* see http://www.pcisys.net/~melanson/codecs/huffyuv.txt for a description of
* the algorithm used
*/
+
+/**
+ * @file huffyuv.c
+ * huffyuv codec for libavcodec.
+ */
#include "common.h"
#include "avcodec.h"
DSPContext dsp;
}HYuvContext;
+static const unsigned char classic_shift_luma[] = {
+ 34,36,35,69,135,232,9,16,10,24,11,23,12,16,13,10,14,8,15,8,
+ 16,8,17,20,16,10,207,206,205,236,11,8,10,21,9,23,8,8,199,70,
+ 69,68, 0
+};
+
+static const unsigned char classic_shift_chroma[] = {
+ 66,36,37,38,39,40,41,75,76,77,110,239,144,81,82,83,84,85,118,183,
+ 56,57,88,89,56,89,154,57,58,57,26,141,57,56,58,57,58,57,184,119,
+ 214,245,116,83,82,49,80,79,78,77,44,75,41,40,39,38,37,36,34, 0
+};
+
+static const unsigned char classic_add_luma[256] = {
+ 3, 9, 5, 12, 10, 35, 32, 29, 27, 50, 48, 45, 44, 41, 39, 37,
+ 73, 70, 68, 65, 64, 61, 58, 56, 53, 50, 49, 46, 44, 41, 38, 36,
+ 68, 65, 63, 61, 58, 55, 53, 51, 48, 46, 45, 43, 41, 39, 38, 36,
+ 35, 33, 32, 30, 29, 27, 26, 25, 48, 47, 46, 44, 43, 41, 40, 39,
+ 37, 36, 35, 34, 32, 31, 30, 28, 27, 26, 24, 23, 22, 20, 19, 37,
+ 35, 34, 33, 31, 30, 29, 27, 26, 24, 23, 21, 20, 18, 17, 15, 29,
+ 27, 26, 24, 22, 21, 19, 17, 16, 14, 26, 25, 23, 21, 19, 18, 16,
+ 15, 27, 25, 23, 21, 19, 17, 16, 14, 26, 25, 23, 21, 18, 17, 14,
+ 12, 17, 19, 13, 4, 9, 2, 11, 1, 7, 8, 0, 16, 3, 14, 6,
+ 12, 10, 5, 15, 18, 11, 10, 13, 15, 16, 19, 20, 22, 24, 27, 15,
+ 18, 20, 22, 24, 26, 14, 17, 20, 22, 24, 27, 15, 18, 20, 23, 25,
+ 28, 16, 19, 22, 25, 28, 32, 36, 21, 25, 29, 33, 38, 42, 45, 49,
+ 28, 31, 34, 37, 40, 42, 44, 47, 49, 50, 52, 54, 56, 57, 59, 60,
+ 62, 64, 66, 67, 69, 35, 37, 39, 40, 42, 43, 45, 47, 48, 51, 52,
+ 54, 55, 57, 59, 60, 62, 63, 66, 67, 69, 71, 72, 38, 40, 42, 43,
+ 46, 47, 49, 51, 26, 28, 30, 31, 33, 34, 18, 19, 11, 13, 7, 8,
+};
+
+static const unsigned char classic_add_chroma[256] = {
+ 3, 1, 2, 2, 2, 2, 3, 3, 7, 5, 7, 5, 8, 6, 11, 9,
+ 7, 13, 11, 10, 9, 8, 7, 5, 9, 7, 6, 4, 7, 5, 8, 7,
+ 11, 8, 13, 11, 19, 15, 22, 23, 20, 33, 32, 28, 27, 29, 51, 77,
+ 43, 45, 76, 81, 46, 82, 75, 55, 56,144, 58, 80, 60, 74,147, 63,
+ 143, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79,
+ 80, 81, 82, 83, 84, 85, 86, 87, 88, 89, 90, 91, 27, 30, 21, 22,
+ 17, 14, 5, 6,100, 54, 47, 50, 51, 53,106,107,108,109,110,111,
+ 112,113,114,115, 4,117,118, 92, 94,121,122, 3,124,103, 2, 1,
+ 0,129,130,131,120,119,126,125,136,137,138,139,140,141,142,134,
+ 135,132,133,104, 64,101, 62, 57,102, 95, 93, 59, 61, 28, 97, 96,
+ 52, 49, 48, 29, 32, 25, 24, 46, 23, 98, 45, 44, 43, 20, 42, 41,
+ 19, 18, 99, 40, 15, 39, 38, 16, 13, 12, 11, 37, 10, 9, 8, 36,
+ 7,128,127,105,123,116, 35, 34, 33,145, 31, 79, 42,146, 78, 26,
+ 83, 48, 49, 50, 44, 47, 26, 31, 30, 18, 17, 19, 21, 24, 25, 13,
+ 14, 16, 17, 18, 20, 21, 12, 14, 15, 9, 10, 6, 9, 6, 5, 8,
+ 6, 12, 8, 10, 7, 9, 6, 4, 6, 2, 2, 3, 3, 3, 3, 2,
+};
+
static inline void bswap_buf(uint32_t *dst, uint32_t *src, int w){
int i;
*left= l;
*left_top= lt;
}
+
+#ifdef CONFIG_ENCODERS
//FIXME optimize
static inline void sub_median_prediction(uint8_t *dst, uint8_t *src1, uint8_t *src2, int w, int *left, int *left_top){
int i;
*left_top= lt;
}
+#endif //CONFIG_ENCODERS
static inline void add_left_prediction_bgr32(uint8_t *dst, uint8_t *src, int w, int *red, int *green, int *blue){
int i;
*blue= b;
}
+#ifdef CONFIG_ENCODERS
static inline int sub_left_prediction(HYuvContext *s, uint8_t *dst, uint8_t *src, int w, int left){
int i;
if(w<32){
return src[w-1];
}
}
-
+#endif //CONFIG_ENCODERS
static void read_len_table(uint8_t *dst, GetBitContext *gb){
int i, val, repeat;
return 0;
}
