3 * Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com>
4 * Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com>
6 * This file is part of FFmpeg.
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.
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.
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
28 #include "libavutil/opt.h"
30 #include "bytestream.h"
31 #include "texturedsp.h"
33 enum HapTextureFormat {
34 HAP_FMT_RGBDXT1 = 0x0B,
35 HAP_FMT_RGBADXT5 = 0x0E,
36 HAP_FMT_YCOCGDXT5 = 0x0F,
42 HAP_COMP_SNAPPY = 0xB0,
43 HAP_COMP_COMPLEX = 0xC0,
47 HAP_ST_DECODE_INSTRUCTIONS = 0x01,
48 HAP_ST_COMPRESSOR_TABLE = 0x02,
49 HAP_ST_SIZE_TABLE = 0x03,
50 HAP_ST_OFFSET_TABLE = 0x04,
53 typedef struct HapChunk {
54 enum HapCompressor compressor;
55 int compressed_offset;
56 size_t compressed_size;
57 int uncompressed_offset;
58 size_t uncompressed_size;
61 typedef struct HapContext {
64 TextureDSPContext dxtc;
67 enum HapTextureFormat opt_tex_fmt; /* Texture type (encoder only) */
68 int opt_chunk_count; /* User-requested chunk count (encoder only) */
69 int opt_compressor; /* User-requested compressor (encoder only) */
73 int *chunk_results; /* Results from threaded operations */
75 int tex_rat; /* Compression ratio */
76 const uint8_t *tex_data; /* Compressed texture */
77 uint8_t *tex_buf; /* Buffer for compressed texture */
78 size_t tex_size; /* Size of the compressed texture */
80 size_t max_snappy; /* Maximum compressed size for snappy buffer */
82 int slice_count; /* Number of slices for threaded operations */
84 /* Pointer to the selected compress or decompress function */
85 int (*tex_fun)(uint8_t *dst, ptrdiff_t stride, const uint8_t *block);
89 * Set the number of chunks in the frame. Returns 0 on success or an error if:
90 * - first_in_frame is 0 and the number of chunks has changed
91 * - any other error occurs
93 int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame);
96 * Free resources associated with the context
98 av_cold void ff_hap_free_context(HapContext *ctx);
100 #endif /* AVCODEC_HAP_H */