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
3 * found in the LICENSE file.
7 * This file defines the <code>PPP_ContentDecryptor_Private</code>
8 * interface. Note: This is a special interface, only to be used for Content
9 * Decryption Modules, not normal plugins.
16 * <code>PPP_ContentDecryptor_Private</code> structure contains the function
17 * pointers the decryption plugin must implement to provide services needed by
18 * the browser. This interface provides the plugin side support for the Content
19 * Decryption Module (CDM) for Encrypted Media Extensions:
20 * http://www.w3.org/TR/encrypted-media/
22 interface PPP_ContentDecryptor_Private {
24 * Initialize for the specified key system.
26 * @param[in] key_system A <code>PP_Var</code> of type
27 * <code>PP_VARTYPE_STRING</code> containing the name of the key system.
30 [in] PP_Instance instance,
31 [in] PP_Var key_system);
34 * Provides a server certificate to be used to encrypt messages to the
37 * @param[in] promise_id A reference for the promise that gets resolved or
38 * rejected depending upon the success or failure of setting the certificate.
40 * @param[in] server_certificate A <code>PP_Var</code> of type
41 * <code>PP_VARTYPE_ARRAYBUFFER</code> containing the certificate to be used.
43 void SetServerCertificate(
44 [in] PP_Instance instance,
45 [in] uint32_t promise_id,
46 [in] PP_Var server_certificate);
49 * Creates a session. <code>init_data_type</code> contains the MIME type of
50 * <code>init_data</code>. <code>init_data</code> is a data buffer
51 * containing data for use in generating the request.
53 * Note: <code>CreateSession()</code> must create a web session ID and provide
54 * it to the browser via <code>SessionCreated()</code> on the
55 * <code>PPB_ContentDecryptor_Private</code> interface.
57 * @param[in] promise_id A reference for the promise that gets resolved or
58 * rejected depending upon the success or failure when creating the session.
60 * @param[in] init_data_type A <code>PP_Var</code> of type
61 * <code>PP_VARTYPE_STRING</code> containing the MIME type for init_data.
63 * @param[in] init_data A <code>PP_Var</code> of type
64 * <code>PP_VARTYPE_ARRAYBUFFER</code> containing container specific
65 * initialization data.
67 * @param[in] session_type A <code>PP_SessionType</code> that indicates the
68 * type of session to be created.
71 [in] PP_Instance instance,
72 [in] uint32_t promise_id,
73 [in] PP_Var init_data_type,
74 [in] PP_Var init_data,
75 [in] PP_SessionType session_type);
78 * Loads a session whose web session ID is <code>web_session_id</code>.
80 * Note: After the session is successfully loaded, the CDM must call
81 * <code>SessionCreated()</code> with <code>web_session_id</code> on the
82 * <code>PPB_ContentDecryptor_Private</code> interface.
84 * @param[in] promise_id A reference for the promise that gets resolved or
85 * rejected depending upon the success or failure of loading the session.
87 * @param[in] web_session_id A <code>PP_Var</code> of type
88 * <code>PP_VARTYPE_STRING</code> containing the web session ID of the session
92 [in] PP_Instance instance,
93 [in] uint32_t promise_id,
94 [in] PP_Var web_session_id);
97 * Provides a license or other message to the decryptor.
99 * When the CDM needs more information, it must call
100 * <code>SessionMessage()</code> on the
101 * <code>PPB_ContentDecryptor_Private</code> interface, and the browser
102 * must notify the web application. When the CDM has finished processing
103 * <code>response</code> and needs no more information, it must call
104 * <code>SessionReady()</code> on the
105 * <code>PPB_ContentDecryptor_Private</code> interface, and the browser
106 * must notify the web application.
108 * @param[in] promise_id A reference for the promise that gets resolved or
109 * rejected depending upon the success or failure of updating the session.
