ffmpeg source update for sep 09

source/patched-ffmpeg-mt/libavcodec/sp5xdec.c

 /*
  * Sunplus JPEG decoder (SP5X)
  * Copyright (c) 2003 Alex Beregszaszi
  *
  * This file is part of FFmpeg.
  *
  * FFmpeg is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Lesser General Public
  * License as published by the Free Software Foundation; either
  * version 2.1 of the License, or (at your option) any later version.
@@ skipping 19 matching lines @@
 #include "sp5x.h"
 
 
 static int sp5x_decode_frame(AVCodecContext *avctx,
                               void *data, int *data_size,
                               AVPacket *avpkt)
 {
     const uint8_t *buf = avpkt->data;
     int buf_size = avpkt->size;
     AVPacket avpkt_recoded;
-#if 0
-    MJpegDecodeContext *s = avctx->priv_data;
-#endif
     const int qscale = 5;
     const uint8_t *buf_ptr;
     uint8_t *recoded;
     int i = 0, j = 0;
 
     if (!avctx->width || !avctx->height)
         return -1;
 
     buf_ptr = buf;
 
-#if 1
     recoded = av_mallocz(buf_size + 1024);
     if (!recoded)
         return -1;
 
     /* SOI */
     recoded[j++] = 0xFF;
     recoded[j++] = 0xD8;
 
     memcpy(recoded+j, &sp5x_data_dqt[0], sizeof(sp5x_data_dqt));
     memcpy(recoded+j+5, &sp5x_quant_table[qscale * 2], 64);
@@ skipping 27 matching lines @@
     recoded[j++] = 0xD9;
 
     avctx->flags &= ~CODEC_FLAG_EMU_EDGE;
     av_init_packet(&avpkt_recoded);
     avpkt_recoded.data = recoded;
     avpkt_recoded.size = j;
     i = ff_mjpeg_decode_frame(avctx, data, data_size, &avpkt_recoded);
 
     av_free(recoded);
 
-#else
-    /* SOF */
-    s->bits = 8;
-    s->width  = avctx->coded_width;
-    s->height = avctx->coded_height;
-    s->nb_components = 3;
-    s->component_id[0] = 0;
-    s->h_count[0] = 2;
-    s->v_count[0] = 2;
-    s->quant_index[0] = 0;
-    s->component_id[1] = 1;
-    s->h_count[1] = 1;
-    s->v_count[1] = 1;
-    s->quant_index[1] = 1;
-    s->component_id[2] = 2;
-    s->h_count[2] = 1;
-    s->v_count[2] = 1;
-    s->quant_index[2] = 1;
-    s->h_max = 2;
-    s->v_max = 2;
-
-    s->qscale_table = av_mallocz((s->width+15)/16);
-    avctx->pix_fmt = s->cs_itu601 ? PIX_FMT_YUV420P : PIX_FMT_YUVJ420;
-    s->interlaced = 0;
-
-    s->picture.reference = 0;
-    if (avctx->get_buffer(avctx, &s->picture) < 0)
-    {
-        av_log(avctx, AV_LOG_ERROR, "get_buffer() failed\n");
-        return -1;
-    }
-
-    s->picture.pict_type = FF_I_TYPE;
-    s->picture.key_frame = 1;
-
-    for (i = 0; i < 3; i++)
-        s->linesize[i] = s->picture.linesize[i] << s->interlaced;
-
-    /* DQT */
-    for (i = 0; i < 64; i++)
-    {
-        j = s->scantable.permutated[i];
-        s->quant_matrixes[0][j] = sp5x_quant_table[(qscale * 2) + i];
-    }
-    s->qscale[0] = FFMAX(
-        s->quant_matrixes[0][s->scantable.permutated[1]],
-        s->quant_matrixes[0][s->scantable.permutated[8]]) >> 1;
-
-    for (i = 0; i < 64; i++)
-    {
-        j = s->scantable.permutated[i];
-        s->quant_matrixes[1][j] = sp5x_quant_table[(qscale * 2) + 1 + i];
-    }
-    s->qscale[1] = FFMAX(
-        s->quant_matrixes[1][s->scantable.permutated[1]],
-        s->quant_matrixes[1][s->scantable.permutated[8]]) >> 1;
-
-    /* DHT */
-
-    /* SOS */
-    s->comp_index[0] = 0;
-    s->nb_blocks[0] = s->h_count[0] * s->v_count[0];
-    s->h_scount[0] = s->h_count[0];
-    s->v_scount[0] = s->v_count[0];
-    s->dc_index[0] = 0;
-    s->ac_index[0] = 0;
-
-    s->comp_index[1] = 1;
-    s->nb_blocks[1] = s->h_count[1] * s->v_count[1];
-    s->h_scount[1] = s->h_count[1];
-    s->v_scount[1] = s->v_count[1];
-    s->dc_index[1] = 1;
-    s->ac_index[1] = 1;
-
-    s->comp_index[2] = 2;
-    s->nb_blocks[2] = s->h_count[2] * s->v_count[2];
-    s->h_scount[2] = s->h_count[2];
-    s->v_scount[2] = s->v_count[2];
-    s->dc_index[2] = 1;
-    s->ac_index[2] = 1;
-
-    for (i = 0; i < 3; i++)
-        s->last_dc[i] = 1024;
-
-    s->mb_width = (s->width * s->h_max * 8 -1) / (s->h_max * 8);
-    s->mb_height = (s->height * s->v_max * 8 -1) / (s->v_max * 8);
-
-    init_get_bits(&s->gb, buf+14, (buf_size-14)*8);
-
-    return mjpeg_decode_scan(s);
-#endif
-
     return i;
 }
 
 AVCodec sp5x_decoder = {
     "sp5x",
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_SP5X,
     sizeof(MJpegDecodeContext),
     ff_mjpeg_decode_init,
     NULL,
@@ skipping 10 matching lines @@
     AVMEDIA_TYPE_VIDEO,
     CODEC_ID_AMV,
     sizeof(MJpegDecodeContext),
     ff_mjpeg_decode_init,
     NULL,
     ff_mjpeg_decode_end,
     sp5x_decode_frame,
     CODEC_CAP_DR1,
     .long_name = NULL_IF_CONFIG_SMALL("AMV Video"),
 };