| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * RV10/RV20 decoder | ||
| 3 | * Copyright (c) 2000,2001 Fabrice Bellard | ||
| 4 | * Copyright (c) 2002-2004 Michael Niedermayer | ||
| 5 | * | ||
| 6 | * This file is part of FFmpeg. | ||
| 7 | * | ||
| 8 | * FFmpeg is free software; you can redistribute it and/or | ||
| 9 | * modify it under the terms of the GNU Lesser General Public | ||
| 10 | * License as published by the Free Software Foundation; either | ||
| 11 | * version 2.1 of the License, or (at your option) any later version. | ||
| 12 | * | ||
| 13 | * FFmpeg is distributed in the hope that it will be useful, | ||
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
| 16 | * Lesser General Public License for more details. | ||
| 17 | * | ||
| 18 | * You should have received a copy of the GNU Lesser General Public | ||
| 19 | * License along with FFmpeg; if not, write to the Free Software | ||
| 20 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | ||
| 21 | */ | ||
| 22 | |||
| 23 | /** | ||
| 24 | * @file | ||
| 25 | * RV10/RV20 decoder | ||
| 26 | */ | ||
| 27 | |||
| 28 | #include <inttypes.h> | ||
| 29 | |||
| 30 | #include "libavutil/imgutils.h" | ||
| 31 | #include "libavutil/thread.h" | ||
| 32 | |||
| 33 | #include "avcodec.h" | ||
| 34 | #include "codec_internal.h" | ||
| 35 | #include "decode.h" | ||
| 36 | #include "error_resilience.h" | ||
| 37 | #include "h263.h" | ||
| 38 | #include "h263data.h" | ||
| 39 | #include "h263dec.h" | ||
| 40 | #include "mpeg_er.h" | ||
| 41 | #include "mpegvideo.h" | ||
| 42 | #include "mpegvideodec.h" | ||
| 43 | #include "mpeg4video.h" | ||
| 44 | #include "mpegvideodata.h" | ||
| 45 | #include "rv10dec.h" | ||
| 46 | |||
| 47 | #define RV_GET_MAJOR_VER(x) ((x) >> 28) | ||
| 48 | #define RV_GET_MINOR_VER(x) (((x) >> 20) & 0xFF) | ||
| 49 | #define RV_GET_MICRO_VER(x) (((x) >> 12) & 0xFF) | ||
| 50 | |||
| 51 | #define MAX_VLC_ENTRIES 1023 // Note: Does not include the skip entries. | ||
| 52 | #define DC_VLC_BITS 9 | ||
| 53 | |||
| 54 | typedef struct RVDecContext { | ||
| 55 | H263DecContext h; | ||
| 56 | int sub_id; | ||
| 57 | int orig_width, orig_height; | ||
| 58 | } RVDecContext; | ||
| 59 | |||
| 60 | /* (run, length) encoded value for the symbols table. The actual symbols | ||
| 61 | * are run..run - length (mod 256). | ||
| 62 | * The last two entries in the following table apply to luma only. | ||
| 63 | * The skip values are not included in this list. */ | ||
| 64 | static const uint8_t rv_sym_run_len[][2] = { | ||
| 65 | { 0, 0 }, { 1, 0 }, { 255, 0 }, { 3, 1 }, { 254, 1 }, | ||
| 66 | { 7, 3 }, { 252, 3 }, { 15, 7 }, { 248, 7 }, { 31, 15 }, | ||
| 67 | { 240, 15 }, { 63, 31 }, { 224, 31 }, { 127, 63 }, { 192, 63 }, | ||
| 68 | { 255, 127 }, { 128, 127 }, { 127, 255 }, { 128, 255 }, | ||
| 69 | }; | ||
| 70 | |||
| 71 | /* entry[i] of the following tables gives | ||
| 72 | * the number of VLC codes of length i + 2. */ | ||
| 73 | static const uint16_t rv_lum_len_count[15] = { | ||
| 74 | 1, 0, 2, 4, 8, 16, 32, 0, 64, 0, 128, 0, 256, 0, 512, | ||
| 75 | }; | ||
| 76 | |||
| 77 | static const uint16_t rv_chrom_len_count[15] = { | ||
| 78 | 1, 2, 4, 0, 8, 0, 16, 0, 32, 0, 64, 0, 128, 0, 256, | ||
| 79 | }; | ||
| 80 | |||
| 81 | static VLCElem rv_dc_lum[1472], rv_dc_chrom[992]; | ||
| 82 | |||
| 83 | ✗ | int ff_rv_decode_dc(H263DecContext *const h, int n) | |
| 84 | { | ||
| 85 | int code; | ||
| 86 | |||
| 87 | ✗ | if (n < 4) { | |
| 88 | ✗ | code = get_vlc2(&h->gb, rv_dc_lum, DC_VLC_BITS, 2); | |
| 89 | } else { | ||
| 90 | ✗ | code = get_vlc2(&h->gb, rv_dc_chrom, DC_VLC_BITS, 2); | |
| 91 | ✗ | if (code < 0) { | |
| 92 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "chroma dc error\n"); | |
| 93 | ✗ | return -1; | |
| 94 | } | ||
| 95 | } | ||
| 96 | ✗ | return code; | |
| 97 | } | ||
| 98 | |||
| 99 | /* read RV 1.0 compatible frame header */ | ||
| 100 | 150 | static int rv10_decode_picture_header(H263DecContext *const h) | |
| 101 | { | ||
