You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
239 lines
5.9 KiB
239 lines
5.9 KiB
3 years ago
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
//
|
||
|
/// \file filter_decoder.c
|
||
|
/// \brief Filter ID mapping to filter-specific functions
|
||
|
//
|
||
|
// Author: Lasse Collin
|
||
|
//
|
||
|
// This file has been put into the public domain.
|
||
|
// You can do whatever you want with this file.
|
||
|
//
|
||
|
///////////////////////////////////////////////////////////////////////////////
|
||
|
|
||
|
#include "filter_encoder.h"
|
||
|
#include "lzma_encoder.h"
|
||
|
#ifdef HAVE_DECODER_LZMA2
|
||
|
#include "lzma2_encoder.h"
|
||
|
#endif
|
||
|
#if defined(HAVE_DECODER_X86) || \
|
||
|
defined(HAVE_DECODER_POWERPC) || \
|
||
|
defined(HAVE_DECODER_IA64) || \
|
||
|
defined(HAVE_DECODER_ARM) || \
|
||
|
defined(HAVE_DECODER_ARMTHUMB) || \
|
||
|
defined(HAVE_DECODER_SPARC)
|
||
|
#include "simple_encoder.h"
|
||
|
#endif
|
||
|
#ifdef HAVE_DECODER_DELTA
|
||
|
#include "delta_encoder.h"
|
||
|
#endif
|
||
|
|
||
|
|
||
|
typedef struct {
|
||
|
/// Filter ID
|
||
|
lzma_vli id;
|
||
|
|
||
|
/// Initializes the filter encoder and calls lzma_next_filter_init()
|
||
|
/// for filters + 1.
|
||
|
lzma_init_function init;
|
||
|
|
||
|
/// Calculates memory usage of the encoder. If the options are
|
||
|
/// invalid, UINT64_MAX is returned.
|
||
|
uint64_t (*memusage)(const void *options);
|
||
|
|
||
|
/// Calculates the recommended Uncompressed Size for .xz Blocks to
|
||
|
/// which the input data can be split to make multithreaded
|
||
|
/// encoding possible. If this is NULL, it is assumed that
|
||
|
/// the encoder is fast enough with single thread.
|
||
|
uint64_t (*block_size)(const void *options);
|
||
|
|
||
|
/// Tells the size of the Filter Properties field. If options are
|
||
|
/// invalid, UINT32_MAX is returned. If this is NULL, props_size_fixed
|
||
|
/// is used.
|
||
|
lzma_ret (*props_size_get)(uint32_t *size, const void *options);
|
||
|
uint32_t props_size_fixed;
|
||
|
|
||
|
/// Encodes Filter Properties.
|
||
|
///
|
||
|
/// \return - LZMA_OK: Properties encoded successfully.
|
||
|
/// - LZMA_OPTIONS_ERROR: Unsupported options
|
||
|
/// - LZMA_PROG_ERROR: Invalid options or not enough
|
||
|
/// output space
|
||
|
lzma_ret (*props_encode)(const void *options, uint8_t *out);
|
||
|
|
||
|
} lzma_filter_encoder;
|
||
|
|
||
|
|
||
|
static const lzma_filter_encoder encoders[] = {
|
||
|
#ifdef HAVE_ENCODER_LZMA1
|
||
|
{
|
||
|
.id = LZMA_FILTER_LZMA1,
|
||
|
.init = &lzma_lzma_encoder_init,
|
||
|
.memusage = &lzma_lzma_encoder_memusage,
|
||
|
.block_size = NULL, // FIXME
|
||
|
.props_size_get = NULL,
|
||
|
.props_size_fixed = 5,
|
||
|
.props_encode = &lzma_lzma_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_LZMA2
|
||
|
{
|
||
|
.id = LZMA_FILTER_LZMA2,
|
||
|
.init = &lzma_lzma2_encoder_init,
|
||
|
.memusage = &lzma_lzma2_encoder_memusage,
|
||
|
.block_size = &lzma_lzma2_block_size, // FIXME
|
||
|
.props_size_get = NULL,
|
||
|
.props_size_fixed = 1,
|
||
|
.props_encode = &lzma_lzma2_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_X86
|
||
|
{
|
||
|
.id = LZMA_FILTER_X86,
|
||
|
.init = &lzma_simple_x86_encoder_init,
|
||
|
.memusage = NULL,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = &lzma_simple_props_size,
|
||
|
.props_encode = &lzma_simple_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_POWERPC
|
||
|
{
|
||
|
.id = LZMA_FILTER_POWERPC,
|
||
|
.init = &lzma_simple_powerpc_encoder_init,
|
||
|
.memusage = NULL,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = &lzma_simple_props_size,
|
||
|
