git.sesse.net Git - vlc/blob - modules/codec/omxil/android_mediacodec.c

   1 /*****************************************************************************
   2  * android_mediacodec.c: Video decoder module using the Android MediaCodec API
   3  *****************************************************************************
   4  * Copyright (C) 2012 Martin Storsjo
   5  *
   6  * Authors: Martin Storsjo <martin@martin.st>
   7  *
   8  * This program is free software; you can redistribute it and/or modify it
   9  * under the terms of the GNU Lesser General Public License as published by
  10  * the Free Software Foundation; either version 2.1 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16  * GNU Lesser General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU Lesser General Public License
  19  * along with this program; if not, write to the Free Software Foundation,
  20  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  21  *****************************************************************************/
  22
  23 /*****************************************************************************
  24  * Preamble
  25  *****************************************************************************/
  26 #ifdef HAVE_CONFIG_H
  27 # include "config.h"
  28 #endif
  29
  30 #include <jni.h>
  31 #include <stdint.h>
  32
  33 #include <vlc_common.h>
  34 #include <vlc_plugin.h>
  35 #include <vlc_codec.h>
  36 #include <vlc_block_helper.h>
  37 #include <vlc_cpu.h>
  38
  39 #include "../h264_nal.h"
  40 #include "../hevc_nal.h"
  41 #include <OMX_Core.h>
  42 #include <OMX_Component.h>
  43 #include "omxil_utils.h"
  44 #include "android_opaque.h"
  45 #include "../../video_output/android/android_window.h"
  46
  47 #define INFO_OUTPUT_BUFFERS_CHANGED -3
  48 #define INFO_OUTPUT_FORMAT_CHANGED  -2
  49 #define INFO_TRY_AGAIN_LATER        -1
  50
  51 #define THREAD_NAME "android_mediacodec"
  52
  53 extern int jni_attach_thread(JNIEnv **env, const char *thread_name);
  54 extern void jni_detach_thread();
  55 /* JNI functions to get/set an Android Surface object. */
  56 extern jobject jni_LockAndGetAndroidJavaSurface();
  57 extern void jni_UnlockAndroidSurface();
  58 extern void jni_EventHardwareAccelerationError();
  59 extern bool jni_IsVideoPlayerActivityCreated();
  60
  61 /* Implementation of a circular buffer of timestamps with overwriting
  62  * of older values. MediaCodec has only one type of timestamp, if a
  63  * block has no PTS, we send the DTS instead. Some hardware decoders
  64  * cannot cope with this situation and output the frames in the wrong
  65  * order. As a workaround in this case, we use a FIFO of timestamps in
  66  * order to remember which input packets had no PTS.  Since an
  67  * hardware decoder can silently drop frames, this might cause a
  68  * growing desynchronization with the actual timestamp. Thus the
  69  * circular buffer has a limited size and will overwrite older values.
  70  */
  71 typedef struct
  72 {
  73     uint32_t          begin;
  74     uint32_t          size;
  75     uint32_t          capacity;
  76     int64_t           *buffer;
  77 } timestamp_fifo_t;
  78
  79 static timestamp_fifo_t *timestamp_FifoNew(uint32_t capacity)
  80 {
  81     timestamp_fifo_t *fifo = calloc(1, sizeof(*fifo));
  82     if (!fifo)
  83         return NULL;
  84     fifo->buffer = malloc(capacity * sizeof(*fifo->buffer));
  85     if (!fifo->buffer) {
  86         free(fifo);
  87         return NULL;
  88     }
  89     fifo->capacity = capacity;
  90     return fifo;
  91 }
  92
  93 static void timestamp_FifoRelease(timestamp_fifo_t *fifo)
  94 {
  95     free(fifo->buffer);
  96     free(fifo);
  97 }
  98
  99 static bool timestamp_FifoIsEmpty(timestamp_fifo_t *fifo)
 100 {
 101     return fifo->size == 0;
 102 }
 103
 104 static bool timestamp_FifoIsFull(timestamp_fifo_t *fifo)
 105 {
 106     return fifo->size == fifo->capacity;
 107 }
 108
 109 static void timestamp_FifoEmpty(timestamp_fifo_t *fifo)
 110 {
 111     fifo->size = 0;
 112 }
 113
 114 static void timestamp_FifoPut(timestamp_fifo_t *fifo, int64_t ts)
 115 {
 116     uint32_t end = (fifo->begin + fifo->size) % fifo->capacity;
 117     fifo->buffer[end] = ts;
 118     if (!timestamp_FifoIsFull(fifo))
 119         fifo->size += 1;
 120     else
 121         fifo->begin = (fifo->begin + 1) % fifo->capacity;
 122 }
 123
 124 static int64_t timestamp_FifoGet(timestamp_fifo_t *fifo)
 125 {
 126     if (timestamp_FifoIsEmpty(fifo))
 127         return VLC_TS_INVALID;
 128
 129     int64_t result = fifo->buffer[fifo->begin];
 130     fifo->begin = (fifo->begin + 1) % fifo->capacity;
 131     fifo->size -= 1;
 132     return result;
 133 }
 134
 135 struct decoder_sys_t
 136 {
 137     jclass media_codec_list_class, media_codec_class, media_format_class;
 138     jclass buffer_info_class, byte_buffer_class;
 139     jmethodID tostring;
 140     jmethodID get_codec_count, get_codec_info_at, is_encoder, get_capabilities_for_type;
 141     jfieldID profile_levels_field, profile_field, level_field;
 142     jmethodID get_supported_types, get_name;
 143     jmethodID create_by_codec_name, configure, start, stop, flush, release;
 144     jmethodID get_output_format;
 145     jmethodID get_input_buffers, get_input_buffer;
 146     jmethodID get_output_buffers, get_output_buffer;
 147     jmethodID dequeue_input_buffer, dequeue_output_buffer, queue_input_buffer;
 148     jmethodID release_output_buffer;
 149     jmethodID create_video_format, set_integer, set_bytebuffer, get_integer;
 150     jmethodID buffer_info_ctor;
 151     jmethodID allocate_direct, limit;
 152     jfieldID size_field, offset_field, pts_field;
 153
 154     uint32_t nal_size;
 155
 156     jobject codec;
 157     jobject buffer_info;
 158     jobject input_buffers, output_buffers;
 159     int pixel_format;
 160     int stride, slice_height;
 161     char *name;
 162
 163     bool allocated;
 164     bool started;
 165     bool decoded;
 166     bool error_state;
 167     bool error_event_sent;
 168
 169     ArchitectureSpecificCopyData architecture_specific_data;
 170
 171     /* Direct rendering members. */
 172     bool direct_rendering;
 173     picture_t** pp_inflight_pictures; /**< stores the inflight picture for each output buffer or NULL */
