src->motion_val[i]; |
| 94 | dst->ref_index[i] = src->ref_index[i]; |
| 95 | } |
| 96 | |
| 97 | if (src->hwaccel_picture_private) { |
| 98 | dst->hwaccel_priv_buf = av_buffer_ref(src->hwaccel_priv_buf); |
| 99 | if (!dst->hwaccel_priv_buf) |
| 100 | goto fail; |
| 101 | dst->hwaccel_picture_private = dst->hwaccel_priv_buf->data; |
| 102 | } |
| 103 | |
| 104 | for (i = 0; i < 2; i++) |
| 105 | dst->field_poc[i] = src->field_poc[i]; |
| 106 | |
| 107 | memcpy(dst->ref_poc, src->ref_poc, sizeof(src->ref_poc)); |
| 108 | memcpy(dst->ref_count, src->ref_count, sizeof(src->ref_count)); |
| 109 | |
| 110 | dst->poc = src->poc; |
| 111 | dst->frame_num = src->frame_num; |
| 112 | dst->mmco_reset = src->mmco_reset; |
| 113 | dst->pic_id = src->pic_id; |
| 114 | dst->long_ref = src->long_ref; |
| 115 | dst->mbaff = src->mbaff; |
| 116 | dst->field_picture = src->field_picture; |
| 117 | dst->needs_realloc = src->needs_realloc; |
| 118 | dst->reference = src->reference; |
| 119 | dst->crop = src->crop; |
| 120 | dst->crop_left = src->crop_left; |
| 121 | dst->crop_top = src->crop_top; |
| 122 | dst->recovered = src->recovered; |
| 123 | dst->invalid_gap = src->invalid_gap; |
| 124 | dst->sei_recovery_frame_cnt = src->sei_recovery_frame_cnt; |
| 125 | |
| 126 | return 0; |
| 127 | fail: |
| 128 | ff_h264_unref_picture(h, dst); |
| 129 | return ret; |
| 130 | } |
| 131 | |
| 132 | void ff_h264_set_erpic(ERPicture *dst, H264Picture *src) |
| 133 | { |
| 134 | #if CONFIG_ERROR_RESILIENCE |
| 135 | int i; |
| 136 | |
| 137 | memset(dst, 0, sizeof(*dst)); |
| 138 | |
| 139 | if (!src) |
| 140 | return; |
| 141 | |
| 142 | dst->f = &src->f; |
| 143 | dst->tf = &src->tf; |
| 144 | |
| 145 | for (i = 0; i < 2; i++) { |
| 146 | dst->motion_val[i] = src->motion_val[i]; |
| 147 | dst->ref_index[i] = src->ref_index[i]; |
| 148 | } |
| 149 | |
| 150 | dst->mb_type = src->mb_type; |
| 151 | dst->field_picture = src->field_picture; |
| 152 | #endif /* CONFIG_ERROR_RESILIENCE */ |
| 153 | } |
| 154 | |
| 155 | int ff_h264_field_end(H264Context *h, int in_setup) |
| 156 | { |
| 157 | AVCodecContext *const avctx = h->avctx; |
| 158 | int err = 0; |
| 159 | h->mb_y = 0; |
| 160 | |
| 161 | if (CONFIG_H264_VDPAU_DECODER && |
| 162 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) |
| 163 | ff_vdpau_h264_set_reference_frames(h); |
| 164 | |
| 165 | if (in_setup || !(avctx->active_thread_type & FF_THREAD_FRAME)) { |
| 166 | if (!h->droppable) { |
| 167 | err = ff_h264_execute_ref_pic_marking(h, h->mmco, h->mmco_index); |
| 168 | h->prev_poc_msb = h->poc_msb; |
| 169 | h->prev_poc_lsb = h->poc_lsb; |
| 170 | } |
| 171 | h->prev_frame_num_offset = h->frame_num_offset; |
| 172 | h->prev_frame_num = h->frame_num; |
| 173 | h->outputed_poc = h->next_outputed_poc; |
| 174 | } |
| 175 | |
| 176 | if (avctx->hwaccel) { |
| 177 | if (avctx->hwaccel->end_frame(avctx) < 0) |
| 178 | av_log(avctx, AV_LOG_ERROR, |
| 179 | "hardware accelerator failed to decode picture\n"); |
| 180 | } |
| 181 | |
| 182 | if (CONFIG_H264_VDPAU_DECODER && |
| 183 | h->avctx->codec->capabilities & CODEC_CAP_HWACCEL_VDPAU) |
| 184 | ff_vdpau_h264_picture_complete(h); |
| 185 | |
| 186 | #if CONFIG_ERROR_RESILIENCE |
| 187 | /* |
| 188 | * FIXME: Error handling code does not seem to support interlaced |
| 189 | * when slices span multiple rows |
| 190 | * The ff_er_add_slice calls don't work right for bottom |
| 191 | * fields; they cause massive erroneous error concealing |
| 192 | * Error marking covers both fields (top and bottom). |
| 193 | * This causes a mismatched s->error_count |
| 194 | * and a bad error table. Further, the error count goes to |
| 195 | * INT_MAX when called for bottom field, because mb_y is |
| 196 | * past end by one (callers fault) and resync_mb_y != 0 |
| 197 | * causes problems for the first MB line, too. |
| 198 | */ |
| 199 | if (!FIELD_PICTURE(h) && h->current_slice && !h->sps.new) { |
| 200 | ff_h264_set_erpic(&h->er.cur_pic, h->cur_pic_ptr); |
| 201 | ff_er_frame_end(&h->er); |
| 202 | } |
| 203 | #endif /* CONFIG_ERROR_RESILIENCE */ |
| 204 | |
| 205 | if (!in_setup && !h->droppable) |
| 206 | ff_thread_report_progress(&h->cur_pic_ptr->tf, INT_MAX, |
| 207 | h->picture_structure == PICT_BOTTOM_FIELD); |
| 208 | emms_c(); |
| 209 | |
| 210 | h->current_slice = 0; |
| 211 | |
| 212 | return err; |
| 213 | } |