| 102 | int mb_count, pb_frame, marker, mb_xy; | ||
| 103 | |||
| 104 | 150 | marker = get_bits1(&h->gb); | |
| 105 | |||
| 106 |
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150 | if (get_bits1(&h->gb)) |
| 107 | 135 | h->c.pict_type = AV_PICTURE_TYPE_P; | |
| 108 | else | ||
| 109 | 15 | h->c.pict_type = AV_PICTURE_TYPE_I; | |
| 110 | |||
| 111 |
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150 | if (!marker) |
| 112 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "marker missing\n"); | |
| 113 | |||
| 114 | 150 | pb_frame = get_bits1(&h->gb); | |
| 115 | |||
| 116 | ff_dlog(h->c.avctx, "pict_type=%d pb_frame=%d\n", h->c.pict_type, pb_frame); | ||
| 117 | |||
| 118 |
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150 | if (pb_frame) { |
| 119 | ✗ | avpriv_request_sample(h->c.avctx, "PB-frame"); | |
| 120 | ✗ | return AVERROR_PATCHWELCOME; | |
| 121 | } | ||
| 122 | |||
| 123 | 150 | h->c.qscale = get_bits(&h->gb, 5); | |
| 124 |
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150 | if (h->c.qscale == 0) { |
| 125 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "Invalid qscale value: 0\n"); | |
| 126 | ✗ | return AVERROR_INVALIDDATA; | |
| 127 | } | ||
| 128 | |||
| 129 |
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150 | if (h->c.pict_type == AV_PICTURE_TYPE_I) { |
| 130 |
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15 | if (h->rv10_version == 3) { |
| 131 | /* specific MPEG like DC coding not used */ | ||
| 132 | ✗ | h->c.last_dc[0] = get_bits(&h->gb, 8); | |
| 133 | ✗ | h->c.last_dc[1] = get_bits(&h->gb, 8); | |
| 134 | ✗ | h->c.last_dc[2] = get_bits(&h->gb, 8); | |
| 135 | ff_dlog(h->c.avctx, "DC:%d %d %d\n", h->c.last_dc[0], | ||
| 136 | h->c.last_dc[1], h->c.last_dc[2]); | ||
| 137 | } | ||
| 138 | } | ||
| 139 | /* if multiple packets per frame are sent, the position at which | ||
| 140 | * to display the macroblocks is coded here */ | ||
| 141 | |||
| 142 | 150 | mb_xy = h->c.mb_x + h->c.mb_y * h->c.mb_width; | |
| 143 |
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150 | if (show_bits(&h->gb, 12) == 0 || (mb_xy && mb_xy < h->c.mb_num)) { |
| 144 | 150 | h->c.mb_x = get_bits(&h->gb, 6); /* mb_x */ | |
| 145 | 150 | h->c.mb_y = get_bits(&h->gb, 6); /* mb_y */ | |
| 146 | 150 | mb_count = get_bits(&h->gb, 12); | |
| 147 | } else { | ||
| 148 | ✗ | h->c.mb_x = 0; | |
| 149 | ✗ | h->c.mb_y = 0; | |
| 150 | ✗ | mb_count = h->c.mb_width * h->c.mb_height; | |
| 151 | } | ||
| 152 | 150 | skip_bits(&h->gb, 3); /* ignored */ | |
| 153 | |||
| 154 | 150 | return mb_count; | |
| 155 | } | ||
| 156 | |||
| 157 | 742 | static int rv20_decode_picture_header(RVDecContext *rv, int whole_size) | |
| 158 | { | ||
| 159 | static const enum AVPictureType pict_types[] = | ||
| 160 | { AV_PICTURE_TYPE_I, AV_PICTURE_TYPE_I /* hmm ... */, | ||
| 161 | AV_PICTURE_TYPE_P, AV_PICTURE_TYPE_B }; | ||
| 162 | 742 | H263DecContext *const h = &rv->h; | |
| 163 | int seq, mb_pos, ret; | ||
| 164 | int rpr_max; | ||
| 165 | |||
| 166 | 742 | h->c.pict_type = pict_types[get_bits(&h->gb, 2)]; | |
| 167 | |||
| 168 |
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742 | if (h->c.low_delay && h->c.pict_type == AV_PICTURE_TYPE_B) { |
| 169 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "low delay B\n"); | |
| 170 | ✗ | return -1; | |
| 171 | } | ||
| 172 |
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742 | if (!h->c.last_pic.ptr && h->c.pict_type == AV_PICTURE_TYPE_B) { |
| 173 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "early B-frame\n"); | |
| 174 | ✗ | return AVERROR_INVALIDDATA; | |
| 175 | } | ||
| 176 | |||
| 177 |
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742 | if (get_bits1(&h->gb)) { |
| 178 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "reserved bit set\n"); | |
| 179 | ✗ | return AVERROR_INVALIDDATA; | |
| 180 | } | ||
| 181 | |||
| 182 | 742 | h->c.qscale = get_bits(&h->gb, 5); | |
| 183 |
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742 | if (h->c.qscale == 0) { |