 174     unsigned int i_inflight_pictures;
 175
 176     timestamp_fifo_t *timestamp_fifo;
 177 };
 178
 179 enum Types
 180 {
 181     METHOD, STATIC_METHOD, FIELD
 182 };
 183
 184 #define OFF(x) offsetof(struct decoder_sys_t, x)
 185 struct classname
 186 {
 187     const char *name;
 188     int offset;
 189 };
 190 static const struct classname classes[] = {
 191     { "android/media/MediaCodecList", OFF(media_codec_list_class) },
 192     { "android/media/MediaCodec", OFF(media_codec_class) },
 193     { "android/media/MediaFormat", OFF(media_format_class) },
 194     { "android/media/MediaFormat", OFF(media_format_class) },
 195     { "android/media/MediaCodec$BufferInfo", OFF(buffer_info_class) },
 196     { "java/nio/ByteBuffer", OFF(byte_buffer_class) },
 197     { NULL, 0 },
 198 };
 199
 200 struct member
 201 {
 202     const char *name;
 203     const char *sig;
 204     const char *class;
 205     int offset;
 206     int type;
 207     bool critical;
 208 };
 209 static const struct member members[] = {
 210     { "toString", "()Ljava/lang/String;", "java/lang/Object", OFF(tostring), METHOD, true },
 211
 212     { "getCodecCount", "()I", "android/media/MediaCodecList", OFF(get_codec_count), STATIC_METHOD, true },
 213     { "getCodecInfoAt", "(I)Landroid/media/MediaCodecInfo;", "android/media/MediaCodecList", OFF(get_codec_info_at), STATIC_METHOD, true },
 214
 215     { "isEncoder", "()Z", "android/media/MediaCodecInfo", OFF(is_encoder), METHOD, true },
 216     { "getSupportedTypes", "()[Ljava/lang/String;", "android/media/MediaCodecInfo", OFF(get_supported_types), METHOD, true },
 217     { "getName", "()Ljava/lang/String;", "android/media/MediaCodecInfo", OFF(get_name), METHOD, true },
 218     { "getCapabilitiesForType", "(Ljava/lang/String;)Landroid/media/MediaCodecInfo$CodecCapabilities;", "android/media/MediaCodecInfo", OFF(get_capabilities_for_type), METHOD, true },
 219
 220     { "profileLevels", "[Landroid/media/MediaCodecInfo$CodecProfileLevel;", "android/media/MediaCodecInfo$CodecCapabilities", OFF(profile_levels_field), FIELD, true },
 221     { "profile", "I", "android/media/MediaCodecInfo$CodecProfileLevel", OFF(profile_field), FIELD, true },
 222     { "level", "I", "android/media/MediaCodecInfo$CodecProfileLevel", OFF(level_field), FIELD, true },
 223
 224     { "createByCodecName", "(Ljava/lang/String;)Landroid/media/MediaCodec;", "android/media/MediaCodec", OFF(create_by_codec_name), STATIC_METHOD, true },
 225     { "configure", "(Landroid/media/MediaFormat;Landroid/view/Surface;Landroid/media/MediaCrypto;I)V", "android/media/MediaCodec", OFF(configure), METHOD, true },
 226     { "start", "()V", "android/media/MediaCodec", OFF(start), METHOD, true },
 227     { "stop", "()V", "android/media/MediaCodec", OFF(stop), METHOD, true },
 228     { "flush", "()V", "android/media/MediaCodec", OFF(flush), METHOD, true },
 229     { "release", "()V", "android/media/MediaCodec", OFF(release), METHOD, true },
 230     { "getOutputFormat", "()Landroid/media/MediaFormat;", "android/media/MediaCodec", OFF(get_output_format), METHOD, true },
 231     { "getInputBuffers", "()[Ljava/nio/ByteBuffer;", "android/media/MediaCodec", OFF(get_input_buffers), METHOD, false },
 232     { "getInputBuffer", "(I)Ljava/nio/ByteBuffer;", "android/media/MediaCodec", OFF(get_input_buffer), METHOD, false },
 233     { "getOutputBuffers", "()[Ljava/nio/ByteBuffer;", "android/media/MediaCodec", OFF(get_output_buffers), METHOD, false },
 234     { "getOutputBuffer", "(I)Ljava/nio/ByteBuffer;", "android/media/MediaCodec", OFF(get_output_buffer), METHOD, false },
 235     { "dequeueInputBuffer", "(J)I", "android/media/MediaCodec", OFF(dequeue_input_buffer), METHOD, true },
 236     { "dequeueOutputBuffer", "(Landroid/media/MediaCodec$BufferInfo;J)I", "android/media/MediaCodec", OFF(dequeue_output_buffer), METHOD, true },
 237     { "queueInputBuffer", "(IIIJI)V", "android/media/MediaCodec", OFF(queue_input_buffer), METHOD, true },
 238     { "releaseOutputBuffer", "(IZ)V", "android/media/MediaCodec", OFF(release_output_buffer), METHOD, true },
 239
 240     { "createVideoFormat", "(Ljava/lang/String;II)Landroid/media/MediaFormat;", "android/media/MediaFormat", OFF(create_video_format), STATIC_METHOD, true },
 241     { "setInteger", "(Ljava/lang/String;I)V", "android/media/MediaFormat", OFF(set_integer), METHOD, true },
 242     { "getInteger", "(Ljava/lang/String;)I", "android/media/MediaFormat", OFF(get_integer), METHOD, true },
 243     { "setByteBuffer", "(Ljava/lang/String;Ljava/nio/ByteBuffer;)V", "android/media/MediaFormat", OFF(set_bytebuffer), METHOD, true },
 244
 245     { "<init>", "()V", "android/media/MediaCodec$BufferInfo", OFF(buffer_info_ctor), METHOD, true },
 246     { "size", "I", "android/media/MediaCodec$BufferInfo", OFF(size_field), FIELD, true },
 247     { "offset", "I", "android/media/MediaCodec$BufferInfo", OFF(offset_field), FIELD, true },
 248     { "presentationTimeUs", "J", "android/media/MediaCodec$BufferInfo", OFF(pts_field), FIELD, true },
 249
 250     { "allocateDirect", "(I)Ljava/nio/ByteBuffer;", "java/nio/ByteBuffer", OFF(allocate_direct), STATIC_METHOD, true },
 251     { "limit", "(I)Ljava/nio/Buffer;", "java/nio/ByteBuffer", OFF(limit), METHOD, true },
 252
 253     { NULL, NULL, NULL, 0, 0, false },
 254 };
 255
 256 #define GET_INTEGER(obj, name) (*env)->CallIntMethod(env, obj, p_sys->get_integer, (*env)->NewStringUTF(env, name))
 257
 258 /*****************************************************************************
 259  * Local prototypes
 260  *****************************************************************************/
 261 static int  OpenDecoder(vlc_object_t *);
 262 static void CloseDecoder(vlc_object_t *);
 263
 264 static picture_t *DecodeVideo(decoder_t *, block_t **);
 265
 266 static void InvalidateAllPictures(decoder_t *);
 267 static int InsertInflightPicture(decoder_t *, picture_t *, unsigned int );
 268
 269 /*****************************************************************************
 270  * Module descriptor
 271  *****************************************************************************/
 272 #define DIRECTRENDERING_TEXT N_("Android direct rendering")
 273 #define DIRECTRENDERING_LONGTEXT N_(\
 274         "Enable Android direct rendering using opaque buffers.")
