static int svq3_decode_frame(AVCodecContext *avctx,

                             void *data, int *data_size,

                             AVPacket *avpkt)

{

    const uint8_t *buf = avpkt->data;

    int buf_size = avpkt->size;

    MpegEncContext *const s = avctx->priv_data;

    H264Context *const h = avctx->priv_data;

    int m, mb_type;



    /* special case for last picture */

    if (buf_size == 0) {

        if (s->next_picture_ptr && !s->low_delay) {

            *(AVFrame *) data = *(AVFrame *) &s->next_picture;

            s->next_picture_ptr = NULL;

            *data_size = sizeof(AVFrame);

        }

        return 0;

    }



    init_get_bits (&s->gb, buf, 8*buf_size);



    s->mb_x = s->mb_y = h->mb_xy = 0;



    if (svq3_decode_slice_header(h))

        return -1;



    s->pict_type = h->slice_type;

    s->picture_number = h->slice_num;



    if (avctx->debug&FF_DEBUG_PICT_INFO){

        av_log(h->s.avctx, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",

               av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,

               s->adaptive_quant, s->qscale, h->slice_num);

    }



    /* for hurry_up == 5 */

    s->current_picture.pict_type = s->pict_type;

    s->current_picture.key_frame = (s->pict_type == FF_I_TYPE);



    /* Skip B-frames if we do not have reference frames. */

    if (s->last_picture_ptr == NULL && s->pict_type == FF_B_TYPE)

        return 0;

    /* Skip B-frames if we are in a hurry. */

    if (avctx->hurry_up && s->pict_type == FF_B_TYPE)

        return 0;

    /* Skip everything if we are in a hurry >= 5. */

    if (avctx->hurry_up >= 5)

        return 0;

    if (  (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE)

        ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE)

        || avctx->skip_frame >= AVDISCARD_ALL)

        return 0;



    if (s->next_p_frame_damaged) {

        if (s->pict_type == FF_B_TYPE)

            return 0;

        else

            s->next_p_frame_damaged = 0;

    }



    if (frame_start(h) < 0)

        return -1;



    if (s->pict_type == FF_B_TYPE) {

        h->frame_num_offset = (h->slice_num - h->prev_frame_num);



        if (h->frame_num_offset < 0) {

            h->frame_num_offset += 256;

        }

        if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {

            av_log(h->s.avctx, AV_LOG_ERROR, "error in B-frame picture id\n");

            return -1;

        }

    } else {

        h->prev_frame_num = h->frame_num;

        h->frame_num = h->slice_num;

        h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);



        if (h->prev_frame_num_offset < 0) {

            h->prev_frame_num_offset += 256;

        }

    }



    for (m = 0; m < 2; m++){

        int i;

        for (i = 0; i < 4; i++){

            int j;

            for (j = -1; j < 4; j++)

                h->ref_cache[m][scan8[0] + 8*i + j]= 1;

            if (i < 3)

                h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;

        }

    }



    for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {

        for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {

            h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;



            if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&

                ((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) {



                skip_bits(&s->gb, h->next_slice_index - get_bits_count(&s->gb));

                s->gb.size_in_bits = 8*buf_size;



                if (svq3_decode_slice_header(h))

                    return -1;



                /* TODO: support s->mb_skip_run */

            }



            mb_type = svq3_get_ue_golomb(&s->gb);



            if (s->pict_type == FF_I_TYPE) {

                mb_type += 8;

            } else if (s->pict_type == FF_B_TYPE && mb_type >= 4) {

                mb_type += 4;

            }

            if (mb_type > 33 || svq3_decode_mb(h, mb_type)) {

                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);

                return -1;

            }



            if (mb_type != 0) {

                hl_decode_mb (h);

            }



            if (s->pict_type != FF_B_TYPE && !s->low_delay) {

                s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] =

                    (s->pict_type == FF_P_TYPE && mb_type < 8) ? (mb_type - 1) : -1;

            }

        }



        ff_draw_horiz_band(s, 16*s->mb_y, 16);

    }



    MPV_frame_end(s);



    if (s->pict_type == FF_B_TYPE || s->low_delay) {

        *(AVFrame *) data = *(AVFrame *) &s->current_picture;

    } else {

        *(AVFrame *) data = *(AVFrame *) &s->last_picture;

    }



    avctx->frame_number = s->picture_number - 1;



    /* Do not output the last pic after seeking. */

    if (s->last_picture_ptr || s->low_delay) {

        *data_size = sizeof(AVFrame);

    }



    return buf_size;

}

static int svq3_decode_frame(AVCodecContext *avctx,

                             void *data, int *data_size,

                             AVPacket *avpkt)