| 184 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "Invalid qscale value: 0\n"); | |
| 185 | ✗ | return AVERROR_INVALIDDATA; | |
| 186 | } | ||
| 187 | |||
| 188 |
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742 | if (RV_GET_MINOR_VER(rv->sub_id) >= 2) |
| 189 |
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592 | h->loop_filter = get_bits1(&h->gb) && !h->c.avctx->lowres; |
| 190 | |||
| 191 |
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742 | if (RV_GET_MINOR_VER(rv->sub_id) <= 1) |
| 192 | 150 | seq = get_bits(&h->gb, 8) << 7; | |
| 193 | else | ||
| 194 | 592 | seq = get_bits(&h->gb, 13) << 2; | |
| 195 | |||
| 196 | 742 | rpr_max = h->c.avctx->extradata[1] & 7; | |
| 197 |
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742 | if (rpr_max) { |
| 198 | int f, new_w, new_h; | ||
| 199 | 592 | int rpr_bits = av_log2(rpr_max) + 1; | |
| 200 | |||
| 201 | 592 | f = get_bits(&h->gb, rpr_bits); | |
| 202 | |||
| 203 |
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592 | if (f) { |
| 204 | ✗ | if (h->c.avctx->extradata_size < 8 + 2 * f) { | |
| 205 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "Extradata too small.\n"); | |
| 206 | ✗ | return AVERROR_INVALIDDATA; | |
| 207 | } | ||
| 208 | |||
| 209 | ✗ | new_w = 4 * h->c.avctx->extradata[6 + 2 * f]; | |
| 210 | ✗ | new_h = 4 * h->c.avctx->extradata[7 + 2 * f]; | |
| 211 | } else { | ||
| 212 | 592 | new_w = rv->orig_width; | |
| 213 | 592 | new_h = rv->orig_height; | |
| 214 | } | ||
| 215 |
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592 | if (new_w != h->c.width || new_h != h->c.height || !h->c.context_initialized) { |
| 216 | ✗ | AVRational old_aspect = h->c.avctx->sample_aspect_ratio; | |
| 217 | ✗ | av_log(h->c.avctx, AV_LOG_DEBUG, | |
| 218 | "attempting to change resolution to %dx%d\n", new_w, new_h); | ||
| 219 | ✗ | if (av_image_check_size(new_w, new_h, 0, h->c.avctx) < 0) | |
| 220 | ✗ | return AVERROR_INVALIDDATA; | |
| 221 | |||
| 222 | ✗ | if (whole_size < (new_w + 15)/16 * ((new_h + 15)/16) / 8) | |
| 223 | ✗ | return AVERROR_INVALIDDATA; | |
| 224 | |||
| 225 | ✗ | ff_mpv_common_end(&h->c); | |
| 226 | |||
| 227 | // attempt to keep aspect during typical resolution switches | ||
| 228 | ✗ | if (!old_aspect.num) | |
| 229 | ✗ | old_aspect = (AVRational){1, 1}; | |
| 230 | ✗ | if (2 * (int64_t)new_w * h->c.height == (int64_t)new_h * h->c.width) | |
| 231 | ✗ | h->c.avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){2, 1}); | |
| 232 | ✗ | if ((int64_t)new_w * h->c.height == 2 * (int64_t)new_h * h->c.width) | |
| 233 | ✗ | h->c.avctx->sample_aspect_ratio = av_mul_q(old_aspect, (AVRational){1, 2}); | |
| 234 | |||
| 235 | ✗ | ret = ff_set_dimensions(h->c.avctx, new_w, new_h); | |
| 236 | ✗ | if (ret < 0) | |
| 237 | ✗ | return ret; | |
| 238 | |||
| 239 | ✗ | h->c.width = new_w; | |
| 240 | ✗ | h->c.height = new_h; | |
| 241 | ✗ | if ((ret = ff_mpv_common_init(&h->c)) < 0) | |
| 242 | ✗ | return ret; | |
| 243 | } | ||
| 244 | |||
| 245 |
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592 | if (h->c.avctx->debug & FF_DEBUG_PICT_INFO) { |
| 246 | ✗ | av_log(h->c.avctx, AV_LOG_DEBUG, "F %d/%d/%d\n", f, rpr_bits, rpr_max); | |
| 247 | } | ||
| 248 | } | ||
| 249 |
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742 | if (av_image_check_size(h->c.width, h->c.height, 0, h->c.avctx) < 0) |
| 250 | ✗ | return AVERROR_INVALIDDATA; | |
| 251 | |||
| 252 | 742 | mb_pos = ff_h263_decode_mba(h); | |
| 253 | |||
| 254 | 742 | seq |= h->c.time & ~0x7FFF; | |
| 255 |
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742 | if (seq - h->c.time > 0x4000) |
| 256 | ✗ | seq -= 0x8000; | |
| 257 |
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742 | if (seq - h->c.time < -0x4000) |
| 258 | ✗ | seq += 0x8000; | |
| 259 | |||
| 260 |
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742 | if (seq != h->c.time) { |
| 261 |
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292 | if (h->c.pict_type != AV_PICTURE_TYPE_B) { |
| 262 | 220 | h->c.time = seq; | |
