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loco: cosmetics, reformat

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This commit is contained in:
Anton Khirnov 2012-11-19 18:48:15 +01:00
parent 1a31dff937
commit b627c3010b
1 changed files with 47 additions and 31 deletions
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78
libavcodec/loco.c
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@ -30,29 +30,39 @@
#include "internal.h"
#include "mathops.h"
enum LOCO_MODE {LOCO_UNKN=0, LOCO_CYUY2=-1, LOCO_CRGB=-2, LOCO_CRGBA=-3, LOCO_CYV12=-4,
LOCO_YUY2=1, LOCO_UYVY=2, LOCO_RGB=3, LOCO_RGBA=4, LOCO_YV12=5};
enum LOCO_MODE {
LOCO_UNKN = 0,
LOCO_CYUY2 = -1,
LOCO_CRGB = -2,
LOCO_CRGBA = -3,
LOCO_CYV12 = -4,
LOCO_YUY2 = 1,
LOCO_UYVY = 2,
LOCO_RGB = 3,
LOCO_RGBA = 4,
LOCO_YV12 = 5,
};
typedef struct LOCOContext{
typedef struct LOCOContext {
AVCodecContext *avctx;
AVFrame pic;
int lossy;
int mode;
} LOCOContext;
typedef struct RICEContext{
typedef struct RICEContext {
GetBitContext gb;
int save, run, run2; /* internal rice decoder state */
int sum, count; /* sum and count for getting rice parameter */
int lossy;
}RICEContext;
} RICEContext;
static int loco_get_rice_param(RICEContext *r)
{
int cnt = 0;
int val = r->count;
while(r->sum > val && cnt < 9) {
while (r->sum > val && cnt < 9) {
val <<= 1;
cnt++;
}
@ -65,8 +75,8 @@ static inline void loco_update_rice_param(RICEContext *r, int val)
r->sum += val;
r->count++;
if(r->count == 16) {
r->sum >>= 1;
if (r->count == 16) {
r->sum >>= 1;
r->count >>= 1;
}
}
@ -80,19 +90,18 @@ static inline int loco_get_rice(RICEContext *r)
return 0;
}
v = get_ur_golomb_jpegls(&r->gb, loco_get_rice_param(r), INT_MAX, 0);
loco_update_rice_param(r, (v+1)>>1);
loco_update_rice_param(r, (v + 1) >> 1);
if (!v) {
if (r->save >= 0) {
r->run = get_ur_golomb_jpegls(&r->gb, 2, INT_MAX, 0);
if(r->run > 1)
if (r->run > 1)
r->save += r->run + 1;
else
r->save -= 3;
}
else
} else
r->run2++;
} else {
v = ((v>>1) + r->lossy) ^ -(v&1);
v = ((v >> 1) + r->lossy) ^ -(v & 1);
if (r->run2 > 0) {
if (r->run2 > 2)
r->save += r->run2;
@ -125,16 +134,16 @@ static int loco_decode_plane(LOCOContext *l, uint8_t *data, int width, int heigh
int i, j;
init_get_bits(&rc.gb, buf, buf_size*8);
rc.save = 0;
rc.run = 0;
rc.run2 = 0;
rc.save = 0;
rc.run = 0;
rc.run2 = 0;
rc.lossy = l->lossy;
rc.sum = 8;
rc.sum = 8;
rc.count = 1;
/* restore top left pixel */
val = loco_get_rice(&rc);
val = loco_get_rice(&rc);
data[0] = 128 + val;
/* restore top line */
for (i = 1; i < width; i++) {
@ -161,13 +170,13 @@ static int decode_frame(AVCodecContext *avctx,
void *data, int *got_frame,
AVPacket *avpkt)
{
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
LOCOContext * const l = avctx->priv_data;
AVFrame * const p = &l->pic;
const uint8_t *buf = avpkt->data;
int buf_size = avpkt->size;
AVFrame * const p = &l->pic;
int decoded, ret;
if(p->data[0])
if (p->data[0])
avctx->release_buffer(avctx, p);
p->reference = 0;
@ -229,7 +238,8 @@ static int decode_frame(AVCodecContext *avctx,
return buf_size;
}
static av_cold int decode_init(AVCodecContext *avctx){
static av_cold int decode_init(AVCodecContext *avctx)
{
LOCOContext * const l = avctx->priv_data;
int version;
@ -240,7 +250,7 @@ static av_cold int decode_init(AVCodecContext *avctx){
return AVERROR_INVALIDDATA;
}
version = AV_RL32(avctx->extradata);
switch(version) {
switch (version) {
case 1:
l->lossy = 0;
break;
@ -253,30 +263,36 @@ static av_cold int decode_init(AVCodecContext *avctx){
}
l->mode = AV_RL32(avctx->extradata + 4);
switch(l->mode) {
case LOCO_CYUY2: case LOCO_YUY2: case LOCO_UYVY:
switch (l->mode) {
case LOCO_CYUY2:
case LOCO_YUY2:
case LOCO_UYVY:
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
break;
case LOCO_CRGB: case LOCO_RGB:
case LOCO_CRGB:
case LOCO_RGB:
avctx->pix_fmt = AV_PIX_FMT_BGR24;
break;
case LOCO_CYV12: case LOCO_YV12:
case LOCO_CYV12:
case LOCO_YV12:
avctx->pix_fmt = AV_PIX_FMT_YUV420P;
break;
case LOCO_CRGBA: case LOCO_RGBA:
case LOCO_CRGBA:
case LOCO_RGBA:
avctx->pix_fmt = AV_PIX_FMT_RGB32;
break;
default:
av_log(avctx, AV_LOG_INFO, "Unknown colorspace, index = %i\n", l->mode);
return AVERROR_INVALIDDATA;
}
if(avctx->debug & FF_DEBUG_PICT_INFO)
if (avctx->debug & FF_DEBUG_PICT_INFO)
av_log(avctx, AV_LOG_INFO, "lossy:%i, version:%i, mode: %i\n", l->lossy, version, l->mode);
return 0;
}
static av_cold int decode_end(AVCodecContext *avctx){
static av_cold int decode_end(AVCodecContext *avctx)
{
LOCOContext * const l = avctx->priv_data;
AVFrame *pic = &l->pic;