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FFmpeg/libavcodec/rawdec.c
ami_stuff 040e1c67ed rawdec: fix decoding of QT WRAW files
Fix decoding of QT WRAW files.

From some tests it results that:

1. all of the AVI/MOV WRAW files (at least from the link posted
   to the trac ticket #108) need to be flipped
2. mov WRAW files need to use AVI color modes
3. assigning PAL8 mode by default to WRAW codec is not correct

Fix decoding of file CarltonMovie2.mov, fix trac issue #108.
2011-05-25 00:13:09 +02:00

235 lines
7.7 KiB
C

/*
* Raw Video Decoder
* Copyright (c) 2001 Fabrice Bellard
*
* 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
* Raw Video Decoder
*/
#include "avcodec.h"
#include "imgconvert.h"
#include "raw.h"
#include "libavutil/intreadwrite.h"
#include "libavutil/imgutils.h"
#include "libavutil/opt.h"
typedef struct RawVideoContext {
AVClass *av_class;
uint32_t palette[AVPALETTE_COUNT];
unsigned char * buffer; /* block of memory for holding one frame */
int length; /* number of bytes in buffer */
int flip;
AVFrame pic; ///< AVCodecContext.coded_frame
int tff;
} RawVideoContext;
static const AVOption options[]={
{"top", "top field first", offsetof(RawVideoContext, tff), FF_OPT_TYPE_INT, {.dbl = -1}, -1, 1, AV_OPT_FLAG_DECODING_PARAM|AV_OPT_FLAG_VIDEO_PARAM},
{NULL}
};
static const AVClass class = { "rawdec", NULL, options, LIBAVUTIL_VERSION_INT };
static const PixelFormatTag pix_fmt_bps_avi[] = {
{ PIX_FMT_MONOWHITE, 1 },
{ PIX_FMT_PAL8, 2 },
{ PIX_FMT_PAL8, 4 },
{ PIX_FMT_PAL8, 8 },
{ PIX_FMT_RGB444, 12 },
{ PIX_FMT_RGB555, 15 },
{ PIX_FMT_RGB555, 16 },
{ PIX_FMT_BGR24, 24 },
{ PIX_FMT_RGB32, 32 },
{ PIX_FMT_NONE, 0 },
};
static const PixelFormatTag pix_fmt_bps_mov[] = {
{ PIX_FMT_MONOWHITE, 1 },
{ PIX_FMT_PAL8, 2 },
{ PIX_FMT_PAL8, 4 },
{ PIX_FMT_PAL8, 8 },
// FIXME swscale does not support 16 bit in .mov, sample 16bit.mov
// http://developer.apple.com/documentation/QuickTime/QTFF/QTFFChap3/qtff3.html
{ PIX_FMT_RGB555BE, 16 },
{ PIX_FMT_RGB24, 24 },
{ PIX_FMT_ARGB, 32 },
{ PIX_FMT_MONOWHITE,33 },
{ PIX_FMT_NONE, 0 },
};
enum PixelFormat ff_find_pix_fmt(const PixelFormatTag *tags, unsigned int fourcc)
{
while (tags->pix_fmt >= 0) {
if (tags->fourcc == fourcc)
return tags->pix_fmt;
tags++;
}
return PIX_FMT_YUV420P;
}
static av_cold int raw_init_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
if (avctx->codec_tag == MKTAG('r','a','w',' '))
avctx->pix_fmt = ff_find_pix_fmt(pix_fmt_bps_mov, avctx->bits_per_coded_sample);
else if (avctx->codec_tag == MKTAG('W','R','A','W'))
avctx->pix_fmt = ff_find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
else if (avctx->codec_tag)
avctx->pix_fmt = ff_find_pix_fmt(ff_raw_pix_fmt_tags, avctx->codec_tag);
else if (avctx->pix_fmt == PIX_FMT_NONE && avctx->bits_per_coded_sample)
avctx->pix_fmt = ff_find_pix_fmt(pix_fmt_bps_avi, avctx->bits_per_coded_sample);
ff_set_systematic_pal2(context->palette, avctx->pix_fmt);
context->length = avpicture_get_size(avctx->pix_fmt, avctx->width, avctx->height);
if((avctx->bits_per_coded_sample == 4 || avctx->bits_per_coded_sample == 2) &&
avctx->pix_fmt==PIX_FMT_PAL8 &&
(!avctx->codec_tag || avctx->codec_tag == MKTAG('r','a','w',' '))){
context->buffer = av_malloc(context->length);
if (!context->buffer)
return -1;