{

    const uint8_t *buf = avpkt->data;

    int buf_size = avpkt->size;

    MpegEncContext *const s = avctx->priv_data;

    H264Context *const h = avctx->priv_data;

    int m, mb_type;



    

    if (buf_size == 0) {

        if (s->next_picture_ptr && !s->low_delay) {

            *(AVFrame *) data = *(AVFrame *) &s->next_picture;

            s->next_picture_ptr = NULL;

            *data_size = sizeof(AVFrame);

        }

        return 0;

    }



    init_get_bits (&s->gb, buf, 8*buf_size);



    s->mb_x = s->mb_y = h->mb_xy = 0;



    if (svq3_decode_slice_header(h))

        return -1;



    s->pict_type = h->slice_type;

    s->picture_number = h->slice_num;



    if (avctx->debug&FF_DEBUG_PICT_INFO){

        av_log(h->s.avctx, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",

               av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,

               s->adaptive_quant, s->qscale, h->slice_num);

    }



    

    s->current_picture.pict_type = s->pict_type;

    s->current_picture.key_frame = (s->pict_type == FF_I_TYPE);



    

    if (s->last_picture_ptr == NULL && s->pict_type == FF_B_TYPE)

        return 0;

    

    if (avctx->hurry_up && s->pict_type == FF_B_TYPE)

        return 0;

    

    if (avctx->hurry_up >= 5)

        return 0;

    if (  (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE)

        ||(avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE)

        || avctx->skip_frame >= AVDISCARD_ALL)

        return 0;



    if (s->next_p_frame_damaged) {

        if (s->pict_type == FF_B_TYPE)

            return 0;

        else

            s->next_p_frame_damaged = 0;

    }



    if (frame_start(h) < 0)

        return -1;



    if (s->pict_type == FF_B_TYPE) {

        h->frame_num_offset = (h->slice_num - h->prev_frame_num);



        if (h->frame_num_offset < 0) {

            h->frame_num_offset += 256;

        }

        if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {

            av_log(h->s.avctx, AV_LOG_ERROR, "error in B-frame picture id\n");

            return -1;

        }

    } else {

        h->prev_frame_num = h->frame_num;

        h->frame_num = h->slice_num;

        h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);



        if (h->prev_frame_num_offset < 0) {

            h->prev_frame_num_offset += 256;

        }

    }



    for (m = 0; m < 2; m++){

        int i;

        for (i = 0; i < 4; i++){

            int j;

            for (j = -1; j < 4; j++)

                h->ref_cache[m][scan8[0] + 8*i + j]= 1;

            if (i < 3)

                h->ref_cache[m][scan8[0] + 8*i + j]= PART_NOT_AVAILABLE;

        }

    }



    for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {

        for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {

            h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;



            if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&

                ((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) {



                skip_bits(&s->gb, h->next_slice_index - get_bits_count(&s->gb));

                s->gb.size_in_bits = 8*buf_size;



                if (svq3_decode_slice_header(h))

                    return -1;



                

            }



            mb_type = svq3_get_ue_golomb(&s->gb);



            if (s->pict_type == FF_I_TYPE) {

                mb_type += 8;

            } else if (s->pict_type == FF_B_TYPE && mb_type >= 4) {

                mb_type += 4;

            }

            if (mb_type > 33 || svq3_decode_mb(h, mb_type)) {

                av_log(h->s.avctx, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);

                return -1;

            }



            if (mb_type != 0) {

                hl_decode_mb (h);

            }



            if (s->pict_type != FF_B_TYPE && !s->low_delay) {

                s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride] =

                    (s->pict_type == FF_P_TYPE && mb_type < 8) ? (mb_type - 1) : -1;

            }

        }



        ff_draw_horiz_band(s, 16*s->mb_y, 16);

    }



    MPV_frame_end(s);



    if (s->pict_type == FF_B_TYPE || s->low_delay) {

        *(AVFrame *) data = *(AVFrame *) &s->current_picture;

    } else {

        *(AVFrame *) data = *(AVFrame *) &s->last_picture;

    }



    avctx->frame_number = s->picture_number - 1;



    

    if (s->last_picture_ptr || s->low_delay) {

        *data_size = sizeof(AVFrame);

    }



    return buf_size;

}

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;

    MpegEncContext *const s = VAR_0->priv_data;

    H264Context *const h = VAR_0->priv_data;

    int VAR_6, VAR_7;



    

    if (VAR_5 == 0) {

        if (s->next_picture_ptr && !s->low_delay) {

            *(AVFrame *) VAR_1 = *(AVFrame *) &s->next_picture;

            s->next_picture_ptr = NULL;

            *VAR_2 = sizeof(AVFrame);

        }

        return 0;