111 * @param[in] web_session_id A <code>PP_Var</code> of type
112 * <code>PP_VARTYPE_STRING</code> containing the web session ID of the session
115 * @param[in] response A <code>PP_Var</code> of type
116 * <code>PP_VARTYPE_ARRAYBUFFER</code> containing the license or other
117 * message for the given session ID.
120 [in] PP_Instance instance,
121 [in] uint32_t promise_id,
122 [in] PP_Var web_session_id,
123 [in] PP_Var response);
126 * Close the specified session and related resources.
128 * @param[in] promise_id A reference for the promise that gets resolved or
129 * rejected depending upon the success or failure of closing the session.
131 * @param[in] web_session_id A <code>PP_Var</code> of type
132 * <code>PP_VARTYPE_STRING</code> containing the web session ID of the session
137 [in] PP_Instance instance,
138 [in] uint32_t promise_id,
139 [in] PP_Var web_session_id);
142 * Remove stored data associated with this session.
144 * @param[in] promise_id A reference for the promise that gets resolved or
145 * rejected depending upon the success or failure of removing the session
148 * @param[in] web_session_id A <code>PP_Var</code> of type
149 * <code>PP_VARTYPE_STRING</code> containing the web session ID of the session
154 [in] PP_Instance instance,
155 [in] uint32_t promise_id,
156 [in] PP_Var web_session_id);
159 * Get the key IDs for keys in the session that the CDM knows are currently
160 * usable to decrypt media data.
162 * @param[in] promise_id A reference for the promise that gets resolved or
163 * rejected depending upon the success or failure of obtaining the key IDs.
165 * @param[in] web_session_id A <code>PP_Var</code> of type
166 * <code>PP_VARTYPE_STRING</code> containing the web session ID of the session
170 void GetUsableKeyIds(
171 [in] PP_Instance instance,
172 [in] uint32_t promise_id,
173 [in] PP_Var web_session_id);
176 * Decrypts the block and returns the unencrypted block via
177 * <code>DeliverBlock()</code> on the
178 * <code>PPB_ContentDecryptor_Private</code> interface. The returned block
179 * contains encoded data.
181 * @param[in] resource A <code>PP_Resource</code> corresponding to a
182 * <code>PPB_Buffer_Dev</code> resource that contains an encrypted data
185 * @param[in] encrypted_block_info A <code>PP_EncryptedBlockInfo</code> that
186 * contains all auxiliary information needed for decryption of the
187 * <code>encrypted_block</code>.
190 [in] PP_Instance instance,
191 [in] PP_Resource encrypted_block,
192 [in] PP_EncryptedBlockInfo encrypted_block_info);
195 * Initializes the audio decoder using codec and settings in
196 * <code>decoder_config</code>, and returns the result of the initialization
197 * request to the browser using the <code>DecoderInitializeDone()</code> method
198 * on the <code>PPB_ContentDecryptor_Private</code> interface.
200 * @param[in] decoder_config A <code>PP_AudioDecoderConfig</code> that
201 * contains audio decoder settings and a request ID. The request ID is passed
202 * to the <code>DecoderInitializeDone()</code> method on the
203 * <code>PPB_ContentDecryptor_Private</code> interface to allow clients to
204 * associate the result with a audio decoder initialization request.
206 * @param[in] codec_extra_data A <code>PP_Resource</code> corresponding to a
207 * <code>PPB_Buffer_Dev</code> resource containing codec setup data required
208 * by some codecs. It should be set to 0 when the codec being initialized
209 * does not require it.
211 void InitializeAudioDecoder(
212 [in] PP_Instance instance,
213 [in] PP_AudioDecoderConfig decoder_config,
214 [in] PP_Resource codec_extra_data);
217 * Initializes the video decoder using codec and settings in
218 * <code>decoder_config</code>, and returns the result of the initialization
219 * request to the browser using the <code>DecoderInitializeDone()</code>
220 * method on the <code>PPB_ContentDecryptor_Private</code> interface.