.props_encode = &lzma_simple_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_IA64
|
||
|
{
|
||
|
.id = LZMA_FILTER_IA64,
|
||
|
.init = &lzma_simple_ia64_encoder_init,
|
||
|
.memusage = NULL,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = &lzma_simple_props_size,
|
||
|
.props_encode = &lzma_simple_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_ARM
|
||
|
{
|
||
|
.id = LZMA_FILTER_ARM,
|
||
|
.init = &lzma_simple_arm_encoder_init,
|
||
|
.memusage = NULL,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = &lzma_simple_props_size,
|
||
|
.props_encode = &lzma_simple_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_ARMTHUMB
|
||
|
{
|
||
|
.id = LZMA_FILTER_ARMTHUMB,
|
||
|
.init = &lzma_simple_armthumb_encoder_init,
|
||
|
.memusage = NULL,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = &lzma_simple_props_size,
|
||
|
.props_encode = &lzma_simple_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_SPARC
|
||
|
{
|
||
|
.id = LZMA_FILTER_SPARC,
|
||
|
.init = &lzma_simple_sparc_encoder_init,
|
||
|
.memusage = NULL,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = &lzma_simple_props_size,
|
||
|
.props_encode = &lzma_simple_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
#ifdef HAVE_ENCODER_DELTA
|
||
|
{
|
||
|
.id = LZMA_FILTER_DELTA,
|
||
|
.init = &lzma_delta_encoder_init,
|
||
|
.memusage = &lzma_delta_coder_memusage,
|
||
|
.block_size = NULL,
|
||
|
.props_size_get = NULL,
|
||
|
.props_size_fixed = 1,
|
||
|
.props_encode = &lzma_delta_props_encode,
|
||
|
},
|
||
|
#endif
|
||
|
};
|
||
|
|
||
|
|
||
|
static const lzma_filter_encoder *
|
||
|
encoder_find(lzma_vli id)
|
||
|
{
|
||
|
for (size_t i = 0; i < ARRAY_SIZE(encoders); ++i)
|
||
|
if (encoders[i].id == id)
|
||
|
return encoders + i;
|
||
|
|
||
|
return NULL;
|
||
|
}
|
||
|
|
||
|
|
||
|
extern LZMA_API(lzma_bool)
|
||
|
lzma_filter_encoder_is_supported(lzma_vli id)
|
||
|
{
|
||
|
return encoder_find(id) != NULL;
|
||
|
}
|
||
|
|
||
|
|
||
|
extern uint64_t
|
||
|
lzma_mt_block_size(const lzma_filter *filters)
|
||
|
{
|
||
|
uint64_t max = 0;
|
||
|
|
||
|
for (size_t i = 0; filters[i].id != LZMA_VLI_UNKNOWN; ++i) {
|
||
|
const lzma_filter_encoder *const fe
|
||
|
= encoder_find(filters[i].id);
|
||
|
if (fe->block_size != NULL) {
|
||
|
const uint64_t size
|
||
|
= fe->block_size(filters[i].options);
|
||
|
if (size == 0)
|
||
|
return 0;
|
||
|
|
||
|
if (size > max)
|
||
|
max = size;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
return max;
|
||
|
}
|
||
|
|
||
|
|
||
|
extern LZMA_API(lzma_ret)
|
||
|
lzma_properties_size(uint32_t *size, const lzma_filter *filter)
|
||
|
{
|
||
|
const lzma_filter_encoder *const fe = encoder_find(filter->id);
|
||
|
if (fe == NULL) {
|
||
|
// Unknown filter - if the Filter ID is a proper VLI,
|
||
|
// return LZMA_OPTIONS_ERROR instead of LZMA_PROG_ERROR,
|
||
|
// because it's possible that we just don't have support
|
||
|
// compiled in for the requested filter.
|
||
|
return filter->id <= LZMA_VLI_MAX
|
||
|
? LZMA_OPTIONS_ERROR : LZMA_PROG_ERROR;
|
||
|
}
|
||
|
|
||
|
if (fe->props_size_get == NULL) {
|
||
|
// No props_size_get() function, use props_size_fixed.
|
||
|
*size = fe->props_size_fixed;
|
||
|
return LZMA_OK;
|
||
|
}
|
||
|
|
||
|
return fe->props_size_get(size, filter->options);
|
||
|
}
|
||
|
|
||
|
|
||
|
extern LZMA_API(lzma_ret)
|
||
|
lzma_properties_encode(const lzma_filter *filter, uint8_t *props)
|
||
|
{
|
||
|
const lzma_filter_encoder *const fe = encoder_find(filter->id);
|
||
|
if (fe == NULL)
|
||
|
return LZMA_PROG_ERROR;
|
||
|
|
||
|
if (fe->props_encode == NULL)
|
||
|
return LZMA_OK;
|
||
|
|
||
|
return fe->props_encode(filter->options, props);
|
||
|
}
|