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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_ | 5 #ifndef WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_ |
6 #define WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_ | 6 #define WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_ |
7 | 7 |
8 #if defined(_MSC_VER) | 8 #if defined(_MSC_VER) |
9 typedef unsigned char uint8_t; | 9 typedef unsigned char uint8_t; |
10 typedef unsigned int uint32_t; | 10 typedef unsigned int uint32_t; |
11 typedef int int32_t; | |
11 typedef __int64 int64_t; | 12 typedef __int64 int64_t; |
12 #else | 13 #else |
13 #include <stdint.h> | 14 #include <stdint.h> |
14 #endif | 15 #endif |
15 | 16 |
17 #include "base/time.h" | |
16 #include "webkit/media/crypto/ppapi/cdm_export.h" | 18 #include "webkit/media/crypto/ppapi/cdm_export.h" |
17 | 19 |
18 namespace cdm { | 20 namespace cdm { |
19 class ContentDecryptionModule; | 21 class ContentDecryptionModule; |
20 } | 22 } |
21 | 23 |
22 extern "C" { | 24 extern "C" { |
23 CDM_EXPORT cdm::ContentDecryptionModule* CreateCdmInstance(); | 25 CDM_EXPORT cdm::ContentDecryptionModule* CreateCdmInstance(); |
24 CDM_EXPORT void DestroyCdmInstance(cdm::ContentDecryptionModule* instance); | 26 CDM_EXPORT void DestroyCdmInstance(cdm::ContentDecryptionModule* instance); |
25 CDM_EXPORT const char* GetCdmVersion(); | 27 CDM_EXPORT const char* GetCdmVersion(); |
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122 : data(NULL), | 124 : data(NULL), |
123 data_size(0), | 125 data_size(0), |
124 timestamp(0) {} | 126 timestamp(0) {} |
125 | 127 |
126 const uint8_t* data; // Pointer to the beginning of the output data. | 128 const uint8_t* data; // Pointer to the beginning of the output data. |
127 uint32_t data_size; // Size (in bytes) of |data|. | 129 uint32_t data_size; // Size (in bytes) of |data|. |
128 | 130 |
129 int64_t timestamp; // Presentation timestamp in microseconds. | 131 int64_t timestamp; // Presentation timestamp in microseconds. |
130 }; | 132 }; |
131 | 133 |
134 struct VideoFrame { | |
135 // Surface formats roughly based on FOURCC labels, see: | |
136 // http://www.fourcc.org/rgb.php | |
137 // http://www.fourcc.org/yuv.php | |
138 enum Format { | |
ddorwin
2012/08/29 17:33:49
Maybe ColorFormat or something like that. Unless "
Tom Finegan
2012/08/30 17:09:23
From src/media, but went with ColorFormat because
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139 INVALID = 0, // Invalid format value. Used for error reporting. | |
ddorwin
2012/08/29 17:33:49
Check the naming in style guide. Might need more c
Tom Finegan
2012/08/30 17:09:23
From src/media. Fixed this, and discarded everythi
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140 RGB32, // 32bpp RGB packed with extra byte 8:8:8. | |
141 YV12, // 12bpp YVU planar 1x1 Y, 2x2 VU samples. | |
ddorwin
2012/08/29 17:33:49
Should probably align comments in this case.
Tom Finegan
2012/08/30 17:09:23
Done.
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142 YV16, // 16bpp YVU planar 1x1 Y, 2x1 VU samples. | |
143 EMPTY, // An empty frame. | |
ddorwin
2012/08/29 17:33:49
Why is EMPTY in the middle of YVU items? Should it
Tom Finegan
2012/08/30 17:09:23
From src/media.
| |
144 I420, // 12bpp YVU planar 1x1 Y, 2x2 UV samples. | |
145 }; | |
146 | |
147 struct Size { | |
148 Size() : width(0), height(0) {} | |
149 Size(int32_t width, int32_t height) : width(width), height(height) {} | |
150 | |
151 int32_t width; | |
152 int32_t height; | |
153 }; | |
154 | |
155 const static int32_t kMaxPlanes = 3; | |
156 | |
157 VideoFrame() : format(INVALID) { | |
158 for (int i = 0; i < kMaxPlanes; ++i) { | |
159 strides[i] = 0; | |
160 data[i] = NULL; | |
161 } | |
162 } | |
163 | |
164 Format format; | |
165 | |
166 // Width and height of the video frame. | |
167 Size data_size; | |
ddorwin
2012/08/29 17:33:49
frame_size. data doesn't seem right.
