1 /******************************************************************************
2 *
3 * Copyright (C) 2019 The Android Open Source Project
4 *
5 * Licensed under the Apache License, Version 2.0 (the "License");
6 * you may not use this file except in compliance with the License.
7 * You may obtain a copy of the License at:
8 *
9 * http://www.apache.org/licenses/LICENSE-2.0
10 *
11 * Unless required by applicable law or agreed to in writing, software
12 * distributed under the License is distributed on an "AS IS" BASIS,
13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14 * See the License for the specific language governing permissions and
15 * limitations under the License.
16 *
17 *****************************************************************************
18 * Originally developed and contributed by Ittiam Systems Pvt. Ltd, Bangalore
19 */
20
21 #include <stddef.h>
22 #include <stdint.h>
23 #include <stdio.h>
24 #include <stdlib.h>
25 #include <string.h>
26
27 #include <algorithm>
28 #include <memory>
29
30 #include "ihevc_typedefs.h"
31 #include "ihevcd_cxa.h"
32 #include "iv.h"
33 #include "ivd.h"
34
35 #define NELEMENTS(x) (sizeof(x) / sizeof(x[0]))
36 #define ivd_api_function ihevcd_cxa_api_function
37 const IV_COLOR_FORMAT_T supportedColorFormats[] = {
38 IV_YUV_420P, IV_YUV_420SP_UV, IV_YUV_420SP_VU,
39 IV_YUV_422ILE, IV_RGB_565, IV_RGBA_8888};
40
41 /* Decoder ignores invalid arch, i.e. for arm build, if SSSE3 is requested,
42 * decoder defaults to a supported configuration. So same set of supported
43 * architectures can be used in arm/arm64/x86 builds */
44 const IVD_ARCH_T supportedArchitectures[] = {
45 ARCH_ARM_NONEON, ARCH_ARM_A9Q, ARCH_ARM_NEONINTR, ARCH_ARMV8_GENERIC,
46 ARCH_X86_GENERIC, ARCH_X86_SSSE3, ARCH_X86_SSE42};
47
48 enum {
49 OFFSET_COLOR_FORMAT = 6,
50 OFFSET_NUM_CORES,
51 OFFSET_ARCH,
52 /* Should be the last entry */
53 OFFSET_MAX,
54 };
55
56 const static int kMaxNumDecodeCalls = 100;
57 const static int kSupportedColorFormats = NELEMENTS(supportedColorFormats);
58 const static int kSupportedArchitectures = NELEMENTS(supportedArchitectures);
59 const static int kMaxCores = 4;
iv_aligned_malloc(void * ctxt,WORD32 alignment,WORD32 size)60 void *iv_aligned_malloc(void *ctxt, WORD32 alignment, WORD32 size) {
61 void *buf = NULL;
62 (void)ctxt;
63 if (0 != posix_memalign(&buf, alignment, size)) {
64 return NULL;
65 }
66 return buf;
67 }
68
iv_aligned_free(void * ctxt,void * buf)69 void iv_aligned_free(void *ctxt, void *buf) {
70 (void)ctxt;
71 free(buf);
72 }
73
74 class Codec {
75 public:
76 Codec(IV_COLOR_FORMAT_T colorFormat, size_t numCores);
77 ~Codec();
78
79 void createCodec();
80 void deleteCodec();
81 void resetCodec();
82 void setCores();
83 void allocFrame();
84 void freeFrame();
85 void decodeHeader(const uint8_t *data, size_t size);
86 IV_API_CALL_STATUS_T decodeFrame(const uint8_t *data, size_t size,
87 size_t *bytesConsumed);
88 void setParams(IVD_VIDEO_DECODE_MODE_T mode);
89 void setArchitecture(IVD_ARCH_T arch);
90
91 private:
92 IV_COLOR_FORMAT_T mColorFormat;
93 size_t mNumCores;
94 iv_obj_t *mCodec;
95 ivd_out_bufdesc_t mOutBufHandle;
