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-rw-r--r--libavcodec/dv.c156
1 files changed, 78 insertions, 78 deletions
diff --git a/libavcodec/dv.c b/libavcodec/dv.c
index 09fb77299d..7adaac648e 100644
--- a/libavcodec/dv.c
+++ b/libavcodec/dv.c
@@ -3,7 +3,7 @@
* Copyright (c) 2002 Fabrice Bellard.
* Copyright (c) 2004 Roman Shaposhnik.
*
- * DV encoder
+ * DV encoder
* Copyright (c) 2003 Roman Shaposhnik.
*
* Many thanks to Dan Dennedy <dan@dennedy.org> for providing wealth
@@ -42,10 +42,10 @@ typedef struct DVVideoContext {
AVFrame picture;
AVCodecContext *avctx;
uint8_t *buf;
-
+
uint8_t dv_zigzag[2][64];
uint8_t dv_idct_shift[2][2][22][64];
-
+
void (*get_pixels)(DCTELEM *block, const uint8_t *pixels, int line_size);
void (*fdct[2])(DCTELEM *block);
void (*idct_put[2])(uint8_t *dest, int line_size, DCTELEM *block);
@@ -57,7 +57,7 @@ typedef struct DVVideoContext {
#define DV_VLC_MAP_RUN_SIZE 15
#define DV_VLC_MAP_LEV_SIZE 23
#else
-#define DV_VLC_MAP_RUN_SIZE 64
+#define DV_VLC_MAP_RUN_SIZE 64
#define DV_VLC_MAP_LEV_SIZE 512 //FIXME sign was removed so this should be /2 but needs check
#endif
@@ -86,11 +86,11 @@ static void dv_build_unquantize_tables(DVVideoContext *s, uint8_t* perm)
dv_quant_shifts[q][dv_88_areas[i]] + 1;
s->dv_idct_shift[1][0][q][j] = s->dv_idct_shift[0][0][q][j] + 1;
}
-
+
/* 248DCT */
for(i = 1; i < 64; i++) {
/* 248 table */
- s->dv_idct_shift[0][1][q][i] =
+ s->dv_idct_shift[0][1][q][i] =
dv_quant_shifts[q][dv_248_areas[i]] + 1;
s->dv_idct_shift[1][1][q][i] = s->dv_idct_shift[0][1][q][i] + 1;
}
@@ -131,7 +131,7 @@ static int dvvideo_init(AVCodecContext *avctx)
new_dv_vlc_len[j] = dv_vlc_len[i];
new_dv_vlc_run[j] = dv_vlc_run[i];
new_dv_vlc_level[j] = dv_vlc_level[i];
-
+
if (dv_vlc_level[i]) {
new_dv_vlc_bits[j] <<= 1;
new_dv_vlc_len[j]++;
@@ -143,10 +143,10 @@ static int dvvideo_init(AVCodecContext *avctx)
new_dv_vlc_level[j] = -dv_vlc_level[i];
}
}
-
+
/* NOTE: as a trick, we use the fact the no codes are unused
to accelerate the parsing of partial codes */
- init_vlc(&dv_vlc, TEX_VLC_BITS, j,
+ init_vlc(&dv_vlc, TEX_VLC_BITS, j,
new_dv_vlc_len, 1, 1, new_dv_vlc_bits, 2, 2, 0);
dv_rl_vlc = av_malloc(dv_vlc.table_size * sizeof(RL_VLC_ELEM));
@@ -158,7 +158,7 @@ static int dvvideo_init(AVCodecContext *avctx)
int code= dv_vlc.table[i][0];
int len = dv_vlc.table[i][1];
int level, run;
-
+
if(len<0){ //more bits needed
run= 0;
level= code;
@@ -179,13 +179,13 @@ static int dvvideo_init(AVCodecContext *avctx)
if (dv_vlc_level[i] >= DV_VLC_MAP_LEV_SIZE)
continue;
#endif
-
+
if (dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size != 0)
continue;
-
- dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc = dv_vlc_bits[i] <<
+
+ dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].vlc = dv_vlc_bits[i] <<
(!!dv_vlc_level[i]);
- dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size = dv_vlc_len[i] +
+ dv_vlc_map[dv_vlc_run[i]][dv_vlc_level[i]].size = dv_vlc_len[i] +
(!!dv_vlc_level[i]);
}
for (i = 0; i < DV_VLC_MAP_RUN_SIZE; i++) {
