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PLAYBACK AUDIO USING FFMPEG in C [on hold]

4 avril 2019, par GOBI

I have some Errors in the Below code. what can I do to run this code?



#include 

#include 

#include 

#include 

#include <sys></sys>types.h>



#include 

#include <alsa></alsa>asoundlib.h>



#include <libavutil></libavutil>opt.h>

#include <libavutil></libavutil>mem.h>

#include <libavcodec></libavcodec>avcodec.h>  

#include <libavformat></libavformat>avformat.h>

#include <libavutil></libavutil>samplefmt.h>

#include <libswresample></libswresample>swresample.h>



#define INBUF_SIZE          4096

#define AUDIO_INBUF_SIZE    20480

#define AUDIO_REFILL_THRESH 4096

#define FF_INPUT_BUFFER_PADDING_SIZE 4096





void audio_decode_file(const char *outfilename, const char *filename)

{

    AVCodec *codec;

    AVCodecContext *c= NULL;

    int len;

    FILE *f, *outfile;

    uint8_t inbuf[AUDIO_INBUF_SIZE + FF_INPUT_BUFFER_PADDING_SIZE];

    AVPacket avpkt;

    AVFrame *decoded_frame = NULL;



    av_init_packet(&amp;avpkt);



    printf("Decode audio file %s to %s\n", filename, outfilename);



    /* find the mpeg audio decoder */

    codec = avcodec_find_decoder(AV_CODEC_ID_MP3);

    if (!codec) {

        printf("Codec not found\n");

        exit(1);

    }



    c = avcodec_alloc_context3(codec);

    if (!c) {

        printf("Could not allocate audio codec context\n");

        exit(1);

    }



    /* open it */

    if (avcodec_open2(c, codec, NULL) &lt; 0) {

        printf("Could not open codec\n");

        exit(1);

    }



    f = fopen(filename, "rb");

    if (!f) {

        printf("Could not open %s\n", filename);

        exit(1);

    }

    outfile = fopen(outfilename, "wb");

    if (!outfile) {

        av_free(c);

        exit(1);

    }



    /* decode until eof */

    avpkt.data = inbuf;

    avpkt.size = fread(inbuf, 1, AUDIO_INBUF_SIZE, f);



    while (avpkt.size > 0) {

        int got_frame = 0;



        if (!decoded_frame) {

            if (!(decoded_frame = av_frame_alloc())) {

                printf("Could not allocate audio frame\n");

                exit(1);

            }

        }



        len = avcodec_decode_audio4(c, decoded_frame, &amp;got_frame, &amp;avpkt);

        if (len &lt; 0) {

            printf("Error while decoding\n");

            exit(1);

        }

        if (got_frame) {

            /* if a frame has been decoded, output it */

            int data_size = av_samples_get_buffer_size(NULL, c->channels,

                                                       decoded_frame->nb_samples,

                                                       c->sample_fmt, 1);

            if (data_size &lt; 0) {

                /* This should not occur, checking just for paranoia */

                printf("Failed to calculate data size\n");

                exit(1);

            }

            fwrite(decoded_frame->data[0], 1, data_size, outfile);

        }

        avpkt.size -= len;

        avpkt.data += len;

        avpkt.dts =

        avpkt.pts = AV_NOPTS_VALUE;

        if (avpkt.size &lt; AUDIO_REFILL_THRESH) {

            /* Refill the input buffer, to avoid trying to decode

             * incomplete frames. Instead of this, one could also use

             * a parser, or use a proper container format through

             * libavformat. */

            memmove(inbuf, avpkt.data, avpkt.size);

            avpkt.data = inbuf;

            len = fread(avpkt.data + avpkt.size, 1,

                        AUDIO_INBUF_SIZE - avpkt.size, f);

            if (len > 0)

                avpkt.size += len;

        }

    }



    fclose(outfile);

    fclose(f);



    avcodec_close(c);

    av_free(c);

    av_frame_free(&amp;decoded_frame);

}



int snd_ctl_set_volume(int val)

{

    int err;   

    int orig_volume = 0;

    //unsigned int count;

    static snd_ctl_t *handle = NULL;   

    snd_ctl_elem_info_t *info;  

    snd_ctl_elem_id_t *id;  

    snd_ctl_elem_value_t *control;  