}
context->pic.pict_type = AV_PICTURE_TYPE_I;
context->pic.key_frame = 1;
avctx->coded_frame= &context->pic;
if((avctx->extradata_size >= 9 && !memcmp(avctx->extradata + avctx->extradata_size - 9, "BottomUp", 9)) ||
avctx->codec_tag == MKTAG(3, 0, 0, 0) || avctx->codec_tag == MKTAG('W','R','A','W'))
context->flip=1;
return 0;
}
static void flip(AVCodecContext *avctx, AVPicture * picture){
picture->data[0] += picture->linesize[0] * (avctx->height-1);
picture->linesize[0] *= -1;
}
static int raw_decode(AVCodecContext *avctx,
void *data, int *data_size,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
RawVideoContext *context = avctx->priv_data;
AVFrame * frame = (AVFrame *) data;
AVPicture * picture = (AVPicture *) data;
frame->pict_type = avctx->coded_frame->pict_type;
frame->interlaced_frame = avctx->coded_frame->interlaced_frame;
frame->top_field_first = avctx->coded_frame->top_field_first;
frame->reordered_opaque = avctx->reordered_opaque;
frame->pkt_pts = avctx->pkt->pts;
frame->pkt_pos = avctx->pkt->pos;
if(context->tff>=0){
frame->interlaced_frame = 1;
frame->top_field_first = context->tff;
}
//2bpp and 4bpp raw in avi and mov (yes this is ugly ...)
if (context->buffer) {
int i;
uint8_t *dst = context->buffer;
buf_size = context->length - 256*4;
if (avctx->bits_per_coded_sample == 4){
for(i=0; 2*i+1 < buf_size; i++){
dst[2*i+0]= buf[i]>>4;
dst[2*i+1]= buf[i]&15;
}
} else
for(i=0; 4*i+3 < buf_size; i++){
dst[4*i+0]= buf[i]>>6;
dst[4*i+1]= buf[i]>>4&3;
dst[4*i+2]= buf[i]>>2&3;
dst[4*i+3]= buf[i] &3;
}
buf= dst;
}
if(avctx->codec_tag == MKTAG('A', 'V', '1', 'x') ||
avctx->codec_tag == MKTAG('A', 'V', 'u', 'p'))
buf += buf_size - context->length;
if(buf_size < context->length - (avctx->pix_fmt==PIX_FMT_PAL8 ? 256*4 : 0))
return -1;
avpicture_fill(picture, buf, avctx->pix_fmt, avctx->width, avctx->height);
if((avctx->pix_fmt==PIX_FMT_PAL8 && buf_size < context->length) ||
(avctx->pix_fmt!=PIX_FMT_PAL8 &&
(av_pix_fmt_descriptors[avctx->pix_fmt].flags & PIX_FMT_PAL))){
frame->data[1]= context->palette;
}
if (avctx->pix_fmt == PIX_FMT_PAL8) {
const uint8_t *pal = av_packet_get_side_data(avpkt, AV_PKT_DATA_PALETTE, NULL);
if (pal) {
memcpy(frame->data[1], pal, AVPALETTE_SIZE);
frame->palette_has_changed = 1;
}
}
if(avctx->pix_fmt==PIX_FMT_BGR24 && ((frame->linesize[0]+3)&~3)*avctx->height <= buf_size)
frame->linesize[0] = (frame->linesize[0]+3)&~3;
if(context->flip)
flip(avctx, picture);
if ( avctx->codec_tag == MKTAG('Y', 'V', '1', '2')
|| avctx->codec_tag == MKTAG('Y', 'V', 'U', '9'))
FFSWAP(uint8_t *, picture->data[1], picture->data[2]);
if(avctx->codec_tag == AV_RL32("yuv2") &&
avctx->pix_fmt == PIX_FMT_YUYV422) {
int x, y;
uint8_t *line = picture->data[0];
for(y = 0; y < avctx->height; y++) {
for(x = 0; x < avctx->width; x++)
line[2*x + 1] ^= 0x80;
line += picture->linesize[0];
}
}
*data_size = sizeof(AVPicture);
return buf_size;
}
static av_cold int raw_close_decoder(AVCodecContext *avctx)
{
RawVideoContext *context = avctx->priv_data;
av_freep(&context->buffer);
return 0;
}
AVCodec ff_rawvideo_decoder = {
"rawvideo",
AVMEDIA_TYPE_VIDEO,
CODEC_ID_RAWVIDEO,
sizeof(RawVideoContext),
raw_init_decoder,
NULL,
raw_close_decoder,
raw_decode,
.long_name = NULL_IF_CONFIG_SMALL("raw video"),
.priv_class= &class,
};