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1 | #define PERL_NO_GET_CONTEXT | |
2 | #include "EXTERN.h" | |
3 | #include "perl.h" | |
4 | #include "XSUB.h" | |
5 | ||
6 | #include "ppport.h" | |
7 | ||
8 | #include <brotli/decode.h> | |
9 | #include <brotli/encode.h> | |
10 | ||
11 | #define BUFFER_SIZE 1048576 | |
12 | ||
13 | typedef struct brotli_decoder { | |
14 | BrotliDecoderState *decoder; | |
15 | }* IO__Uncompress__Brotli; | |
16 | ||
17 | typedef struct brotli_encoder { | |
18 | BrotliEncoderState *encoder; | |
19 | }* IO__Compress__Brotli; | |
20 | ||
21 | ||
22 | MODULE = IO::Compress::Brotli PACKAGE = IO::Uncompress::Brotli | |
23 | PROTOTYPES: ENABLE | |
24 | ||
25 | SV* | |
26 | unbro_given_size(buffer, decoded_size) | |
27 | SV* buffer | |
28 | size_t decoded_size | |
29 | PREINIT: | |
30 | STRLEN encoded_size; | |
31 | uint8_t *encoded_buffer, *decoded_buffer; | |
32 | CODE: | |
33 | encoded_buffer = (uint8_t*) SvPV(buffer, encoded_size); | |
34 | Newx(decoded_buffer, decoded_size, uint8_t); | |
35 | if(!BrotliDecoderDecompress(encoded_size, encoded_buffer, &decoded_size, decoded_buffer)){ | |
36 | croak("Error in BrotliDecoderDecompress"); | |
37 | } | |
38 | RETVAL = newSV(0); | |
39 | sv_usepvn(RETVAL, decoded_buffer, decoded_size); | |
40 | OUTPUT: | |
41 | RETVAL | |
42 | ||
43 | IO::Uncompress::Brotli | |
44 | create(class) | |
45 | SV* class | |
46 | CODE: | |
47 | Newx(RETVAL, 1, struct brotli_decoder); | |
48 | RETVAL->decoder = BrotliDecoderCreateInstance(NULL, NULL, NULL); | |
49 | OUTPUT: | |
50 | RETVAL | |
51 | ||
52 | void | |
53 | DESTROY(self) | |
54 | IO::Uncompress::Brotli self | |
55 | CODE: | |
56 | BrotliDecoderDestroyInstance(self->decoder); | |
57 | Safefree(self); | |
58 | ||
59 | SV* | |
60 | decompress(self, in) | |
61 | IO::Uncompress::Brotli self | |
62 | SV* in | |
63 | PREINIT: | |
64 | uint8_t *next_in, *next_out, *buffer; | |
65 | size_t available_in, available_out; | |
66 | BrotliDecoderResult result; | |
67 | CODE: | |
68 | next_in = (uint8_t*) SvPV(in, available_in); | |
69 | Newx(buffer, BUFFER_SIZE, uint8_t); | |
70 | RETVAL = newSVpv("", 0); | |
71 | result = BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT; | |
72 | while(result == BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT) { | |
73 | next_out = buffer; | |
74 | available_out=BUFFER_SIZE; | |
75 | result = BrotliDecoderDecompressStream( self->decoder, | |
76 | &available_in, | |
77 | (const uint8_t**) &next_in, | |
78 | &available_out, | |
79 | &next_out, | |
80 | NULL ); | |
81 | if(!result){ | |
82 | Safefree(buffer); | |
83 | croak("Error in BrotliDecoderDecompressStream"); | |
84 | } | |
85 | sv_catpvn(RETVAL, (const char*)buffer, BUFFER_SIZE-available_out); | |
86 | } | |
87 | Safefree(buffer); | |
88 | OUTPUT: | |
89 | RETVAL | |
90 | ||
91 | ||
92 | MODULE = IO::Compress::Brotli PACKAGE = IO::Compress::Brotli | |
93 | PROTOTYPES: ENABLE | |
94 | ||
95 | SV* | |
96 | bro(buffer, quality=BROTLI_DEFAULT_QUALITY, lgwin=BROTLI_DEFAULT_WINDOW) | |
97 | SV* buffer | |
98 | U32 quality | |
99 | U32 lgwin | |
100 | PREINIT: | |
101 | size_t encoded_size; | |
102 | STRLEN decoded_size; | |
103 | uint8_t *encoded_buffer, *decoded_buffer; | |
104 | BROTLI_BOOL result; | |
105 | CODE: | |
106 | if( quality < BROTLI_MIN_QUALITY || quality > BROTLI_MAX_QUALITY ) { | |
107 | croak("Invalid quality value"); | |
108 | } | |
109 | if( lgwin < BROTLI_MIN_WINDOW_BITS || lgwin > BROTLI_MAX_WINDOW_BITS ) { | |
110 | croak("Invalid window value"); | |
111 | } | |
112 | decoded_buffer = (uint8_t*) SvPV(buffer, decoded_size); | |
113 | encoded_size = BrotliEncoderMaxCompressedSize(decoded_size); | |
114 | if(!encoded_size){ | |
115 | croak("Compressed size overflow"); | |
116 | } | |
117 | Newx(encoded_buffer, encoded_size+1, uint8_t); | |
118 | result = BrotliEncoderCompress( quality, | |
119 | lgwin, | |
