Hi All,
Please help me in playing mp3 song.By using ffmpeg I am able to play wav
file.The same code I used to play mp3 file then I am getting following
error which is mentioned in log.txt.
Here I'm attaching the following files:
1.Code I used to play mp3 song.(i.e music.c)
2.The error I got while playing mp3.(i.e log.txt)
the error is while decoding the length obtained is negative.
Thanks & Regards,
Vinay Yamusani.
10-31 16:36:54.370: D/tag(23670): RAH28 Starting
10-31 16:36:54.512: D/tag(23670): RAH getting stream info
10-31 16:36:55.057: D/tag(23670): RAH getting audio stream
10-31 16:36:55.057: D/tag(23670): RAH audio stream found with result: [0]
10-31 16:36:55.057: D/tag(23670): RAH audio codec info loaded
10-31 16:36:55.057: D/tag(23670): RAH audio codec info [86017]
10-31 16:36:55.057: D/tag(23670): RAH audio codec info found
10-31 16:36:55.057: D/tag(23670): RAH audio codec loaded [6] [0]
10-31 16:36:55.057: D/tag(23670): RAH channels [2] sample rate [44100] sample
format [6]
10-31 16:36:55.057: D/tag(23670): RAH frame read: [0] [0]
10-31 16:36:55.057: D/tag(23670): RAH audio ready
10-31 16:36:55.057: D/tag(23670): RAH packet size: [90828]
10-31 16:36:55.057: D/tag(23670): RAH decoding: [1] [0]
10-31 16:36:55.057: D/tag(23670): RAH 1 size [90828] len [-1094995529]
data_size [0] out_size [0]
10-31 16:36:55.062: A/libc(23670): Fatal signal 11 (SIGSEGV) at 0x5c0b5000
(code=1), thread 23700 (Thread-3695)
#include <jni.h>
#include <assert.h>
#include <jni.h>
#include <string.h>
#include <android/log.h>
#include<errno.h>
#include <libavcodec/avcodec.h>
#include <libavformat/avformat.h>
#define AVCODEC_MAX_AUDIO_FRAME_SIZE 19200
#define LOGI(...) __android_log_print(ANDROID_LOG_DEBUG,"tag", __VA_ARGS__)
#define AUDIO_INBUF_SIZE 20480
#define AUDIO_REFILL_THRESH 4096
char *DEBUG_TAG = "hello";
JNIEXPORT void JNICALL Java_com_example_ffmeg_MainActivity_createEngine(
JNIEnv *env, jclass clazz) {
__android_log_print(ANDROID_LOG_DEBUG, "TAG", "create engine");
// avcodec_init();
av_register_all();
}
JNIEXPORT void JNICALL Java_com_example_ffmeg_MainActivity_loadFile(JNIEnv* env, jobject obj, jstring file, jbyteArray array)
{
jboolean isCopy;
int i;
int audioStream = -1;
int res;
int decoded = 0;
int out_size;
AVFormatContext *pFormatCtx =NULL;
AVCodecContext *aCodecCtx;
AVCodecContext *c = NULL;
AVCodec *aCodec;
AVPacket packet;
jclass cls = (*env)->GetObjectClass(env, obj);
jmethodID play = (*env)->GetMethodID(env, cls, "playSound", "([BI)V");
const char * szfile = (*env)->GetStringUTFChars(env, file, &isCopy);
int16_t * pAudioBuffer = (int16_t *) av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE * 2 + FF_INPUT_BUFFER_PADDING_SIZE);
int16_t * outBuffer = (int16_t *) av_malloc(AVCODEC_MAX_AUDIO_FRAME_SIZE * 2 + FF_INPUT_BUFFER_PADDING_SIZE);
LOGI("RAH28 Starting");
res = avformat_open_input(&pFormatCtx, szfile, NULL,NULL);
if (res != 0)
{
LOGI("RAH opening input failed with result: [%d]", res);
}
LOGI("RAH getting stream info");
res = av_find_stream_info(pFormatCtx);
if (res < 0)
{
LOGI("RAH getting stream info failed with result: [%d]", res);
}
LOGI("RAH getting audio stream");
for (i = 0; i < pFormatCtx->nb_streams; i++)
{
if (pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO&& audioStream < 0)
{
audioStream = i;
}
}
if (audioStream == -1)
{
LOGI("RAH couldn't find audio stream");
}
LOGI("RAH audio stream found with result: [%d]", res);
aCodecCtx = pFormatCtx->streams[audioStream]->codec;
LOGI("RAH audio codec info loaded");
LOGI("RAH audio codec info [%d]", aCodecCtx->codec_id);
aCodec = avcodec_find_decoder(aCodecCtx->codec_id);
if (!aCodec)
{
LOGI("RAH audio codec unsupported");
}
LOGI("RAH audio codec info found");
res = avcodec_open2(aCodecCtx, aCodec,NULL);
LOGI("RAH audio codec loaded [%d] [%d]", aCodecCtx->sample_fmt, res);
// c=avcodec_alloc_context3();
av_init_packet(&packet);
LOGI("RAH channels [%d] sample rate [%d] sample format [%d]",aCodecCtx->channels, aCodecCtx->sample_rate, aCodecCtx->sample_fmt);
int x, y;
x = 0;
y = 0;
while (av_read_frame(pFormatCtx, &packet) >= 0)
{
LOGI("RAH frame read: [%d] [%d]", x++, y);
if (aCodecCtx->codec_type == AVMEDIA_TYPE_AUDIO)
{
LOGI("RAH audio ready");
int data_size = AVCODEC_MAX_AUDIO_FRAME_SIZE
* 2+FF_INPUT_BUFFER_PADDING_SIZE;
int size = packet.size;
y = 0;
decoded = 0;
LOGI("RAH packet size: [%d]", size);
while (size > 0)
{
LOGI("RAH decoding: [%d] [%d]", x, y++);
int len = avcodec_decode_audio3(aCodecCtx, pAudioBuffer,
&data_size, &packet);
LOGI("RAH 1 size [%d] len [%d] data_size [%d] out_size [%d]",size, len, data_size, out_size);
jbyte *bytes = (*env)->GetByteArrayElements(env, array, NULL);
// memmove(bytes + decoded, (jbyte *) (pAudioBuffer), 192000);
memcpy(bytes + decoded, pAudioBuffer, len); //
LOGI("RAH 2");
(*env)->ReleaseByteArrayElements(env, array, bytes, 0);
LOGI("RAH 3");
(*env)->CallVoidMethod(env, obj, play, array, len);
LOGI("RAH 4");
size -= len;
decoded += len;
}
av_free_packet(&packet);
}
}
// Close the video file
av_close_input_file(pFormatCtx);
//__android_log_print(ANDROID_LOG_DEBUG, DEBUG_TAG, "RAH Finished Running result: [%d]", res);
(*env)->ReleaseStringUTFChars(env, file, szfile);
}
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