static int pnm_decode_frame(AVCodecContext *avctx, void *data,

                            int *data_size, AVPacket *avpkt)

{

    const uint8_t *buf   = avpkt->data;

    int buf_size         = avpkt->size;

    PNMContext * const s = avctx->priv_data;

    AVFrame *picture     = data;

    AVFrame * const p    = (AVFrame*)&s->picture;

    int i, j, n, linesize, h, upgrade = 0;

    unsigned char *ptr;

    int components, sample_len;



    s->bytestream_start =

    s->bytestream       = buf;

    s->bytestream_end   = buf + buf_size;



    if (ff_pnm_decode_header(avctx, s) < 0)

        return -1;



    if (p->data[0])

        avctx->release_buffer(avctx, p);



    p->reference = 0;

    if (avctx->get_buffer(avctx, p) < 0) {

        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

        return -1;

    }

    p->pict_type = AV_PICTURE_TYPE_I;

    p->key_frame = 1;



    switch (avctx->pix_fmt) {

    default:

        return -1;

    case PIX_FMT_RGB48BE:

        n = avctx->width * 6;

        components=3;

        sample_len=16;

        goto do_read;

    case PIX_FMT_RGB24:

        n = avctx->width * 3;

        components=3;

        sample_len=8;

        goto do_read;

    case PIX_FMT_GRAY8:

        n = avctx->width;

        components=1;

        sample_len=8;

        if (s->maxval < 255)

            upgrade = 1;

        goto do_read;

    case PIX_FMT_GRAY16BE:

    case PIX_FMT_GRAY16LE:

        n = avctx->width * 2;

        components=1;

        sample_len=16;

        if (s->maxval < 65535)

            upgrade = 2;

        goto do_read;

    case PIX_FMT_MONOWHITE:

    case PIX_FMT_MONOBLACK:

        n = (avctx->width + 7) >> 3;

        components=1;

        sample_len=1;

    do_read:

        ptr      = p->data[0];

        linesize = p->linesize[0];

        if (s->bytestream + n * avctx->height > s->bytestream_end)

            return -1;

        if(s->type < 4){

            for (i=0; i<avctx->height; i++) {

                PutBitContext pb;

                init_put_bits(&pb, ptr, linesize);

                for(j=0; j<avctx->width * components; j++){

                    unsigned int c=0;

                    int v=0;

                    while(s->bytestream < s->bytestream_end && (*s->bytestream < '0' || *s->bytestream > '9' ))

                        s->bytestream++;

                    if(s->bytestream >= s->bytestream_end)

                        return -1;

                    do{

                        v= 10*v + c;

                        c= (*s->bytestream++) - '0';

                    }while(c <= 9);

                    put_bits(&pb, sample_len, (((1<<sample_len)-1)*v + (s->maxval>>1))/s->maxval);

                }

                flush_put_bits(&pb);

                ptr+= linesize;

            }

        }else{

        for (i = 0; i < avctx->height; i++) {

            if (!upgrade)

                memcpy(ptr, s->bytestream, n);

            else if (upgrade == 1) {

                unsigned int j, f = (255 * 128 + s->maxval / 2) / s->maxval;

                for (j = 0; j < n; j++)

                    ptr[j] = (s->bytestream[j] * f + 64) >> 7;

            } else if (upgrade == 2) {

                unsigned int j, v, f = (65535 * 32768 + s->maxval / 2) / s->maxval;

                for (j = 0; j < n / 2; j++) {

                    v = av_be2ne16(((uint16_t *)s->bytestream)[j]);

                    ((uint16_t *)ptr)[j] = (v * f + 16384) >> 15;

                }

            }

            s->bytestream += n;

            ptr           += linesize;

        }

        }

        break;

    case PIX_FMT_YUV420P:

        {

            unsigned char *ptr1, *ptr2;



            n        = avctx->width;

            ptr      = p->data[0];

            linesize = p->linesize[0];

            if (s->bytestream + n * avctx->height * 3 / 2 > s->bytestream_end)

                return -1;

            for (i = 0; i < avctx->height; i++) {

                memcpy(ptr, s->bytestream, n);

                s->bytestream += n;

                ptr           += linesize;

            }

            ptr1 = p->data[1];

            ptr2 = p->data[2];

            n >>= 1;

            h = avctx->height >> 1;

            for (i = 0; i < h; i++) {

                memcpy(ptr1, s->bytestream, n);

                s->bytestream += n;

                memcpy(ptr2, s->bytestream, n);

                s->bytestream += n;

                ptr1 += p->linesize[1];

                ptr2 += p->linesize[2];

            }

        }

        break;

    case PIX_FMT_RGB32:

        ptr      = p->data[0];

        linesize = p->linesize[0];

        if (s->bytestream + avctx->width * avctx->height * 4 > s->bytestream_end)

            return -1;

        for (i = 0; i < avctx->height; i++) {

            int j, r, g, b, a;



            for (j = 0; j < avctx->width; j++) {

                r = *s->bytestream++;

                g = *s->bytestream++;

                b = *s->bytestream++;

                a = *s->bytestream++;

                ((uint32_t *)ptr)[j] = (a << 24) | (r << 16) | (g << 8) | b;

            }

            ptr += linesize;

        }

        break;

    }

    *picture   = *(AVFrame*)&s->picture;

    *data_size = sizeof(AVPicture);



    return s->bytestream - s->bytestream_start;

}

static int pnm_decode_frame(AVCodecContext *avctx, void *data,

                            int *data_size, AVPacket *avpkt)

{

    const uint8_t *buf   = avpkt->data;

    int buf_size         = avpkt->size;

    PNMContext * const s = avctx->priv_data;

    AVFrame *picture     = data;

    AVFrame * const p    = (AVFrame*)&s->picture;

    int i, j, n, linesize, h, upgrade = 0;

    unsigned char *ptr;

    int components, sample_len;



    s->bytestream_start =

    s->bytestream       = buf;

    s->bytestream_end   = buf + buf_size;



    if (ff_pnm_decode_header(avctx, s) < 0)

        return -1;



    if (p->data[0])

        avctx->release_buffer(avctx, p);



    p->reference = 0;

    if (avctx->get_buffer(avctx, p) < 0) {

        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");

        return -1;

    }

    p->pict_type = AV_PICTURE_TYPE_I;

    p->key_frame = 1;



    switch (avctx->pix_fmt) {

    default:

        return -1;

    case PIX_FMT_RGB48BE:

        n = avctx->width * 6;

        components=3;

        sample_len=16;

        goto do_read;

    case PIX_FMT_RGB24:

        n = avctx->width * 3;

        components=3;

        sample_len=8;

        goto do_read;

    case PIX_FMT_GRAY8:

        n = avctx->width;

        components=1;

        sample_len=8;

        if (s->maxval < 255)

            upgrade = 1;

        goto do_read;

    case PIX_FMT_GRAY16BE:

    case PIX_FMT_GRAY16LE:

        n = avctx->width * 2;

        components=1;

        sample_len=16;

        if (s->maxval < 65535)

            upgrade = 2;

        goto do_read;

    case PIX_FMT_MONOWHITE:

    case PIX_FMT_MONOBLACK:

        n = (avctx->width + 7) >> 3;

        components=1;

        sample_len=1;

    do_read:

        ptr      = p->data[0];

        linesize = p->linesize[0];

        if (s->bytestream + n * avctx->height > s->bytestream_end)

            return -1;

        if(s->type < 4){

            for (i=0; i<avctx->height; i++) {

                PutBitContext pb;

                init_put_bits(&pb, ptr, linesize);

                for(j=0; j<avctx->width * components; j++){

                    unsigned int c=0;

                    int v=0;

                    while(s->bytestream < s->bytestream_end && (*s->bytestream < '0' || *s->bytestream > '9' ))

