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move sp5x decoder in its own file

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Originally committed as revision 9071 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Aurelien Jacobs 2007-05-19 14:40:02 +00:00
parent 5acd8d9e77
commit 40cce9ff91
3 changed files with 199 additions and 170 deletions
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2
libavcodec/Makefile
View File

@ -154,7 +154,7 @@ OBJS-$(CONFIG_SOL_DPCM_DECODER) += dpcm.o
OBJS-$(CONFIG_SONIC_DECODER) += sonic.o
OBJS-$(CONFIG_SONIC_ENCODER) += sonic.o
OBJS-$(CONFIG_SONIC_LS_DECODER) += sonic.o
OBJS-$(CONFIG_SP5X_DECODER) += mjpegdec.o mjpeg.o
OBJS-$(CONFIG_SP5X_DECODER) += sp5xdec.o mjpegdec.o mjpeg.o
OBJS-$(CONFIG_SVQ1_DECODER) += svq1.o
OBJS-$(CONFIG_SVQ1_ENCODER) += svq1.o
OBJS-$(CONFIG_SVQ3_DECODER) += h264.o

169
libavcodec/mjpegdec.c
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@ -1417,162 +1417,6 @@ read_header:
return buf_ptr - buf;
}
#include "sp5x.h"
static int sp5x_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
#if 0
MJpegDecodeContext *s = avctx->priv_data;
#endif
const int qscale = 5;
uint8_t *buf_ptr, *buf_end, *recoded;
int i = 0, j = 0;
if (!avctx->width || !avctx->height)
return -1;
buf_ptr = buf;
buf_end = buf + buf_size;
#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);
memcpy(recoded+j+70, &sp5x_quant_table[(qscale * 2) + 1], 64);
j += sizeof(sp5x_data_dqt);
memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht));
j += sizeof(sp5x_data_dht);
memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof));
recoded[j+5] = (avctx->coded_height >> 8) & 0xFF;
recoded[j+6] = avctx->coded_height & 0xFF;
recoded[j+7] = (avctx->coded_width >> 8) & 0xFF;
recoded[j+8] = avctx->coded_width & 0xFF;
j += sizeof(sp5x_data_sof);
memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos));
j += sizeof(sp5x_data_sos);
for (i = 14; i < buf_size && j < buf_size+1024-2; i++)
{
recoded[j++] = buf[i];
if (buf[i] == 0xff)
recoded[j++] = 0;
}
/* EOI */
recoded[j++] = 0xFF;
recoded[j++] = 0xD9;
i = ff_mjpeg_decode_frame(avctx, data, data_size, recoded, j);
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 = 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;
}
int ff_mjpeg_decode_end(AVCodecContext *avctx)
{
MJpegDecodeContext *s = avctx->priv_data;
@ -1626,16 +1470,3 @@ AVCodec mjpegb_decoder = {
CODEC_CAP_DR1,
NULL
};
AVCodec sp5x_decoder = {
"sp5x",
CODEC_TYPE_VIDEO,
CODEC_ID_SP5X,
sizeof(MJpegDecodeContext),
ff_mjpeg_decode_init,
NULL,
ff_mjpeg_decode_end,
sp5x_decode_frame,
CODEC_CAP_DR1,
NULL
};

198
libavcodec/sp5xdec.c Normal file
View File

@ -0,0 +1,198 @@
/*
* 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.
*
* FFmpeg is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with FFmpeg; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
/**
* @file sp5xdec.c
* Sunplus JPEG decoder (SP5X).
*/
#include "avcodec.h"
#include "mjpeg.h"
#include "mjpegdec.h"
#include "sp5x.h"
static int sp5x_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
#if 0
MJpegDecodeContext *s = avctx->priv_data;
#endif
const int qscale = 5;
uint8_t *buf_ptr, *buf_end, *recoded;
int i = 0, j = 0;
if (!avctx->width || !avctx->height)
return -1;
buf_ptr = buf;
buf_end = buf + buf_size;
#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);
memcpy(recoded+j+70, &sp5x_quant_table[(qscale * 2) + 1], 64);
j += sizeof(sp5x_data_dqt);
memcpy(recoded+j, &sp5x_data_dht[0], sizeof(sp5x_data_dht));
j += sizeof(sp5x_data_dht);
memcpy(recoded+j, &sp5x_data_sof[0], sizeof(sp5x_data_sof));
recoded[j+5] = (avctx->coded_height >> 8) & 0xFF;
recoded[j+6] = avctx->coded_height & 0xFF;
recoded[j+7] = (avctx->coded_width >> 8) & 0xFF;
recoded[j+8] = avctx->coded_width & 0xFF;
j += sizeof(sp5x_data_sof);
memcpy(recoded+j, &sp5x_data_sos[0], sizeof(sp5x_data_sos));
j += sizeof(sp5x_data_sos);
for (i = 14; i < buf_size && j < buf_size+1024-2; i++)
{
recoded[j++] = buf[i];
if (buf[i] == 0xff)
recoded[j++] = 0;
}
/* EOI */
recoded[j++] = 0xFF;
recoded[j++] = 0xD9;
i = ff_mjpeg_decode_frame(avctx, data, data_size, recoded, j);
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 = 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",
CODEC_TYPE_VIDEO,
CODEC_ID_SP5X,
sizeof(MJpegDecodeContext),
ff_mjpeg_decode_init,
NULL,
ff_mjpeg_decode_end,
sp5x_decode_frame,
CODEC_CAP_DR1,
NULL
};