 275
 276 #define CFG_PREFIX "mediacodec-"
 277
 278 vlc_module_begin ()
 279     set_description( N_("Video decoder using Android MediaCodec") )
 280     set_category( CAT_INPUT )
 281     set_subcategory( SUBCAT_INPUT_VCODEC )
 282     set_section( N_("Decoding") , NULL )
 283     set_capability( "decoder", 0 ) /* Only enabled via commandline arguments */
 284     add_bool(CFG_PREFIX "dr", true,
 285              DIRECTRENDERING_TEXT, DIRECTRENDERING_LONGTEXT, true)
 286     set_callbacks( OpenDecoder, CloseDecoder )
 287 vlc_module_end ()
 288
 289 static int jstrcmp(JNIEnv* env, jobject str, const char* str2)
 290 {
 291     jsize len = (*env)->GetStringUTFLength(env, str);
 292     if (len != (jsize) strlen(str2))
 293         return -1;
 294     const char *ptr = (*env)->GetStringUTFChars(env, str, NULL);
 295     int ret = memcmp(ptr, str2, len);
 296     (*env)->ReleaseStringUTFChars(env, str, ptr);
 297     return ret;
 298 }
 299
 300 static inline bool check_exception( JNIEnv *env )
 301 {
 302     if ((*env)->ExceptionOccurred(env)) {
 303         (*env)->ExceptionClear(env);
 304         return true;
 305     }
 306     else
 307         return false;
 308 }
 309 #define CHECK_EXCEPTION() check_exception( env )
 310
 311 static bool codec_is_blacklisted( const char *p_name, int i_name_len )
 312 {
 313      static const char *blacklisted_codecs[] = {
 314         /* software decoders */
 315         "OMX.google.",
 316         /* crashes mediaserver */
 317         "OMX.MTK.VIDEO.DECODER.MPEG4",
 318         NULL,
 319      };
 320
 321      for( const char **pp_bl_codecs = blacklisted_codecs; *pp_bl_codecs != NULL;
 322           pp_bl_codecs++ )
 323      {
 324         if( !strncmp( p_name, *pp_bl_codecs,
 325             __MIN( strlen(*pp_bl_codecs), i_name_len ) ) )
 326             return true;
 327      }
 328      return false;
 329 }
 330
 331 /*****************************************************************************
 332  * OpenDecoder: Create the decoder instance
 333  *****************************************************************************/
 334 static int OpenDecoder(vlc_object_t *p_this)
 335 {
 336     decoder_t *p_dec = (decoder_t*)p_this;
 337     decoder_sys_t *p_sys;
 338
 339     if (p_dec->fmt_in.i_cat != VIDEO_ES && !p_dec->b_force)
 340         return VLC_EGENERIC;
 341
 342     const char *mime = NULL;
 343     switch (p_dec->fmt_in.i_codec) {
 344     case VLC_CODEC_HEVC: mime = "video/hevc"; break;
 345     case VLC_CODEC_H264: mime = "video/avc"; break;
 346     case VLC_CODEC_H263: mime = "video/3gpp"; break;
 347     case VLC_CODEC_MP4V: mime = "video/mp4v-es"; break;
 348     case VLC_CODEC_WMV3: mime = "video/x-ms-wmv"; break;
 349     case VLC_CODEC_VC1:  mime = "video/wvc1"; break;
 350     case VLC_CODEC_VP8:  mime = "video/x-vnd.on2.vp8"; break;
 351     case VLC_CODEC_VP9:  mime = "video/x-vnd.on2.vp9"; break;
 352     default:
 353         msg_Dbg(p_dec, "codec %4.4s not supported", (char *)&p_dec->fmt_in.i_codec);
 354         return VLC_EGENERIC;
 355     }
 356
 357     size_t fmt_profile = 0;
 358     if (p_dec->fmt_in.i_codec == VLC_CODEC_H264)
 359         h264_get_profile_level(&p_dec->fmt_in, &fmt_profile, NULL, NULL);
 360
 361     /* Allocate the memory needed to store the decoder's structure */
 362     if ((p_dec->p_sys = p_sys = calloc(1, sizeof(*p_sys))) == NULL)
 363         return VLC_ENOMEM;
 364
 365     p_dec->pf_decode_video = DecodeVideo;
 366
 367     p_dec->fmt_out.i_cat = p_dec->fmt_in.i_cat;
 368     p_dec->fmt_out.video = p_dec->fmt_in.video;
 369     p_dec->fmt_out.audio = p_dec->fmt_in.audio;
 370     p_dec->b_need_packetized = true;
 371
 372     JNIEnv* env = NULL;
 373     jni_attach_thread(&env, THREAD_NAME);
 374
 375     for (int i = 0; classes[i].name; i++) {
 376         *(jclass*)((uint8_t*)p_sys + classes[i].offset) =
 377             (*env)->FindClass(env, classes[i].name);
 378
 379         if (CHECK_EXCEPTION()) {
 380             msg_Warn(p_dec, "Unable to find class %s", classes[i].name);
 381             goto error;
 382         }
 383     }
 384
 385     jclass last_class;
 386     for (int i = 0; members[i].name; i++) {
 387         if (i == 0 || strcmp(members[i].class, members[i - 1].class))
 388             last_class = (*env)->FindClass(env, members[i].class);
 389
 390         if (CHECK_EXCEPTION()) {
 391             msg_Warn(p_dec, "Unable to find class %s", members[i].class);
 392             goto error;
 393         }
 394
 395         switch (members[i].type) {
 396         case METHOD:
 397             *(jmethodID*)((uint8_t*)p_sys + members[i].offset) =
 398                 (*env)->GetMethodID(env, last_class, members[i].name, members[i].sig);
 399             break;
 400         case STATIC_METHOD:
 401             *(jmethodID*)((uint8_t*)p_sys + members[i].offset) =
 402                 (*env)->GetStaticMethodID(env, last_class, members[i].name, members[i].sig);
 403             break;
 404         case FIELD:
 405             *(jfieldID*)((uint8_t*)p_sys + members[i].offset) =
 406                 (*env)->GetFieldID(env, last_class, members[i].name, members[i].sig);
 407             break;
 408         }
 409         if (CHECK_EXCEPTION()) {
 410             msg_Warn(p_dec, "Unable to find the member %s in %s",
 411                      members[i].name, members[i].class);
 412             if (members[i].critical)
 413                 goto error;
 414         }
 415     }
 416     /* getInputBuffers and getOutputBuffers are deprecated if API >= 21
 417      * use getInputBuffer and getOutputBuffer instead. */
 418     if (p_sys->get_input_buffer && p_sys->get_output_buffer) {
 419         p_sys->get_output_buffers =
 420         p_sys->get_input_buffers = NULL;
 421     } else if (!p_sys->get_output_buffers && !p_sys->get_input_buffers) {
 422         msg_Warn(p_dec, "Unable to find get Output/Input Buffer/Buffers");
 423         goto error;
 424     }
 425
 426     int num_codecs = (*env)->CallStaticIntMethod(env, p_sys->media_codec_list_class,
