*/
/**
- * @file 4xm.c
+ * @file libavcodec/4xm.c
* 4XM codec.
*/
+#include "libavutil/intreadwrite.h"
#include "avcodec.h"
#include "dsputil.h"
-#include "mpegvideo.h"
+#include "get_bits.h"
#include "bytestream.h"
//#undef NDEBUG
int mv[256];
VLC pre_vlc;
int last_dc;
- DECLARE_ALIGNED_8(DCTELEM, block[6][64]);
- uint8_t *bitstream_buffer;
+ DECLARE_ALIGNED_16(DCTELEM, block)[6][64];
+ void *bitstream_buffer;
unsigned int bitstream_buffer_size;
int version;
CFrameBuffer cfrm[CFRAME_BUFFER_COUNT];
}
}
-static void init_vlcs(FourXContext *f){
+static av_cold void init_vlcs(FourXContext *f){
+ static VLC_TYPE table[8][32][2];
int i;
for(i=0; i<8; i++){
+ block_type_vlc[0][i].table= table[i];
+ block_type_vlc[0][i].table_allocated= 32;
init_vlc(&block_type_vlc[0][i], BLOCK_TYPE_VLC_BITS, 7,
&block_type_tab[0][i][0][1], 2, 1,
- &block_type_tab[0][i][0][0], 2, 1, 1);
+ &block_type_tab[0][i][0][0], 2, 1, INIT_VLC_USE_NEW_STATIC);
}
}
}
}
-static int get32(void *p){
- return le2me_32(*(uint32_t*)p);
-}
-
static int decode_p_frame(FourXContext *f, const uint8_t *buf, int length){
int x, y;
const int width= f->avctx->width;
if(f->version>1){
extra=20;
- bitstream_size= get32(buf+8);
- wordstream_size= get32(buf+12);
- bytestream_size= get32(buf+16);
+ bitstream_size= AV_RL32(buf+8);
+ wordstream_size= AV_RL32(buf+12);
+ bytestream_size= AV_RL32(buf+16);
}else{
extra=0;
bitstream_size = AV_RL16(buf-4);
return -1;
}
- f->bitstream_buffer= av_fast_realloc(f->bitstream_buffer, &f->bitstream_buffer_size, bitstream_size + FF_INPUT_BUFFER_PADDING_SIZE);
- f->dsp.bswap_buf((uint32_t*)f->bitstream_buffer, (const uint32_t*)(buf + extra), bitstream_size/4);
+ av_fast_malloc(&f->bitstream_buffer, &f->bitstream_buffer_size, bitstream_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!f->bitstream_buffer)
+ return AVERROR(ENOMEM);
+ f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)(buf + extra), bitstream_size/4);
init_get_bits(&f->gb, f->bitstream_buffer, 8*bitstream_size);
f->wordstream= (const uint16_t*)(buf + extra + bitstream_size);
/**
* decode block and dequantize.
- * Note this is allmost identical to mjpeg
+ * Note this is almost identical to MJPEG.
*/
static int decode_i_block(FourXContext *f, DCTELEM *block){
int code, i, j, level, val;
const int height= f->avctx->height;
uint16_t *dst= (uint16_t*)f->current_picture.data[0];
const int stride= f->current_picture.linesize[0]>>1;
- const unsigned int bitstream_size= get32(buf);
- const int token_count av_unused = get32(buf + bitstream_size + 8);
- unsigned int prestream_size= 4*get32(buf + bitstream_size + 4);
+ const unsigned int bitstream_size= AV_RL32(buf);
+ const int token_count av_unused = AV_RL32(buf + bitstream_size + 8);
+ unsigned int prestream_size= 4*AV_RL32(buf + bitstream_size + 4);
const uint8_t *prestream= buf + bitstream_size + 12;
if(prestream_size + bitstream_size + 12 != length
prestream_size= length + buf - prestream;
- f->bitstream_buffer= av_fast_realloc(f->bitstream_buffer, &f->bitstream_buffer_size, prestream_size + FF_INPUT_BUFFER_PADDING_SIZE);
- f->dsp.bswap_buf((uint32_t*)f->bitstream_buffer, (const uint32_t*)prestream, prestream_size/4);
+ av_fast_malloc(&f->bitstream_buffer, &f->bitstream_buffer_size, prestream_size + FF_INPUT_BUFFER_PADDING_SIZE);
+ if (!f->bitstream_buffer)
+ return AVERROR(ENOMEM);