+#ifdef CONFIG_ENCODERS
+
static void generate_len_table(uint8_t *dst, uint64_t *stats, int size){
uint64_t counts[2*size];
int up[2*size];
}
}
+#endif //CONFIG_ENCODERS
+
static int read_huffman_tables(HYuvContext *s, uint8_t *src, int length){
GetBitContext gb;
int i;
- init_get_bits(&gb, src, length);
+ init_get_bits(&gb, src, length*8);
for(i=0; i<3; i++){
read_len_table(s->len[i], &gb);
}
static int read_old_huffman_tables(HYuvContext *s){
-#if 0
+#if 1
GetBitContext gb;
int i;
- init_get_bits(&gb, classic_shift_luma, sizeof(classic_shift_luma));
+ init_get_bits(&gb, classic_shift_luma, sizeof(classic_shift_luma)*8);
read_len_table(s->len[0], &gb);
- init_get_bits(&gb, classic_shift_chroma, sizeof(classic_shift_chroma));
+ init_get_bits(&gb, classic_shift_chroma, sizeof(classic_shift_chroma)*8);
read_len_table(s->len[1], &gb);
for(i=0; i<256; i++) s->bits[0][i] = classic_add_luma [i];
s->avctx= avctx;
s->flags= avctx->flags;
- dsputil_init(&s->dsp, avctx->dsp_mask);
+ dsputil_init(&s->dsp, avctx);
width= s->width= avctx->width;
height= s->height= avctx->height;
return 0;
}
+#ifdef CONFIG_ENCODERS
+
static void store_table(HYuvContext *s, uint8_t *len){
int i;
int index= s->avctx->extradata_size;
s->avctx= avctx;
s->flags= avctx->flags;
- dsputil_init(&s->dsp, avctx->dsp_mask);
+ dsputil_init(&s->dsp, avctx);
width= s->width= avctx->width;
height= s->height= avctx->height;
s->stats[i][j]= 0;
s->interlaced= height > 288;
-
+
// printf("pred:%d bpp:%d hbpp:%d il:%d\n", s->predictor, s->bitstream_bpp, avctx->bits_per_sample, s->interlaced);
-
+
s->picture_number=0;
-
+
return 0;
}
+#endif //CONFIG_ENCODERS
+
static void decode_422_bitstream(HYuvContext *s, int count){
int i;
-
+
count/=2;
for(i=0; i<count; i++){
}
}
+#ifdef CONFIG_ENCODERS
+
static void encode_422_bitstream(HYuvContext *s, int count){
int i;
}
}
+#endif //CONFIG_ENCODERS
+
static void decode_bgr_bitstream(HYuvContext *s, int count){
int i;
-
+
if(s->decorrelate){
if(s->bitstream_bpp==24){
for(i=0; i<count; i++){
static void draw_slice(HYuvContext *s, int y){
int h, cy;
- UINT8 *src_ptr[3];
+ uint8_t *src_ptr[3];
if(s->avctx->draw_horiz_band==NULL)
return;
bswap_buf((uint32_t*)s->bitstream_buffer, (uint32_t*)buf, buf_size/4);
- init_get_bits(&s->gb, s->bitstream_buffer, buf_size);
+ init_get_bits(&s->gb, s->bitstream_buffer, buf_size*8);
+
+ if(p->data[0])
+ avctx->release_buffer(avctx, p);
p->reference= 0;
if(avctx->get_buffer(avctx, p) < 0){
emms_c();
*picture= *p;
-
- avctx->release_buffer(avctx, p);
-
*data_size = sizeof(AVFrame);
- return (get_bits_count(&s->gb)+7)>>3;
+ return (get_bits_count(&s->gb)+31)/32*4;
}
static int decode_end(AVCodecContext *avctx)
for(i=0; i<3; i++){
free_vlc(&s->vlc[i]);
}
-
- if(avctx->get_buffer == avcodec_default_get_buffer){
- for(i=0; i<4; i++){
- av_freep(&s->picture.base[i]);
- s->picture.data[i]= NULL;
- }
- av_freep(&s->picture.opaque);
- }
+
+ avcodec_default_free_buffers(avctx);
return 0;
}
+#ifdef CONFIG_ENCODERS
+
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
HYuvContext *s = avctx->priv_data;
AVFrame *pict = data;
return 0;
}
+#endif //CONFIG_ENCODERS
+
+static const AVOption huffyuv_options[] =
+{
+ AVOPTION_CODEC_INT("prediction_method", "prediction_method", prediction_method, 0, 2, 0),
+ AVOPTION_END()
+};
+
AVCodec huffyuv_decoder = {
"huffyuv",
CODEC_TYPE_VIDEO,
NULL
};
+#ifdef CONFIG_ENCODERS
+
AVCodec huffyuv_encoder = {
"huffyuv",
CODEC_TYPE_VIDEO,
encode_init,
encode_frame,
encode_end,
+ .options = huffyuv_options,
};
+
+#endif //CONFIG_ENCODERS
\ No newline at end of file
projects / ffmpeg / blobdiff