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 "ih264_typedefs.h"
31 #include "ih264d.h"
32 #include "iv.h"
33 #include "ivd.h"
34
35 #define NELEMENTS(x) (sizeof(x) / sizeof(x[0]))
36 #define ivd_api_function ih264d_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 }
~Codec()109 Codec::~Codec() {}
createCodec()110 void Codec::createCodec() {
111 IV_API_CALL_STATUS_T ret;
112 ih264d_create_ip_t create_ip{};
113 ih264d_create_op_t create_op{};
114 void *fxns = (void *)&ivd_api_function;
115
116 create_ip.s_ivd_create_ip_t.e_cmd = IVD_CMD_CREATE;
117 create_ip.s_ivd_create_ip_t.u4_share_disp_buf = 0;
118 create_ip.s_ivd_create_ip_t.e_output_format = mColorFormat;
119 create_ip.s_ivd_create_ip_t.pf_aligned_alloc = iv_aligned_malloc;
120 create_ip.s_ivd_create_ip_t.pf_aligned_free = iv_aligned_free;
121 create_ip.u4_keep_threads_active = 1;
122 create_ip.s_ivd_create_ip_t.pv_mem_ctxt = NULL;
123 create_ip.s_ivd_create_ip_t.u4_size = sizeof(ih264d_create_ip_t);
124 create_op.s_ivd_create_op_t.u4_size = sizeof(ih264d_create_op_t);
125
126 ret = ivd_api_function(NULL, (void *)&create_ip, (void *)&create_op);
127 if (ret != IV_SUCCESS) {
128 return;
129 }
130 mCodec = (iv_obj_t *)create_op.s_ivd_create_op_t.pv_handle;
131 mCodec->pv_fxns = fxns;
132 mCodec->u4_size = sizeof(iv_obj_t);
133 }
134
deleteCodec()135 void Codec::deleteCodec() {
136 ivd_delete_ip_t delete_ip{};
137 ivd_delete_op_t delete_op{};
138
139 delete_ip.e_cmd = IVD_CMD_DELETE;
140 delete_ip.u4_size = sizeof(ivd_delete_ip_t);
141 delete_op.u4_size = sizeof(ivd_delete_op_t);
142
143 ivd_api_function(mCodec, (void *)&delete_ip, (void *)&delete_op);
144 }
resetCodec()145 void Codec::resetCodec() {
146 ivd_ctl_reset_ip_t s_ctl_ip{};
147 ivd_ctl_reset_op_t s_ctl_op{};
148
149 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
150 s_ctl_ip.e_sub_cmd = IVD_CMD_CTL_RESET;
151 s_ctl_ip.u4_size = sizeof(ivd_ctl_reset_ip_t);
152 s_ctl_op.u4_size = sizeof(ivd_ctl_reset_op_t);
153
154 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
155 }
156
setCores()157 void Codec::setCores() {
158 ih264d_ctl_set_num_cores_ip_t s_ctl_ip{};
159 ih264d_ctl_set_num_cores_op_t s_ctl_op{};
160
161 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
162 s_ctl_ip.e_sub_cmd =
163 (IVD_CONTROL_API_COMMAND_TYPE_T)IH264D_CMD_CTL_SET_NUM_CORES;
164 s_ctl_ip.u4_num_cores = mNumCores;
165 s_ctl_ip.u4_size = sizeof(ih264d_ctl_set_num_cores_ip_t);
166 s_ctl_op.u4_size = sizeof(ih264d_ctl_set_num_cores_op_t);
167
168 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
169 }
170
setParams(IVD_VIDEO_DECODE_MODE_T mode)171 void Codec::setParams(IVD_VIDEO_DECODE_MODE_T mode) {
172 ivd_ctl_set_config_ip_t s_ctl_ip{};
173 ivd_ctl_set_config_op_t s_ctl_op{};
174
175 s_ctl_ip.u4_disp_wd = 0;
176 s_ctl_ip.e_frm_skip_mode = IVD_SKIP_NONE;
177 s_ctl_ip.e_frm_out_mode = IVD_DISPLAY_FRAME_OUT;
178 s_ctl_ip.e_vid_dec_mode = mode;
179 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
180 s_ctl_ip.e_sub_cmd = IVD_CMD_CTL_SETPARAMS;
181 s_ctl_ip.u4_size = sizeof(ivd_ctl_set_config_ip_t);
182 s_ctl_op.u4_size = sizeof(ivd_ctl_set_config_op_t);