| 263 | 220 | h->c.pp_time = h->c.time - h->c.last_non_b_time; | |
| 264 | 220 | h->c.last_non_b_time = h->c.time; | |
| 265 | } else { | ||
| 266 | 72 | h->c.time = seq; | |
| 267 | 72 | h->c.pb_time = h->c.pp_time - (h->c.last_non_b_time - h->c.time); | |
| 268 | } | ||
| 269 | } | ||
| 270 |
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742 | if (h->c.pict_type == AV_PICTURE_TYPE_B) { |
| 271 |
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181 | if (h->c.pp_time <=h->c.pb_time || h->c.pp_time <= h->c.pp_time - h->c.pb_time || h->c.pp_time<=0) { |
| 272 | ✗ | av_log(h->c.avctx, AV_LOG_DEBUG, | |
| 273 | "messed up order, possible from seeking? skipping current B-frame\n"); | ||
| 274 | #define ERROR_SKIP_FRAME -123 | ||
| 275 | ✗ | return ERROR_SKIP_FRAME; | |
| 276 | } | ||
| 277 | 181 | ff_mpeg4_init_direct_mv(&h->c); | |
| 278 | } | ||
| 279 | |||
| 280 | 742 | h->c.no_rounding = get_bits1(&h->gb); | |
| 281 | |||
| 282 |
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742 | if (RV_GET_MINOR_VER(rv->sub_id) <= 1 && h->c.pict_type == AV_PICTURE_TYPE_B) |
| 283 | // binary decoder reads 3+2 bits here but they don't seem to be used | ||
| 284 | ✗ | skip_bits(&h->gb, 5); | |
| 285 | |||
| 286 | 742 | h->c.h263_aic = h->c.pict_type == AV_PICTURE_TYPE_I; | |
| 287 |
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742 | if (h->c.h263_aic) { |
| 288 | 67 | h->c.y_dc_scale_table = | |
| 289 | 67 | h->c.c_dc_scale_table = ff_aic_dc_scale_table; | |
| 290 | } else { | ||
| 291 | 675 | h->c.y_dc_scale_table = | |
| 292 | 675 | h->c.c_dc_scale_table = ff_mpeg1_dc_scale_table; | |
| 293 | } | ||
| 294 |
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742 | if (!h->c.avctx->lowres) |
| 295 | 150 | h->loop_filter = 1; | |
| 296 | |||
| 297 |
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742 | if (h->c.avctx->debug & FF_DEBUG_PICT_INFO) { |
| 298 | ✗ | av_log(h->c.avctx, AV_LOG_INFO, | |
| 299 | "num:%5d x:%2d y:%2d type:%d qscale:%2d rnd:%d\n", | ||
| 300 | seq, h->c.mb_x, h->c.mb_y, h->c.pict_type, h->c.qscale, | ||
| 301 | h->c.no_rounding); | ||
| 302 | } | ||
| 303 | |||
| 304 |
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742 | av_assert0(h->c.pict_type != AV_PICTURE_TYPE_B || !h->c.low_delay); |
| 305 | |||
| 306 | 742 | return h->c.mb_width * h->c.mb_height - mb_pos; | |
| 307 | } | ||
| 308 | |||
| 309 | 26 | static av_cold void rv10_build_vlc(VLCElem vlc[], int table_size, | |
| 310 | const uint16_t len_count[15], | ||
| 311 | const uint8_t sym_rl[][2], int sym_rl_elems) | ||
| 312 | { | ||
| 313 | uint16_t syms[MAX_VLC_ENTRIES]; | ||
| 314 | uint8_t lens[MAX_VLC_ENTRIES]; | ||
| 315 | 26 | unsigned nb_syms = 0, nb_lens = 0; | |
| 316 | |||
| 317 |
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494 | for (unsigned i = 0; i < sym_rl_elems; i++) { |
| 318 | 468 | unsigned cur_sym = sym_rl[i][0]; | |
| 319 |
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20410 | for (unsigned tmp = nb_syms + sym_rl[i][1]; nb_syms <= tmp; nb_syms++) |
| 320 | 19942 | syms[nb_syms] = 0xFF & cur_sym--; | |
| 321 | } | ||
| 322 | |||
| 323 |
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416 | for (unsigned i = 0; i < 15; i++) |
| 324 |
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20332 | for (unsigned tmp = nb_lens + len_count[i]; nb_lens < tmp; nb_lens++) |
| 325 | 19942 | lens[nb_lens] = i + 2; | |
| 326 | av_assert1(nb_lens == nb_syms); | ||
| 327 | 26 | ff_vlc_init_table_from_lengths(vlc, table_size, DC_VLC_BITS, nb_lens, | |
| 328 | lens, 1, syms, 2, 2, 0, 0); | ||
| 329 | 26 | } | |
| 330 | |||
| 331 | 13 | static av_cold void rv10_init_static(void) | |
| 332 | { | ||
| 333 | 13 | rv10_build_vlc(rv_dc_lum, FF_ARRAY_ELEMS(rv_dc_lum), rv_lum_len_count, | |
| 334 | rv_sym_run_len, FF_ARRAY_ELEMS(rv_sym_run_len)); | ||
| 335 |
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65 | for (int i = 0; i < 1 << (DC_VLC_BITS - 7 /* Length of skip prefix */); i++) { |