    }



    init_get_bits (&s->gb, VAR_4, 8*VAR_5);



    s->mb_x = s->mb_y = h->mb_xy = 0;



    if (svq3_decode_slice_header(h))

        return -1;



    s->pict_type = h->slice_type;

    s->picture_number = h->slice_num;



    if (VAR_0->debug&FF_DEBUG_PICT_INFO){

        av_log(h->s.VAR_0, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",

               av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,

               s->adaptive_quant, s->qscale, h->slice_num);

    }



    

    s->current_picture.pict_type = s->pict_type;

    s->current_picture.key_frame = (s->pict_type == FF_I_TYPE);



    

    if (s->last_picture_ptr == NULL && s->pict_type == FF_B_TYPE)

        return 0;

    

    if (VAR_0->hurry_up && s->pict_type == FF_B_TYPE)

        return 0;

    

    if (VAR_0->hurry_up >= 5)

        return 0;

    if (  (VAR_0->skip_frame >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE)

        ||(VAR_0->skip_frame >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE)

        || VAR_0->skip_frame >= AVDISCARD_ALL)

        return 0;



    if (s->next_p_frame_damaged) {

        if (s->pict_type == FF_B_TYPE)

            return 0;

        else

            s->next_p_frame_damaged = 0;

    }



    if (frame_start(h) < 0)

        return -1;



    if (s->pict_type == FF_B_TYPE) {

        h->frame_num_offset = (h->slice_num - h->prev_frame_num);



        if (h->frame_num_offset < 0) {

            h->frame_num_offset += 256;

        }

        if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) {

            av_log(h->s.VAR_0, AV_LOG_ERROR, "error in B-frame picture id\n");

            return -1;

        }

    } else {

        h->prev_frame_num = h->frame_num;

        h->frame_num = h->slice_num;

        h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num);



        if (h->prev_frame_num_offset < 0) {

            h->prev_frame_num_offset += 256;

        }

    }



    for (VAR_6 = 0; VAR_6 < 2; VAR_6++){

        int VAR_8;

        for (VAR_8 = 0; VAR_8 < 4; VAR_8++){

            int VAR_9;

            for (VAR_9 = -1; VAR_9 < 4; VAR_9++)

                h->ref_cache[VAR_6][scan8[0] + 8*VAR_8 + VAR_9]= 1;

            if (VAR_8 < 3)

                h->ref_cache[VAR_6][scan8[0] + 8*VAR_8 + VAR_9]= PART_NOT_AVAILABLE;

        }

    }



    for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) {

        for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) {

            h->mb_xy = s->mb_x + s->mb_y*s->mb_stride;



            if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&

                ((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) {



                skip_bits(&s->gb, h->next_slice_index - get_bits_count(&s->gb));

                s->gb.size_in_bits = 8*VAR_5;



                if (svq3_decode_slice_header(h))

                    return -1;



                

            }



            VAR_7 = svq3_get_ue_golomb(&s->gb);



            if (s->pict_type == FF_I_TYPE) {

                VAR_7 += 8;

            } else if (s->pict_type == FF_B_TYPE && VAR_7 >= 4) {

                VAR_7 += 4;

            }

            if (VAR_7 > 33 || svq3_decode_mb(h, VAR_7)) {

                av_log(h->s.VAR_0, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y);

                return -1;

            }



            if (VAR_7 != 0) {

                hl_decode_mb (h);

            }



            if (s->pict_type != FF_B_TYPE && !s->low_delay) {

                s->current_picture.VAR_7[s->mb_x + s->mb_y*s->mb_stride] =

                    (s->pict_type == FF_P_TYPE && VAR_7 < 8) ? (VAR_7 - 1) : -1;

            }

        }



        ff_draw_horiz_band(s, 16*s->mb_y, 16);

    }



    MPV_frame_end(s);



    if (s->pict_type == FF_B_TYPE || s->low_delay) {

        *(AVFrame *) VAR_1 = *(AVFrame *) &s->current_picture;

    } else {

        *(AVFrame *) VAR_1 = *(AVFrame *) &s->last_picture;

    }



    VAR_0->frame_number = s->picture_number - 1;



    

    if (s->last_picture_ptr || s->low_delay) {

        *VAR_2 = sizeof(AVFrame);

    }



    return VAR_5;