 427                                                  p_sys->get_codec_count);
 428     jobject codec_name = NULL;
 429
 430     for (int i = 0; i < num_codecs; i++) {
 431         jobject codec_capabilities = NULL;
 432         jobject profile_levels = NULL;
 433         jobject info = NULL;
 434         jobject name = NULL;
 435         jobject types = NULL;
 436         jsize name_len = 0;
 437         int profile_levels_len = 0, num_types = 0;
 438         const char *name_ptr = NULL;
 439         bool found = false;
 440
 441         info = (*env)->CallStaticObjectMethod(env, p_sys->media_codec_list_class,
 442                                               p_sys->get_codec_info_at, i);
 443         if ((*env)->CallBooleanMethod(env, info, p_sys->is_encoder))
 444             goto loopclean;
 445
 446         codec_capabilities = (*env)->CallObjectMethod(env, info, p_sys->get_capabilities_for_type,
 447                                                       (*env)->NewStringUTF(env, mime));
 448         if (CHECK_EXCEPTION()) {
 449             msg_Warn(p_dec, "Exception occurred in MediaCodecInfo.getCapabilitiesForType");
 450             goto loopclean;
 451         } else if (codec_capabilities) {
 452             profile_levels = (*env)->GetObjectField(env, codec_capabilities, p_sys->profile_levels_field);
 453             if (profile_levels)
 454                 profile_levels_len = (*env)->GetArrayLength(env, profile_levels);
 455         }
 456         msg_Dbg(p_dec, "Number of profile levels: %d", profile_levels_len);
 457
 458         types = (*env)->CallObjectMethod(env, info, p_sys->get_supported_types);
 459         num_types = (*env)->GetArrayLength(env, types);
 460         name = (*env)->CallObjectMethod(env, info, p_sys->get_name);
 461         name_len = (*env)->GetStringUTFLength(env, name);
 462         name_ptr = (*env)->GetStringUTFChars(env, name, NULL);
 463         found = false;
 464
 465         if (codec_is_blacklisted( name_ptr, name_len))
 466             goto loopclean;
 467         for (int j = 0; j < num_types && !found; j++) {
 468             jobject type = (*env)->GetObjectArrayElement(env, types, j);
 469             if (!jstrcmp(env, type, mime)) {
 470                 /* The mime type is matching for this component. We
 471                    now check if the capabilities of the codec is
 472                    matching the video format. */
 473                 if (p_dec->fmt_in.i_codec == VLC_CODEC_H264 && fmt_profile) {
 474                     /* This decoder doesn't expose its profiles and is high
 475                      * profile capable */
 476                     if (!strncmp(name_ptr, "OMX.LUMEVideoDecoder", __MIN(20, name_len)))
 477                         found = true;
 478
 479                     for (int i = 0; i < profile_levels_len && !found; ++i) {
 480                         jobject profile_level = (*env)->GetObjectArrayElement(env, profile_levels, i);
 481
 482                         int omx_profile = (*env)->GetIntField(env, profile_level, p_sys->profile_field);
 483                         size_t codec_profile = convert_omx_to_profile_idc(omx_profile);
 484                         (*env)->DeleteLocalRef(env, profile_level);
 485                         if (codec_profile != fmt_profile)
 486                             continue;
 487                         /* Some encoders set the level too high, thus we ignore it for the moment.
 488                            We could try to guess the actual profile based on the resolution. */
 489                         found = true;
 490                     }
 491                 }
 492                 else
 493                     found = true;
 494             }
 495             (*env)->DeleteLocalRef(env, type);
 496         }
 497         if (found) {
 498             msg_Dbg(p_dec, "using %.*s", name_len, name_ptr);
 499             p_sys->name = malloc(name_len + 1);
 500             memcpy(p_sys->name, name_ptr, name_len);
 501             p_sys->name[name_len] = '\0';
 502             codec_name = name;
 503         }
 504 loopclean:
 505         if (name)
 506             (*env)->ReleaseStringUTFChars(env, name, name_ptr);
 507         if (profile_levels)
 508             (*env)->DeleteLocalRef(env, profile_levels);
 509         if (types)
 510             (*env)->DeleteLocalRef(env, types);
 511         if (codec_capabilities)
 512             (*env)->DeleteLocalRef(env, codec_capabilities);
 513         if (info)
 514             (*env)->DeleteLocalRef(env, info);
 515         if (found)
 516             break;
 517     }
 518
 519     if (!codec_name) {
 520         msg_Dbg(p_dec, "No suitable codec matching %s was found", mime);
 521         goto error;
 522     }
 523
 524     // This method doesn't handle errors nicely, it crashes if the codec isn't found.
 525     // (The same goes for createDecoderByType.) This is fixed in latest AOSP and in 4.2,
 526     // but not in 4.1 devices.
 527     p_sys->codec = (*env)->CallStaticObjectMethod(env, p_sys->media_codec_class,
 528                                                   p_sys->create_by_codec_name, codec_name);
 529     if (CHECK_EXCEPTION()) {
 530         msg_Warn(p_dec, "Exception occurred in MediaCodec.createByCodecName.");
 531         goto error;
 532     }
 533     p_sys->allocated = true;
 534     p_sys->codec = (*env)->NewGlobalRef(env, p_sys->codec);
 535
 536     jobject format = (*env)->CallStaticObjectMethod(env, p_sys->media_format_class,
 537                          p_sys->create_video_format, (*env)->NewStringUTF(env, mime),
 538                          p_dec->fmt_in.video.i_width, p_dec->fmt_in.video.i_height);
 539
 540     if (p_dec->fmt_in.i_extra) {
 541         // Allocate a byte buffer via allocateDirect in java instead of NewDirectByteBuffer,
 542         // since the latter doesn't allocate storage of its own, and we don't know how long
 543         // the codec uses the buffer.