| 336 | /* All codes beginning with 0x7F have the same length and value. | ||
| 337 | * Modifying the table directly saves us the useless subtables. */ | ||
| 338 | 52 | rv_dc_lum[(0x7F << (DC_VLC_BITS - 7)) + i].sym = 255; | |
| 339 | 52 | rv_dc_lum[(0x7F << (DC_VLC_BITS - 7)) + i].len = 18; | |
| 340 | } | ||
| 341 | 13 | rv10_build_vlc(rv_dc_chrom, FF_ARRAY_ELEMS(rv_dc_chrom), rv_chrom_len_count, | |
| 342 | rv_sym_run_len, FF_ARRAY_ELEMS(rv_sym_run_len) - 2); | ||
| 343 |
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26 | for (int i = 0; i < 1 << (DC_VLC_BITS - 9 /* Length of skip prefix */); i++) { |
| 344 | /* Same as above. */ | ||
| 345 | 13 | rv_dc_chrom[(0x1FE << (DC_VLC_BITS - 9)) + i].sym = 255; | |
| 346 | 13 | rv_dc_chrom[(0x1FE << (DC_VLC_BITS - 9)) + i].len = 18; | |
| 347 | } | ||
| 348 | 13 | } | |
| 349 | |||
| 350 | 20 | static av_cold int rv10_decode_init(AVCodecContext *avctx) | |
| 351 | { | ||
| 352 | static AVOnce init_static_once = AV_ONCE_INIT; | ||
| 353 | 20 | RVDecContext *rv = avctx->priv_data; | |
| 354 | 20 | H263DecContext *const h = &rv->h; | |
| 355 | int major_ver, minor_ver, micro_ver, ret; | ||
| 356 | |||
| 357 |
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20 | if (avctx->extradata_size < 8) { |
| 358 | ✗ | av_log(avctx, AV_LOG_ERROR, "Extradata is too small.\n"); | |
| 359 | ✗ | return AVERROR_INVALIDDATA; | |
| 360 | } | ||
| 361 |
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20 | if ((ret = av_image_check_size(avctx->coded_width, |
| 362 | 20 | avctx->coded_height, 0, avctx)) < 0) | |
| 363 | ✗ | return ret; | |
| 364 | |||
| 365 | 20 | ret = ff_h263_decode_init(avctx); | |
| 366 |
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20 | if (ret < 0) |
| 367 | ✗ | return ret; | |
| 368 | |||
| 369 | 20 | rv->orig_width = avctx->coded_width; | |
| 370 | 20 | rv->orig_height = avctx->coded_height; | |
| 371 | |||
| 372 | 20 | h->h263_long_vectors = avctx->extradata[3] & 1; | |
| 373 | 20 | rv->sub_id = AV_RB32A(avctx->extradata + 4); | |
| 374 |
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20 | if (avctx->codec_id == AV_CODEC_ID_RV20) { |
| 375 | 11 | h->modified_quant = 1; | |
| 376 | 11 | h->c.chroma_qscale_table = ff_h263_chroma_qscale_table; | |
| 377 | } | ||
| 378 | |||
| 379 | 20 | major_ver = RV_GET_MAJOR_VER(rv->sub_id); | |
| 380 | 20 | minor_ver = RV_GET_MINOR_VER(rv->sub_id); | |
| 381 | 20 | micro_ver = RV_GET_MICRO_VER(rv->sub_id); | |
| 382 | |||
| 383 |
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20 | switch (major_ver) { |
| 384 | 9 | case 1: | |
| 385 |
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9 | h->rv10_version = micro_ver ? 3 : 1; |
| 386 | 9 | h->c.obmc = micro_ver == 2; | |
| 387 | 9 | break; | |
| 388 | 11 | case 2: | |
| 389 |
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11 | if (minor_ver >= 2) { |
| 390 | 3 | h->c.low_delay = 0; | |
| 391 | 3 | avctx->has_b_frames = 1; | |
| 392 | } | ||
| 393 | 11 | break; | |
| 394 | ✗ | default: | |
| 395 | ✗ | av_log(avctx, AV_LOG_ERROR, "unknown header %X\n", rv->sub_id); | |
| 396 | ✗ | avpriv_request_sample(avctx, "RV1/2 version"); | |
| 397 | ✗ | return AVERROR_PATCHWELCOME; | |
| 398 | } | ||
| 399 | |||
| 400 |
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20 | if (avctx->debug & FF_DEBUG_PICT_INFO) { |
| 401 | ✗ | av_log(avctx, AV_LOG_DEBUG, "ver:%X ver0:%"PRIX32"\n", rv->sub_id, | |
| 402 | ✗ | AV_RL32A(avctx->extradata)); | |
| 403 | } | ||
| 404 | |||
| 405 | /* init static VLCs */ | ||
| 406 | 20 | ff_thread_once(&init_static_once, rv10_init_static); | |
| 407 | |||
| 408 | 20 | return 0; | |
| 409 | } | ||
| 410 | |||
| 411 | 892 | static int rv10_decode_packet(AVCodecContext *avctx, const uint8_t *buf, | |
| 412 | int buf_size, int buf_size2, int whole_size) | ||
| 413 | { | ||
| 414 | 892 | RVDecContext *rv = avctx->priv_data; | |
| 415 | 892 | H263DecContext *const h = &rv->h; | |
| 416 | int mb_count, mb_pos, left, start_mb_x, active_bits_size, ret; | ||
| 417 | |||
| 418 | 892 | active_bits_size = buf_size * 8; | |