+ f->dsp.bswap_buf(f->bitstream_buffer, (const uint32_t*)prestream, prestream_size/4);
init_get_bits(&f->pre_gb, f->bitstream_buffer, 8*prestream_size);
f->last_dc= 0*128*8*8;
static int decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
- const uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
FourXContext * const f = avctx->priv_data;
AVFrame *picture = data;
AVFrame *p, temp;
int i, frame_4cc, frame_size;
- frame_4cc= get32(buf);
- if(buf_size != get32(buf+4)+8 || buf_size < 20){
- av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d\n", buf_size, get32(buf+4));
+ frame_4cc= AV_RL32(buf);
+ if(buf_size != AV_RL32(buf+4)+8 || buf_size < 20){
+ av_log(f->avctx, AV_LOG_ERROR, "size mismatch %d %d\n", buf_size, AV_RL32(buf+4));
}
- if(frame_4cc == ff_get_fourcc("cfrm")){
+ if(frame_4cc == AV_RL32("cfrm")){
int free_index=-1;
const int data_size= buf_size - 20;
- const int id= get32(buf+12);
- const int whole_size= get32(buf+16);
+ const int id= AV_RL32(buf+12);
+ const int whole_size= AV_RL32(buf+16);
CFrameBuffer *cfrm;
for(i=0; i<CFRAME_BUFFER_COUNT; i++){
}
cfrm->size= cfrm->id= 0;
- frame_4cc= ff_get_fourcc("pfrm");
+ frame_4cc= AV_RL32("pfrm");
}else
return buf_size;
}else{
return -1;
}
- if(frame_4cc == ff_get_fourcc("ifr2")){
- p->pict_type= I_TYPE;
+ if(frame_4cc == AV_RL32("ifr2")){
+ p->pict_type= FF_I_TYPE;
if(decode_i2_frame(f, buf-4, frame_size) < 0)
return -1;
- }else if(frame_4cc == ff_get_fourcc("ifrm")){
- p->pict_type= I_TYPE;
+ }else if(frame_4cc == AV_RL32("ifrm")){
+ p->pict_type= FF_I_TYPE;
if(decode_i_frame(f, buf, frame_size) < 0)
return -1;
- }else if(frame_4cc == ff_get_fourcc("pfrm") || frame_4cc == ff_get_fourcc("pfr2")){
- p->pict_type= P_TYPE;
+ }else if(frame_4cc == AV_RL32("pfrm") || frame_4cc == AV_RL32("pfr2")){
+ p->pict_type= FF_P_TYPE;
if(decode_p_frame(f, buf, frame_size) < 0)
return -1;
- }else if(frame_4cc == ff_get_fourcc("snd_")){
+ }else if(frame_4cc == AV_RL32("snd_")){
av_log(avctx, AV_LOG_ERROR, "ignoring snd_ chunk length:%d\n", buf_size);
}else{
av_log(avctx, AV_LOG_ERROR, "ignoring unknown chunk length:%d\n", buf_size);
}
- p->key_frame= p->pict_type == I_TYPE;
+ p->key_frame= p->pict_type == FF_I_TYPE;
*picture= *p;
*data_size = sizeof(AVPicture);
}
-static void common_init(AVCodecContext *avctx){
+static av_cold void common_init(AVCodecContext *avctx){
FourXContext * const f = avctx->priv_data;
dsputil_init(&f->dsp, avctx);
f->avctx= avctx;
}
-static int decode_init(AVCodecContext *avctx){
+static av_cold int decode_init(AVCodecContext *avctx){
FourXContext * const f = avctx->priv_data;
if(avctx->extradata_size != 4 || !avctx->extradata) {
init_vlcs(f);
if(f->version>2) avctx->pix_fmt= PIX_FMT_RGB565;
- else avctx->pix_fmt= PIX_FMT_RGB555;
+ else avctx->pix_fmt= PIX_FMT_BGR555;
return 0;
}
-static int decode_end(AVCodecContext *avctx){
+static av_cold int decode_end(AVCodecContext *avctx){
FourXContext * const f = avctx->priv_data;
int i;
f->cfrm[i].allocated_size= 0;
}
free_vlc(&f->pre_vlc);
+ if(f->current_picture.data[0])
+ avctx->release_buffer(avctx, &f->current_picture);
+ if(f->last_picture.data[0])
+ avctx->release_buffer(avctx, &f->last_picture);
return 0;
}
NULL,
decode_end,
decode_frame,
- /*CODEC_CAP_DR1,*/
+ CODEC_CAP_DR1,
+ .long_name = NULL_IF_CONFIG_SMALL("4X Movie"),
};
projects / ffmpeg / blobdiff