 544         int buf_size = p_dec->fmt_in.i_extra + 20;
 545         jobject bytebuf = (*env)->CallStaticObjectMethod(env, p_sys->byte_buffer_class,
 546                                                          p_sys->allocate_direct, buf_size);
 547         uint32_t size = p_dec->fmt_in.i_extra;
 548         uint8_t *ptr = (*env)->GetDirectBufferAddress(env, bytebuf);
 549         if (p_dec->fmt_in.i_codec == VLC_CODEC_H264 && ((uint8_t*)p_dec->fmt_in.p_extra)[0] == 1) {
 550             convert_sps_pps(p_dec, p_dec->fmt_in.p_extra, p_dec->fmt_in.i_extra,
 551                             ptr, buf_size,
 552                             &size, &p_sys->nal_size);
 553         } else if (p_dec->fmt_in.i_codec == VLC_CODEC_HEVC) {
 554             convert_hevc_nal_units(p_dec, p_dec->fmt_in.p_extra,
 555                                    p_dec->fmt_in.i_extra, ptr, buf_size,
 556                                    &size, &p_sys->nal_size);
 557         } else {
 558             memcpy(ptr, p_dec->fmt_in.p_extra, size);
 559         }
 560         (*env)->CallObjectMethod(env, bytebuf, p_sys->limit, size);
 561         (*env)->CallVoidMethod(env, format, p_sys->set_bytebuffer,
 562                                (*env)->NewStringUTF(env, "csd-0"), bytebuf);
 563         (*env)->DeleteLocalRef(env, bytebuf);
 564     }
 565
 566     /* If the VideoPlayerActivity is not started, MediaCodec opaque
 567        direct rendering should be disabled since no surface will be
 568        attached to the JNI. */
 569     p_sys->direct_rendering = jni_IsVideoPlayerActivityCreated() && var_InheritBool(p_dec, CFG_PREFIX "dr");
 570
 571     /* There is no way to rotate the video using direct rendering (and using a
 572      * SurfaceView) before  API 21 (Lollipop). Therefore, we deactivate direct
 573      * rendering if video doesn't have a normal rotation and if
 574      * get_input_buffer method is not present (This method exists since API
 575      * 21). */
 576     if (p_sys->direct_rendering
 577         && p_dec->fmt_in.video.orientation != ORIENT_NORMAL
 578         && !p_sys->get_input_buffer)
 579         p_sys->direct_rendering = false;
 580
 581     if (p_sys->direct_rendering) {
 582         if (p_dec->fmt_in.video.orientation != ORIENT_NORMAL) {
 583             int i_angle;
 584
 585             switch (p_dec->fmt_in.video.orientation) {
 586                 case ORIENT_ROTATED_90:
 587                     i_angle = 90;
 588                     break;
 589                 case ORIENT_ROTATED_180:
 590                     i_angle = 180;
 591                     break;
 592                 case ORIENT_ROTATED_270:
 593                     i_angle = 270;
 594                     break;
 595                 default:
 596                     i_angle = 0;
 597             }
 598             (*env)->CallVoidMethod(env, format, p_sys->set_integer,
 599                                    (*env)->NewStringUTF(env, "rotation-degrees"),
 600                                    i_angle);
 601         }
 602
 603         jobject surf = jni_LockAndGetAndroidJavaSurface();
 604         if (surf) {
 605             // Configure MediaCodec with the Android surface.
 606             (*env)->CallVoidMethod(env, p_sys->codec, p_sys->configure, format, surf, NULL, 0);
 607             if (CHECK_EXCEPTION()) {
 608                 msg_Warn(p_dec, "Exception occurred in MediaCodec.configure with an output surface.");
 609                 jni_UnlockAndroidSurface();
 610                 goto error;
 611             }
 612             p_dec->fmt_out.i_codec = VLC_CODEC_ANDROID_OPAQUE;
 613         } else {
 614             msg_Warn(p_dec, "Failed to get the Android Surface, disabling direct rendering.");
 615             p_sys->direct_rendering = false;
 616         }
 617         jni_UnlockAndroidSurface();
 618     }
 619     if (!p_sys->direct_rendering) {
 620         (*env)->CallVoidMethod(env, p_sys->codec, p_sys->configure, format, NULL, NULL, 0);
 621         if (CHECK_EXCEPTION()) {
 622             msg_Warn(p_dec, "Exception occurred in MediaCodec.configure");
 623             goto error;
 624         }
 625     }
 626
 627     (*env)->CallVoidMethod(env, p_sys->codec, p_sys->start);
 628     if (CHECK_EXCEPTION()) {
 629         msg_Warn(p_dec, "Exception occurred in MediaCodec.start");
 630         goto error;
 631     }
 632     p_sys->started = true;
 633
 634     if (p_sys->get_input_buffers && p_sys->get_output_buffers) {
 635         p_sys->input_buffers = (*env)->CallObjectMethod(env, p_sys->codec, p_sys->get_input_buffers);
 636         if (CHECK_EXCEPTION()) {
 637             msg_Err(p_dec, "Exception in MediaCodec.getInputBuffers (OpenDecoder)");
 638             goto error;
 639         }
 640         p_sys->output_buffers = (*env)->CallObjectMethod(env, p_sys->codec, p_sys->get_output_buffers);
 641         if (CHECK_EXCEPTION()) {
 642             msg_Err(p_dec, "Exception in MediaCodec.getOutputBuffers (OpenDecoder)");
 643             goto error;
 644         }
 645         p_sys->input_buffers = (*env)->NewGlobalRef(env, p_sys->input_buffers);
 646         p_sys->output_buffers = (*env)->NewGlobalRef(env, p_sys->output_buffers);
 647     }
 648     p_sys->buffer_info = (*env)->NewObject(env, p_sys->buffer_info_class, p_sys->buffer_info_ctor);
 649     p_sys->buffer_info = (*env)->NewGlobalRef(env, p_sys->buffer_info);
 650     (*env)->DeleteLocalRef(env, format);
 651
 652     jni_detach_thread();
 653
 654     const int timestamp_fifo_size = 32;
 655     p_sys->timestamp_fifo = timestamp_FifoNew(timestamp_fifo_size);
 656     if (!p_sys->timestamp_fifo)
 657         goto error;
 658
 659     return VLC_SUCCESS;
 660
 661  error:
 662     jni_detach_thread();
 663     CloseDecoder(p_this);
 664     return VLC_EGENERIC;
 665 }
 666
 667 static void CloseDecoder(vlc_object_t *p_this)
 668 {
 669     decoder_t *p_dec = (decoder_t *)p_this;
 670     decoder_sys_t *p_sys = p_dec->p_sys;
 671     JNIEnv *env = NULL;
 672
 673     if (!p_sys)
 674         return;
 675
 676     /* Invalidate all pictures that are currently in flight in order
 677      * to prevent the vout from using destroyed output buffers. */
 678     if (p_sys->direct_rendering)
 679         InvalidateAllPictures(p_dec);
 680     jni_attach_thread(&env, THREAD_NAME);