| 419 | 892 | init_get_bits(&h->gb, buf, FFMAX(buf_size, buf_size2) * 8); | |
| 420 |
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892 | if (h->c.codec_id == AV_CODEC_ID_RV10) |
| 421 | 150 | mb_count = rv10_decode_picture_header(h); | |
| 422 | else | ||
| 423 | 742 | mb_count = rv20_decode_picture_header(rv, whole_size); | |
| 424 |
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892 | if (mb_count < 0) { |
| 425 | ✗ | if (mb_count != ERROR_SKIP_FRAME) | |
| 426 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "HEADER ERROR\n"); | |
| 427 | ✗ | return AVERROR_INVALIDDATA; | |
| 428 | } | ||
| 429 | |||
| 430 |
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892 | if (h->c.mb_x >= h->c.mb_width || |
| 431 |
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892 | h->c.mb_y >= h->c.mb_height) { |
| 432 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "POS ERROR %d %d\n", h->c.mb_x, h->c.mb_y); | |
| 433 | ✗ | return AVERROR_INVALIDDATA; | |
| 434 | } | ||
| 435 | 892 | mb_pos = h->c.mb_y * h->c.mb_width + h->c.mb_x; | |
| 436 | 892 | left = h->c.mb_width * h->c.mb_height - mb_pos; | |
| 437 |
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892 | if (mb_count > left) { |
| 438 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "COUNT ERROR\n"); | |
| 439 | ✗ | return AVERROR_INVALIDDATA; | |
| 440 | } | ||
| 441 | |||
| 442 |
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892 | if (whole_size < h->c.mb_width * h->c.mb_height / 8) |
| 443 | ✗ | return AVERROR_INVALIDDATA; | |
| 444 | |||
| 445 |
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892 | if ((h->c.mb_x == 0 && h->c.mb_y == 0) || !h->c.cur_pic.ptr) { |
| 446 | // FIXME write parser so we always have complete frames? | ||
| 447 |
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445 | if (h->c.cur_pic.ptr) { |
| 448 | ✗ | ff_er_frame_end(&h->c.er, NULL); | |
| 449 | ✗ | ff_mpv_frame_end(&h->c); | |
| 450 | ✗ | h->c.mb_x = h->c.mb_y = h->c.resync_mb_x = h->c.resync_mb_y = 0; | |
| 451 | } | ||
| 452 |
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445 | if ((ret = ff_mpv_frame_start(&h->c, avctx)) < 0) |
| 453 | ✗ | return ret; | |
| 454 | 445 | ff_mpv_er_frame_start_ext(&h->c, 0, h->c.pp_time, h->c.pb_time); | |
| 455 | } else { | ||
| 456 |
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447 | if (h->c.cur_pic.ptr->f->pict_type != h->c.pict_type) { |
| 457 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "Slice type mismatch\n"); | |
| 458 | ✗ | return AVERROR_INVALIDDATA; | |
| 459 | } | ||
| 460 | } | ||
| 461 | |||
| 462 | |||
| 463 | ff_dlog(avctx, "qscale=%d\n", h->c.qscale); | ||
| 464 | |||
| 465 | /* default quantization values */ | ||
| 466 |
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892 | if (h->c.codec_id == AV_CODEC_ID_RV10) { |
| 467 |
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150 | if (h->c.mb_y == 0) |
| 468 | 150 | h->c.first_slice_line = 1; | |
| 469 | } else { | ||
| 470 | 742 | h->c.first_slice_line = 1; | |
| 471 | 742 | h->c.resync_mb_x = h->c.mb_x; | |
| 472 | } | ||
| 473 | 892 | start_mb_x = h->c.mb_x; | |
| 474 | 892 | h->c.resync_mb_y = h->c.mb_y; | |
| 475 | |||
| 476 | 892 | ff_set_qscale(&h->c, h->c.qscale); | |
| 477 | |||
| 478 | 892 | h->rv10_first_dc_coded[0] = 0; | |
| 479 | 892 | h->rv10_first_dc_coded[1] = 0; | |
| 480 | 892 | h->rv10_first_dc_coded[2] = 0; | |
| 481 | 892 | ff_init_block_index(&h->c); | |
| 482 | |||
| 483 | /* decode each macroblock */ | ||
| 484 |
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162300 | for (h->mb_num_left = mb_count; h->mb_num_left > 0; h->mb_num_left--) { |
| 485 | int ret; | ||
| 486 | 162300 | ff_update_block_index(&h->c, 8, h->c.avctx->lowres, 1); | |
| 487 | ff_tlog(avctx, "**mb x=%d y=%d\n", h->c.mb_x, h->c.mb_y); | ||
| 488 | |||
| 489 | 162300 | h->c.mv_dir = MV_DIR_FORWARD; | |
| 490 | 162300 | h->c.mv_type = MV_TYPE_16X16; | |
| 491 | 162300 | ret = ff_h263_decode_mb(h); | |
| 492 | |||
