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pull filtered audio from the filter graph

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dev
xufuji456 3 years ago
parent 4f77ad512d
commit 9ceed1d4af
1 changed files with 27 additions and 28 deletions
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  1. 55
      app/src/main/cpp/audio_player.cpp

55
app/src/main/cpp/audio_player.cpp
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@ -28,7 +28,7 @@ extern "C" {
#define SLEEP_TIME 1000 * 16 #define SLEEP_TIME 1000 * 16
#define MAX_AUDIO_FRAME_SIZE 48000 * 4 #define MAX_AUDIO_FRAME_SIZE 48000 * 4
const char *filter_descr = "superequalizer=6b=6:8b=6"; const char *filter_descr = "superequalizer=6b=4:8b=5:10b=5";
int init_volume_filter(AVFilterGraph **graph, AVFilterContext **src, AVFilterContext **sink, int init_volume_filter(AVFilterGraph **graph, AVFilterContext **src, AVFilterContext **sink,
uint64_t channel_layout, AVSampleFormat inputFormat, int sample_rate) { uint64_t channel_layout, AVSampleFormat inputFormat, int sample_rate) {
@ -276,7 +276,7 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
// in_ch_layout, in_sample_fmt, in_sample_rate); // in_ch_layout, in_sample_fmt, in_sample_rate);
ret = init_equalizer_filter(codecCtx, &audioFilterGraph, &audioSrcContext, &audioSinkContext); ret = init_equalizer_filter(codecCtx, &audioFilterGraph, &audioSrcContext, &audioSinkContext);
if (ret < 0) { if (ret < 0) {
LOGE(TAG, "Unable to init filter graph:%d", stderr); LOGE(TAG, "Unable to init filter graph:%d", ret);
goto end; goto end;
} }
@ -290,35 +290,34 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
if (got_frame > 0) { if (got_frame > 0) {
ret = av_buffersrc_add_frame(audioSrcContext, frame); ret = av_buffersrc_add_frame(audioSrcContext, frame);
if (ret < 0) { if (ret < 0) {
LOGE(TAG, "Error add the frame to the filter graph:%d", stderr); LOGE(TAG, "Error add the frame to the filter graph:%d", ret);
} }
/* Get all the filtered output that is available. */ /* Get all the filtered output that is available. */
ret = av_buffersink_get_frame(audioSinkContext, filter_frame); while (1) {
if (ret == AVERROR(EAGAIN)) { ret = av_buffersink_get_frame(audioSinkContext, filter_frame);
LOGE(TAG, "get filter frame again..."); if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
continue; break;
} if (ret < 0) {
if (ret < 0) { LOGE(TAG, "Error get the frame from the filter graph:%d", ret);
LOGE(TAG, "Error get the frame from the filter graph:%d", stderr); goto end;
goto end; }
} //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,
/*frame*/filter_frame->nb_samples, out_sample_fmt, 1);
//convert audio format jbyteArray audio_sample_array = env->NewByteArray(out_buffer_size);
swr_convert(swrCtx, &out_buffer, MAX_AUDIO_FRAME_SIZE, jbyte *sample_byte_array = env->GetByteArrayElements(audio_sample_array, NULL);
(const uint8_t **) /*frame*/filter_frame->data, /*frame*/filter_frame->nb_samples); memcpy(sample_byte_array, out_buffer, (size_t) out_buffer_size);
int out_buffer_size = av_samples_get_buffer_size(NULL, out_channel_nb, env->ReleaseByteArrayElements(audio_sample_array, sample_byte_array, 0);
/*frame*/filter_frame->nb_samples, out_sample_fmt, 1); //call write method to play
env->CallIntMethod(audio_track, audio_track_write_mid,
jbyteArray audio_sample_array = env->NewByteArray(out_buffer_size); audio_sample_array, 0, out_buffer_size);
jbyte *sample_byte_array = env->GetByteArrayElements(audio_sample_array, NULL); env->DeleteLocalRef(audio_sample_array);
memcpy(sample_byte_array, out_buffer, (size_t) out_buffer_size); av_frame_unref(filter_frame);
env->ReleaseByteArrayElements(audio_sample_array, sample_byte_array, 0); usleep(SLEEP_TIME);
//call write method to play }
env->CallIntMethod(audio_track, audio_track_write_mid,
audio_sample_array, 0, out_buffer_size);
env->DeleteLocalRef(audio_sample_array);
av_frame_unref(filter_frame);
usleep(SLEEP_TIME);
} }
} }
av_packet_unref(packet); av_packet_unref(packet);

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