 681     if (p_sys->input_buffers)
 682         (*env)->DeleteGlobalRef(env, p_sys->input_buffers);
 683     if (p_sys->output_buffers)
 684         (*env)->DeleteGlobalRef(env, p_sys->output_buffers);
 685     if (p_sys->codec) {
 686         if (p_sys->started)
 687         {
 688             (*env)->CallVoidMethod(env, p_sys->codec, p_sys->stop);
 689             if (CHECK_EXCEPTION())
 690                 msg_Err(p_dec, "Exception in MediaCodec.stop");
 691         }
 692         if (p_sys->allocated)
 693         {
 694             (*env)->CallVoidMethod(env, p_sys->codec, p_sys->release);
 695             if (CHECK_EXCEPTION())
 696                 msg_Err(p_dec, "Exception in MediaCodec.release");
 697         }
 698         (*env)->DeleteGlobalRef(env, p_sys->codec);
 699     }
 700     if (p_sys->buffer_info)
 701         (*env)->DeleteGlobalRef(env, p_sys->buffer_info);
 702     jni_detach_thread();
 703
 704     free(p_sys->name);
 705     ArchitectureSpecificCopyHooksDestroy(p_sys->pixel_format, &p_sys->architecture_specific_data);
 706     free(p_sys->pp_inflight_pictures);
 707     if (p_sys->timestamp_fifo)
 708         timestamp_FifoRelease(p_sys->timestamp_fifo);
 709     free(p_sys);
 710 }
 711
 712 /*****************************************************************************
 713  * ReleaseOutputBuffer
 714  *****************************************************************************/
 715 static int ReleaseOutputBuffer(decoder_t *p_dec, JNIEnv *env, int i_index,
 716                                bool b_render)
 717 {
 718     decoder_sys_t *p_sys = p_dec->p_sys;
 719
 720     (*env)->CallVoidMethod(env, p_sys->codec, p_sys->release_output_buffer,
 721                            i_index, b_render);
 722     if (CHECK_EXCEPTION()) {
 723         msg_Err(p_dec, "Exception in MediaCodec.releaseOutputBuffer");
 724         return -1;
 725     }
 726     return 0;
 727 }
 728
 729 /*****************************************************************************
 730  * vout callbacks
 731  *****************************************************************************/
 732 static void UnlockPicture(picture_t* p_pic, bool b_render)
 733 {
 734     picture_sys_t *p_picsys = p_pic->p_sys;
 735     decoder_t *p_dec = p_picsys->priv.hw.p_dec;
 736
 737     if (!p_picsys->priv.hw.b_valid)
 738         return;
 739
 740     vlc_mutex_lock(get_android_opaque_mutex());
 741
 742     /* Picture might have been invalidated while waiting on the mutex. */
 743     if (!p_picsys->priv.hw.b_valid) {
 744         vlc_mutex_unlock(get_android_opaque_mutex());
 745         return;
 746     }
 747
 748     uint32_t i_index = p_picsys->priv.hw.i_index;
 749     InsertInflightPicture(p_dec, NULL, i_index);
 750
 751     /* Release the MediaCodec buffer. */
 752     JNIEnv *env = NULL;
 753     jni_attach_thread(&env, THREAD_NAME);
 754     ReleaseOutputBuffer(p_dec, env, i_index, b_render);
 755     jni_detach_thread();
 756     p_picsys->priv.hw.b_valid = false;
 757
 758     vlc_mutex_unlock(get_android_opaque_mutex());
 759 }
 760
 761 static void InvalidateAllPictures(decoder_t *p_dec)
 762 {
 763     decoder_sys_t *p_sys = p_dec->p_sys;
 764
 765     vlc_mutex_lock(get_android_opaque_mutex());
 766
 767     for (unsigned int i = 0; i < p_sys->i_inflight_pictures; ++i) {
 768         picture_t *p_pic = p_sys->pp_inflight_pictures[i];
 769         if (p_pic) {
 770             p_pic->p_sys->priv.hw.b_valid = false;
 771             p_sys->pp_inflight_pictures[i] = NULL;
 772         }
 773     }
 774     vlc_mutex_unlock(get_android_opaque_mutex());
 775 }
 776
 777 static int InsertInflightPicture(decoder_t *p_dec, picture_t *p_pic,
 778                                  unsigned int i_index)
 779 {
 780     decoder_sys_t *p_sys = p_dec->p_sys;
 781
 782     if (i_index >= p_sys->i_inflight_pictures) {
 783         picture_t **pp_pics = realloc(p_sys->pp_inflight_pictures,
 784                                       (i_index + 1) * sizeof (picture_t *));
 785         if (!pp_pics)
 786             return -1;
 787         if (i_index - p_sys->i_inflight_pictures > 0)
 788             memset(&pp_pics[p_sys->i_inflight_pictures], 0,
 789                    (i_index - p_sys->i_inflight_pictures) * sizeof (picture_t *));
 790         p_sys->pp_inflight_pictures = pp_pics;
 791         p_sys->i_inflight_pictures = i_index + 1;
 792     }
 793     p_sys->pp_inflight_pictures[i_index] = p_pic;
 794     return 0;
 795 }
 796
 797 static int PutInput(decoder_t *p_dec, JNIEnv *env, block_t **pp_block, jlong timeout)
 798 {
 799     decoder_sys_t *p_sys = p_dec->p_sys;
 800     block_t *p_block = *pp_block;
 801     int index;
 802     jobject buf;
 803     jsize size;
 804     uint8_t *bufptr;
 805     struct H264ConvertState convert_state = { 0, 0 };
 806
 807     index = (*env)->CallIntMethod(env, p_sys->codec,
 808                                   p_sys->dequeue_input_buffer, timeout);
 809     if (CHECK_EXCEPTION()) {
 810         msg_Err(p_dec, "Exception occurred in MediaCodec.dequeueInputBuffer");
 811         return -1;
 812     }
 813     if (index < 0)
 814         return 0;
 815
 816     if (p_sys->get_input_buffers)
 817         buf = (*env)->GetObjectArrayElement(env, p_sys->input_buffers, index);
 818     else
 819         buf = (*env)->CallObjectMethod(env, p_sys->codec, p_sys->get_input_buffer, index);
 820     size = (*env)->GetDirectBufferCapacity(env, buf);
 821     bufptr = (*env)->GetDirectBufferAddress(env, buf);
 822     if (size < 0) {
 823         msg_Err(p_dec, "Java buffer has invalid size");
 824         return -1;
 825     }
 826     if ((size_t) size > p_block->i_buffer)
 827         size = p_block->i_buffer;
 828     memcpy(bufptr, p_block->p_buffer, size);
 829
 830     convert_h264_to_annexb(bufptr, size, p_sys->nal_size, &convert_state);
 831
 832     int64_t ts = p_block->i_pts;
 833     if (!ts && p_block->i_dts)
 834         ts = p_block->i_dts;
 835     timestamp_FifoPut(p_sys->timestamp_fifo, p_block->i_pts ? VLC_TS_INVALID : p_block->i_dts);
 836     (*env)->CallVoidMethod(env, p_sys->codec, p_sys->queue_input_buffer, index, 0, size, ts, 0);
 837     (*env)->DeleteLocalRef(env, buf);
 838     if (CHECK_EXCEPTION()) {
 839         msg_Err(p_dec, "Exception in MediaCodec.queueInputBuffer");
 840         return -1;
