| Line | Branch | Exec | Source |
|---|---|---|---|
| 1 | /* | ||
| 2 | * DV encoder/decoder shared code | ||
| 3 | * Copyright (c) 2002 Fabrice Bellard | ||
| 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 | #ifndef AVCODEC_DV_INTERNAL_H | ||
| 23 | #define AVCODEC_DV_INTERNAL_H | ||
| 24 | |||
| 25 | #include <stdint.h> | ||
| 26 | |||
| 27 | #include "dv.h" | ||
| 28 | #include "dv_profile.h" | ||
| 29 | |||
| 30 | typedef struct DVwork_chunk { | ||
| 31 | uint16_t buf_offset; | ||
| 32 | uint16_t mb_coordinates[5]; | ||
| 33 | } DVwork_chunk; | ||
| 34 | |||
| 35 | void ff_dv_init_dynamic_tables(DVwork_chunk *work_chunks, const AVDVProfile *d); | ||
| 36 | |||
| 37 | 2074 | static inline int dv_work_pool_size(const AVDVProfile *d) | |
| 38 | { | ||
| 39 | 2074 | int size = d->n_difchan * d->difseg_size * 27; | |
| 40 |
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2074 | if (DV_PROFILE_IS_1080i50(d)) |
| 41 | 455 | size -= 3 * 27; | |
| 42 |
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2074 | if (DV_PROFILE_IS_720p50(d)) |
| 43 | 405 | size -= 4 * 27; | |
| 44 | 2074 | return size; | |
| 45 | } | ||
| 46 | |||
| 47 | 6382665 | static inline void dv_calculate_mb_xy(const AVDVProfile *sys, | |
| 48 | const uint8_t *buf, | ||
| 49 | const DVwork_chunk *work_chunk, | ||
| 50 | int m, int *mb_x, int *mb_y) | ||
| 51 | { | ||
| 52 | 6382665 | *mb_x = work_chunk->mb_coordinates[m] & 0xff; | |
| 53 | 6382665 | *mb_y = work_chunk->mb_coordinates[m] >> 8; | |
| 54 | |||
| 55 | /* We work with 720p frames split in half. | ||
| 56 | * The odd half-frame (chan == 2,3) is displaced :-( */ | ||
| 57 |
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6382665 | if (sys->height == 720 && !(buf[1] & 0x0C)) |
| 58 | /* shifting the Y coordinate down by 72/2 macro blocks */ | ||
| 59 |
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540000 | *mb_y -= (*mb_y > 17) ? 18 : -72; |
| 60 | 6382665 | } | |
| 61 | |||
| 62 | #endif // AVCODEC_DV_INTERNAL_H | ||
| 63 |