                        s->bytestream++;

                    if(s->bytestream >= s->bytestream_end)

                        return -1;

                    do{

                        v= 10*v + c;

                        c= (*s->bytestream++) - '0';

                    }while(c <= 9);

                    put_bits(&pb, sample_len, (((1<<sample_len)-1)*v + (s->maxval>>1))/s->maxval);

                }

                flush_put_bits(&pb);

                ptr+= linesize;

            }

        }else{

        for (i = 0; i < avctx->height; i++) {

            if (!upgrade)

                memcpy(ptr, s->bytestream, n);

            else if (upgrade == 1) {

                unsigned int j, f = (255 * 128 + s->maxval / 2) / s->maxval;

                for (j = 0; j < n; j++)

                    ptr[j] = (s->bytestream[j] * f + 64) >> 7;

            } else if (upgrade == 2) {

                unsigned int j, v, f = (65535 * 32768 + s->maxval / 2) / s->maxval;

                for (j = 0; j < n / 2; j++) {

                    v = av_be2ne16(((uint16_t *)s->bytestream)[j]);

                    ((uint16_t *)ptr)[j] = (v * f + 16384) >> 15;

                }

            }

            s->bytestream += n;

            ptr           += linesize;

        }

        }

        break;

    case PIX_FMT_YUV420P:

        {

            unsigned char *ptr1, *ptr2;



            n        = avctx->width;

            ptr      = p->data[0];

            linesize = p->linesize[0];

            if (s->bytestream + n * avctx->height * 3 / 2 > s->bytestream_end)

                return -1;

            for (i = 0; i < avctx->height; i++) {

                memcpy(ptr, s->bytestream, n);

                s->bytestream += n;

                ptr           += linesize;

            }

            ptr1 = p->data[1];

            ptr2 = p->data[2];

            n >>= 1;

            h = avctx->height >> 1;

            for (i = 0; i < h; i++) {

                memcpy(ptr1, s->bytestream, n);

                s->bytestream += n;

                memcpy(ptr2, s->bytestream, n);

                s->bytestream += n;

                ptr1 += p->linesize[1];

                ptr2 += p->linesize[2];

            }

        }

        break;

    case PIX_FMT_RGB32:

        ptr      = p->data[0];

        linesize = p->linesize[0];

        if (s->bytestream + avctx->width * avctx->height * 4 > s->bytestream_end)

            return -1;

        for (i = 0; i < avctx->height; i++) {

            int j, r, g, b, a;



            for (j = 0; j < avctx->width; j++) {

                r = *s->bytestream++;

                g = *s->bytestream++;

                b = *s->bytestream++;

                a = *s->bytestream++;

                ((uint32_t *)ptr)[j] = (a << 24) | (r << 16) | (g << 8) | b;

            }

            ptr += linesize;

        }

        break;

    }

    *picture   = *(AVFrame*)&s->picture;

    *data_size = sizeof(AVPicture);



    return s->bytestream - s->bytestream_start;

}

    int i, j, n, linesize, h, upgrade = 0;
static int FUNC_0(AVCodecContext *VAR_0, void *VAR_1,

                            int *VAR_2, AVPacket *VAR_3)

{

    const uint8_t *VAR_4   = VAR_3->VAR_1;

    int VAR_5         = VAR_3->size;

    PNMContext * const s = VAR_0->priv_data;

    AVFrame *picture     = VAR_1;

    AVFrame * const p    = (AVFrame*)&s->picture;

    int VAR_6, VAR_7, VAR_8, VAR_9, VAR_10, VAR_11 = 0;

    unsigned char *VAR_12;

    int VAR_13, VAR_14;



    s->bytestream_start =

    s->bytestream       = VAR_4;

    s->bytestream_end   = VAR_4 + VAR_5;



    if (ff_pnm_decode_header(VAR_0, s) < 0)

        return -1;



    if (p->VAR_1[0])