96 uint32_t mWidth;
97 uint32_t mHeight;
98 };
99
Codec(IV_COLOR_FORMAT_T colorFormat,size_t numCores)100 Codec::Codec(IV_COLOR_FORMAT_T colorFormat, size_t numCores) {
101 mColorFormat = colorFormat;
102 mNumCores = numCores;
103 mCodec = nullptr;
104 mWidth = 0;
105 mHeight = 0;
106
107 memset(&mOutBufHandle, 0, sizeof(mOutBufHandle));
108 }
109
~Codec()110 Codec::~Codec() {}
111
createCodec()112 void Codec::createCodec() {
113 IV_API_CALL_STATUS_T ret;
114 ihevcd_cxa_create_ip_t create_ip;
115 ihevcd_cxa_create_op_t create_op;
116 void *fxns = (void *)&ivd_api_function;
117
118 create_ip.s_ivd_create_ip_t.e_cmd = IVD_CMD_CREATE;
119 create_ip.s_ivd_create_ip_t.u4_share_disp_buf = 0;
120 create_ip.s_ivd_create_ip_t.e_output_format = mColorFormat;
121 create_ip.s_ivd_create_ip_t.pf_aligned_alloc = iv_aligned_malloc;
122 create_ip.s_ivd_create_ip_t.pf_aligned_free = iv_aligned_free;
123 create_ip.s_ivd_create_ip_t.pv_mem_ctxt = NULL;
124 create_ip.s_ivd_create_ip_t.u4_size = sizeof(ihevcd_cxa_create_ip_t);
125 create_op.s_ivd_create_op_t.u4_size = sizeof(ihevcd_cxa_create_op_t);
126
127 ret = ivd_api_function(NULL, (void *)&create_ip, (void *)&create_op);
128 if (ret != IV_SUCCESS) {
129 return;
130 }
131 mCodec = (iv_obj_t *)create_op.s_ivd_create_op_t.pv_handle;
132 mCodec->pv_fxns = fxns;
133 mCodec->u4_size = sizeof(iv_obj_t);
134 }
135
deleteCodec()136 void Codec::deleteCodec() {
137 ivd_delete_ip_t delete_ip;
138 ivd_delete_op_t delete_op;
139
140 delete_ip.e_cmd = IVD_CMD_DELETE;
141 delete_ip.u4_size = sizeof(ivd_delete_ip_t);
142 delete_op.u4_size = sizeof(ivd_delete_op_t);
143
144 ivd_api_function(mCodec, (void *)&delete_ip, (void *)&delete_op);
145 }
146
resetCodec()147 void Codec::resetCodec() {
148 ivd_ctl_reset_ip_t s_ctl_ip;
149 ivd_ctl_reset_op_t s_ctl_op;
150
151 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
152 s_ctl_ip.e_sub_cmd = IVD_CMD_CTL_RESET;
153 s_ctl_ip.u4_size = sizeof(ivd_ctl_reset_ip_t);
154 s_ctl_op.u4_size = sizeof(ivd_ctl_reset_op_t);
155
156 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
157 }
158
setCores()159 void Codec::setCores() {
160 ihevcd_cxa_ctl_set_num_cores_ip_t s_ctl_ip;
161 ihevcd_cxa_ctl_set_num_cores_op_t s_ctl_op;
162
163 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
164 s_ctl_ip.e_sub_cmd =
165 (IVD_CONTROL_API_COMMAND_TYPE_T)IHEVCD_CXA_CMD_CTL_SET_NUM_CORES;
166 s_ctl_ip.u4_num_cores = mNumCores;
167 s_ctl_ip.u4_size = sizeof(ihevcd_cxa_ctl_set_num_cores_ip_t);
168 s_ctl_op.u4_size = sizeof(ihevcd_cxa_ctl_set_num_cores_op_t);
169
170 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
171 }
172
setParams(IVD_VIDEO_DECODE_MODE_T mode)173 void Codec::setParams(IVD_VIDEO_DECODE_MODE_T mode) {
174 ivd_ctl_set_config_ip_t s_ctl_ip;
175 ivd_ctl_set_config_op_t s_ctl_op;
176
177 s_ctl_ip.u4_disp_wd = 0;
178 s_ctl_ip.e_frm_skip_mode = IVD_SKIP_NONE;
179 s_ctl_ip.e_frm_out_mode = IVD_DISPLAY_FRAME_OUT;
180 s_ctl_ip.e_vid_dec_mode = mode;
181 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
182 s_ctl_ip.e_sub_cmd = IVD_CMD_CTL_SETPARAMS;
183 s_ctl_ip.u4_size = sizeof(ivd_ctl_set_config_ip_t);
184 s_ctl_op.u4_size = sizeof(ivd_ctl_set_config_op_t);
