int main(int argc, char **argv)
{
char *in_graph_desc, **out_dev_name;
int nb_out_dev = 0, nb_streams = 0;
AVFilterGraph *in_graph = NULL;
Stream *streams = NULL, *st;
AVFrame *frame = NULL;
int i, j, run = 1, ret;
//av_log_set_level(AV_LOG_DEBUG);
if (argc < 3) {
av_log(NULL, AV_LOG_ERROR,
"Usage: %s filter_graph dev:out [dev2:out2...]\n\n"
"Examples:\n"
"%s movie=file.nut:s=v+a xv:- alsa:default\n"
"%s movie=file.nut:s=v+a uncodedframecrc:pipe:0\n",
argv[0], argv[0], argv[0]);
exit(1);
}
in_graph_desc = argv[1];
out_dev_name = argv + 2;
nb_out_dev = argc - 2;
av_register_all();
avdevice_register_all();
avfilter_register_all();
/* Create input graph */
if (!(in_graph = avfilter_graph_alloc())) {
ret = AVERROR(ENOMEM);
av_log(NULL, AV_LOG_ERROR, "Unable to alloc graph graph: %s\n",
av_err2str(ret));
goto fail;
}
ret = avfilter_graph_parse_ptr(in_graph, in_graph_desc, NULL, NULL, NULL);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Unable to parse graph: %s\n",
av_err2str(ret));
goto fail;
}
nb_streams = 0;
for (i = 0; i < in_graph->nb_filters; i++) {
AVFilterContext *f = in_graph->filters[i];
for (j = 0; j < f->nb_inputs; j++) {
if (!f->inputs[j]) {
av_log(NULL, AV_LOG_ERROR, "Graph has unconnected inputs\n");
ret = AVERROR(EINVAL);
goto fail;
}
}
for (j = 0; j < f->nb_outputs; j++)
if (!f->outputs[j])
nb_streams++;
}
if (!nb_streams) {
av_log(NULL, AV_LOG_ERROR, "Graph has no output stream\n");
ret = AVERROR(EINVAL);
goto fail;
}
if (nb_out_dev != 1 && nb_out_dev != nb_streams) {
av_log(NULL, AV_LOG_ERROR,
"Graph has %d output streams, %d devices given\n",
nb_streams, nb_out_dev);
ret = AVERROR(EINVAL);
goto fail;
}
if (!(streams = av_calloc(nb_streams, sizeof(*streams)))) {
ret = AVERROR(ENOMEM);
av_log(NULL, AV_LOG_ERROR, "Could not allocate streams\n");
}
st = streams;
for (i = 0; i < in_graph->nb_filters; i++) {
AVFilterContext *f = in_graph->filters[i];
for (j = 0; j < f->nb_outputs; j++) {
if (!f->outputs[j]) {
if ((ret = create_sink(st++, in_graph, f, j)) < 0)
goto fail;
}
}
}
av_assert0(st - streams == nb_streams);
if ((ret = avfilter_graph_config(in_graph, NULL)) < 0) {
av_log(NULL, AV_LOG_ERROR, "Failed to configure graph\n");
goto fail;
}
/* Create output devices */
for (i = 0; i < nb_out_dev; i++) {
char *fmt = NULL, *dev = out_dev_name[i];
st = &streams[i];
if ((dev = strchr(dev, ':'))) {
*(dev++) = 0;
fmt = out_dev_name[i];
}
ret = avformat_alloc_output_context2(&st->mux, NULL, fmt, dev);
if (ret < 0) {
av_log(NULL, AV_LOG_ERROR, "Failed to allocate output: %s\n",
av_err2str(ret));
goto fail;
}
if (!(st->mux->oformat->flags & AVFMT_NOFILE)) {
ret = avio_open2(&st->mux->pb, st->mux->filename, AVIO_FLAG_WRITE,
NULL, NULL);
if (ret < 0) {
av_log(st->mux, AV_LOG_ERROR, "Failed to init output: %s\n",
av_err2str(ret));
goto fail;
}
}
}
for (; i < nb_streams; i++)
streams[i].mux = streams[0].mux;
/* Create output device streams */
for (i = 0; i < nb_streams; i++) {
st = &streams[i];
if (!(st->stream = avformat_new_stream(st->mux, NULL))) {
ret = AVERROR(ENOMEM);
av_log(NULL, AV_LOG_ERROR, "Failed to create output stream\n");
goto fail;
}
st->stream->codec->codec_type = st->link->type;
st->stream->time_base = st->stream->codec->time_base =
st->link->time_base;
switch (st->link->type) {
