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c97ea1701a
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//
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// Created by frank on 2018/2/1.
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//
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#include <android/native_window.h> |
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#include <android/native_window_jni.h> |
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#include <stdio.h> |
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#include <unistd.h> |
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#ifdef __cplusplus |
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extern "C" { |
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#endif |
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#include "libavcodec/avcodec.h" |
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#include "libavformat/avformat.h" |
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#include "libswscale/swscale.h" |
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#include "libavutil/imgutils.h" |
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#include "ffmpeg_jni_define.h" |
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#define TAG "VideoPlayer" |
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float play_rate = 1; |
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long duration = 0; |
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VIDEO_PLAYER_FUNC(jint, play, jstring filePath, jobject surface) { |
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const char *file_name = env->GetStringUTFChars( filePath, JNI_FALSE); |
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LOGE(TAG, "open file:%s\n", file_name); |
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av_register_all(); |
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AVFormatContext *pFormatCtx = avformat_alloc_context(); |
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if (avformat_open_input(&pFormatCtx, file_name, nullptr, nullptr) != 0) { |
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LOGE(TAG, "Couldn't open file:%s\n", file_name); |
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return -1; |
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} |
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if (avformat_find_stream_info(pFormatCtx, nullptr) < 0) { |
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LOGE(TAG, "Couldn't find stream information."); |
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return -1; |
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} |
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int videoStream = -1, i; |
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for (i = 0; i < pFormatCtx->nb_streams; i++) { |
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if (pFormatCtx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO |
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&& videoStream < 0) { |
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videoStream = i; |
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} |
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} |
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if (videoStream == -1) { |
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LOGE(TAG, "couldn't find a video stream."); |
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return -1; |
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} |
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//get duration of video
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if (pFormatCtx->duration != AV_NOPTS_VALUE) { |
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duration = (long) (pFormatCtx->duration / AV_TIME_BASE); |
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LOGE(TAG, "duration==%ld", duration); |
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} |
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AVCodecContext *pCodecCtx = pFormatCtx->streams[videoStream]->codec; |
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AVCodec *pCodec = avcodec_find_decoder(pCodecCtx->codec_id); |
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if (pCodec == nullptr) { |
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LOGE(TAG, "couldn't find Codec."); |
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return -1; |
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} |
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if (avcodec_open2(pCodecCtx, pCodec, nullptr) < 0) { |
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LOGE(TAG, "Couldn't open codec."); |
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return -1; |
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} |
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ANativeWindow *nativeWindow = ANativeWindow_fromSurface(env, surface); |
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int videoWidth = pCodecCtx->width; |
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int videoHeight = pCodecCtx->height; |
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ANativeWindow_setBuffersGeometry(nativeWindow, videoWidth, videoHeight, |
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WINDOW_FORMAT_RGBA_8888); |
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ANativeWindow_Buffer windowBuffer; |
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if (avcodec_open2(pCodecCtx, pCodec, nullptr) < 0) { |
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LOGE(TAG, "Couldn't open codec."); |
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return -1; |
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} |
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AVFrame *pFrame = av_frame_alloc(); |
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AVFrame *pFrameRGBA = av_frame_alloc(); |
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if (pFrameRGBA == nullptr || pFrame == nullptr) { |
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LOGE(TAG, "Couldn't allocate video frame."); |
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return -1; |
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} |
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int numBytes = av_image_get_buffer_size(AV_PIX_FMT_RGBA, pCodecCtx->width, pCodecCtx->height, |
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1); |
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uint8_t *buffer = (uint8_t *) av_malloc(numBytes * sizeof(uint8_t)); |
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av_image_fill_arrays(pFrameRGBA->data, pFrameRGBA->linesize, buffer, AV_PIX_FMT_RGBA, |
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pCodecCtx->width, pCodecCtx->height, 1); |
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struct SwsContext *sws_ctx = sws_getContext(pCodecCtx->width, |
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pCodecCtx->height, |
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pCodecCtx->pix_fmt, |
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pCodecCtx->width, |
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pCodecCtx->height, |
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AV_PIX_FMT_RGBA, |
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SWS_BILINEAR, |
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nullptr, |
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nullptr, |
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nullptr); |
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int frameFinished; |
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AVPacket packet; |
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while (av_read_frame(pFormatCtx, &packet) >= 0) { |
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if (packet.stream_index == videoStream) { |
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avcodec_decode_video2(pCodecCtx, pFrame, &frameFinished, &packet); |
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if (frameFinished) { |
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// lock native window
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ANativeWindow_lock(nativeWindow, &windowBuffer, nullptr); |
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sws_scale(sws_ctx, (uint8_t const *const *) pFrame->data, |
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pFrame->linesize, 0, pCodecCtx->height, |
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pFrameRGBA->data, pFrameRGBA->linesize); |
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uint8_t *dst = static_cast<uint8_t *>(windowBuffer.bits); |
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int dstStride = windowBuffer.stride * 4; |
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uint8_t *src = pFrameRGBA->data[0]; |
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int srcStride = pFrameRGBA->linesize[0]; |
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int h; |
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for (h = 0; h < videoHeight; h++) { |
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memcpy(dst + h * dstStride, src + h * srcStride, (size_t) srcStride); |
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} |
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ANativeWindow_unlockAndPost(nativeWindow); |
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} |
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usleep((unsigned long) (1000 * 40 * play_rate)); |
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} |
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av_packet_unref(&packet); |
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} |
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av_free(buffer); |
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av_free(pFrameRGBA); |
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av_free(pFrame); |
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avcodec_free_context(&pCodecCtx); |
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avformat_close_input(&pFormatCtx); |
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return 0; |
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} |
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VIDEO_PLAYER_FUNC(void, setPlayRate, jfloat playRate) { |
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play_rate = playRate; |
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} |
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VIDEO_PLAYER_FUNC(jint, getDuration) { |
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return duration; |
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} |
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#ifdef __cplusplus |
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} |
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#endif |
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