185
186 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
187 }
188
setArchitecture(IVD_ARCH_T arch)189 void Codec::setArchitecture(IVD_ARCH_T arch) {
190 ihevcd_cxa_ctl_set_processor_ip_t s_ctl_ip;
191 ihevcd_cxa_ctl_set_processor_op_t s_ctl_op;
192
193 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
194 s_ctl_ip.e_sub_cmd =
195 (IVD_CONTROL_API_COMMAND_TYPE_T)IHEVCD_CXA_CMD_CTL_SET_PROCESSOR;
196 s_ctl_ip.u4_arch = arch;
197 s_ctl_ip.u4_soc = SOC_GENERIC;
198 s_ctl_ip.u4_size = sizeof(ihevcd_cxa_ctl_set_processor_ip_t);
199 s_ctl_op.u4_size = sizeof(ihevcd_cxa_ctl_set_processor_op_t);
200
201 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
202 }
freeFrame()203 void Codec::freeFrame() {
204 for (int i = 0; i < mOutBufHandle.u4_num_bufs; i++) {
205 if (mOutBufHandle.pu1_bufs[i]) {
206 free(mOutBufHandle.pu1_bufs[i]);
207 mOutBufHandle.pu1_bufs[i] = nullptr;
208 }
209 }
210 }
211
allocFrame()212 void Codec::allocFrame() {
213 size_t sizes[4] = {0};
214 size_t num_bufs = 0;
215
216 freeFrame();
217
218 memset(&mOutBufHandle, 0, sizeof(mOutBufHandle));
219
220 switch (mColorFormat) {
221 case IV_YUV_420SP_UV:
222 [[fallthrough]];
223 case IV_YUV_420SP_VU:
224 sizes[0] = mWidth * mHeight;
225 sizes[1] = mWidth * mHeight >> 1;
226 num_bufs = 2;
227 break;
228 case IV_YUV_422ILE:
229 sizes[0] = mWidth * mHeight * 2;
230 num_bufs = 1;
231 break;
232 case IV_RGB_565:
233 sizes[0] = mWidth * mHeight * 2;
234 num_bufs = 1;
235 break;
236 case IV_RGBA_8888:
237 sizes[0] = mWidth * mHeight * 4;
238 num_bufs = 1;
239 break;
240 case IV_YUV_420P:
241 [[fallthrough]];
242 default:
243 sizes[0] = mWidth * mHeight;
244 sizes[1] = mWidth * mHeight >> 2;
245 sizes[2] = mWidth * mHeight >> 2;
246 num_bufs = 3;
247 break;
248 }
249 mOutBufHandle.u4_num_bufs = num_bufs;
250 for (int i = 0; i < num_bufs; i++) {
251 mOutBufHandle.u4_min_out_buf_size[i] = sizes[i];
252 mOutBufHandle.pu1_bufs[i] = (UWORD8 *)iv_aligned_malloc(NULL, 16, sizes[i]);
253 }
254 }
255
decodeHeader(const uint8_t * data,size_t size)256 void Codec::decodeHeader(const uint8_t *data, size_t size) {
257 setParams(IVD_DECODE_HEADER);
258
259 while (size > 0) {
260 IV_API_CALL_STATUS_T ret;
261 ivd_video_decode_ip_t dec_ip;
262 ivd_video_decode_op_t dec_op;
263 size_t bytes_consumed;
264
265 memset(&dec_ip, 0, sizeof(dec_ip));
266 memset(&dec_op, 0, sizeof(dec_op));
267
268 dec_ip.e_cmd = IVD_CMD_VIDEO_DECODE;
269 dec_ip.u4_ts = 0;
270 dec_ip.pv_stream_buffer = (void *)data;
271 dec_ip.u4_num_Bytes = size;
272 dec_ip.u4_size = sizeof(ivd_video_decode_ip_t);
273 dec_op.u4_size = sizeof(ivd_video_decode_op_t);
274
275 ret = ivd_api_function(mCodec, (void *)&dec_ip, (void *)&dec_op);
276
277 bytes_consumed = dec_op.u4_num_bytes_consumed;
278 /* If no bytes are consumed, then consume 4 bytes to ensure fuzzer proceeds
279 * to feed next data */
280 if (!bytes_consumed) bytes_consumed = 4;
281
282 bytes_consumed = std::min(size, bytes_consumed);
283
284 data += bytes_consumed;
285 size -= bytes_consumed;
286
287 mWidth = std::min(dec_op.u4_pic_wd, (UWORD32)10240);
288 mHeight = std::min(dec_op.u4_pic_ht, (UWORD32)10240);
