projects / libav.git / blame
| Commit | Line | Data |
|---|---|---|
| 18f1706f MT |
1 | /* |
| 2 | * This file is part of Libav. | |
| 3 | * | |
| 4 | * Libav is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU Lesser General Public | |
| 6 | * License as published by the Free Software Foundation; either | |
| 7 | * version 2.1 of the License, or (at your option) any later version. | |
| 8 | * | |
| 9 | * Libav is distributed in the hope that it will be useful, | |
| 10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 12 | * Lesser General Public License for more details. | |
| 13 | * | |
| 14 | * You should have received a copy of the GNU Lesser General Public | |
| 15 | * License along with Libav; if not, write to the Free Software | |
| 16 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA | |
| 17 | */ | |
| 18 | ||
| 19 | #ifndef AVCODEC_CBS_INTERNAL_H | |
| 20 | #define AVCODEC_CBS_INTERNAL_H | |
| 21 | ||
| 22 | #include "avcodec.h" | |
| 23 | #include "bitstream.h" | |
| 24 | #include "cbs.h" | |
| 25 | #include "put_bits.h" | |
| 26 | ||
| 27 | ||
| 28 | typedef struct CodedBitstreamType { | |
| 29 | enum AVCodecID codec_id; | |
| 30 | ||
| 31 | size_t priv_data_size; | |
| 32 | ||
| 33 | // Split frag->data into coded bitstream units, creating the | |
| 34 | // frag->units array. Fill data but not content on each unit. | |
| 35 | int (*split_fragment)(CodedBitstreamContext *ctx, | |
| 36 | CodedBitstreamFragment *frag, | |
| 37 | int header); | |
| 38 | ||
| 39 | // Read the unit->data bitstream and decompose it, creating | |
| 40 | // unit->content. | |
| 41 | int (*read_unit)(CodedBitstreamContext *ctx, | |
| 42 | CodedBitstreamUnit *unit); | |
| 43 | ||
| 44 | // Write the unit->data bitstream from unit->content. | |
| 45 | int (*write_unit)(CodedBitstreamContext *ctx, | |
| 46 | CodedBitstreamUnit *unit); | |
| 47 | ||
| 48 | // Read the data from all of frag->units and assemble it into | |
| 49 | // a bitstream for the whole fragment. | |
| 50 | int (*assemble_fragment)(CodedBitstreamContext *ctx, | |
| 51 | CodedBitstreamFragment *frag); | |
| 52 | ||
| 53 | // Free the content and data of a single unit. | |
| 54 | void (*free_unit)(CodedBitstreamUnit *unit); | |
| 55 | ||
| 56 | // Free the codec internal state. | |
| 57 | void (*close)(CodedBitstreamContext *ctx); | |
| 58 | } CodedBitstreamType; | |
| 59 | ||
| 60 | ||
| 61 | // Helper functions for trace output. | |
| 62 | ||
| 63 | void ff_cbs_trace_header(CodedBitstreamContext *ctx, | |
| 64 | const char *name); | |
| 65 | ||
| 66 | void ff_cbs_trace_syntax_element(CodedBitstreamContext *ctx, | |
| 67 | int position, const char *name, | |
| 68 | const char *bitstring, int64_t value); | |
| 69 | ||
| 70 | ||
| 71 | // Helper functions for read/write of common bitstream elements, including | |
| 72 | // generation of trace output. | |
| 73 | ||
| 74 | int ff_cbs_read_unsigned(CodedBitstreamContext *ctx, BitstreamContext *bc, | |
| 75 | int width, const char *name, uint32_t *write_to, | |
| 76 | uint32_t range_min, uint32_t range_max); | |
| 77 | ||
| 78 | int ff_cbs_write_unsigned(CodedBitstreamContext *ctx, PutBitContext *pbc, | |
| 79 | int width, const char *name, uint32_t value, | |
| 80 | uint32_t range_min, uint32_t range_max); | |
| 81 | ||
| 82 | ||
| acf06f45 | 83 | extern const CodedBitstreamType ff_cbs_type_h264; |
| 867381b8 | 84 | extern const CodedBitstreamType ff_cbs_type_h265; |
| acf06f45 MT |
85 | |
| 86 | ||
| 18f1706f | 87 | #endif /* AVCODEC_CBS_INTERNAL_H */ |