*/
/**
- * @file ffv1.c
+ * @file libavcodec/ffv1.c
* FF Video Codec 1 (an experimental lossless codec)
*/
#include "dsputil.h"
#include "rangecoder.h"
#include "golomb.h"
+#include "mathops.h"
#define MAX_PLANES 4
#define CONTEXT_SIZE 32
+extern const uint8_t ff_log2_run[32];
+
static const int8_t quant3[256]={
0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
-4,-4,-4,-4,-4,-4,-4,-4,-4,-3,-3,-3,-3,-2,-2,-1,
};
-static const uint8_t log2_run[32]={
- 0, 0, 0, 0, 1, 1, 1, 1, 2, 2, 2, 2, 3, 3, 3, 3,
- 4, 4, 5, 5, 6, 6, 7, 7,
- 8, 9,10,11,12,13,14,15,
-};
-
typedef struct VlcState{
int16_t drift;
uint16_t error_sum;
return ret;
}
-#ifdef CONFIG_ENCODERS
+#if CONFIG_FFV1_ENCODER
static inline int encode_line(FFV1Context *s, int w, int_fast16_t *sample[2], int plane_index, int bits){
PlaneContext * const p= &s->plane[plane_index];
RangeCoder * const c= &s->c;
if(run_mode){
if(diff){
- while(run_count >= 1<<log2_run[run_index]){
- run_count -= 1<<log2_run[run_index];
+ while(run_count >= 1<<ff_log2_run[run_index]){
+ run_count -= 1<<ff_log2_run[run_index];
run_index++;
put_bits(&s->pb, 1, 1);
}
- put_bits(&s->pb, 1 + log2_run[run_index], run_count);
+ put_bits(&s->pb, 1 + ff_log2_run[run_index], run_count);
if(run_index) run_index--;
run_count=0;
run_mode=0;
}
}
if(run_mode){
- while(run_count >= 1<<log2_run[run_index]){
- run_count -= 1<<log2_run[run_index];
+ while(run_count >= 1<<ff_log2_run[run_index]){
+ run_count -= 1<<ff_log2_run[run_index];
run_index++;
put_bits(&s->pb, 1, 1);
}
for(i=0; i<5; i++)
write_quant_table(c, f->quant_table[i]);
}
-#endif /* CONFIG_ENCODERS */
+#endif /* CONFIG_FFV1_ENCODER */
static av_cold int common_init(AVCodecContext *avctx){
FFV1Context *s = avctx->priv_data;
return 0;
}
-#ifdef CONFIG_ENCODERS
+#if CONFIG_FFV1_ENCODER
static av_cold int encode_init(AVCodecContext *avctx)
{
FFV1Context *s = avctx->priv_data;
return 0;
}
-#endif /* CONFIG_ENCODERS */
+#endif /* CONFIG_FFV1_ENCODER */
static void clear_state(FFV1Context *f){
}
}
-#ifdef CONFIG_ENCODERS
+#if CONFIG_FFV1_ENCODER
static int encode_frame(AVCodecContext *avctx, unsigned char *buf, int buf_size, void *data){
FFV1Context *f = avctx->priv_data;
RangeCoder * const c= &f->c;
return used_count + (put_bits_count(&f->pb)+7)/8;
}
}
-#endif /* CONFIG_ENCODERS */
+#endif /* CONFIG_FFV1_ENCODER */
static av_cold int common_end(AVCodecContext *avctx){
FFV1Context *s = avctx->priv_data;
if(run_mode){
if(run_count==0 && run_mode==1){
if(get_bits1(&s->gb)){
- run_count = 1<<log2_run[run_index];
+ run_count = 1<<ff_log2_run[run_index];
if(x + run_count <= w) run_index++;
}else{
- if(log2_run[run_index]) run_count = get_bits(&s->gb, log2_run[run_index]);
+ if(ff_log2_run[run_index]) run_count = get_bits(&s->gb, ff_log2_run[run_index]);
else run_count=0;
if(run_index) run_index--;
run_mode=2;
static void decode_plane(FFV1Context *s, uint8_t *src, int w, int h, int stride, int plane_index){
int x, y;
int_fast16_t sample_buffer[2][w+6];
- int_fast16_t *sample[2]= {sample_buffer[0]+3, sample_buffer[1]+3};
+ int_fast16_t *sample[2];
+ sample[0]=sample_buffer[0]+3;
+ sample[1]=sample_buffer[1]+3;
s->run_index=0;
static void decode_rgb_frame(FFV1Context *s, uint32_t *src, int w, int h, int stride){
int x, y, p;
int_fast16_t sample_buffer[3][2][w+6];
- int_fast16_t *sample[3][2]= {
- {sample_buffer[0][0]+3, sample_buffer[0][1]+3},
- {sample_buffer[1][0]+3, sample_buffer[1][1]+3},
- {sample_buffer[2][0]+3, sample_buffer[2][1]+3}};
+ int_fast16_t *sample[3][2];
+ for(x=0; x<3; x++){
+ sample[x][0] = sample_buffer[x][0]+3;
+ sample[x][1] = sample_buffer[x][1]+3;
+ }
s->run_index=0;
decode_frame,
CODEC_CAP_DR1 /*| CODEC_CAP_DRAW_HORIZ_BAND*/,
NULL,
- .long_name= "FFmpeg codec #1",
+ .long_name= NULL_IF_CONFIG_SMALL("FFmpeg codec #1"),
};
-#ifdef CONFIG_ENCODERS
+#if CONFIG_FFV1_ENCODER
AVCodec ffv1_encoder = {
"ffv1",
CODEC_TYPE_VIDEO,
encode_frame,
common_end,
.pix_fmts= (enum PixelFormat[]){PIX_FMT_YUV420P, PIX_FMT_YUV444P, PIX_FMT_YUV422P, PIX_FMT_YUV411P, PIX_FMT_YUV410P, PIX_FMT_RGB32, PIX_FMT_NONE},
- .long_name= "FFmpeg codec #1",
+ .long_name= NULL_IF_CONFIG_SMALL("FFmpeg codec #1"),
};
#endif