        VAR_0->release_buffer(VAR_0, p);



    p->reference = 0;

    if (VAR_0->get_buffer(VAR_0, p) < 0) {

        av_log(VAR_0, AV_LOG_ERROR, "get_buffer() failed\VAR_8");

        return -1;

    }

    p->pict_type = AV_PICTURE_TYPE_I;

    p->key_frame = 1;



    switch (VAR_0->pix_fmt) {

    default:

        return -1;

    case PIX_FMT_RGB48BE:

        VAR_8 = VAR_0->width * 6;

        VAR_13=3;

        VAR_14=16;

        goto do_read;

    case PIX_FMT_RGB24:

        VAR_8 = VAR_0->width * 3;

        VAR_13=3;

        VAR_14=8;

        goto do_read;

    case PIX_FMT_GRAY8:

        VAR_8 = VAR_0->width;

        VAR_13=1;

        VAR_14=8;

        if (s->maxval < 255)

            VAR_11 = 1;

        goto do_read;

    case PIX_FMT_GRAY16BE:

    case PIX_FMT_GRAY16LE:

        VAR_8 = VAR_0->width * 2;

        VAR_13=1;

        VAR_14=16;

        if (s->maxval < 65535)

            VAR_11 = 2;

        goto do_read;

    case PIX_FMT_MONOWHITE:

    case PIX_FMT_MONOBLACK:

        VAR_8 = (VAR_0->width + 7) >> 3;

        VAR_13=1;

        VAR_14=1;

    do_read:

        VAR_12      = p->VAR_1[0];

        VAR_9 = p->VAR_9[0];

        if (s->bytestream + VAR_8 * VAR_0->height > s->bytestream_end)

            return -1;

        if(s->type < 4){

            for (VAR_6=0; VAR_6<VAR_0->height; VAR_6++) {

                PutBitContext pb;

                init_put_bits(&pb, VAR_12, VAR_9);

                for(VAR_7=0; VAR_7<VAR_0->width * VAR_13; VAR_7++){

                    unsigned int c=0;

                    int v=0;

                    while(s->bytestream < s->bytestream_end && (*s->bytestream < '0' || *s->bytestream > '9' ))

                        s->bytestream++;

                    if(s->bytestream >= s->bytestream_end)

                        return -1;

                    do{

                        v= 10*v + c;

                        c= (*s->bytestream++) - '0';

                    }while(c <= 9);

                    put_bits(&pb, VAR_14, (((1<<VAR_14)-1)*v + (s->maxval>>1))/s->maxval);

                }

                flush_put_bits(&pb);

                VAR_12+= VAR_9;

            }

        }else{

        for (VAR_6 = 0; VAR_6 < VAR_0->height; VAR_6++) {

            if (!VAR_11)

                memcpy(VAR_12, s->bytestream, VAR_8);

            else if (VAR_11 == 1) {

                unsigned int VAR_7, f = (255 * 128 + s->maxval / 2) / s->maxval;

                for (VAR_7 = 0; VAR_7 < VAR_8; VAR_7++)

                    VAR_12[VAR_7] = (s->bytestream[VAR_7] * f + 64) >> 7;

            } else if (VAR_11 == 2) {

                unsigned int VAR_7, v, f = (65535 * 32768 + s->maxval / 2) / s->maxval;

                for (VAR_7 = 0; VAR_7 < VAR_8 / 2; VAR_7++) {

                    v = av_be2ne16(((uint16_t *)s->bytestream)[VAR_7]);

                    ((uint16_t *)VAR_12)[VAR_7] = (v * f + 16384) >> 15;

                }

            }

            s->bytestream += VAR_8;

            VAR_12           += VAR_9;

        }

        }

        break;

    case PIX_FMT_YUV420P:

        {

            unsigned char *VAR_15, *VAR_16;



            VAR_8        = VAR_0->width;

            VAR_12      = p->VAR_1[0];