    //snd_ctl_elem_type_t type;



    snd_ctl_elem_info_alloca(&amp;info);   

    snd_ctl_elem_id_alloca(&amp;id);   

    snd_ctl_elem_value_alloca(&amp;control);    



    snd_ctl_elem_id_set_interface(id, SND_CTL_ELEM_IFACE_MIXER);

    snd_ctl_elem_id_set_name(id, "Headphone Playback Volume");

    // snd_ctl_elem_id_set_name(id, "PCM Playback Volume");

    // snd_ctl_elem_id_set_index(id, 1);  // "Mic Capture Volume" does not have index.   



    if ((err = snd_ctl_open(&amp;handle, "default", 0)) &lt; 0) { 

        printf("Control open error: %s\n", snd_strerror(err));

        return -1; 

    }  



    snd_ctl_elem_info_set_id(info, id);   

    if ((err = snd_ctl_elem_info(handle, info)) &lt; 0) {  

        printf("Cannot find the given element from control: %s\n", snd_strerror(err));   

        snd_ctl_close(handle);

        return -1; 

    } 



    //type = snd_ctl_elem_info_get_type(info);   

    //count = snd_ctl_elem_info_get_count(info); 



    snd_ctl_elem_value_set_id(control, id);   



    if (!snd_ctl_elem_read(handle, control)) {  

        orig_volume = snd_ctl_elem_value_get_integer(control, 0); 

    } 



    if(val != orig_volume) {   

        printf("new_value(%d) orgin_value(%d)\n", val, orig_volume);

        snd_ctl_elem_value_set_integer(control, 0, (long)(val));

        snd_ctl_elem_value_set_integer(control, 1, (long)(val));



        if ((err = snd_ctl_elem_write(handle, control)) &lt; 0) {  

            printf("Control element write error: %s\n", snd_strerror(err));   

            snd_ctl_close(handle);   

            return -1; 

        } 

    }  

    snd_ctl_close(handle);  

    return 0;

}



snd_pcm_t *pcm_init(int bitrate) 

{

    int res;

    unsigned int val;



    snd_pcm_t *handle;

    snd_pcm_hw_params_t *params;

    // snd_pcm_uframes_t frames;



    res = snd_pcm_open(&amp;handle, "default", SND_PCM_STREAM_PLAYBACK, 0);

    //res = snd_pcm_open(&amp;handle, "plug:dmixer", SND_PCM_STREAM_PLAYBACK, 0);

    if (res &lt; 0) {

        printf("unable to open pcm device: %s\n", snd_strerror(res));

        return NULL;

    }



    snd_pcm_hw_params_alloca(&amp;params);

    snd_pcm_hw_params_any(handle, params);

    snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED);

    snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE);

    snd_pcm_hw_params_set_channels(handle, params, 2);



    val = bitrate - 1;

    snd_pcm_hw_params_set_rate_near(handle, params, &amp;val, 0);



    unsigned period_time = 0;

    unsigned buffer_time = 0;

    snd_pcm_hw_params_get_buffer_time_max(params, &amp;buffer_time, 0);

    if (buffer_time > 500000) buffer_time = 500000;

    period_time = buffer_time >> 2;

    snd_pcm_hw_params_set_period_time_near(handle, params, &amp;period_time, 0);

    snd_pcm_hw_params_set_buffer_time_near(handle, params, &amp;buffer_time, 0);

    //frames = 32;

    //snd_pcm_hw_params_set_period_size_near(handle, params, &amp;frames, &amp;dir);

    res = snd_pcm_hw_params(handle, params);

    if (res &lt; 0) {

        printf("unable to set hw parameters: %s\n", snd_strerror(res));

        snd_pcm_close(handle);

        return NULL;

    }



    snd_ctl_set_volume(10);



    return handle;

}





#define AVCODEC_MAX_AUDIO_FRAME_SIZE    512

// uint8_t inbuf[AVCODEC_MAX_AUDIO_FRAME_SIZE * 100];

int main(int argc, char *argv[])

