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• Play video using FFmpeg library in androidNDK

  13 mai 2020, par manikanta veeravalli

  I have all required .so libraries and header files to play a video. I want to play video from the Raw folder. I am struck at CPP code. Unable to pass a video file path to CPP code. The following is my native-lib.cpp code

  



   const char *file = env->GetStringUTFChars(path, 0);
if (file == NULL) {
    printf("The file is a null object.");
}

av_register_all();
int ret = 0;
char errbuf[256];
AVFormatContext *fmt_ctx = avformat_alloc_context();
int ret12 = avformat_open_input(&fmt_ctx, file, NULL, NULL);
if (ret12 < 0) {
    av_strerror(ret, errbuf, sizeof(errbuf));
    __android_log_print(ANDROID_LOG_ERROR, "ffmpeg", "%s", errbuf);
    __android_log_print(ANDROID_LOG_ERROR, "ffmpeg", "%i", ret12);
    return;
}


  



  The above ret12 returning -ve value and it is returning the control out

  


• Play same audio file to two different sound cards simultaneously using android media player [on hold]

  15 décembre 2016, par Hardik

  I have one custom board( media player) running android4.2 OS on it and I need to add a feature that will play same audio to two different sound cards simultaneously.

  I have two output devices HDMI and TLV320aic3100 Codec.
  And Want to play Video and audio through HDMI and same audio should play through TLV codec. Audio through TLV codec should be in sync with HDMI video/audio.

  Right now I’m able to play audio through TLV codec by hard-coding sound card number in tinyalsa PCM code "pcm.c" which is used by HAL code of Android Media Player (by default this code will give audio to HDMI),
  but not able to provide audio to both sound cards simultaneously.

  I tried with creating thread in pcm code and writing incoming audio data to both sound card, By doing this HDMI going into under-run problem.

  Is there any way to provide same audio to both sound cards simultaneously using Android Media Player or any other options to try ?

• Revision 3484 : un sprite sur le bouton play / pause

  28 mai 2010, par kent1 — Log

  un sprite sur le bouton play / pause