@@ -194,7 +194,7 @@ static int dvvideo_init(AVCodecContext *avctx)
if (dv_vlc_map[i][j].size == 0) {
dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
(dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
- dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
+ dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
dv_vlc_map[0][j].size;
}
}
@@ -203,12 +203,12 @@ static int dvvideo_init(AVCodecContext *avctx)
if (dv_vlc_map[i][j].size == 0) {
dv_vlc_map[i][j].vlc = dv_vlc_map[0][j].vlc |
(dv_vlc_map[i-1][0].vlc << (dv_vlc_map[0][j].size));
- dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
+ dv_vlc_map[i][j].size = dv_vlc_map[i-1][0].size +
dv_vlc_map[0][j].size;
}
- dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
+ dv_vlc_map[i][((uint16_t)(-j))&0x1ff].vlc =
dv_vlc_map[i][j].vlc | 1;
- dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
+ dv_vlc_map[i][((uint16_t)(-j))&0x1ff].size =
dv_vlc_map[i][j].size;
}
#endif
@@ -241,10 +241,10 @@ static int dvvideo_init(AVCodecContext *avctx)
/* FIXME: I really don't think this should be here */
if (dv_codec_profile(avctx))
- avctx->pix_fmt = dv_codec_profile(avctx)->pix_fmt;
+ avctx->pix_fmt = dv_codec_profile(avctx)->pix_fmt;
avctx->coded_frame = &s->picture;
s->avctx= avctx;
-
+
return 0;
}
@@ -268,7 +268,7 @@ static const uint16_t block_sizes[6] = {
/* bit budget for AC only in 5 MBs */
static const int vs_total_ac_bits = (100 * 4 + 68*2) * 5;
/* see dv_88_areas and dv_248_areas for details */
-static const int mb_area_start[5] = { 1, 6, 21, 43, 64 };
+static const int mb_area_start[5] = { 1, 6, 21, 43, 64 };
#ifndef ALT_BITSTREAM_READER
#warning only works with ALT_BITSTREAM_READER
@@ -299,10 +299,10 @@ static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, DCTELEM *block)
int pos = mb->pos;
int partial_bit_count = mb->partial_bit_count;
int level, pos1, run, vlc_len, index;
-
+
OPEN_READER(re, gb);
UPDATE_CACHE(re, gb);
-
+
/* if we must parse a partial vlc, we do it here */
if (partial_bit_count > 0) {
re_cache = ((unsigned)re_cache >> partial_bit_count) |
@@ -325,7 +325,7 @@ static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, DCTELEM *block)
}
level = dv_rl_vlc[index].level;
run = dv_rl_vlc[index].run;
-
+
/* gotta check if we're still within gb boundaries */
if (re_index + vlc_len > last_index) {
/* should be < 16 bits otherwise a codeword could have been parsed */
@@ -339,10 +339,10 @@ static void dv_decode_ac(GetBitContext *gb, BlockInfo *mb, DCTELEM *block)
#ifdef VLC_DEBUG
printf("run=%d level=%d\n", run, level);
#endif
- pos += run;
+ pos += run;
if (pos >= 64)
break;
-
+
assert(level);
pos1 = scan_table[pos];
block[pos1] = level << shift_table[pos1];
@@ -366,8 +366,8 @@ static inline void bit_copy(PutBitContext *pb, GetBitContext *gb)
}
/* mb_x and mb_y are in units of 8 pixels */
-static inline void dv_decode_video_segment(DVVideoContext *s,
- uint8_t *buf_ptr1,
+static inline void dv_decode_video_segment(DVVideoContext *s,
+ uint8_t *buf_ptr1,
const uint16_t *mb_pos_ptr)
{
int quant, dc, dct_mode, class1, j;
