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FFmpegAndroid
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passing filter from application

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dev
xufuji456 3 years ago
parent bad4fccffe
commit c509dba761
2 changed files with 15 additions and 17 deletions
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  1. 28
      app/src/main/cpp/audio_player.cpp
  2. 2
      app/src/main/java/com/frank/ffmpeg/AudioPlayer.java

28
app/src/main/cpp/audio_player.cpp
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@ -28,7 +28,7 @@ extern "C" {
#define SLEEP_TIME 1000 * 16
#define MAX_AUDIO_FRAME_SIZE 48000 * 4
const char *filter_descr = "superequalizer=6b=4:8b=5:10b=5";
//const char *filter_descr = "superequalizer=6b=4:8b=5:10b=5";
int init_volume_filter(AVFilterGraph **graph, AVFilterContext **src, AVFilterContext **sink,
uint64_t channel_layout, AVSampleFormat inputFormat, int sample_rate) {
@ -128,7 +128,8 @@ int init_volume_filter(AVFilterGraph **graph, AVFilterContext **src, AVFilterCon
return 0;
}
int init_equalizer_filter(AVCodecContext *codecCtx, AVFilterGraph **graph, AVFilterContext **src, AVFilterContext **sink) {
int init_equalizer_filter(const char *filter_desc, AVCodecContext *codecCtx, AVFilterGraph **graph,
AVFilterContext **src, AVFilterContext **sink) {
int ret = 0;
char args[512];
AVFilterContext *buffersrc_ctx;
@ -177,7 +178,7 @@ int init_equalizer_filter(AVCodecContext *codecCtx, AVFilterGraph **graph, AVFil
inputs->pad_idx = 0;
inputs->next = NULL;
if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_descr,
if ((ret = avfilter_graph_parse_ptr(filter_graph, filter_desc,
&inputs, &outputs, NULL)) < 0) {
LOGE(TAG, "avfilter_graph_parse_ptr error:%d", ret);
goto end;
@ -195,7 +196,7 @@ end:
return ret;
}
AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
AUDIO_PLAYER_FUNC(void, play, jstring input_jstr, jstring filter_jstr) {
int got_frame = 0, ret = 0;
AVFilterGraph *audioFilterGraph;
AVFilterContext *audioSrcContext;
@ -203,6 +204,8 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
const char *input_cstr = env->GetStringUTFChars(input_jstr, NULL);
LOGI(TAG, "input url=%s", input_cstr);
const char *filter_desc = env->GetStringUTFChars(filter_jstr, NULL);
LOGE(TAG, "filter_desc=%s", filter_desc);
av_register_all();
AVFormatContext *pFormatCtx = avformat_alloc_context();
if (avformat_open_input(&pFormatCtx, input_cstr, NULL, NULL) != 0) {
@ -220,7 +223,6 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
break;
}
}
AVCodecContext *codecCtx = pFormatCtx->streams[audio_stream_idx]->codec;
AVCodec *codec = avcodec_find_decoder(codecCtx->codec_id);
if (codec == NULL) {
@ -234,7 +236,6 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
AVPacket *packet = (AVPacket *) av_malloc(sizeof(AVPacket));
AVFrame *frame = av_frame_alloc();
SwrContext *swrCtx = swr_alloc();
enum AVSampleFormat in_sample_fmt = codecCtx->sample_fmt;
enum AVSampleFormat out_sample_fmt = AV_SAMPLE_FMT_S16;
int in_sample_rate = codecCtx->sample_rate;
@ -247,8 +248,7 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
in_ch_layout, in_sample_fmt, in_sample_rate,
0, NULL);
swr_init(swrCtx);
int out_channel_nb = av_get_channel_layout_nb_channels(out_ch_layout);
int out_channel = av_get_channel_layout_nb_channels(out_ch_layout);
jclass player_class = env->GetObjectClass(thiz);
if (!player_class) {
LOGE(TAG, "player_class not found...");
@ -259,22 +259,20 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
if (!audio_track_method) {
LOGE(TAG, "audio_track_method not found...");
}
jobject audio_track = env->CallObjectMethod(thiz, audio_track_method, out_sample_rate,
out_channel_nb);
jobject audio_track = env->CallObjectMethod(thiz, audio_track_method, out_sample_rate, out_channel);
//call play method
jclass audio_track_class = env->GetObjectClass(audio_track);
jmethodID audio_track_play_mid = env->GetMethodID(audio_track_class, "play", "()V");
env->CallVoidMethod(audio_track, audio_track_play_mid);
//get write method
jmethodID audio_track_write_mid = env->GetMethodID(audio_track_class, "write",
"([BII)I");
jmethodID audio_track_write_mid = env->GetMethodID(audio_track_class, "write", "([BII)I");
uint8_t *out_buffer = (uint8_t *) av_malloc(MAX_AUDIO_FRAME_SIZE);
/* Set up the filter graph. */
AVFrame *filter_frame = av_frame_alloc();
// ret = init_volume_filter(&audioFilterGraph, &audioSrcContext, &audioSinkContext,
// in_ch_layout, in_sample_fmt, in_sample_rate);
ret = init_equalizer_filter(codecCtx, &audioFilterGraph, &audioSrcContext, &audioSinkContext);
ret = init_equalizer_filter(filter_desc, codecCtx, &audioFilterGraph, &audioSrcContext, &audioSinkContext);
if (ret < 0) {
LOGE(TAG, "Unable to init filter graph:%d", ret);
goto end;
@ -304,7 +302,7 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
//convert audio format
swr_convert(swrCtx, &out_buffer, MAX_AUDIO_FRAME_SIZE,
(const uint8_t **) /*frame*/filter_frame->data, /*frame*/filter_frame->nb_samples);
int out_buffer_size = av_samples_get_buffer_size(NULL, out_channel_nb,
int out_buffer_size = av_samples_get_buffer_size(NULL, out_channel,
/*frame*/filter_frame->nb_samples, out_sample_fmt, 1);
jbyteArray audio_sample_array = env->NewByteArray(out_buffer_size);
@ -332,5 +330,5 @@ end:
avcodec_free_context(&codecCtx);
avformat_close_input(&pFormatCtx);
env->ReleaseStringUTFChars(input_jstr, input_cstr);
env->ReleaseStringUTFChars(filter_jstr, filter_desc);
}

2
app/src/main/java/com/frank/ffmpeg/AudioPlayer.java
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@ -15,7 +15,7 @@ public class AudioPlayer {
}
//using AudioTrack to play
public native void play(String audioPath);
public native void play(String audioPath, String filterDesc);
//using OpenSL ES to play
public native void playAudio(String audioPath);

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