case AVMEDIA_TYPE_VIDEO:
st->stream->codec->codec_id = AV_CODEC_ID_RAWVIDEO;
st->stream->avg_frame_rate =
st->stream-> r_frame_rate = av_buffersink_get_frame_rate(st->sink);
st->stream->codec->width = st->link->w;
st->stream->codec->height = st->link->h;
st->stream->codec->sample_aspect_ratio = st->link->sample_aspect_ratio;
st->stream->codec->pix_fmt = st->link->format;
break;
case AVMEDIA_TYPE_AUDIO:
st->stream->codec->channel_layout = st->link->channel_layout;
st->stream->codec->channels = avfilter_link_get_channels(st->link);
st->stream->codec->sample_rate = st->link->sample_rate;
st->stream->codec->sample_fmt = st->link->format;
st->stream->codec->codec_id =
av_get_pcm_codec(st->stream->codec->sample_fmt, -1);
break;
default:
av_assert0(!"reached");
}
}
/* Init output devices */
for (i = 0; i < nb_out_dev; i++) {
st = &streams[i];
if ((ret = avformat_write_header(st->mux, NULL)) < 0) {
av_log(st->mux, AV_LOG_ERROR, "Failed to init output: %s\n",
av_err2str(ret));
goto fail;
}
}
/* Check output devices */
for (i = 0; i < nb_streams; i++) {
st = &streams[i];
ret = av_write_uncoded_frame_query(st->mux, st->stream->index);
if (ret < 0) {
av_log(st->mux, AV_LOG_ERROR,
"Uncoded frames not supported on stream #%d: %s\n",
i, av_err2str(ret));
goto fail;
}
}
while (run) {
ret = avfilter_graph_request_oldest(in_graph);
if (ret < 0) {
if (ret == AVERROR_EOF) {
run = 0;
} else {
av_log(NULL, AV_LOG_ERROR, "Error filtering: %s\n",
av_err2str(ret));
break;
}
}
for (i = 0; i < nb_streams; i++) {
st = &streams[i];
while (1) {
if (!frame && !(frame = av_frame_alloc())) {
ret = AVERROR(ENOMEM);
av_log(NULL, AV_LOG_ERROR, "Could not allocate frame\n");
goto fail;
}
ret = av_buffersink_get_frame_flags(st->sink, frame,
AV_BUFFERSINK_FLAG_NO_REQUEST);
if (ret < 0) {
if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
av_log(NULL, AV_LOG_WARNING, "Error in sink: %s\n",
av_err2str(ret));
break;
}
if (frame->pts != AV_NOPTS_VALUE)
frame->pts = av_rescale_q(frame->pts,
st->link ->time_base,
st->stream->time_base);
ret = av_interleaved_write_uncoded_frame(st->mux,
st->stream->index,
frame);
frame = NULL;
if (ret < 0) {
av_log(st->stream->codec, AV_LOG_ERROR,
"Error writing frame: %s\n", av_err2str(ret));
goto fail;
}
}
}
}
ret = 0;
for (i = 0; i < nb_out_dev; i++) {
st = &streams[i];
av_write_trailer(st->mux);
}
fail:
av_frame_free(&frame);
avfilter_graph_free(&in_graph);
if (streams) {
for (i = 0; i < nb_out_dev; i++) {
st = &streams[i];
if (st->mux) {
if (st->mux->pb)
avio_closep(&st->mux->pb);
avformat_free_context(st->mux);
}
}
}
av_freep(&streams);
return ret < 0;
}
//----------------------------------------------------------------------------------------------------
bool EEMusic::AsyncLoadMusic(const char* _fileName)
{
AVFormatContext *formatContext = NULL;
int streamIndex = -1;
AVCodecContext *codecContext = NULL;
AVCodec *codec = NULL;
// open file
if (avformat_open_input(&formatContext, _fileName, NULL, NULL) < 0)
{
return false;
}
// find stream info
if (avformat_find_stream_info(formatContext, NULL) < 0)
{
//unable to find stream info
avformat_close_input(&formatContext);
return false;
}
// find the stream
if ((streamIndex = av_find_best_stream(formatContext, AVMEDIA_TYPE_AUDIO, -1, -1, NULL, 0)) < 0)