183
184 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
185 }
186
setArchitecture(IVD_ARCH_T arch)187 void Codec::setArchitecture(IVD_ARCH_T arch) {
188 ih264d_ctl_set_processor_ip_t s_ctl_ip{};
189 ih264d_ctl_set_processor_op_t s_ctl_op{};
190
191 s_ctl_ip.e_cmd = IVD_CMD_VIDEO_CTL;
192 s_ctl_ip.e_sub_cmd =
193 (IVD_CONTROL_API_COMMAND_TYPE_T)IH264D_CMD_CTL_SET_PROCESSOR;
194 s_ctl_ip.u4_arch = arch;
195 s_ctl_ip.u4_soc = SOC_GENERIC;
196 s_ctl_ip.u4_size = sizeof(ih264d_ctl_set_processor_ip_t);
197 s_ctl_op.u4_size = sizeof(ih264d_ctl_set_processor_op_t);
198
199 ivd_api_function(mCodec, (void *)&s_ctl_ip, (void *)&s_ctl_op);
200 }
freeFrame()201 void Codec::freeFrame() {
202 for (int i = 0; i < mOutBufHandle.u4_num_bufs; i++) {
203 if (mOutBufHandle.pu1_bufs[i]) {
204 free(mOutBufHandle.pu1_bufs[i]);
205 mOutBufHandle.pu1_bufs[i] = nullptr;
206 }
207 }
208 }
allocFrame()209 void Codec::allocFrame() {
210 size_t sizes[4] = {0};
211 size_t num_bufs = 0;
212
213 freeFrame();
214
215 memset(&mOutBufHandle, 0, sizeof(mOutBufHandle));
216
217 switch (mColorFormat) {
218 case IV_YUV_420SP_UV:
219 [[fallthrough]];
220 case IV_YUV_420SP_VU:
221 sizes[0] = mWidth * mHeight;
222 sizes[1] = mWidth * mHeight >> 1;
223 num_bufs = 2;
224 break;
225 case IV_YUV_422ILE:
226 sizes[0] = mWidth * mHeight * 2;
227 num_bufs = 1;
228 break;
229 case IV_RGB_565:
230 sizes[0] = mWidth * mHeight * 2;
231 num_bufs = 1;
232 break;
233 case IV_RGBA_8888:
234 sizes[0] = mWidth * mHeight * 4;
235 num_bufs = 1;
236 break;
237 case IV_YUV_420P:
238 [[fallthrough]];
239 default:
240 sizes[0] = mWidth * mHeight;
241 sizes[1] = mWidth * mHeight >> 2;
242 sizes[2] = mWidth * mHeight >> 2;
243 num_bufs = 3;
244 break;
245 }
246 mOutBufHandle.u4_num_bufs = num_bufs;
247 for (int i = 0; i < num_bufs; i++) {
248 mOutBufHandle.u4_min_out_buf_size[i] = sizes[i];
249 mOutBufHandle.pu1_bufs[i] = (UWORD8 *)iv_aligned_malloc(NULL, 16, sizes[i]);
250 }
251 }
decodeHeader(const uint8_t * data,size_t size)252 void Codec::decodeHeader(const uint8_t *data, size_t size) {
253 setParams(IVD_DECODE_HEADER);
254
255 size_t numDecodeCalls = 0;
256
257 while (size > 0 && numDecodeCalls < kMaxNumDecodeCalls) {
258 IV_API_CALL_STATUS_T ret;
259 ivd_video_decode_ip_t dec_ip{};
260 ivd_video_decode_op_t dec_op{};
261 size_t bytes_consumed;
262
263 dec_ip.e_cmd = IVD_CMD_VIDEO_DECODE;
264 dec_ip.u4_ts = 0;
265 dec_ip.pv_stream_buffer = (void *)data;
266 dec_ip.u4_num_Bytes = size;
267 dec_ip.u4_size = sizeof(ivd_video_decode_ip_t);
268 dec_op.u4_size = sizeof(ivd_video_decode_op_t);
269
270 ret = ivd_api_function(mCodec, (void *)&dec_ip, (void *)&dec_op);
271
272 bytes_consumed = dec_op.u4_num_bytes_consumed;
273 /* If no bytes are consumed, then consume 4 bytes to ensure fuzzer proceeds
274 * to feed next data */
275 if (!bytes_consumed) bytes_consumed = 4;
276
277 bytes_consumed = std::min(size, bytes_consumed);
278
279 data += bytes_consumed;
280 size -= bytes_consumed;
281 numDecodeCalls++;
282
283 mWidth = std::min(dec_op.u4_pic_wd, (UWORD32)10240);
