int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)

{

    int id;



    id = avio_rl16(pb);

    codec->codec_type = AVMEDIA_TYPE_AUDIO;

    codec->channels = avio_rl16(pb);

    codec->sample_rate = avio_rl32(pb);

    codec->bit_rate = avio_rl32(pb) * 8;

    codec->block_align = avio_rl16(pb);

    if (size == 14) {  /* We're dealing with plain vanilla WAVEFORMAT */

        codec->bits_per_coded_sample = 8;

    }else

        codec->bits_per_coded_sample = avio_rl16(pb);

    if (id == 0xFFFE) {

        codec->codec_tag = 0;

    } else {

        codec->codec_tag = id;

        codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);

    }

    if (size >= 18) {  /* We're obviously dealing with WAVEFORMATEX */

        int cbSize = avio_rl16(pb); /* cbSize */

        size -= 18;

        cbSize = FFMIN(size, cbSize);

        if (cbSize >= 22 && id == 0xfffe) { /* WAVEFORMATEXTENSIBLE */

            ff_asf_guid subformat;

            codec->bits_per_coded_sample = avio_rl16(pb);

            codec->channel_layout = avio_rl32(pb); /* dwChannelMask */

            ff_get_guid(pb, &subformat);

            if (!memcmp(subformat + 4, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12)) {

                codec->codec_tag = AV_RL32(subformat);

                codec->codec_id = ff_wav_codec_get_id(codec->codec_tag, codec->bits_per_coded_sample);

            } else {

                codec->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);

                if (!codec->codec_id)

                    av_log(codec, AV_LOG_WARNING, "unknown subformat:"FF_PRI_GUID"\n", FF_ARG_GUID(subformat));

            }

            cbSize -= 22;

            size -= 22;

        }

        codec->extradata_size = cbSize;

        if (cbSize > 0) {

            av_free(codec->extradata);

            codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

            if (!codec->extradata)

                return AVERROR(ENOMEM);

            avio_read(pb, codec->extradata, codec->extradata_size);

            size -= cbSize;

        }



        /* It is possible for the chunk to contain garbage at the end */

        if (size > 0)

            avio_skip(pb, size);

    }

    if (codec->codec_id == CODEC_ID_AAC_LATM) {

        /* channels and sample_rate values are those prior to applying SBR and/or PS */

        codec->channels    = 0;

        codec->sample_rate = 0;

    }

    /* override bits_per_coded_sample for G.726 */

    if (codec->codec_id == CODEC_ID_ADPCM_G726)

        codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;



    return 0;

}

int ff_get_wav_header(AVIOContext *pb, AVCodecContext *codec, int size)

{

    int id;



    id = avio_rl16(pb);

    codec->codec_type = AVMEDIA_TYPE_AUDIO;

    codec->channels = avio_rl16(pb);

    codec->sample_rate = avio_rl32(pb);

    codec->bit_rate = avio_rl32(pb) * 8;

    codec->block_align = avio_rl16(pb);

    if (size == 14) {  

        codec->bits_per_coded_sample = 8;

    }else

        codec->bits_per_coded_sample = avio_rl16(pb);

    if (id == 0xFFFE) {

        codec->codec_tag = 0;

    } else {

        codec->codec_tag = id;

        codec->codec_id = ff_wav_codec_get_id(id, codec->bits_per_coded_sample);

    }

    if (size >= 18) {  

        int cbSize = avio_rl16(pb); 

        size -= 18;

        cbSize = FFMIN(size, cbSize);

        if (cbSize >= 22 && id == 0xfffe) { 

            ff_asf_guid subformat;

            codec->bits_per_coded_sample = avio_rl16(pb);

            codec->channel_layout = avio_rl32(pb); 

            ff_get_guid(pb, &subformat);

            if (!memcmp(subformat + 4, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12)) {

                codec->codec_tag = AV_RL32(subformat);

                codec->codec_id = ff_wav_codec_get_id(codec->codec_tag, codec->bits_per_coded_sample);

            } else {

                codec->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);

                if (!codec->codec_id)

                    av_log(codec, AV_LOG_WARNING, "unknown subformat:"FF_PRI_GUID"\n", FF_ARG_GUID(subformat));

            }

            cbSize -= 22;

            size -= 22;

        }

        codec->extradata_size = cbSize;

        if (cbSize > 0) {

            av_free(codec->extradata);

            codec->extradata = av_mallocz(codec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

            if (!codec->extradata)

                return AVERROR(ENOMEM);

            avio_read(pb, codec->extradata, codec->extradata_size);

            size -= cbSize;

        }



        

        if (size > 0)

            avio_skip(pb, size);

    }

    if (codec->codec_id == CODEC_ID_AAC_LATM) {

        

        codec->channels    = 0;

        codec->sample_rate = 0;

    }

    

    if (codec->codec_id == CODEC_ID_ADPCM_G726)

        codec->bits_per_coded_sample = codec->bit_rate / codec->sample_rate;



    return 0;

}

            codec->bits_per_coded_sample = avio_rl16(pb);
int FUNC_0(AVIOContext *VAR_0, AVCodecContext *VAR_1, int VAR_2)

{

    int VAR_3;



    VAR_3 = avio_rl16(VAR_0);

    VAR_1->codec_type = AVMEDIA_TYPE_AUDIO;

    VAR_1->channels = avio_rl16(VAR_0);

    VAR_1->sample_rate = avio_rl32(VAR_0);