222 * @param[in] decoder_config A <code>PP_VideoDecoderConfig</code> that
223 * contains video decoder settings and a request ID. The request ID is passed
224 * to the <code>DecoderInitializeDone()</code> method on the
225 * <code>PPB_ContentDecryptor_Private</code> interface to allow clients to
226 * associate the result with a video decoder initialization request.
228 * @param[in] codec_extra_data A <code>PP_Resource</code> corresponding to a
229 * <code>PPB_Buffer_Dev</code> resource containing codec setup data required
230 * by some codecs. It should be set to 0 when the codec being initialized
231 * does not require it.
233 void InitializeVideoDecoder(
234 [in] PP_Instance instance,
235 [in] PP_VideoDecoderConfig decoder_config,
236 [in] PP_Resource codec_extra_data);
239 * De-initializes the decoder for the <code>PP_DecryptorStreamType</code>
240 * specified by <code>decoder_type</code> and sets it to an uninitialized
241 * state. The decoder can be re-initialized after de-initialization completes
242 * by calling <code>InitializeAudioDecoder</code> or
243 * <code>InitializeVideoDecoder</code>.
245 * De-initialization completion is reported to the browser using the
246 * <code>DecoderDeinitializeDone()</code> method on the
247 * <code>PPB_ContentDecryptor_Private</code> interface.
249 * @param[in] decoder_type A <code>PP_DecryptorStreamType</code> that
250 * specifies the decoder to de-initialize.
252 * @param[in] request_id A request ID that allows the browser to associate a
253 * request to de-initialize a decoder with the corresponding call to the
254 * <code>DecoderDeinitializeDone()</code> method on the
255 * <code>PPB_ContentDecryptor_Private</code> interface.
257 void DeinitializeDecoder(
258 [in] PP_Instance instance,
259 [in] PP_DecryptorStreamType decoder_type,
260 [in] uint32_t request_id);
263 * Resets the decoder for the <code>PP_DecryptorStreamType</code> specified
264 * by <code>decoder_type</code> to an initialized clean state. Reset
265 * completion is reported to the browser using the
266 * <code>DecoderResetDone()</code> method on the
267 * <code>PPB_ContentDecryptor_Private</code> interface. This method can be
268 * used to signal a discontinuity in the encoded data stream, and is safe to
269 * call multiple times.
271 * @param[in] decoder_type A <code>PP_DecryptorStreamType</code> that
272 * specifies the decoder to reset.
274 * @param[in] request_id A request ID that allows the browser to associate a
275 * request to reset the decoder with a corresponding call to the
276 * <code>DecoderResetDone()</code> method on the
277 * <code>PPB_ContentDecryptor_Private</code> interface.
280 [in] PP_Instance instance,
281 [in] PP_DecryptorStreamType decoder_type,
282 [in] uint32_t request_id);
285 * Decrypts encrypted_buffer, decodes it, and returns the unencrypted
286 * uncompressed (decoded) data to the browser via the
287 * <code>DeliverFrame()</code> or <code>DeliverSamples()</code> method on the
288 * <code>PPB_ContentDecryptor_Private</code> interface.
290 * @param[in] decoder_type A <code>PP_DecryptorStreamType</code> that
291 * specifies the decoder to use after <code>encrypted_buffer</code> is
294 * @param[in] encrypted_buffer A <code>PP_Resource</code> corresponding to a
295 * <code>PPB_Buffer_Dev</code> resource that contains encrypted media data.
297 * @param[in] encrypted_block_info A <code>PP_EncryptedBlockInfo</code> that
298 * contains all auxiliary information needed for decryption of the
299 * <code>encrypted_block</code>.
301 void DecryptAndDecode(
302 [in] PP_Instance instance,
303 [in] PP_DecryptorStreamType decoder_type,
304 [in] PP_Resource encrypted_buffer,
305 [in] PP_EncryptedBlockInfo encrypted_block_info);