289
290 /* Break after successful header decode */
291 if (mWidth && mHeight) {
292 break;
293 }
294 }
295 /* if width / height are invalid, set them to defaults */
296 if (!mWidth) mWidth = 1920;
297 if (!mHeight) mHeight = 1088;
298 }
299
decodeFrame(const uint8_t * data,size_t size,size_t * bytesConsumed)300 IV_API_CALL_STATUS_T Codec::decodeFrame(const uint8_t *data, size_t size,
301 size_t *bytesConsumed) {
302 IV_API_CALL_STATUS_T ret;
303 ivd_video_decode_ip_t dec_ip;
304 ivd_video_decode_op_t dec_op;
305
306 memset(&dec_ip, 0, sizeof(dec_ip));
307 memset(&dec_op, 0, sizeof(dec_op));
308
309 dec_ip.e_cmd = IVD_CMD_VIDEO_DECODE;
310 dec_ip.u4_ts = 0;
311 dec_ip.pv_stream_buffer = (void *)data;
312 dec_ip.u4_num_Bytes = size;
313 dec_ip.u4_size = sizeof(ivd_video_decode_ip_t);
314 dec_ip.s_out_buffer = mOutBufHandle;
315
316 dec_op.u4_size = sizeof(ivd_video_decode_op_t);
317
318 ret = ivd_api_function(mCodec, (void *)&dec_ip, (void *)&dec_op);
319
320 /* In case of change in resolution, reset codec and feed the same data again
321 */
322 if (IVD_RES_CHANGED == (dec_op.u4_error_code & 0xFF)) {
323 resetCodec();
324 ret = ivd_api_function(mCodec, (void *)&dec_ip, (void *)&dec_op);
325 }
326 *bytesConsumed = dec_op.u4_num_bytes_consumed;
327
328 /* If no bytes are consumed, then consume 4 bytes to ensure fuzzer proceeds
329 * to feed next data */
330 if (!*bytesConsumed) *bytesConsumed = 4;
331
332 if (dec_op.u4_pic_wd && dec_op.u4_pic_ht &&
333 (mWidth != dec_op.u4_pic_wd || mHeight != dec_op.u4_pic_ht)) {
334 mWidth = std::min(dec_op.u4_pic_wd, (UWORD32)10240);
335 mHeight = std::min(dec_op.u4_pic_ht, (UWORD32)10240);
336 allocFrame();
337 }
338
339 return ret;
340 }
341
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)342 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
343 if (size < 1) {
344 return 0;
345 }
346 size_t colorFormatOfst = std::min((size_t)OFFSET_COLOR_FORMAT, size - 1);
347 size_t numCoresOfst = std::min((size_t)OFFSET_NUM_CORES, size - 1);
348 size_t architectureOfst = std::min((size_t)OFFSET_ARCH, size - 1);
349 size_t architectureIdx = data[architectureOfst] % kSupportedArchitectures;
350 IVD_ARCH_T arch = (IVD_ARCH_T)supportedArchitectures[architectureIdx];
351 size_t colorFormatIdx = data[colorFormatOfst] % kSupportedColorFormats;
352 IV_COLOR_FORMAT_T colorFormat =
353 (IV_COLOR_FORMAT_T)(supportedColorFormats[colorFormatIdx]);
354 uint32_t numCores = (data[numCoresOfst] % kMaxCores) + 1;
355 size_t numDecodeCalls = 0;
356 Codec *codec = new Codec(colorFormat, numCores);
357 codec->createCodec();
358 codec->setArchitecture(arch);
359 codec->setCores();
360 codec->decodeHeader(data, size);
361 codec->setParams(IVD_DECODE_FRAME);
362 codec->allocFrame();
363
364 while (size > 0 && numDecodeCalls < kMaxNumDecodeCalls) {
365 IV_API_CALL_STATUS_T ret;
366 size_t bytesConsumed;
367 ret = codec->decodeFrame(data, size, &bytesConsumed);
368
369 bytesConsumed = std::min(size, bytesConsumed);
370 data += bytesConsumed;
371 size -= bytesConsumed;
372 numDecodeCalls++;
373 }
374
375 codec->freeFrame();
376 codec->deleteCodec();
377 delete codec;
378 return 0;
379 }
380