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#include "ffmpeg_decoder.h"
#include <iostream>
DecoderFFmpeg::DecoderFFmpeg(const std::string& filename) {
av_register_all();
std::cerr << "Opening file: " << av_open_input_file(&lavf_ctx, filename.c_str(), 0, 0, 0) << std::endl;
av_find_stream_info(lavf_ctx);
dump_format(lavf_ctx, 0, filename.c_str(), 0);
lavc_ctx = lavf_ctx->streams[0]->codec;
codec = avcodec_find_decoder(lavc_ctx->codec_id);
std::cerr << "Opening decoder: " << avcodec_open(lavc_ctx, codec) << std::endl;
}
DecoderFFmpeg::~DecoderFFmpeg() {
}
std::size_t DecoderFFmpeg::read(char* buf, std::size_t buf_size) {
AVPacket packet;
av_read_packet(lavf_ctx, &packet);
int len = avcodec_decode_audio3(lavc_ctx, (int16_t*)buf, (int*)&buf_size, &packet);
std::cerr << "Decoded " << len << " bytes of data to " << buf_size << " bytes of raw data." << std::endl;
av_free_packet(&packet);
return buf_size;
}
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