@@ -384,10 +384,10 @@ static inline void dv_decode_video_segment(DVVideoContext *s,
uint8_t mb_bit_buffer[80 + 4] __align8; /* allow some slack */
uint8_t vs_bit_buffer[5 * 80 + 4] __align8; /* allow some slack */
const int log2_blocksize= 3-s->avctx->lowres;
-
+
assert((((int)mb_bit_buffer)&7)==0);
assert((((int)vs_bit_buffer)&7)==0);
-
+
memset(sblock, 0, sizeof(sblock));
/* pass 1 : read DC and AC coefficients in blocks */
@@ -405,7 +405,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s,
for(j = 0;j < 6; j++) {
last_index = block_sizes[j];
init_get_bits(&gb, buf_ptr, last_index);
-
+
/* get the dc */
dc = get_sbits(&gb, 9);
dct_mode = get_bits1(&gb);
@@ -432,11 +432,11 @@ static inline void dv_decode_video_segment(DVVideoContext *s,
block is finished */
if (mb->pos >= 64)
bit_copy(&pb, &gb);
-
+
block += 64;
mb++;
}
-
+
/* pass 2 : we can do it just after */
#ifdef VLC_DEBUG
printf("***pass 2 size=%d MB#=%d\n", put_bits_count(&pb), mb_index);
@@ -481,7 +481,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s,
mb++;
}
}
-
+
/* compute idct and place blocks */
block = &sblock[0][0];
mb = mb_data;
@@ -526,7 +526,7 @@ static inline void dv_decode_video_segment(DVVideoContext *s,
}
} else {
/* don't ask me why they inverted Cb and Cr ! */
- idct_put(s->picture.data[6 - j] + c_offset,
+ idct_put(s->picture.data[6 - j] + c_offset,
s->picture.linesize[6 - j], block);
}
}
@@ -545,7 +545,7 @@ static always_inline int dv_rl2vlc(int run, int level, int sign, uint32_t* vlc)
*vlc = dv_vlc_map[run][level].vlc | sign;
size = dv_vlc_map[run][level].size;
}
- else {
+ else {
if (level < DV_VLC_MAP_LEV_SIZE) {
*vlc = dv_vlc_map[0][level].vlc | sign;
size = dv_vlc_map[0][level].size;
@@ -554,23 +554,23 @@ static always_inline int dv_rl2vlc(int run, int level, int sign, uint32_t* vlc)
size = 16;
}
if (run) {
- *vlc |= ((run < 16) ? dv_vlc_map[run-1][0].vlc :
+ *vlc |= ((run < 16) ? dv_vlc_map[run-1][0].vlc :
(0x1f80 | (run - 1))) << size;
size += (run < 16) ? dv_vlc_map[run-1][0].size : 13;
}
}
-
+
return size;
}
static always_inline int dv_rl2vlc_size(int run, int level)
{
int size;
-
+
if (run < DV_VLC_MAP_RUN_SIZE && level < DV_VLC_MAP_LEV_SIZE) {
- size = dv_vlc_map[run][level].size;
+ size = dv_vlc_map[run][level].size;
}
- else {
+ else {
size = (level < DV_VLC_MAP_LEV_SIZE) ? dv_vlc_map[0][level].size : 16;
if (run) {
size += (run < 16) ? dv_vlc_map[run-1][0].size : 13;
@@ -605,7 +605,7 @@ typedef struct EncBlockInfo {
uint32_t partial_bit_buffer; /* we can't use uint16_t here */
} EncBlockInfo;
-static always_inline PutBitContext* dv_encode_ac(EncBlockInfo* bi, PutBitContext* pb_pool,
+static always_inline PutBitContext* dv_encode_ac(EncBlockInfo* bi, PutBitContext* pb_pool,
PutBitContext* pb_end)
{
int prev;
@@ -629,13 +629,13 @@ static always_inline PutBitContext* dv_encode_ac(EncBlockInfo* bi, PutBitContext
return pb;
}
}
-
+
/* Store VLC */
put_bits(pb, size, vlc);
-
+
if(bi->cur_ac>=64)
break;
-
+
/* Construct the next VLC */
prev= bi->cur_ac;
bi->cur_ac = bi->next[prev];