| 493 | // Repeat the slice end check from ff_h263_decode_mb with our active | ||
| 494 | // bitstream size | ||
| 495 |
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162300 | if (ret != SLICE_ERROR && active_bits_size >= get_bits_count(&h->gb)) { |
| 496 | 162300 | int v = show_bits(&h->gb, 16); | |
| 497 | |||
| 498 |
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162300 | if (get_bits_count(&h->gb) + 16 > active_bits_size) |
| 499 | 1341 | v >>= get_bits_count(&h->gb) + 16 - active_bits_size; | |
| 500 | |||
| 501 |
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162300 | if (!v) |
| 502 | 892 | ret = SLICE_END; | |
| 503 | } | ||
| 504 |
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162300 | if (ret != SLICE_ERROR && active_bits_size < get_bits_count(&h->gb) && |
| 505 | ✗ | 8 * buf_size2 >= get_bits_count(&h->gb)) { | |
| 506 | ✗ | active_bits_size = buf_size2 * 8; | |
| 507 | ✗ | av_log(avctx, AV_LOG_DEBUG, "update size from %d to %d\n", | |
| 508 | 8 * buf_size, active_bits_size); | ||
| 509 | ✗ | ret = SLICE_OK; | |
| 510 | } | ||
| 511 | |||
| 512 |
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162300 | if (ret == SLICE_ERROR || active_bits_size < get_bits_count(&h->gb)) { |
| 513 | ✗ | av_log(h->c.avctx, AV_LOG_ERROR, "ERROR at MB %d %d\n", h->c.mb_x, | |
| 514 | h->c.mb_y); | ||
| 515 | ✗ | return AVERROR_INVALIDDATA; | |
| 516 | } | ||
| 517 |
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162300 | if (h->c.pict_type != AV_PICTURE_TYPE_B) |
| 518 | 140700 | ff_h263_update_motion_val(&h->c); | |
| 519 | 162300 | ff_mpv_reconstruct_mb(&h->c, h->block); | |
| 520 |
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162300 | if (h->loop_filter) |
| 521 | 59400 | ff_h263_loop_filter(&h->c); | |
| 522 | |||
| 523 |
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162300 | if (++h->c.mb_x == h->c.mb_width) { |
| 524 | 7575 | h->c.mb_x = 0; | |
| 525 | 7575 | h->c.mb_y++; | |
| 526 | 7575 | ff_init_block_index(&h->c); | |
| 527 | } | ||
| 528 |
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162300 | if (h->c.mb_x == h->c.resync_mb_x) |
| 529 | 7297 | h->c.first_slice_line = 0; | |
| 530 |
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162300 | if (ret == SLICE_END) |
| 531 | 892 | break; | |
| 532 | } | ||
| 533 | |||
| 534 | 892 | ff_er_add_slice(&h->c.er, start_mb_x, h->c.resync_mb_y, h->c.mb_x - 1, h->c.mb_y, | |
| 535 | ER_MB_END); | ||
| 536 | |||
| 537 | 892 | return active_bits_size; | |
| 538 | } | ||
| 539 | |||
| 540 | 1667 | static int get_slice_offset(AVCodecContext *avctx, const uint8_t *buf, int n) | |
| 541 | { | ||
| 542 | 1667 | return AV_RL32(buf + n * 8); | |
| 543 | } | ||
| 544 | |||
| 545 | 449 | static int rv10_decode_frame(AVCodecContext *avctx, AVFrame *pict, | |
| 546 | int *got_frame, AVPacket *avpkt) | ||
| 547 | { | ||
| 548 | 449 | const uint8_t *buf = avpkt->data; | |
| 549 | 449 | int buf_size = avpkt->size; | |
| 550 | 449 | MpegEncContext *s = avctx->priv_data; | |
| 551 | int i, ret; | ||
| 552 | int slice_count; | ||
| 553 | 449 | const uint8_t *slices_hdr = NULL; | |
| 554 | |||
| 555 | ff_dlog(avctx, "*****frame %"PRId64" size=%d\n", avctx->frame_num, buf_size); | ||
| 556 | |||
| 557 | /* no supplementary picture */ | ||
| 558 |
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449 | if (buf_size == 0) { |
| 559 | 4 | return 0; | |
| 560 | } | ||
| 561 | |||
| 562 | 445 | slice_count = (*buf++) + 1; | |
| 563 | 445 | buf_size--; | |
| 564 | |||
| 565 |
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445 | if (!slice_count || buf_size <= 8 * slice_count) { |
| 566 | ✗ | av_log(avctx, AV_LOG_ERROR, "Invalid slice count: %d.\n", | |
| 567 | slice_count); | ||
| 568 | ✗ | return AVERROR_INVALIDDATA; | |
| 569 | } | ||
| 570 | |||
| 571 | 445 | slices_hdr = buf + 4; | |
| 572 | 445 | buf += 8 * slice_count; | |
| 573 | 445 | buf_size -= 8 * slice_count; | |
| 574 | |||
| 575 |
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1337 | for (i = 0; i < slice_count; i++) { |
