FFmpeg
libavcodec
hap.h
Go to the documentation of this file.
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/*
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* Vidvox Hap
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* Copyright (C) 2015 Vittorio Giovara <vittorio.giovara@gmail.com>
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* Copyright (C) 2015 Tom Butterworth <bangnoise@gmail.com>
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef AVCODEC_HAP_H
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#define AVCODEC_HAP_H
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#include <stddef.h>
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#include <stdint.h>
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#include "
bytestream.h
"
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#include "
texturedsp.h
"
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enum
HapTextureFormat
{
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HAP_FMT_RGBDXT1
= 0x0B,
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HAP_FMT_RGBADXT5
= 0x0E,
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HAP_FMT_YCOCGDXT5
= 0x0F,
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HAP_FMT_RGTC1
= 0x01,
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};
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enum
HapCompressor
{
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HAP_COMP_NONE
= 0xA0,
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HAP_COMP_SNAPPY
= 0xB0,
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HAP_COMP_COMPLEX
= 0xC0,
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};
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enum
HapSectionType
{
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HAP_ST_DECODE_INSTRUCTIONS
= 0x01,
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HAP_ST_COMPRESSOR_TABLE
= 0x02,
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HAP_ST_SIZE_TABLE
= 0x03,
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HAP_ST_OFFSET_TABLE
= 0x04,
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};
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typedef
struct
HapChunk
{
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enum
HapCompressor
compressor
;
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uint32_t
compressed_offset
;
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size_t
compressed_size
;
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int
uncompressed_offset
;
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size_t
uncompressed_size
;
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}
HapChunk
;
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typedef
struct
HapContext
{
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const
struct
AVClass
*
class
;
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GetByteContext
gbc
;
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enum
HapTextureFormat
opt_tex_fmt
;
/* Texture type (encoder only) */
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int
opt_chunk_count
;
/* User-requested chunk count (encoder only) */
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int
opt_compressor
;
/* User-requested compressor (encoder only) */
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int
chunk_count
;
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HapChunk
*
chunks
;
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int
*
chunk_results
;
/* Results from threaded operations */
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uint8_t *
tex_buf
;
/* Buffer for compressed texture */
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size_t
tex_size
;
/* Size of the compressed texture */
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size_t
max_snappy
;
/* Maximum compressed size for snappy buffer */
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int
texture_count
;
/* 2 for HAQA, 1 for other version */
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int
texture_section_size
;
/* size of the part of the texture section (for HAPQA) */
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TextureDSPThreadContext
enc
;
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TextureDSPThreadContext
dec
[2];
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}
HapContext
;
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/*
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* Set the number of chunks in the frame. Returns 0 on success or an error if:
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* - first_in_frame is 0 and the number of chunks has changed
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* - any other error occurs
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*/
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int
ff_hap_set_chunk_count
(
HapContext
*
ctx
,
int
count,
int
first_in_frame);
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/*
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* Free resources associated with the context
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*/
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av_cold
void
ff_hap_free_context
(
HapContext
*
ctx
);
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/* The first three bytes are the size of the section past the header, or zero
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* if the length is stored in the next long word. The fourth byte in the first
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* long word indicates the type of the current section. */
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int
ff_hap_parse_section_header
(
GetByteContext
*gbc,
int
*section_size,
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enum
HapSectionType
*section_type);
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#endif
/* AVCODEC_HAP_H */
HAP_FMT_YCOCGDXT5
@ HAP_FMT_YCOCGDXT5
Definition:
hap.h:35
HapContext::opt_compressor
int opt_compressor
Definition:
hap.h:67
GetByteContext
Definition:
bytestream.h:33
ff_hap_parse_section_header
int ff_hap_parse_section_header(GetByteContext *gbc, int *section_size, enum HapSectionType *section_type)
Definition:
hap.c:58
HapChunk::compressed_size
size_t compressed_size
Definition:
hap.h:55
HapContext::tex_buf
uint8_t * tex_buf
Definition:
hap.h:73
HapContext::chunks
HapChunk * chunks
Definition:
hap.h:70
HapContext::enc
TextureDSPThreadContext enc
Definition:
hap.h:81
HapContext
Definition:
hap.h:60
texturedsp.h
HAP_FMT_RGBADXT5
@ HAP_FMT_RGBADXT5
Definition:
hap.h:34
HAP_COMP_SNAPPY
@ HAP_COMP_SNAPPY
Definition:
hap.h:41
TextureDSPThreadContext
Definition:
texturedsp.h:69
HAP_FMT_RGTC1
@ HAP_FMT_RGTC1
Definition:
hap.h:36
ff_hap_free_context
av_cold void ff_hap_free_context(HapContext *ctx)
Definition:
hap.c:51
HAP_COMP_NONE
@ HAP_COMP_NONE
Definition:
hap.h:40
av_cold
#define av_cold
Definition:
attributes.h:90
HapContext::max_snappy
size_t max_snappy
Definition:
hap.h:76
HapContext::opt_chunk_count
int opt_chunk_count
Definition:
hap.h:66
HAP_ST_SIZE_TABLE
@ HAP_ST_SIZE_TABLE
Definition:
hap.h:48
ctx
AVFormatContext * ctx
Definition:
movenc.c:49
AVClass
Describe the class of an AVClass context structure.
Definition:
log.h:66
HapContext::chunk_count
int chunk_count
Definition:
hap.h:69
HAP_ST_DECODE_INSTRUCTIONS
@ HAP_ST_DECODE_INSTRUCTIONS
Definition:
hap.h:46
HAP_COMP_COMPLEX
@ HAP_COMP_COMPLEX
Definition:
hap.h:42
HapChunk::uncompressed_size
size_t uncompressed_size
Definition:
hap.h:57
HapContext::gbc
GetByteContext gbc
Definition:
hap.h:63
HapSectionType
HapSectionType
Definition:
hap.h:45
HapChunk::compressor
enum HapCompressor compressor
Definition:
hap.h:53
HapCompressor
HapCompressor
Definition:
hap.h:39
HapTextureFormat
HapTextureFormat
Definition:
hap.h:32
HAP_ST_COMPRESSOR_TABLE
@ HAP_ST_COMPRESSOR_TABLE
Definition:
hap.h:47
HapChunk
Definition:
hap.h:52
HapChunk::uncompressed_offset
int uncompressed_offset
Definition:
hap.h:56
HapContext::texture_count
int texture_count
Definition:
hap.h:78
HapContext::dec
TextureDSPThreadContext dec[2]
Definition:
hap.h:82
HAP_ST_OFFSET_TABLE
@ HAP_ST_OFFSET_TABLE
Definition:
hap.h:49
HAP_FMT_RGBDXT1
@ HAP_FMT_RGBDXT1
Definition:
hap.h:33
HapContext::tex_size
size_t tex_size
Definition:
hap.h:74
HapChunk::compressed_offset
uint32_t compressed_offset
Definition:
hap.h:54
bytestream.h
HapContext::opt_tex_fmt
enum HapTextureFormat opt_tex_fmt
Definition:
hap.h:65
ff_hap_set_chunk_count
int ff_hap_set_chunk_count(HapContext *ctx, int count, int first_in_frame)
Definition:
hap.c:29
HapContext::texture_section_size
int texture_section_size
Definition:
hap.h:79
HapContext::chunk_results
int * chunk_results
Definition:
hap.h:71
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