 841     }
 842     block_Release(p_block);
 843     *pp_block = NULL;
 844     p_sys->decoded = true;
 845
 846     return 0;
 847 }
 848
 849 static int GetOutput(decoder_t *p_dec, JNIEnv *env, picture_t **pp_pic, jlong timeout)
 850 {
 851     decoder_sys_t *p_sys = p_dec->p_sys;
 852     int index = (*env)->CallIntMethod(env, p_sys->codec, p_sys->dequeue_output_buffer,
 853                                       p_sys->buffer_info, timeout);
 854     if (CHECK_EXCEPTION()) {
 855         msg_Err(p_dec, "Exception in MediaCodec.dequeueOutputBuffer (GetOutput)");
 856         return -1;
 857     }
 858
 859     if (index >= 0) {
 860         if (!p_sys->pixel_format) {
 861             msg_Warn(p_dec, "Buffers returned before output format is set, dropping frame");
 862             return ReleaseOutputBuffer(p_dec, env, index, false);
 863         }
 864
 865         *pp_pic = decoder_NewPicture(p_dec);
 866         if (!*pp_pic) {
 867             msg_Warn(p_dec, "NewPicture failed");
 868             return ReleaseOutputBuffer(p_dec, env, index, false);
 869         }
 870         picture_t *p_pic = *pp_pic;
 871         /* If the oldest input block had no PTS, the timestamp
 872          * of the frame returned by MediaCodec might be wrong
 873          * so we overwrite it with the corresponding dts. */
 874         int64_t forced_ts = timestamp_FifoGet(p_sys->timestamp_fifo);
 875         if (forced_ts == VLC_TS_INVALID)
 876             p_pic->date = (*env)->GetLongField(env, p_sys->buffer_info, p_sys->pts_field);
 877         else
 878             p_pic->date = forced_ts;
 879
 880         if (p_sys->direct_rendering) {
 881             picture_sys_t *p_picsys = p_pic->p_sys;
 882             p_picsys->pf_lock_pic = NULL;
 883             p_picsys->pf_unlock_pic = UnlockPicture;
 884             p_picsys->priv.hw.p_dec = p_dec;
 885             p_picsys->priv.hw.i_index = index;
 886             p_picsys->priv.hw.b_valid = true;
 887
 888             vlc_mutex_lock(get_android_opaque_mutex());
 889             InsertInflightPicture(p_dec, p_pic, index);
 890             vlc_mutex_unlock(get_android_opaque_mutex());
 891         } else {
 892             jobject buf;
 893             if (p_sys->get_output_buffers)
 894                 buf = (*env)->GetObjectArrayElement(env, p_sys->output_buffers, index);
 895             else
 896                 buf = (*env)->CallObjectMethod(env, p_sys->codec,
 897                                                p_sys->get_output_buffer, index);
 898             //jsize buf_size = (*env)->GetDirectBufferCapacity(env, buf);
 899             uint8_t *ptr = (*env)->GetDirectBufferAddress(env, buf);
 900
 901             //int size = (*env)->GetIntField(env, p_sys->buffer_info, p_sys->size_field);
 902             int offset = (*env)->GetIntField(env, p_sys->buffer_info, p_sys->offset_field);
 903             ptr += offset; // Check the size parameter as well
 904
 905             unsigned int chroma_div;
 906             GetVlcChromaSizes(p_dec->fmt_out.i_codec, p_dec->fmt_out.video.i_width,
 907                               p_dec->fmt_out.video.i_height, NULL, NULL, &chroma_div);
 908             CopyOmxPicture(p_sys->pixel_format, p_pic, p_sys->slice_height, p_sys->stride,
 909                            ptr, chroma_div, &p_sys->architecture_specific_data);
 910             (*env)->CallVoidMethod(env, p_sys->codec, p_sys->release_output_buffer, index, false);
 911
 912             jthrowable exception = (*env)->ExceptionOccurred(env);
 913             if (exception != NULL) {
 914                 jclass illegalStateException = (*env)->FindClass(env, "java/lang/IllegalStateException");
 915                 if((*env)->IsInstanceOf(env, exception, illegalStateException)) {
 916                     msg_Err(p_dec, "Codec error (IllegalStateException) in MediaCodec.releaseOutputBuffer");
 917                     (*env)->ExceptionClear(env);
 918                     (*env)->DeleteLocalRef(env, illegalStateException);
 919                     (*env)->DeleteLocalRef(env, buf);
 920                     return -1;
 921                 }
 922             }
 923             (*env)->DeleteLocalRef(env, buf);
 924         }
 925     } else if (index == INFO_OUTPUT_BUFFERS_CHANGED) {
 926         msg_Dbg(p_dec, "output buffers changed");
 927         if (!p_sys->get_output_buffers)
 928             return 0;
 929         (*env)->DeleteGlobalRef(env, p_sys->output_buffers);
 930
 931         p_sys->output_buffers = (*env)->CallObjectMethod(env, p_sys->codec,
 932                                                          p_sys->get_output_buffers);
 933         if (CHECK_EXCEPTION()) {
 934             msg_Err(p_dec, "Exception in MediaCodec.getOutputBuffer (GetOutput)");
 935             p_sys->output_buffers = NULL;
 936             return -1;
 937         }
 938
 939         p_sys->output_buffers = (*env)->NewGlobalRef(env, p_sys->output_buffers);
 940     } else if (index == INFO_OUTPUT_FORMAT_CHANGED) {
 941         jobject format = (*env)->CallObjectMethod(env, p_sys->codec, p_sys->get_output_format);
 942         if (CHECK_EXCEPTION()) {
 943             msg_Err(p_dec, "Exception in MediaCodec.getOutputFormat (GetOutput)");
 944             return -1;
 945         }
 946
 947         jobject format_string = (*env)->CallObjectMethod(env, format, p_sys->tostring);
 948
 949         jsize format_len = (*env)->GetStringUTFLength(env, format_string);
 950         const char *format_ptr = (*env)->GetStringUTFChars(env, format_string, NULL);
 951         msg_Dbg(p_dec, "output format changed: %.*s", format_len, format_ptr);
 952         (*env)->ReleaseStringUTFChars(env, format_string, format_ptr);
 953
 954         ArchitectureSpecificCopyHooksDestroy(p_sys->pixel_format, &p_sys->architecture_specific_data);
 955
 956         int width           = GET_INTEGER(format, "width");
 957         int height          = GET_INTEGER(format, "height");
 958         p_sys->stride       = GET_INTEGER(format, "stride");
 959         p_sys->slice_height = GET_INTEGER(format, "slice-height");
 960         p_sys->pixel_format = GET_INTEGER(format, "color-format");
 961         int crop_left       = GET_INTEGER(format, "crop-left");
 962         int crop_top        = GET_INTEGER(format, "crop-top");
