diff options
Diffstat (limited to 'libavcodec/dnxhddata.h')
| -rw-r--r-- | libavcodec/dnxhddata.h | 64 |
1 files changed, 56 insertions, 8 deletions
diff --git a/libavcodec/dnxhddata.h b/libavcodec/dnxhddata.h index cc877b6504..89262a13c1 100644 --- a/libavcodec/dnxhddata.h +++ b/libavcodec/dnxhddata.h @@ -2,20 +2,20 @@ * VC3/DNxHD decoder. * Copyright (c) 2007 SmartJog S.A., Baptiste Coudurier <baptiste dot coudurier at smartjog dot com> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * FFmpeg is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * - * Libav is distributed in the hope that it will be useful, + * FFmpeg is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public - * License along with Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -24,29 +24,77 @@ #include <stdint.h> #include "avcodec.h" +#include "libavutil/internal.h" +#include "libavutil/intreadwrite.h" + +/** Additional profile info flags */ +#define DNXHD_INTERLACED (1<<0) +#define DNXHD_MBAFF (1<<1) +#define DNXHD_444 (1<<2) + +/** Frame headers, extra 0x00 added to end for parser */ +#define DNXHD_HEADER_INITIAL 0x000002800100 +#define DNXHD_HEADER_444 0x000002800200 + +/** Indicate that a CIDEntry value must be read in the bitstream */ +#define DNXHD_VARIABLE 0 typedef struct CIDEntry { int cid; unsigned int width, height; - int interlaced; unsigned int frame_size; unsigned int coding_unit_size; + uint16_t flags; int index_bits; int bit_depth; + int eob_index; const uint8_t *luma_weight, *chroma_weight; const uint8_t *dc_codes, *dc_bits; const uint16_t *ac_codes; - const uint8_t *ac_bits, *ac_level; - const uint8_t *ac_run_flag, *ac_index_flag; + const uint8_t *ac_bits, *ac_info; const uint16_t *run_codes; const uint8_t *run_bits, *run; int bit_rates[5]; ///< Helper to choose variants, rounded to nearest 5Mb/s + AVRational frame_rates[5]; + AVRational packet_scale; } CIDEntry; extern const CIDEntry ff_dnxhd_cid_table[]; int ff_dnxhd_get_cid_table(int cid); int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth); -void ff_dnxhd_list_cid(AVCodecContext *avctx); +void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel); + +static av_always_inline uint64_t ff_dnxhd_check_header_prefix_hr(uint64_t prefix) +{ + uint64_t data_offset = prefix >> 16; + if ((prefix & 0xFFFF0000FFFFLL) == 0x0300 && + data_offset >= 0x0280 && data_offset <= 0x2170 && + (data_offset & 3) == 0) + return prefix; + return 0; +} + +static av_always_inline uint64_t ff_dnxhd_check_header_prefix(uint64_t prefix) +{ + if (prefix == DNXHD_HEADER_INITIAL || + prefix == DNXHD_HEADER_444 || + ff_dnxhd_check_header_prefix_hr(prefix)) + return prefix; + return 0; +} + +static av_always_inline uint64_t ff_dnxhd_parse_header_prefix(const uint8_t *buf) +{ + uint64_t prefix = AV_RB32(buf); + prefix = (prefix << 16) | buf[4] << 8; + return ff_dnxhd_check_header_prefix(prefix); +} +int avpriv_dnxhd_get_frame_size(int cid); +int avpriv_dnxhd_get_interlaced(int cid); +#if LIBAVCODEC_VERSION_MAJOR < 58 +attribute_deprecated +uint64_t avpriv_dnxhd_parse_header_prefix(const uint8_t *buf); +#endif #endif /* AVCODEC_DNXHDDATA_H */ |