{
avformat_close_input(&formatContext);
return false;
}
// find decoder
codecContext = formatContext->streams[streamIndex]->codec;
codec = avcodec_find_decoder(codecContext->codec_id);
if (!codec)
{
avformat_close_input(&formatContext);
return false;
}
// open codec
if (avcodec_open2(codecContext, codec, NULL) < 0)
{
avformat_close_input(&formatContext);
return false;
}
int channels = codecContext->channels;
int bitsPerSample = av_get_bits_per_sample(av_get_pcm_codec(codecContext->sample_fmt, -1));
int bytesPerSample = bitsPerSample / 8;
int samplesPerSec = codecContext->sample_rate;
int blockAlign = bytesPerSample * channels;
int avgBytesPerSec = samplesPerSec * blockAlign;
// m_totalBytes = (int)((double)formatContext->duration / AV_TIME_BASE * avgBytesPerSec);
// m_totalSamples = (int)((double)formatContext->duration / AV_TIME_BASE * samplesPerSec);
// m_totalTime = formatContext->duration / (double)AV_TIME_BASE;
if (bitsPerSample == 32)
m_format.wFormatTag = WAVE_FORMAT_IEEE_FLOAT;
else
m_format.wFormatTag = WAVE_FORMAT_PCM;
m_format.nChannels = channels;
m_format.nSamplesPerSec = samplesPerSec;
m_format.nAvgBytesPerSec = avgBytesPerSec;
m_format.nBlockAlign = blockAlign;
m_format.wBitsPerSample = bitsPerSample;
m_format.cbSize = 0;
if (FAILED(s_XAudio2->CreateSourceVoice(&m_sourceVoice, &m_format, 0, XAUDIO2_DEFAULT_FREQ_RATIO, &m_musicCallBack)))
return false;
// todo: keep the the handler of the thr
m_loader = new boost::thread([&, bytesPerSample, formatContext, streamIndex, codecContext, codec] () mutable ->bool {
AVPacket *packet = new AVPacket;
av_init_packet(packet);
AVFrame *frame = av_frame_alloc();
uint32_t len = 0;
int got;
while (av_read_frame(formatContext, packet) >= 0)
{
if (packet->stream_index == streamIndex)
{
if (avcodec_decode_audio4(codecContext, frame, &got, packet) < 0)
{
printf("Error in decoding audio frame.\n");
av_free_packet(packet);
continue;
}
if (got > 0)
{
//int size = *frame->linesize;
int size = frame->nb_samples * bytesPerSample;
if (m_data.empty())
m_data.push_back(std::pair<int, std::string>(0, std::string()));
else
m_data.push_back(std::pair<int, std::string>(m_data.back().first + m_data.back().second.size(), std::string()));
std::string& data = m_data.back().second;
if (av_sample_fmt_is_planar(codecContext->sample_fmt))
{
data.resize(size * 2);
int index = 0;
for (int i = 0; i < size; i += bytesPerSample)
{
for (int j = 0; j < bytesPerSample; ++j)
{
data[index++] = (char)frame->data[0][i + j];
}
for (int j = 0; j < bytesPerSample; ++j)
{
data[index++] = (char)frame->data[1][i + j];
}
}
len += size * 2;
}
else
{
data.resize(size);
memcpy((&data[0]), frame->data[0], size);
len += size;
}
try
{
PushBuffer(EEMusicCell(&m_data.back()));
if (EE_MUSIC_NO_BUFFER == m_state)
{
SubmitBuffer();
SubmitBuffer();
SubmitBuffer();
}
EEThreadSleep(1);
}
catch (boost::thread_interrupted&)
{
avcodec_close(codecContext);
avformat_close_input(&formatContext);
return false;
}
}
}
av_free_packet(packet);
}
m_totalBytes = len;
m_totalSamples = len / m_format.nBlockAlign;
m_totalTime = (double)m_totalSamples / m_format.nSamplesPerSec;
av_frame_free(&frame);
avcodec_close(codecContext);
avformat_close_input(&formatContext);
return true;
});
return true;
}