// // Created by frank on 2018/2/1. // #include "libavcodec/avcodec.h" #include "libavformat/avformat.h" #include "libswscale/swscale.h" #include #include #include #include #include #include #include "ffmpeg_jni_define.h" #define TAG "VideoPlayer" float play_rate = 1; long duration = 0; VIDEO_PLAYER_FUNC(jint, play, jstring filePath, jobject surface) { const char *file_name = (*env)->GetStringUTFChars(env, filePath, JNI_FALSE); LOGE(TAG, "open file:%s\n", file_name); av_register_all(); AVFormatContext *pFormatCtx = avformat_alloc_context(); if (avformat_open_input(&pFormatCtx, file_name, NULL, NULL) != 0) { LOGE(TAG, "Couldn't open file:%s\n", file_name); return -1; } if (avformat_find_stream_info(pFormatCtx, NULL) < 0) { LOGE(TAG, "Couldn't find stream information."); return -1; } int videoStream = -1, i; for (i = 0; i < pFormatCtx->nb_streams; i++) { if (pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_VIDEO && videoStream < 0) { videoStream = i; } } if (videoStream == -1) { LOGE(TAG, "couldn't find a video stream."); return -1; } //get duration of video if (pFormatCtx->duration != AV_NOPTS_VALUE) { duration = (long) (pFormatCtx->duration / AV_TIME_BASE); LOGE(TAG, "duration==%ld", duration); } AVCodecContext *pCodecCtx = pFormatCtx->streams[videoStream]->codec; AVCodec *pCodec = avcodec_find_decoder(pCodecCtx->codec_id); if (pCodec == NULL) { LOGE(TAG, "couldn't find Codec."); return -1; } if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0) { LOGE(TAG, "Couldn't open codec."); return -1; } ANativeWindow *nativeWindow = ANativeWindow_fromSurface(env, surface); int videoWidth = pCodecCtx->width; int videoHeight = pCodecCtx->height; ANativeWindow_setBuffersGeometry(nativeWindow, videoWidth, videoHeight, WINDOW_FORMAT_RGBA_8888); ANativeWindow_Buffer windowBuffer; if (avcodec_open2(pCodecCtx, pCodec, NULL) < 0) { LOGE(TAG, "Couldn't open codec."); return -1; } AVFrame *pFrame = av_frame_alloc(); AVFrame *pFrameRGBA = av_frame_alloc(); if (pFrameRGBA == NULL || pFrame == NULL) { LOGE(TAG, "Couldn't allocate video frame."); return -1; } int numBytes = av_image_get_buffer_size(AV_PIX_FMT_RGBA, pCodecCtx->width, pCodecCtx->height, 1); uint8_t *buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t)); av_image_fill_arrays(pFrameRGBA->data, pFrameRGBA->linesize, buffer, AV_PIX_FMT_RGBA, pCodecCtx->width, pCodecCtx->height, 1); struct SwsContext *sws_ctx = sws_getContext(pCodecCtx->width, pCodecCtx->height, pCodecCtx->pix_fmt, pCodecCtx->width, pCodecCtx->height, AV_PIX_FMT_RGBA, SWS_BILINEAR, NULL, NULL, NULL); int frameFinished; AVPacket packet; while (av_read_frame(pFormatCtx, &packet) >= 0) { if (packet.stream_index == videoStream) { avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet); if (frameFinished) { // lock native window ANativeWindow_lock(nativeWindow, &windowBuffer, 0); sws_scale(sws_ctx, (uint8_t const *const *) pFrame->data, pFrame->linesize, 0, pCodecCtx->height, pFrameRGBA->data, pFrameRGBA->linesize); uint8_t *dst = windowBuffer.bits; int dstStride = windowBuffer.stride * 4; uint8_t *src = pFrameRGBA->data[0]; int srcStride = pFrameRGBA->linesize[0]; int h; for (h = 0; h < videoHeight; h++) { memcpy(dst + h * dstStride, src + h * srcStride, (size_t) srcStride); } ANativeWindow_unlockAndPost(nativeWindow); } usleep((unsigned long) (1000 * 40 * play_rate)); } av_packet_unref(&packet); } av_free(buffer); av_free(pFrameRGBA); av_free(pFrame); avcodec_close(pCodecCtx); avformat_close_input(&pFormatCtx); return 0; } VIDEO_PLAYER_FUNC(void, setPlayRate, jfloat playRate) { play_rate = playRate; } VIDEO_PLAYER_FUNC(jint, getDuration) { return duration; }