{

    if(argc &lt; 2) {

        printf("Usage : %s [mp3 file]\n", argv[0]);

        exit(1);

    }



    av_register_all();



    int i, audioStream, res;

    AVCodecContext *    pCodecCtx;

    AVFormatContext *   pFormatCtx;

    AVCodec *           pCodec;

    AVFrame *           pFrame;

    AVPacket            packet;



    uint8_t * pktdata;

    int pktsize;



    pFormatCtx = avformat_alloc_context();



    if (avformat_open_input(&amp;pFormatCtx, argv[1], NULL, NULL) != 0) {

        printf("can,t open file");

        return -1;

    }



    //if (av_find_stream_info(pFormatCtx) &lt; 0)

    if (avformat_find_stream_info(pFormatCtx, NULL) &lt; 0)

        return -1;



    av_dump_format(pFormatCtx, 0, argv[1], 0); 



    audioStream = -1;

    for (i = 0; i &lt; pFormatCtx->nb_streams; ++i)  

    {

        if (pFormatCtx->streams[i]->codec->codec_type == AVMEDIA_TYPE_AUDIO)

        {

            audioStream = i;

            break;

        }

    }



    if (audioStream == -1) {

        printf("no audio stream\n");

        return -1;

    }



    pCodecCtx = pFormatCtx->streams[audioStream]->codec; 



    printf(" codec_id   = 0x%08X\n", pCodecCtx->codec_id);

    printf(" nb_samples = %d\n", pCodecCtx->frame_size);

    printf(" format     = %d\n", pCodecCtx->sample_fmt);



    pCodec = avcodec_find_decoder(pCodecCtx->codec_id); 

    if (pCodec == NULL) {

        printf("avcodec_find_decoder error\n");

        return -1;

    }





    // Inform the codec that we can handle truncated bitstreams

    // bitstreams where frame boundaries can fall in the middle of packets

    if (pCodec->capabilities &amp; AV_CODEC_CAP_TRUNCATED)

    {

        pCodecCtx->flags |= AV_CODEC_CAP_TRUNCATED;

    }



    if (avcodec_open2(pCodecCtx, pCodec, NULL) &lt; 0) {

        printf("avcodec_open error\n");

        return -1;

    }



    struct SwrContext *swr = swr_alloc();

    av_opt_set_int(swr, "in_channel_layout",  pCodecCtx->channel_layout, 0);

    av_opt_set_int(swr, "out_channel_layout", AV_CH_LAYOUT_STEREO,  0);

    av_opt_set_int(swr, "in_sample_rate",     pCodecCtx->sample_rate, 0);

    av_opt_set_int(swr, "out_sample_rate",    pCodecCtx->sample_rate, 0);

    av_opt_set_sample_fmt(swr, "in_sample_fmt",  pCodecCtx->sample_fmt, 0);

    av_opt_set_sample_fmt(swr, "out_sample_fmt", AV_SAMPLE_FMT_S16,  0);

    swr_init(swr);



    // Hack to correct wrong frame rates that seem to be generated by some 

    // codecs



    pFrame = av_frame_alloc();



    pFrame->nb_samples     = pCodecCtx->frame_size;

    pFrame->format         = pCodecCtx->sample_fmt;

    pFrame->channel_layout = pCodecCtx->channel_layout;

    pFrame->sample_rate    = pCodecCtx->sample_rate;

    av_frame_set_channels(pFrame, pCodecCtx->channels);



    snd_pcm_t *handle = pcm_init(pFrame->sample_rate);



    printf(" == PCM init ==\n");



    int got_frame;

    //int data_size;

    int dst_linesize = 0;

    uint8_t **dst_data = NULL;



    av_samples_alloc_array_and_samples(&amp;dst_data, &amp;dst_linesize, 2, 

            pFrame->nb_samples, AV_SAMPLE_FMT_S16, 0);



    printf("dst_data = %p\tnb_samples = %d\n", dst_data, pFrame->nb_samples);



    while(av_read_frame(pFormatCtx, &amp;packet) >= 0) 

    {

        if (packet.stream_index == audioStream)

        {

            pktdata = packet.data;

            pktsize = packet.size;





            while (pktsize > 0)