284 mHeight = std::min(dec_op.u4_pic_ht, (UWORD32)10240);
285
286 /* Break after successful header decode */
287 if (mWidth && mHeight) {
288 break;
289 }
290 }
291 /* if width / height are invalid, set them to defaults */
292 if (!mWidth) mWidth = 1920;
293 if (!mHeight) mHeight = 1088;
294 }
295
decodeFrame(const uint8_t * data,size_t size,size_t * bytesConsumed)296 IV_API_CALL_STATUS_T Codec::decodeFrame(const uint8_t *data, size_t size,
297 size_t *bytesConsumed) {
298 IV_API_CALL_STATUS_T ret;
299 ivd_video_decode_ip_t dec_ip{};
300 ivd_video_decode_op_t dec_op{};
301
302 dec_ip.e_cmd = IVD_CMD_VIDEO_DECODE;
303 dec_ip.u4_ts = 0;
304 dec_ip.pv_stream_buffer = (void *)data;
305 dec_ip.u4_num_Bytes = size;
306 dec_ip.u4_size = sizeof(ivd_video_decode_ip_t);
307 dec_ip.s_out_buffer = mOutBufHandle;
308
309 dec_op.u4_size = sizeof(ivd_video_decode_op_t);
310
311 ret = ivd_api_function(mCodec, (void *)&dec_ip, (void *)&dec_op);
312
313 /* In case of change in resolution, reset codec and feed the same data again
314 */
315 if (IVD_RES_CHANGED == (dec_op.u4_error_code & 0xFF)) {
316 resetCodec();
317 ret = ivd_api_function(mCodec, (void *)&dec_ip, (void *)&dec_op);
318 }
319 *bytesConsumed = dec_op.u4_num_bytes_consumed;
320
321 /* If no bytes are consumed, then consume 4 bytes to ensure fuzzer proceeds
322 * to feed next data */
323 if (!*bytesConsumed) *bytesConsumed = 4;
324
325 if (dec_op.u4_pic_wd && dec_op.u4_pic_ht &&
326 (mWidth != dec_op.u4_pic_wd || mHeight != dec_op.u4_pic_ht)) {
327 mWidth = std::min(dec_op.u4_pic_wd, (UWORD32)10240);
328 mHeight = std::min(dec_op.u4_pic_ht, (UWORD32)10240);
329 allocFrame();
330 }
331
332 return ret;
333 }
334
LLVMFuzzerTestOneInput(const uint8_t * data,size_t size)335 extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
336 if (size < 1) {
337 return 0;
338 }
339 size_t colorFormatOfst = std::min((size_t)OFFSET_COLOR_FORMAT, size - 1);
340 size_t numCoresOfst = std::min((size_t)OFFSET_NUM_CORES, size - 1);
341 size_t architectureOfst = std::min((size_t)OFFSET_ARCH, size - 1);
342 size_t architectureIdx = data[architectureOfst] % kSupportedArchitectures;
343 IVD_ARCH_T arch = (IVD_ARCH_T)supportedArchitectures[architectureIdx];
344 size_t colorFormatIdx = data[colorFormatOfst] % kSupportedColorFormats;
345 IV_COLOR_FORMAT_T colorFormat =
346 (IV_COLOR_FORMAT_T)(supportedColorFormats[colorFormatIdx]);
347 uint32_t numCores = (data[numCoresOfst] % kMaxCores) + 1;
348 size_t numDecodeCalls = 0;
349 Codec *codec = new Codec(colorFormat, numCores);
350 codec->createCodec();
351 codec->setArchitecture(arch);
352 codec->setCores();
353 codec->decodeHeader(data, size);
354 codec->setParams(IVD_DECODE_FRAME);
355 codec->allocFrame();
356
357 while (size > 0 && numDecodeCalls < kMaxNumDecodeCalls) {
358 IV_API_CALL_STATUS_T ret;
359 size_t bytesConsumed;
360 ret = codec->decodeFrame(data, size, &bytesConsumed);
361
362 bytesConsumed = std::min(size, bytesConsumed);
363 data += bytesConsumed;
364 size -= bytesConsumed;
365 numDecodeCalls++;
366 }
367
368 codec->freeFrame();
369 codec->deleteCodec();
370 delete codec;
371 return 0;
372 }
373