            VAR_9 = p->VAR_9[0];

            if (s->bytestream + VAR_8 * VAR_0->height * 3 / 2 > s->bytestream_end)

                return -1;

            for (VAR_6 = 0; VAR_6 < VAR_0->height; VAR_6++) {

                memcpy(VAR_12, s->bytestream, VAR_8);

                s->bytestream += VAR_8;

                VAR_12           += VAR_9;

            }

            VAR_15 = p->VAR_1[1];

            VAR_16 = p->VAR_1[2];

            VAR_8 >>= 1;

            VAR_10 = VAR_0->height >> 1;

            for (VAR_6 = 0; VAR_6 < VAR_10; VAR_6++) {

                memcpy(VAR_15, s->bytestream, VAR_8);

                s->bytestream += VAR_8;

                memcpy(VAR_16, s->bytestream, VAR_8);

                s->bytestream += VAR_8;

                VAR_15 += p->VAR_9[1];

                VAR_16 += p->VAR_9[2];

            }

        }

        break;

    case PIX_FMT_RGB32:

        VAR_12      = p->VAR_1[0];

        VAR_9 = p->VAR_9[0];

        if (s->bytestream + VAR_0->width * VAR_0->height * 4 > s->bytestream_end)

            return -1;

        for (VAR_6 = 0; VAR_6 < VAR_0->height; VAR_6++) {

            int VAR_7, r, g, b, a;



            for (VAR_7 = 0; VAR_7 < VAR_0->width; VAR_7++) {

                r = *s->bytestream++;

                g = *s->bytestream++;

                b = *s->bytestream++;

                a = *s->bytestream++;

                ((uint32_t *)VAR_12)[VAR_7] = (a << 24) | (r << 16) | (g << 8) | b;

            }

            VAR_12 += VAR_9;

        }

        break;

    }

    *picture   = *(AVFrame*)&s->picture;

    *VAR_2 = sizeof(AVPicture);



    return s->bytestream - s->bytestream_start;

