k
/
FFmpegAndroid
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

pull filtered audio from the filter graph

Browse Source
dev
xufuji456 3 years ago
parent 4f77ad512d
commit 9ceed1d4af
1 changed files with 27 additions and 28 deletions
Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL
Show Stats Download Patch File Download Diff File
  1. 55
      app/src/main/cpp/audio_player.cpp

55
app/src/main/cpp/audio_player.cpp
Unescape View File

@ -28,7 +28,7 @@ extern "C" {
#define SLEEP_TIME 1000 * 16
#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,
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);
ret = init_equalizer_filter(codecCtx, &audioFilterGraph, &audioSrcContext, &audioSinkContext);
if (ret < 0) {
LOGE(TAG, "Unable to init filter graph:%d", stderr);
LOGE(TAG, "Unable to init filter graph:%d", ret);
goto end;
}
@ -290,35 +290,34 @@ AUDIO_PLAYER_FUNC(void, play, jstring input_jstr) {
if (got_frame > 0) {
ret = av_buffersrc_add_frame(audioSrcContext, frame);
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. */
ret = av_buffersink_get_frame(audioSinkContext, filter_frame);
if (ret == AVERROR(EAGAIN)) {
LOGE(TAG, "get filter frame again...");
continue;
}
if (ret < 0) {
LOGE(TAG, "Error get the frame from the filter graph:%d", stderr);
goto end;
}
while (1) {
ret = av_buffersink_get_frame(audioSinkContext, filter_frame);
if (ret == AVERROR(EAGAIN) || ret == AVERROR_EOF)
break;
if (ret < 0) {
LOGE(TAG, "Error get the frame from the filter graph:%d", ret);
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
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);
jbyteArray audio_sample_array = env->NewByteArray(out_buffer_size);
jbyte *sample_byte_array = env->GetByteArrayElements(audio_sample_array, NULL);
memcpy(sample_byte_array, out_buffer, (size_t) out_buffer_size);
env->ReleaseByteArrayElements(audio_sample_array, sample_byte_array, 0);
//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);
jbyteArray audio_sample_array = env->NewByteArray(out_buffer_size);
jbyte *sample_byte_array = env->GetByteArrayElements(audio_sample_array, NULL);
memcpy(sample_byte_array, out_buffer, (size_t) out_buffer_size);
env->ReleaseByteArrayElements(audio_sample_array, sample_byte_array, 0);
//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);

Write Preview
Loading…
Cancel
Save