            {

                got_frame = 0;

                int len = avcodec_decode_audio4(pCodecCtx, pFrame, &amp;got_frame, &amp;packet);

                //data_size = av_samples_get_buffer_size(NULL, pCodecCtx->channels, 

                //  pFrame->nb_samples, pCodecCtx->sample_fmt, 1);



                if (len &lt; 0) {

                    printf("error\n");

                    break;

                }



                if (got_frame > 0) {

                    i = swr_convert(swr, dst_data, pFrame->nb_samples, (const uint8_t **)pFrame->data, pFrame->nb_samples);

                    // printf("i = %d\n", i);

                    res = snd_pcm_writei(handle, dst_data[0], pFrame->nb_samples);

                    if (res == -EPIPE) {

                        // EPIPE means underrun

                        printf("underrun occurred\n");

                        snd_pcm_prepare(handle);

                    } else if (res &lt; 0) {

                        printf("error from writei: %s\n", snd_strerror(res));

                        break;

                    }

                }



                pktsize -= len;

                pktdata += len;

            }

            av_free_packet(&amp;packet);

        }

    }



    av_freep(&amp;dst_data[0]);



    av_frame_free(&amp;pFrame);

    avcodec_close(pCodecCtx);

    avformat_close_input(&amp;pFormatCtx);



    return 0;

}

******By Running the Above Code :******

gcc -std=c99 2.c -o main -I./include -L./lib -lavformat -lavcodec -lswscale -lavdevice -lavfilter -lswresample -lavutil -lpthread -lm -lasound -lrt -lz

From the Above Code I Got the Errors like this ?

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:345 : undefined reference to

av_buffer_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:345: undefined reference to

av_buffer_ref’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:346 : undefined reference to

av_buffer_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:346: undefined reference to

av_buffer_ref’
/usr/local/lib/libavcodec.a(mpegpicture.o) : In function

ff_free_picture_tables':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:472: undefined reference to

av_buffer_unref’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:473 : undefined reference to

av_buffer_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:474: undefined reference to

av_buffer_unref’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:475 : undefined reference to

av_buffer_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:476: undefined reference to

av_buffer_unref’
/usr/local/lib/libavcodec.a(mpegpicture.o) :/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:477 : more undefined references to

av_buffer_unref' follow

/usr/local/lib/libavcodec.a(mpegpicture.o): In function

ff_mpeg_ref_picture’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:384 : undefined reference to

av_buffer_ref'

/usr/local/lib/libavcodec.a(mpegpicture.o): In function

ff_mpeg_unref_picture’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:311 : undefined reference to

av_frame_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:313: undefined reference to

av_buffer_unref’
/usr/local/lib/libavcodec.a(mpegpicture.o) : In function

ff_free_picture_tables':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:472: undefined reference to

av_buffer_unref’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:473 : undefined reference to

av_buffer_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:474: undefined reference to

av_buffer_unref’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:475 : undefined reference to

av_buffer_unref'

/usr/local/lib/libavcodec.a(mpegpicture.o):/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegpicture.c:476: more undefined references to

av_buffer_unref’ follow
/usr/local/lib/libavcodec.a(mpegutils.o) : In function

ff_draw_horiz_band':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegutils.c:56: undefined reference to

av_pix_fmt_desc_get’
/usr/local/lib/libavcodec.a(mpegutils.o) : In function

ff_print_debug_info2':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegutils.c:118: undefined reference to

av_malloc_array’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpegutils.c:180 : undefined reference to

av_frame_new_side_data'

/usr/local/lib/libavcodec.a(mpl2dec.o): In function

mpl2_decode_frame’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:74 : undefined reference to

av_bprint_init'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:77: undefined reference to

av_bprint_finalize’
/usr/local/lib/libavcodec.a(mpl2dec.o) : In function

mpl2_event_to_ass':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:41: undefined reference to

av_bprintf’
/usr/local/lib/libavcodec.a(mpl2dec.o) : In function

mpl2_decode_frame':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:77: undefined reference to

av_bprint_finalize’
/usr/local/lib/libavcodec.a(mpl2dec.o) : In function

mpl2_event_to_ass':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:57: undefined reference to

av_bprintf’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:42 : undefined reference to