120 | BROTLI_DEFAULT_MODE, | |
121 | decoded_size, | |
122 | decoded_buffer, | |
123 | &encoded_size, | |
124 | encoded_buffer ); | |
125 | if(!result){ | |
126 | Safefree(buffer); | |
127 | croak("Error in BrotliEncoderCompress"); | |
128 | } | |
129 | encoded_buffer[encoded_size]=0; | |
130 | RETVAL = newSV(0); | |
131 | sv_usepvn_flags(RETVAL, encoded_buffer, encoded_size, SV_SMAGIC | SV_HAS_TRAILING_NUL); | |
132 | OUTPUT: | |
133 | RETVAL | |
134 | ||
135 | IO::Compress::Brotli | |
136 | create(class) | |
137 | SV* class | |
138 | CODE: | |
139 | Newx(RETVAL, 1, struct brotli_encoder); | |
140 | RETVAL->encoder = BrotliEncoderCreateInstance(NULL, NULL, NULL); | |
141 | OUTPUT: | |
142 | RETVAL | |
143 | ||
144 | bool BrotliEncoderSetParameter(self, value) | |
145 | IO::Compress::Brotli self | |
146 | U32 value | |
147 | ALIAS: | |
148 | window = 1 | |
149 | quality = 2 | |
150 | _mode = 3 | |
151 | PREINIT: | |
152 | BrotliEncoderParameter param; | |
153 | INIT: | |
154 | switch(ix){ | |
155 | case 0: | |
156 | croak("BrotliEncoderSetParameter may not be called directly"); | |
157 | break; | |
158 | case 1: | |
159 | if( value < BROTLI_MIN_WINDOW_BITS || value > BROTLI_MAX_WINDOW_BITS ) { | |
160 | croak("Invalid window value"); | |
161 | } | |
162 | param = BROTLI_PARAM_LGWIN; | |
163 | break; | |
164 | case 2: | |
165 | if( value < BROTLI_MIN_QUALITY || value > BROTLI_MAX_QUALITY ) { | |
166 | croak("Invalid quality value"); | |
167 | } | |
168 | param = BROTLI_PARAM_QUALITY; | |
169 | break; | |
170 | case 3: | |
171 | /* Validation done on Perl side */ | |
172 | param = BROTLI_PARAM_MODE; | |
173 | break; | |
174 | default: | |
175 | croak("Impossible ix in BrotliEncoderSetParameter"); | |
176 | break; | |
177 | } | |
178 | C_ARGS: | |
179 | self->encoder, param, value | |
180 | ||
181 | SV* | |
182 | _compress(self, in = &PL_sv_undef) | |
183 | IO::Compress::Brotli self | |
184 | SV* in | |
185 | ALIAS: | |
186 | compress = 1 | |
187 | flush = 2 | |
188 | finish = 3 | |
189 | PREINIT: | |
190 | uint8_t *next_in, *next_out, *buffer; | |
191 | size_t available_in, available_out; | |
192 | BROTLI_BOOL result; | |
193 | BrotliEncoderOperation op; | |
194 | CODE: | |
195 | switch(ix) { | |
196 | case 0: | |
197 | croak("_compress may not be called directly"); | |
198 | break; | |
199 | case 1: | |
200 | op = BROTLI_OPERATION_PROCESS; | |
201 | break; | |
202 | case 2: | |
203 | op = BROTLI_OPERATION_FLUSH; | |
204 | break; | |
205 | case 3: | |
206 | op = BROTLI_OPERATION_FINISH; | |
207 | break; | |
208 | default: | |
209 | croak("Impossible ix in _compress"); | |
210 | break; | |
211 | } | |
212 | ||
213 | Newx(buffer, BUFFER_SIZE, uint8_t); | |
214 | if(in == &PL_sv_undef) | |
215 | next_in = (uint8_t*) buffer, available_in = 0; | |
216 | else | |
217 | next_in = (uint8_t*) SvPV(in, available_in); | |
218 | RETVAL = newSVpv("", 0); | |
219 | while(1) { | |
220 | next_out = buffer; | |
221 | available_out = BUFFER_SIZE; | |
222 | result = BrotliEncoderCompressStream( self->encoder, | |
223 | (BrotliEncoderOperation) op, | |
224 | &available_in, | |
225 | (const uint8_t**) &next_in, | |
226 | &available_out, | |
227 | &next_out, | |
228 | NULL ); | |
229 | if(!result) { | |
230 | Safefree(buffer); | |
231 | croak("Error in BrotliEncoderCompressStream"); | |
232 | } | |
233 | ||
234 | if( available_out != BUFFER_SIZE ) { | |
235 | sv_catpvn(RETVAL, (const char*)buffer, BUFFER_SIZE-available_out); | |
236 | } | |
237 | ||
238 | if( | |
239 | BrotliEncoderIsFinished(self->encoder) || | |
240 | (!available_in && !BrotliEncoderHasMoreOutput(self->encoder)) | |
241 | ) break; | |
242 | } | |
243 | Safefree(buffer); | |
244 | OUTPUT: | |
245 | RETVAL | |
246 | ||
247 | void | |
248 | DESTROY(self) | |
249 | IO::Compress::Brotli self | |
250 | CODE: | |
251 | BrotliEncoderDestroyInstance(self->encoder); | |
252 | Safefree(self); |