Tom Finegan
2012/08/30 17:09:23
From src/media, but I prefer frame_size. Done.
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168 | |
169 // Array of strides for each plane, typically greater or equal to the width | |
170 // of the surface divided by the horizontal sampling period. Note that | |
171 // strides can be negative. | |
172 int32_t strides[kMaxPlanes]; | |
173 | |
174 // Array of data pointers to each plane. | |
175 uint8_t* data[kMaxPlanes]; | |
176 | |
177 base::TimeDelta timestamp; // Presentation timestamp in microseconds. | |
178 }; | |
179 | |
180 struct VideoDecoderConfig { | |
181 enum VideoCodec { | |
182 kUnknownVideoCodec = 0, | |
ddorwin
2012/08/29 17:33:49
This name is inconsistent with the rest.
Tom Finegan
2012/08/30 17:09:23
From src/media. Dropped everything but unknown, h2
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183 kCodecH264, | |
ddorwin
2012/08/29 17:33:49
kName vs. NAME for Format. Pick one - see style gu
Tom Finegan
2012/08/30 17:09:23
The naming inconsistency is due to src/media ances
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184 kCodecVC1, | |
ddorwin
2012/08/29 17:33:49
We're not going to support these 4, so remove them
Tom Finegan
2012/08/30 17:09:23
Done.
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185 kCodecMPEG2, | |
186 kCodecMPEG4, | |
187 kCodecTheora, | |
188 kCodecVP8 | |
189 }; | |
190 | |
191 enum VideoCodecProfile { | |
192 VIDEO_CODEC_PROFILE_UNKNOWN = -1, | |
193 H264PROFILE_MIN = 0, | |
ddorwin
2012/08/29 17:33:49
I wonder if Chrome supports all these.
Tom Finegan
2012/08/30 17:09:23
From src/media, and probably something we should l
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194 H264PROFILE_BASELINE = H264PROFILE_MIN, | |
195 H264PROFILE_MAIN = 1, | |
196 H264PROFILE_EXTENDED = 2, | |
197 H264PROFILE_HIGH = 3, | |
198 H264PROFILE_HIGH10PROFILE = 4, | |
199 H264PROFILE_HIGH422PROFILE = 5, | |
200 H264PROFILE_HIGH444PREDICTIVEPROFILE = 6, | |
201 H264PROFILE_SCALABLEBASELINE = 7, | |
202 H264PROFILE_SCALABLEHIGH = 8, | |
203 H264PROFILE_STEREOHIGH = 9, | |
204 H264PROFILE_MULTIVIEWHIGH = 10, | |
205 H264PROFILE_MAX = H264PROFILE_MULTIVIEWHIGH, | |
206 VP8PROFILE_MIN = 11, | |
207 VP8PROFILE_MAIN = VP8PROFILE_MIN, | |
208 VP8PROFILE_MAX = VP8PROFILE_MAIN, | |
209 VIDEO_CODEC_PROFILE_MAX = VP8PROFILE_MAX | |
210 }; | |
211 | |
212 VideoCodec codec; | |
213 VideoCodecProfile profile; | |
214 VideoFrame::Format format; | |
ddorwin
2012/08/29 17:33:49
Why do both the frame and config have a format and
Tom Finegan
2012/08/30 17:09:23
From src/media.
I think this is because we need a
ddorwin
2012/09/02 21:39:07
It seems this would only be used for error checkin
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215 VideoFrame::Size coded_size; | |
ddorwin
2012/08/29 17:33:49
coded?
encoded? compressed?
Tom Finegan
2012/08/30 17:09:23
Done, s/coded_size/frame_size/.
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216 uint8_t* extra_data; | |
ddorwin
2012/08/29 17:33:49
What is this?
Tom Finegan
2012/08/30 17:09:23
From src/media.