av_bprintf'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:43: undefined reference to

av_bprintf’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:50 : undefined reference to

av_bprint_chars'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/mpl2dec.c:56: undefined reference to

av_bprintf’
/usr/local/lib/libavcodec.a(options.o) : In function

copy_context_reset':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/options.c:197: undefined reference to

av_frame_free’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/options.c:205 : undefined reference to

av_buffer_unref'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/options.c:206: undefined reference to

av_buffer_unref’
/usr/local/lib/libavcodec.a(options.o) : In function

avcodec_copy_context':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/options.c:230: undefined reference to

av_opt_copy’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/options.c:237 : undefined reference to

av_opt_copy'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/options.c:281: undefined reference to

av_buffer_ref’
/usr/local/lib/libavcodec.a(parser.o) : In function

ff_combine_frame':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/parser.c:278: undefined reference to

av_fast_realloc’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/parser.c:256 : undefined reference to

av_fast_realloc'

/usr/local/lib/libavcodec.a(pictordec.o): In function

decode_frame’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pictordec.c:126 : undefined reference to

avpriv_request_sample'

/usr/local/lib/libavcodec.a(pnm_parser.o): In function

pnm_parse’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pnm_parser.c:66 : undefined reference to

av_image_get_buffer_size'

/usr/local/lib/libavcodec.a(psd.o): In function

decode_frame’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:417 : undefined reference to

avpriv_report_missing_feature'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:408: undefined reference to

avpriv_report_missing_feature’
/usr/local/lib/libavcodec.a(psd.o) : In function

decode_header':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:216: undefined reference to

avpriv_request_sample’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:212 : undefined reference to

avpriv_request_sample'

/usr/local/lib/libavcodec.a(psd.o): In function

decode_frame’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:380 : undefined reference to

avpriv_report_missing_feature'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:384: undefined reference to

avpriv_report_missing_feature’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:356 : undefined reference to

avpriv_report_missing_feature'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:360: undefined reference to

avpriv_report_missing_feature’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:412 : undefined reference to

avpriv_report_missing_feature'

/usr/local/lib/libavcodec.a(psd.o):/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/psd.c:399: more undefined references to

avpriv_report_missing_feature’ follow
/usr/local/lib/libavcodec.a(pthread_slice.o) : In function

thread_execute':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:110: undefined reference to

avpriv_slicethread_execute’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:110 : undefined reference to

avpriv_slicethread_execute'

/usr/local/lib/libavcodec.a(pthread_slice.o): In function

ff_slice_thread_free’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:82 : undefined reference to

avpriv_slicethread_free'

/usr/local/lib/libavcodec.a(pthread_slice.o): In function

thread_execute’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:110 : undefined reference to

avpriv_slicethread_execute'

/usr/local/lib/libavcodec.a(pthread_slice.o): In function

ff_slice_thread_init’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:159 : undefined reference to

avpriv_slicethread_create'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:161: undefined reference to

avpriv_slicethread_free’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:142 : undefined reference to

av_cpu_count'

/usr/local/lib/libavcodec.a(pthread_slice.o): In function

ff_alloc_entries’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:214 : undefined reference to

av_mallocz_array'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:217: undefined reference to

av_malloc_array’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/pthread_slice.c:218 : undefined reference to

av_malloc_array'

/usr/local/lib/libavcodec.a(ptx.o): In function

ptx_decode_frame’ :
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/ptx.c:54 : undefined reference to

avpriv_request_sample'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/ptx.c:45: undefined reference to

avpriv_request_sample’
/usr/local/lib/libavcodec.a(qdrw.o) : In function

decode_frame':

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/qdrw.c:417: undefined reference to

avpriv_report_missing_feature’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/qdrw.c:466 : undefined reference to

avpriv_report_missing_feature'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/qdrw.c:395: undefined reference to

avpriv_report_missing_feature’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/qdrw.c:329 : undefined reference to

avpriv_request_sample'

/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/qdrw.c:455: undefined reference to

avpriv_request_sample’
/home/gobi/basics/packages/ffmpeg_package/ffmpeg/libavcodec/qdrw.c:326 : undefined reference to `avpriv_request_sample’

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