 963         int crop_right      = GET_INTEGER(format, "crop-right");
 964         int crop_bottom     = GET_INTEGER(format, "crop-bottom");
 965
 966         const char *name = "unknown";
 967         if (!p_sys->direct_rendering) {
 968             if (!GetVlcChromaFormat(p_sys->pixel_format,
 969                                     &p_dec->fmt_out.i_codec, &name)) {
 970                 msg_Err(p_dec, "color-format not recognized");
 971                 return -1;
 972             }
 973         }
 974
 975         msg_Err(p_dec, "output: %d %s, %dx%d stride %d %d, crop %d %d %d %d",
 976                 p_sys->pixel_format, name, width, height, p_sys->stride, p_sys->slice_height,
 977                 crop_left, crop_top, crop_right, crop_bottom);
 978
 979         p_dec->fmt_out.video.i_width = crop_right + 1 - crop_left;
 980         p_dec->fmt_out.video.i_height = crop_bottom + 1 - crop_top;
 981         if (p_dec->fmt_out.video.i_width <= 1
 982             || p_dec->fmt_out.video.i_height <= 1) {
 983             p_dec->fmt_out.video.i_width = width;
 984             p_dec->fmt_out.video.i_height = height;
 985         }
 986         p_dec->fmt_out.video.i_visible_width = p_dec->fmt_out.video.i_width;
 987         p_dec->fmt_out.video.i_visible_height = p_dec->fmt_out.video.i_height;
 988
 989         if (p_sys->stride <= 0)
 990             p_sys->stride = width;
 991         if (p_sys->slice_height <= 0)
 992             p_sys->slice_height = height;
 993         CHECK_EXCEPTION();
 994
 995         ArchitectureSpecificCopyHooks(p_dec, p_sys->pixel_format, p_sys->slice_height,
 996                                       p_sys->stride, &p_sys->architecture_specific_data);
 997         if (p_sys->pixel_format == OMX_TI_COLOR_FormatYUV420PackedSemiPlanar)
 998             p_sys->slice_height -= crop_top/2;
 999         if (IgnoreOmxDecoderPadding(p_sys->name)) {
1000             p_sys->slice_height = 0;
1001             p_sys->stride = p_dec->fmt_out.video.i_width;
1002         }
1003     }
1004     return 0;
1005 }
1006
1007 static picture_t *DecodeVideo(decoder_t *p_dec, block_t **pp_block)
1008 {
1009     decoder_sys_t *p_sys = p_dec->p_sys;
1010     picture_t *p_pic = NULL;
1011     JNIEnv *env = NULL;
1012
1013     if (!pp_block || !*pp_block)
1014         return NULL;
1015
1016     if (p_sys->error_state)
1017         goto endclean;
1018
1019     jni_attach_thread(&env, THREAD_NAME);
1020     if (!env)
1021         goto endclean;
1022
1023     if ((*pp_block)->i_flags & (BLOCK_FLAG_DISCONTINUITY|BLOCK_FLAG_CORRUPTED)) {
1024         block_Release(*pp_block);
1025         *pp_block = NULL;
1026         timestamp_FifoEmpty(p_sys->timestamp_fifo);
1027         if (p_sys->decoded) {
1028             /* Invalidate all pictures that are currently in flight
1029              * since flushing make all previous indices returned by
1030              * MediaCodec invalid. */
1031             if (p_sys->direct_rendering)
1032                 InvalidateAllPictures(p_dec);
1033
1034             (*env)->CallVoidMethod(env, p_sys->codec, p_sys->flush);
1035             if (CHECK_EXCEPTION()) {
1036                 msg_Warn(p_dec, "Exception occurred in MediaCodec.flush");
1037                 p_sys->error_state = true;
1038             }
1039         }
1040         p_sys->decoded = false;
1041         goto endclean;
1042     }
1043
1044     /* Use the aspect ratio provided by the input (ie read from packetizer).
1045      * Don't check the current value of the aspect ratio in fmt_out, since we
1046      * want to allow changes in it to propagate. */
1047     if (p_dec->fmt_in.video.i_sar_num != 0 && p_dec->fmt_in.video.i_sar_den != 0) {
1048         p_dec->fmt_out.video.i_sar_num = p_dec->fmt_in.video.i_sar_num;
1049         p_dec->fmt_out.video.i_sar_den = p_dec->fmt_in.video.i_sar_den;
1050     }
1051
1052     jlong timeout = 0;
1053     const int max_polling_attempts = 50;
1054     int attempts = 0;
1055     /* return when pp_block is processed */
1056     while (*pp_block != NULL) {
1057         if (*pp_block != NULL && PutInput(p_dec, env, pp_block, (jlong) 0) != 0) {
1058             p_sys->error_state = true;
1059             break;
1060         }
1061
1062         if (p_pic == NULL && GetOutput(p_dec, env, &p_pic, timeout) != 0) {
1063             p_sys->error_state = true;
1064             break;
1065         }
1066
1067         if (p_pic == NULL && *pp_block != NULL) {
1068             timeout = 30 * 1000;
1069             ++attempts;
1070             /* With opaque DR the output buffers are released by the
1071                vout therefore we implement a timeout for polling in
1072                order to avoid being indefinitely stalled in this loop. */
1073             if (p_sys->direct_rendering && attempts == max_polling_attempts) {
1074                 p_pic = decoder_NewPicture(p_dec);
1075                 if (p_pic) {
1076                     p_pic->date = VLC_TS_INVALID;
1077                     picture_sys_t *p_picsys = p_pic->p_sys;
1078                     p_picsys->pf_lock_pic = NULL;
1079                     p_picsys->pf_unlock_pic = NULL;
1080                     p_picsys->priv.hw.p_dec = NULL;
1081                     p_picsys->priv.hw.i_index = -1;
1082                     p_picsys->priv.hw.b_valid = false;
1083                 }
1084                 else {
1085                     /* If we cannot return a picture we must free the
1086                        block since the decoder will proceed with the
1087                        next block. */
1088                     block_Release(*pp_block);
1089                     *pp_block = NULL;
1090                 }
1091             }
1092         }
1093     }
1094
1095 endclean:
1096     if (p_sys->error_state) {
1097         if( pp_block && *pp_block )
1098         {
1099             block_Release(*pp_block);
1100             *pp_block = NULL;
1101         }
1102         if (p_pic)
1103             picture_Release(p_pic);
1104         p_pic = NULL;
1105
1106         if (!p_sys->error_event_sent) {
1107             /* Signal the error to the Java. */
1108             jni_EventHardwareAccelerationError();
1109             p_sys->error_event_sent = true;
1110         }
1111     }
1112     if (env != NULL)
1113         jni_detach_thread();
1114
1115     return p_pic;
1116 }