Comment from media/base/video_dec
ddorwin
2012/09/02 21:39:07
Will we definitely need this? If so, we should pro
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217 int32_t extra_data_size; | |
218 | |
219 VideoDecoderConfig() | |
220 : codec(kUnknownVideoCodec), | |
221 profile(VIDEO_CODEC_PROFILE_UNKNOWN), | |
222 format(VideoFrame::INVALID), | |
223 coded_size(0, 0), | |
224 extra_data(NULL), | |
225 extra_data_size(0) {} | |
226 }; | |
227 | |
132 class ContentDecryptionModule { | 228 class ContentDecryptionModule { |
133 public: | 229 public: |
134 // Generates a |key_request| given the |init_data|. | 230 // Generates a |key_request| given the |init_data|. |
135 // Returns kSuccess if the key request was successfully generated, | 231 // Returns kSuccess if the key request was successfully generated, |
136 // in which case the callee should have allocated memory for the output | 232 // in which case the callee should have allocated memory for the output |
137 // parameters (e.g |session_id| in |key_request|) and passed the ownership | 233 // parameters (e.g |session_id| in |key_request|) and passed the ownership |
138 // to the caller. | 234 // to the caller. |
139 // Returns kErrorUnknown otherwise, in which case the output parameters should | 235 // Returns kErrorUnknown otherwise, in which case the output parameters should |
140 // not be used by the caller. | 236 // not be used by the caller. |
141 // | 237 // |
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171 // to decrypt. | 267 // to decrypt. |
172 // Returns kErrorUnknown if any other error happened. | 268 // Returns kErrorUnknown if any other error happened. |
173 // In these two cases, |decrypted_buffer| should not be used by the caller. | 269 // In these two cases, |decrypted_buffer| should not be used by the caller. |
174 // | 270 // |
175 // TODO(xhwang): It's not safe to pass the ownership of the dynamically | 271 // TODO(xhwang): It's not safe to pass the ownership of the dynamically |
176 // allocated memory over library boundaries. Fix it after related PPAPI change | 272 // allocated memory over library boundaries. Fix it after related PPAPI change |
177 // and sample CDM are landed. | 273 // and sample CDM are landed. |
178 virtual Status Decrypt(const InputBuffer& encrypted_buffer, | 274 virtual Status Decrypt(const InputBuffer& encrypted_buffer, |
179 OutputBuffer* decrypted_buffer) = 0; | 275 OutputBuffer* decrypted_buffer) = 0; |
180 | 276 |
277 // Initializes the CDM video decoder with |video_decoder_config|. This | |
ddorwin
2012/08/29 17:33:49
To keep Decrypt* together, I would move this above
Tom Finegan
2012/08/30 17:09:23
Done.
| |
278 // function must be called before DecryptAndDecode is called. | |
279 // Returns kSuccess if the |video_decoder_config| is supported and the CDM | |
280 // video decoder is successfully initialized. | |
281 // Returns kErrorUnknown otherwise. | |
282 virtual Status InitializeVideoDecoder( | |
283 const VideoDecoderConfig& video_decoder_config) = 0; | |
284 | |
285 // Decrypts the |encrypted_buffer| and decodes the decrypted buffer into a | |
286 // |video_frame|. Upon end-of-stream, the caller should call this function | |
287 // repeatedly with empty |encrypted_buffer| (where |data| is NULL) until | |
288 // only empty (|format| being EMPTY) |video_frame| can be produced. | |
ddorwin
2012/08/29 17:33:49
Do we need a Flush() if no longer care about the f
Tom Finegan
2012/08/30 17:09:23
We might need it for seeking, added.
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289 // Returns kSuccess if decryption and decoding both succeeded, in which case | |
290 // the callee should have filled the |video_frame| and passed the ownership of | |
291 // |data| in |video_frame| to the caller. | |
292 // Returns kErrorNoKey if the CDM did not have the necessary decryption key | |
293 // to decrypt. | |
294 // Returns kErrorUnknown if any other (decryption or decoding) error happened. | |
295 // In these two cases, |video_frame| should not be used by the caller. | |
296 // | |
297 // TODO(xhwang): It's not safe to pass the ownership of the dynamically | |
298 // allocated memory over library boundaries. Fix it after related PPAPI change | |
299 // and sample CDM are landed. | |
300 virtual Status DecryptAndDecode(const InputBuffer& encrypted_buffer, | |
301 VideoFrame* video_frame) = 0; | |
302 | |
181 virtual ~ContentDecryptionModule() {} | 303 virtual ~ContentDecryptionModule() {} |
182 }; | 304 }; |
183 | 305 |
184 } // namespace cdm | 306 } // namespace cdm |
185 | 307 |
186 #endif // WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_ | 308 #endif // WEBKIT_MEDIA_CRYPTO_PPAPI_CONTENT_DECRYPTION_MODULE_H_ |
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