@@ -648,7 +648,7 @@ static always_inline PutBitContext* dv_encode_ac(EncBlockInfo* bi, PutBitContext
return pb;
}
-static always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi,
+static always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi,
const uint8_t* zigzag_scan, int bias)
{
int i, area;
@@ -656,14 +656,14 @@ static always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi,
int max=12;
int prev=0;
- bi->mb[0] = blk[0];
-
+ bi->mb[0] = blk[0];
+
for (area = 0; area < 4; area++) {
bi->prev[area] = prev;
bi->bit_size[area] = 1; // 4 areas 4 bits for EOB :)
for (i=mb_area_start[area]; i<mb_area_start[area+1]; i++) {
int level = blk[zigzag_scan[i]];
-
+
if (level+15 > 30U) {
bi->sign[i] = (level>>31)&1;
bi->mb[i] = level= ABS(level)>>4;
@@ -678,7 +678,7 @@ static always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi,
for(bi->cno = 0; max > classes[bi->cno]; bi->cno++);
bi->cno += bias;
-
+
if (bi->cno >= 3) {
bi->cno = 3;
prev=0;
@@ -688,7 +688,7 @@ static always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi,
bi->bit_size[area] = 1; // 4 areas 4 bits for EOB :)
for (; i<mb_area_start[area+1]; i= bi->next[i]) {
bi->mb[i] >>=1;
-
+
if (bi->mb[i]) {
bi->bit_size[area] += dv_rl2vlc_size(i - prev - 1, bi->mb[i]);
bi->next[prev]= i;
@@ -707,11 +707,11 @@ static always_inline int dv_guess_dct_mode(DCTELEM *blk) {
int score88 = 0;
int score248 = 0;
int i;
-
+
/* Compute 8-8 score (small values give a better chance for 8-8 DCT) */
s = blk;
for(i=0; i<7; i++) {
- score88 += SC(0, 8) + SC(1, 9) + SC(2, 10) + SC(3, 11) +
+ score88 += SC(0, 8) + SC(1, 9) + SC(2, 10) + SC(3, 11) +
SC(4, 12) + SC(5,13) + SC(6, 14) + SC(7, 15);
s += 8;
}
@@ -737,7 +737,7 @@ static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos)
for (i=0; i<5; i++) {
if (!qnos[i])
continue;
-
+
qnos[i]--;
size[i] = 0;
for (j=0; j<6; j++, b++) {
@@ -761,21 +761,21 @@ static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos)
}
}
}
- } while ((vs_total_ac_bits < size[0] + size[1] + size[2] + size[3] + size[4]) &&
+ } while ((vs_total_ac_bits < size[0] + size[1] + size[2] + size[3] + size[4]) &&
(qnos[0]|qnos[1]|qnos[2]|qnos[3]|qnos[4]));
}
/*
* This is a very rough initial implementaion. The performance is
- * horrible and the weighting is missing. But it's missing from the
+ * horrible and the weighting is missing. But it's missing from the
* decoding step also -- so at least we're on the same page with decoder ;-)
*/
-static inline void dv_encode_video_segment(DVVideoContext *s,
- uint8_t *dif,
+static inline void dv_encode_video_segment(DVVideoContext *s,
+ uint8_t *dif,
const uint16_t *mb_pos_ptr)
{
int mb_index, i, j, v;
- int mb_x, mb_y, c_offset, linesize;
+ int mb_x, mb_y, c_offset, linesize;
uint8_t* y_ptr;
uint8_t* data;
uint8_t* ptr;
@@ -783,13 +783,13 @@ static inline void dv_encode_video_segment(DVVideoContext *s,
DCTELEM block[64] __align8;
EncBlockInfo enc_blks[5*6];
PutBitContext pbs[5*6];
- PutBitContext* pb;
+ PutBitContext* pb;
EncBlockInfo* enc_blk;
int vs_bit_size = 0;
