ijkPlayer

seek操作

+ - 清空包队列- 设置时钟clock- send FFP_MSG_SEEK_COMPLETE message.

ffp_seek_to_l

post_event--J4AC_IjkMediaPlayer__postEventFromNative

message_loop_n

if support hw

video_refresh

reek_req

ijkplayer_android.c

ijkmp_android_create

ffp_queue_picture

ffpipienode_android_mediacodec_vcdec.c

...

主体是一个循环里轮询是否需要更新视频帧video_refresh 函数计算同步剩余时间和显示

FFP_REQ_SEEK

创建解码器流程

ijksdl_codec_android_mediacodec_java.c acodec-opaque_class = &g_amediacodec_class; acodec-func_delete = SDL_AMediaCodecJava_delete; acodec-func_configure = NULL; acodec-func_configure_surface = SDL_AMediaCodecJava_configure_surface; acodec-func_start = SDL_AMediaCodecJava_start; acodec-func_stop = SDL_AMediaCodecJava_stop; acodec-func_flush = SDL_AMediaCodecJava_flush;//....

ijkmp_get_msg将AVMessage(来自ffplay) 转为我们的自定义message.

解码线程(硬解)

if (pkt == &flush_pkt) q-serial++;

ijksdl_vout_overlay_ffmpeg.c

SDL_VoutAndroid_releaseBufferProxyP

ff_ffplay.c

ffpipienode_android_mediacodec_vcdec.c#func_run_sync

软解也有对应的func_run_sync .主要循环调用:

实际read_thread的for循环有更多处理.主要与包队列有关.包括pause/resume/seek等操作.

ffpipeline_android.c

IJKFF_Pipeline *ffpipeline_create_from_android(FFPlayer *ffp) pipeline-func_destroy = func_destroy; pipeline-func_open_video_decoder = func_open_video_decoder; pipeline-func_open_audio_output = func_open_audio_output;

if (lastvp-serial != vp-serial && !redisplay) is-frame_timer = av_gettime_relative() / 1000000.0;

ijk_player.c

IjkMediaPlayer_native_setup

if (vp-serial != is-videoq.serial) { frame_queue_next(&is-pictq); redisplay = 0; goto retry; }

把解码后的帧放入帧队列.在这之前有一个很重要的处理:SDL_VoutFillFrameYUVOverlay

packet_queue_flush(&is-subtitleq);packet_queue_put

ff_ffplay.c#read_thread#seek_req

接收线程

消息系统

seek 操作示例

read_thread

av_usleep((int)(int64_t)(remaining_time * 1000000.0));

ijksdl_vout_android_nativewindow.c

func_display_overlay

stream_seek

is-seek_pos = pos; is-seek_rel = rel; is-seek_req = 1; SDL_CondSignal(is-continue_read_thread);

输入线程EnqueueBuffer

ffp_toggle_buffering

ff_ffplay.c#video_refresh

video_refresh_thread

关于flush_pkt: av_init_packet(&flush_pkt); flush_pkt.data = (uint8_t *)&flush_pkt;关于serial: if (pkt == &flush_pkt) q-serial++; pkt1-serial = q-serial;

ijkplayer_jni.c

stream_open

packet_queue_put

渲染线程

ffpipenode_androdi_mediacodec_vdec.c#enqueue_thread_func

#stream_component_opencall when stream available

接口

何时更新 frame_timer?