| 576 | 892 | unsigned offset = get_slice_offset(avctx, slices_hdr, i); | |
| 577 | int size, size2; | ||
| 578 | |||
| 579 |
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892 | if (offset >= buf_size) |
| 580 | ✗ | return AVERROR_INVALIDDATA; | |
| 581 | |||
| 582 |
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892 | if (i + 1 == slice_count) |
| 583 | 445 | size = buf_size - offset; | |
| 584 | else | ||
| 585 | 447 | size = get_slice_offset(avctx, slices_hdr, i + 1) - offset; | |
| 586 | |||
| 587 |
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892 | if (i + 2 >= slice_count) |
| 588 | 564 | size2 = buf_size - offset; | |
| 589 | else | ||
| 590 | 328 | size2 = get_slice_offset(avctx, slices_hdr, i + 2) - offset; | |
| 591 | |||
| 592 |
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892 | if (size <= 0 || size2 <= 0 || |
| 593 |
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892 | offset + FFMAX(size, size2) > buf_size) |
| 594 | ✗ | return AVERROR_INVALIDDATA; | |
| 595 | |||
| 596 |
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892 | if ((ret = rv10_decode_packet(avctx, buf + offset, size, size2, buf_size)) < 0) |
| 597 | ✗ | return ret; | |
| 598 | |||
| 599 |
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892 | if (ret > 8 * size) |
| 600 | ✗ | i++; | |
| 601 | } | ||
| 602 | |||
| 603 |
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445 | if (s->cur_pic.ptr && s->mb_y >= s->mb_height) { |
| 604 | 445 | ff_er_frame_end(&s->er, NULL); | |
| 605 | 445 | ff_mpv_frame_end(s); | |
| 606 | |||
| 607 |
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445 | if (s->pict_type == AV_PICTURE_TYPE_B || s->low_delay) { |
| 608 |
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372 | if ((ret = av_frame_ref(pict, s->cur_pic.ptr->f)) < 0) |
| 609 | ✗ | return ret; | |
| 610 | 372 | ff_print_debug_info(s, s->cur_pic.ptr, pict); | |
| 611 | 372 | ff_mpv_export_qp_table(s, pict, s->cur_pic.ptr, FF_MPV_QSCALE_TYPE_MPEG1); | |
| 612 |
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73 | } else if (s->last_pic.ptr) { |
| 613 |
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72 | if ((ret = av_frame_ref(pict, s->last_pic.ptr->f)) < 0) |
| 614 | ✗ | return ret; | |
| 615 | 72 | ff_print_debug_info(s, s->last_pic.ptr, pict); | |
| 616 | 72 | ff_mpv_export_qp_table(s, pict,s->last_pic.ptr, FF_MPV_QSCALE_TYPE_MPEG1); | |
| 617 | } | ||
| 618 | |||
| 619 |
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445 | if (s->last_pic.ptr || s->low_delay) { |
| 620 | 444 | *got_frame = 1; | |
| 621 | } | ||
| 622 | |||
| 623 | // so we can detect if frame_end was not called (find some nicer solution...) | ||
| 624 | 445 | ff_mpv_unref_picture(&s->cur_pic); | |
| 625 | } | ||
| 626 | |||
| 627 | 445 | return avpkt->size; | |
| 628 | } | ||
| 629 | |||
| 630 | const FFCodec ff_rv10_decoder = { | ||
| 631 | .p.name = "rv10", | ||
| 632 | CODEC_LONG_NAME("RealVideo 1.0"), | ||
| 633 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 634 | .p.id = AV_CODEC_ID_RV10, | ||
| 635 | .priv_data_size = sizeof(RVDecContext), | ||
| 636 | .init = rv10_decode_init, | ||
| 637 | FF_CODEC_DECODE_CB(rv10_decode_frame), | ||
| 638 | .close = ff_mpv_decode_close, | ||
| 639 | .p.capabilities = AV_CODEC_CAP_DR1, | ||
| 640 | .p.max_lowres = 3, | ||
| 641 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
| 642 | }; | ||
| 643 | |||
| 644 | const FFCodec ff_rv20_decoder = { | ||
| 645 | .p.name = "rv20", | ||
| 646 | CODEC_LONG_NAME("RealVideo 2.0"), | ||
| 647 | .p.type = AVMEDIA_TYPE_VIDEO, | ||
| 648 | .p.id = AV_CODEC_ID_RV20, | ||
| 649 | .priv_data_size = sizeof(RVDecContext), | ||
| 650 | .init = rv10_decode_init, | ||
| 651 | FF_CODEC_DECODE_CB(rv10_decode_frame), | ||
| 652 | .close = ff_mpv_decode_close, | ||
| 653 | .p.capabilities = AV_CODEC_CAP_DR1 | AV_CODEC_CAP_DELAY, | ||
| 654 | .flush = ff_mpeg_flush, | ||
| 655 | .p.max_lowres = 3, | ||
| 656 | .caps_internal = FF_CODEC_CAP_INIT_CLEANUP, | ||
| 657 | }; | ||
| 658 |