int qnos[5];
-
+
assert((((int)block) & 7) == 0);
-
+
enc_blk = &enc_blks[0];
pb = &pbs[0];
for(mb_index = 0; mb_index < 5; mb_index++) {
@@ -818,8 +818,8 @@ static inline void dv_encode_video_segment(DVVideoContext *s,
linesize = s->picture.linesize[6 - j];
if (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8))
do_edge_wrap = 1;
- }
-
+ }
+
/* Everything is set up -- now just copy data -> DCT block */
if (do_edge_wrap) { /* Edge wrap copy: 4x16 -> 8x8 */
uint8_t* d;
@@ -834,7 +834,7 @@ static inline void dv_encode_video_segment(DVVideoContext *s,
} else { /* Simple copy: 8x8 -> 8x8 */
s->get_pixels(block, data, linesize);
}
-
+
if(s->avctx->flags & CODEC_FLAG_INTERLACED_DCT)
enc_blk->dct_mode = dv_guess_dct_mode(block);
else
@@ -843,17 +843,17 @@ static inline void dv_encode_video_segment(DVVideoContext *s,
enc_blk->partial_bit_count = 0;
enc_blk->partial_bit_buffer = 0;
enc_blk->cur_ac = 0;
-
+
s->fdct[enc_blk->dct_mode](block);
-
- dv_set_class_number(block, enc_blk,
+
+ dv_set_class_number(block, enc_blk,
enc_blk->dct_mode ? ff_zigzag248_direct : ff_zigzag_direct, j/4);
-
+
init_put_bits(pb, ptr, block_sizes[j]/8);
put_bits(pb, 9, (uint16_t)(((enc_blk->mb[0] >> 3) - 1024 + 2) >> 2));
put_bits(pb, 1, enc_blk->dct_mode);
put_bits(pb, 2, enc_blk->cno);
-
+
vs_bit_size += enc_blk->bit_size[0] + enc_blk->bit_size[1] +
enc_blk->bit_size[2] + enc_blk->bit_size[3];
++enc_blk;
@@ -913,19 +913,19 @@ static int dv_encode_mt(AVCodecContext *avctx, void* sl)
/* NOTE: exactly one frame must be given (120000 bytes for NTSC,
144000 bytes for PAL) */
-static int dvvideo_decode_frame(AVCodecContext *avctx,
+static int dvvideo_decode_frame(AVCodecContext *avctx,
void *data, int *data_size,
uint8_t *buf, int buf_size)
{
DVVideoContext *s = avctx->priv_data;
-
+
s->sys = dv_frame_profile(buf);
if (!s->sys || buf_size < s->sys->frame_size)
return -1; /* NOTE: we only accept several full frames */
if(s->picture.data[0])
avctx->release_buffer(avctx, &s->picture);
-
+
s->picture.reference = 0;
s->picture.key_frame = 1;
s->picture.pict_type = FF_I_TYPE;
@@ -939,19 +939,19 @@ static int dvvideo_decode_frame(AVCodecContext *avctx,
s->picture.top_field_first = 0;
s->buf = buf;
- avctx->execute(avctx, dv_decode_mt, (void**)&dv_anchor[0], NULL,
+ avctx->execute(avctx, dv_decode_mt, (void**)&dv_anchor[0], NULL,
s->sys->difseg_size * 27);
-
+
emms_c();
/* return image */
*data_size = sizeof(AVFrame);
*(AVFrame*)data= s->picture;
-
+
return s->sys->frame_size;
}
-static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size,
+static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size,
void *data)
{
DVVideoContext *s = c->priv_data;
@@ -968,7 +968,7 @@ static int dvvideo_encode_frame(AVCodecContext *c, uint8_t *buf, int buf_size,
s->picture.pict_type = FF_I_TYPE;
s->buf = buf;
- c->execute(c, dv_encode_mt, (void**)&dv_anchor[0], NULL,
+ c->execute(c, dv_encode_mt, (void**)&dv_anchor[0], NULL,
s->sys->difseg_size * 27);
emms_c();
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-11 19:14:32 +0000