}

static int FUNC_0(AVCodecContext *VAR_0, void *VAR_1,
int *VAR_2, AVPacket *VAR_3)
{ const uint8_t *VAR_4   = VAR_3->VAR_1; int VAR_5         = VAR_3->size; PNMContext * const s = VAR_0->priv_data; AVFrame *picture     = VAR_1; AVFrame * const p    = (AVFrame*)&s->picture; int VAR_6, VAR_7, VAR_8, VAR_9, VAR_10, VAR_11 = 0; unsigned char *VAR_12; int VAR_13, VAR_14; s->bytestream_start =
s->bytestream       = VAR_4; s->bytestream_end   = VAR_4 + VAR_5; if (ff_pnm_decode_header(VAR_0, s) < 0)
return -1; if (p->VAR_1[0])
VAR_0->release_buffer(VAR_0, p); p->reference = 0; if (VAR_0->get_buffer(VAR_0, p) < 0) { av_log(VAR_0, AV_LOG_ERROR, "get_buffer() failed\VAR_8"); return -1; } p->pict_type = AV_PICTURE_TYPE_I; p->key_frame = 1; switch (VAR_0->pix_fmt) { default:
return -1; case PIX_FMT_RGB48BE:
VAR_8 = VAR_0->width * 6; VAR_13=3; VAR_14=16; goto do_read; case PIX_FMT_RGB24:
VAR_8 = VAR_0->width * 3; VAR_13=3; VAR_14=8; goto do_read; case PIX_FMT_GRAY8:
VAR_8 = VAR_0->width; VAR_13=1; VAR_14=8; if (s->maxval < 255)
VAR_11 = 1; goto do_read; case PIX_FMT_GRAY16BE:
case PIX_FMT_GRAY16LE:
VAR_8 = VAR_0->width * 2; VAR_13=1; VAR_14=16; if (s->maxval < 65535)
VAR_11 = 2; goto do_read; case PIX_FMT_MONOWHITE:
case PIX_FMT_MONOBLACK:
VAR_8 = (VAR_0->width + 7) >> 3; VAR_13=1; VAR_14=1; do_read:
VAR_12      = p->VAR_1[0]; VAR_9 = p->VAR_9[0]; if (s->bytestream + VAR_8 * VAR_0->height > s->bytestream_end)
return -1; if(s->type < 4){ for (VAR_6=0; VAR_6<VAR_0->height; VAR_6++) { PutBitContext pb; init_put_bits(&pb, VAR_12, VAR_9); for(VAR_7=0; VAR_7<VAR_0->width * VAR_13; VAR_7++){ unsigned int c=0; int v=0; while(s->bytestream < s->bytestream_end && (*s->bytestream < '0' || *s->bytestream > '9' ))
s->bytestream++; if(s->bytestream >= s->bytestream_end)
return -1; do{ v= 10*v + c; c= (*s->bytestream++) - '0'; }while(c <= 9); put_bits(&pb, VAR_14, (((1<<VAR_14)-1)*v + (s->maxval>>1))/s->maxval); } flush_put_bits(&pb); VAR_12+= VAR_9; } }else{ for (VAR_6 = 0; VAR_6 < VAR_0->height; VAR_6++) { if (!VAR_11)
memcpy(VAR_12, s->bytestream, VAR_8); else if (VAR_11 == 1) { unsigned int VAR_7, f = (255 * 128 + s->maxval / 2) / s->maxval; for (VAR_7 = 0; VAR_7 < VAR_8; VAR_7++) VAR_12[VAR_7] = (s->bytestream[VAR_7] * f + 64) >> 7; } else if (VAR_11 == 2) { unsigned int VAR_7, v, f = (65535 * 32768 + s->maxval / 2) / s->maxval; for (VAR_7 = 0; VAR_7 < VAR_8 / 2; VAR_7++) { v = av_be2ne16(((uint16_t *)s->bytestream)[VAR_7]); ((uint16_t *)VAR_12)[VAR_7] = (v * f + 16384) >> 15; } } s->bytestream += VAR_8; VAR_12           += VAR_9; } } break; case PIX_FMT_YUV420P:
{ unsigned char *VAR_15, *VAR_16; VAR_8        = VAR_0->width; VAR_12      = p->VAR_1[0]; VAR_9 = p->VAR_9[0]; if (s->bytestream + VAR_8 * VAR_0->height * 3 / 2 > s->bytestream_end)
return -1; for (VAR_6 = 0; VAR_6 < VAR_0->height; VAR_6++) { memcpy(VAR_12, s->bytestream, VAR_8); s->bytestream += VAR_8; VAR_12           += VAR_9; } VAR_15 = p->VAR_1[1]; VAR_16 = p->VAR_1[2]; VAR_8 >>= 1; VAR_10 = VAR_0->height >> 1; for (VAR_6 = 0; VAR_6 < VAR_10; VAR_6++) { memcpy(VAR_15, s->bytestream, VAR_8); s->bytestream += VAR_8; memcpy(VAR_16, s->bytestream, VAR_8); s->bytestream += VAR_8; VAR_15 += p->VAR_9[1]; VAR_16 += p->VAR_9[2]; } } break; case PIX_FMT_RGB32:
VAR_12      = p->VAR_1[0]; VAR_9 = p->VAR_9[0]; if (s->bytestream + VAR_0->width * VAR_0->height * 4 > s->bytestream_end)
return -1; for (VAR_6 = 0; VAR_6 < VAR_0->height; VAR_6++) { int VAR_7, r, g, b, a; for (VAR_7 = 0; VAR_7 < VAR_0->width; VAR_7++) { r = *s->bytestream++; g = *s->bytestream++; b = *s->bytestream++; a = *s->bytestream++; ((uint32_t *)VAR_12)[VAR_7] = (a << 24) | (r << 16) | (g << 8) | b; } VAR_12 += VAR_9; } break; } *picture   = *(AVFrame*)&s->picture; *VAR_2 = sizeof(AVPicture); return s->bytestream - s->bytestream_start; }