    VAR_1->bit_rate = avio_rl32(VAR_0) * 8;

    VAR_1->block_align = avio_rl16(VAR_0);

    if (VAR_2 == 14) {  

        VAR_1->bits_per_coded_sample = 8;

    }else

        VAR_1->bits_per_coded_sample = avio_rl16(VAR_0);

    if (VAR_3 == 0xFFFE) {

        VAR_1->codec_tag = 0;

    } else {

        VAR_1->codec_tag = VAR_3;

        VAR_1->codec_id = ff_wav_codec_get_id(VAR_3, VAR_1->bits_per_coded_sample);

    }

    if (VAR_2 >= 18) {  

        int VAR_4 = avio_rl16(VAR_0); 

        VAR_2 -= 18;

        VAR_4 = FFMIN(VAR_2, VAR_4);

        if (VAR_4 >= 22 && VAR_3 == 0xfffe) { 

            ff_asf_guid subformat;

            VAR_1->bits_per_coded_sample = avio_rl16(VAR_0);

            VAR_1->channel_layout = avio_rl32(VAR_0); 

            ff_get_guid(VAR_0, &subformat);

            if (!memcmp(subformat + 4, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12)) {

                VAR_1->codec_tag = AV_RL32(subformat);

                VAR_1->codec_id = ff_wav_codec_get_id(VAR_1->codec_tag, VAR_1->bits_per_coded_sample);

            } else {

                VAR_1->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat);

                if (!VAR_1->codec_id)

                    av_log(VAR_1, AV_LOG_WARNING, "unknown subformat:"FF_PRI_GUID"\n", FF_ARG_GUID(subformat));

            }

            VAR_4 -= 22;

            VAR_2 -= 22;

        }

        VAR_1->extradata_size = VAR_4;

        if (VAR_4 > 0) {

            av_free(VAR_1->extradata);

            VAR_1->extradata = av_mallocz(VAR_1->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);

            if (!VAR_1->extradata)

                return AVERROR(ENOMEM);

            avio_read(VAR_0, VAR_1->extradata, VAR_1->extradata_size);

            VAR_2 -= VAR_4;

        }



        

        if (VAR_2 > 0)

            avio_skip(VAR_0, VAR_2);

    }

    if (VAR_1->codec_id == CODEC_ID_AAC_LATM) {

        

        VAR_1->channels    = 0;

        VAR_1->sample_rate = 0;

    }

    

    if (VAR_1->codec_id == CODEC_ID_ADPCM_G726)

        VAR_1->bits_per_coded_sample = VAR_1->bit_rate / VAR_1->sample_rate;



    return 0;

}

int FUNC_0(AVIOContext *VAR_0, AVCodecContext *VAR_1, int VAR_2)
{ int VAR_3; VAR_3 = avio_rl16(VAR_0); VAR_1->codec_type = AVMEDIA_TYPE_AUDIO; VAR_1->channels = avio_rl16(VAR_0); VAR_1->sample_rate = avio_rl32(VAR_0); VAR_1->bit_rate = avio_rl32(VAR_0) * 8; VAR_1->block_align = avio_rl16(VAR_0); if (VAR_2 == 14) { VAR_1->bits_per_coded_sample = 8; }else VAR_1->bits_per_coded_sample = avio_rl16(VAR_0); if (VAR_3 == 0xFFFE) { VAR_1->codec_tag = 0; } else { VAR_1->codec_tag = VAR_3; VAR_1->codec_id = ff_wav_codec_get_id(VAR_3, VAR_1->bits_per_coded_sample); } if (VAR_2 >= 18) { int VAR_4 = avio_rl16(VAR_0); VAR_2 -= 18; VAR_4 = FFMIN(VAR_2, VAR_4); if (VAR_4 >= 22 && VAR_3 == 0xfffe) { ff_asf_guid subformat; VAR_1->bits_per_coded_sample = avio_rl16(VAR_0); VAR_1->channel_layout = avio_rl32(VAR_0); ff_get_guid(VAR_0, &subformat); if (!memcmp(subformat + 4, (const uint8_t[]){FF_MEDIASUBTYPE_BASE_GUID}, 12)) { VAR_1->codec_tag = AV_RL32(subformat); VAR_1->codec_id = ff_wav_codec_get_id(VAR_1->codec_tag, VAR_1->bits_per_coded_sample); } else { VAR_1->codec_id = ff_codec_guid_get_id(ff_codec_wav_guids, subformat); if (!VAR_1->codec_id)
av_log(VAR_1, AV_LOG_WARNING, "unknown subformat:"FF_PRI_GUID"\n", FF_ARG_GUID(subformat)); } VAR_4 -= 22; VAR_2 -= 22; } VAR_1->extradata_size = VAR_4; if (VAR_4 > 0) { av_free(VAR_1->extradata); VAR_1->extradata = av_mallocz(VAR_1->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); if (!VAR_1->extradata)
return AVERROR(ENOMEM); avio_read(VAR_0, VAR_1->extradata, VAR_1->extradata_size); VAR_2 -= VAR_4; } if (VAR_2 > 0)
avio_skip(VAR_0, VAR_2); } if (VAR_1->codec_id == CODEC_ID_AAC_LATM) { VAR_1->channels    = 0; VAR_1->sample_rate = 0; } if (VAR_1->codec_id == CODEC_ID_ADPCM_G726)
VAR_1->bits_per_coded_sample = VAR_1->bit_rate / VAR_1->sample_rate; return 0; }