}

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; MpegEncContext *const s = VAR_0->priv_data; H264Context *const h = VAR_0->priv_data; int VAR_6, VAR_7; if (VAR_5 == 0) { if (s->next_picture_ptr && !s->low_delay) { *(AVFrame *) VAR_1 = *(AVFrame *) &s->next_picture; s->next_picture_ptr = NULL; *VAR_2 = sizeof(AVFrame); } return 0; } init_get_bits (&s->gb, VAR_4, 8*VAR_5); s->mb_x = s->mb_y = h->mb_xy = 0; if (svq3_decode_slice_header(h))
return -1; s->pict_type = h->slice_type; s->picture_number = h->slice_num; if (VAR_0->debug&FF_DEBUG_PICT_INFO){ av_log(h->s.VAR_0, AV_LOG_DEBUG, "%c hpel:%d, tpel:%d aqp:%d qp:%d, slice_num:%02X\n",
av_get_pict_type_char(s->pict_type), h->halfpel_flag, h->thirdpel_flag,
s->adaptive_quant, s->qscale, h->slice_num); } s->current_picture.pict_type = s->pict_type; s->current_picture.key_frame = (s->pict_type == FF_I_TYPE); if (s->last_picture_ptr == NULL && s->pict_type == FF_B_TYPE)
return 0; if (VAR_0->hurry_up && s->pict_type == FF_B_TYPE)
return 0; if (VAR_0->hurry_up >= 5)
return 0; if (  (VAR_0->skip_frame >= AVDISCARD_NONREF && s->pict_type == FF_B_TYPE)
||(VAR_0->skip_frame >= AVDISCARD_NONKEY && s->pict_type != FF_I_TYPE)
|| VAR_0->skip_frame >= AVDISCARD_ALL)
return 0; if (s->next_p_frame_damaged) { if (s->pict_type == FF_B_TYPE)
return 0; else
s->next_p_frame_damaged = 0; } if (frame_start(h) < 0)
return -1; if (s->pict_type == FF_B_TYPE) { h->frame_num_offset = (h->slice_num - h->prev_frame_num); if (h->frame_num_offset < 0) { h->frame_num_offset += 256; } if (h->frame_num_offset == 0 || h->frame_num_offset >= h->prev_frame_num_offset) { av_log(h->s.VAR_0, AV_LOG_ERROR, "error in B-frame picture id\n"); return -1; } } else { h->prev_frame_num = h->frame_num; h->frame_num = h->slice_num; h->prev_frame_num_offset = (h->frame_num - h->prev_frame_num); if (h->prev_frame_num_offset < 0) { h->prev_frame_num_offset += 256; } } for (VAR_6 = 0; VAR_6 < 2; VAR_6++){ int VAR_8; for (VAR_8 = 0; VAR_8 < 4; VAR_8++){ int VAR_9; for (VAR_9 = -1; VAR_9 < 4; VAR_9++) h->ref_cache[VAR_6][scan8[0] + 8*VAR_8 + VAR_9]= 1; if (VAR_8 < 3)
h->ref_cache[VAR_6][scan8[0] + 8*VAR_8 + VAR_9]= PART_NOT_AVAILABLE; } } for (s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { for (s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { h->mb_xy = s->mb_x + s->mb_y*s->mb_stride; if ( (get_bits_count(&s->gb) + 7) >= s->gb.size_in_bits &&
((get_bits_count(&s->gb) & 7) == 0 || show_bits(&s->gb, (-get_bits_count(&s->gb) & 7)) == 0)) { skip_bits(&s->gb, h->next_slice_index - get_bits_count(&s->gb)); s->gb.size_in_bits = 8*VAR_5; if (svq3_decode_slice_header(h))
return -1; } VAR_7 = svq3_get_ue_golomb(&s->gb); if (s->pict_type == FF_I_TYPE) { VAR_7 += 8; } else if (s->pict_type == FF_B_TYPE && VAR_7 >= 4) { VAR_7 += 4; } if (VAR_7 > 33 || svq3_decode_mb(h, VAR_7)) { av_log(h->s.VAR_0, AV_LOG_ERROR, "error while decoding MB %d %d\n", s->mb_x, s->mb_y); return -1; } if (VAR_7 != 0) { hl_decode_mb (h); } if (s->pict_type != FF_B_TYPE && !s->low_delay) { s->current_picture.VAR_7[s->mb_x + s->mb_y*s->mb_stride] =
(s->pict_type == FF_P_TYPE && VAR_7 < 8) ? (VAR_7 - 1) : -1; } } ff_draw_horiz_band(s, 16*s->mb_y, 16); } MPV_frame_end(s); if (s->pict_type == FF_B_TYPE || s->low_delay) { *(AVFrame *) VAR_1 = *(AVFrame *) &s->current_picture; } else { *(AVFrame *) VAR_1 = *(AVFrame *) &s->last_picture; } VAR_0->frame_number = s->picture_number - 1; if (s->last_picture_ptr || s->low_delay) { *VAR_2 = sizeof(AVFrame); } return VAR_5; }