/*
* DV decoder
- * Copyright (c) 2002 Fabrice Bellard.
- * Copyright (c) 2004 Roman Shaposhnik.
+ * Copyright (c) 2002 Fabrice Bellard
+ * Copyright (c) 2004 Roman Shaposhnik
*
* DV encoder
- * Copyright (c) 2003 Roman Shaposhnik.
+ * Copyright (c) 2003 Roman Shaposhnik
*
* 50 Mbps (DVCPRO50) support
* Copyright (c) 2006 Daniel Maas <dmaas@maasdigital.com>
*/
/**
- * @file dv.c
+ * @file libavcodec/dv.c
* DV codec.
*/
#define ALT_BITSTREAM_READER
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
+#include "put_bits.h"
#include "simple_idct.h"
#include "dvdata.h"
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);
+ me_cmp_func ildct_cmp;
} DVVideoContext;
#define TEX_VLC_BITS 9
static inline void dv_calc_mb_coordinates(const DVprofile *d, int chan, int seq, int slot,
uint16_t *tbl)
{
- const static uint8_t off[] = { 2, 6, 8, 0, 4 };
- const static uint8_t shuf1[] = { 36, 18, 54, 0, 72 };
- const static uint8_t shuf2[] = { 24, 12, 36, 0, 48 };
- const static uint8_t shuf3[] = { 18, 9, 27, 0, 36 };
+ static const uint8_t off[] = { 2, 6, 8, 0, 4 };
+ static const uint8_t shuf1[] = { 36, 18, 54, 0, 72 };
+ static const uint8_t shuf2[] = { 24, 12, 36, 0, 48 };
+ static const uint8_t shuf3[] = { 18, 9, 27, 0, 36 };
- const static uint8_t l_start[] = {0, 4, 9, 13, 18, 22, 27, 31, 36, 40};
- const static uint8_t l_start_shuffled[] = { 9, 4, 13, 0, 18 };
+ static const uint8_t l_start[] = {0, 4, 9, 13, 18, 22, 27, 31, 36, 40};
+ static const uint8_t l_start_shuffled[] = { 9, 4, 13, 0, 18 };
- const static uint8_t serpent1[] = {0, 1, 2, 2, 1, 0,
+ static const uint8_t serpent1[] = {0, 1, 2, 2, 1, 0,
0, 1, 2, 2, 1, 0,
0, 1, 2, 2, 1, 0,
0, 1, 2, 2, 1, 0,
0, 1, 2};
- const static uint8_t serpent2[] = {0, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0,
+ static const uint8_t serpent2[] = {0, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0,
0, 1, 2, 3, 4, 5, 5, 4, 3, 2, 1, 0,
0, 1, 2, 3, 4, 5};
- const static uint8_t remap[][2] = {{ 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, /* dummy */
+ static const uint8_t remap[][2] = {{ 0, 0}, { 0, 0}, { 0, 0}, { 0, 0}, /* dummy */
{ 0, 0}, { 0, 1}, { 0, 2}, { 0, 3}, {10, 0},
{10, 1}, {10, 2}, {10, 3}, {20, 0}, {20, 1},
{20, 2}, {20, 3}, {30, 0}, {30, 1}, {30, 2},
/* Generic DSP setup */
dsputil_init(&dsp, avctx);
+ ff_set_cmp(&dsp, dsp.ildct_cmp, avctx->ildct_cmp);
s->get_pixels = dsp.get_pixels;
+ s->ildct_cmp = dsp.ildct_cmp[5];
/* 88DCT setup */
s->fdct[0] = dsp.fdct;
avctx->coded_frame = &s->picture;
s->avctx = avctx;
+ avctx->chroma_sample_location = AVCHROMA_LOC_TOPLEFT;
return 0;
}
}
/* mb_x and mb_y are in units of 8 pixels */
-static int dv_decode_video_segment(AVCodecContext *avctx, DVwork_chunk *work_chunk)
+static int dv_decode_video_segment(AVCodecContext *avctx, void *arg)
{
DVVideoContext *s = avctx->priv_data;
+ DVwork_chunk *work_chunk = arg;
int quant, dc, dct_mode, class1, j;
int mb_index, mb_x, mb_y, last_index;
int y_stride, linesize;
return pb;
}
-static av_always_inline void dv_set_class_number(DCTELEM* blk, EncBlockInfo* bi,
- const uint8_t* zigzag_scan,
- const int *weight, int bias)
+static av_always_inline int dv_guess_dct_mode(DVVideoContext *s, uint8_t *data, int linesize) {
+ if (s->avctx->flags & CODEC_FLAG_INTERLACED_DCT) {
+ int ps = s->ildct_cmp(NULL, data, NULL, linesize, 8) - 400;
+ if (ps > 0) {
+ int is = s->ildct_cmp(NULL, data , NULL, linesize<<1, 4) +
+ s->ildct_cmp(NULL, data + linesize, NULL, linesize<<1, 4);
+ return (ps > is);
+ }
+ }
+
+ return 0;
+}
+
+static av_always_inline int dv_init_enc_block(EncBlockInfo* bi, uint8_t *data, int linesize, DVVideoContext *s, int bias)
{
+ const int *weight;
+ const uint8_t* zigzag_scan;
+ DECLARE_ALIGNED_16(DCTELEM, blk[64]);
int i, area;
/* We offer two different methods for class number assignment: the
method suggested in SMPTE 314M Table 22, and an improved
int max = classes[0];
int prev = 0;
+ assert((((int)blk) & 15) == 0);
+
+ bi->area_q[0] = bi->area_q[1] = bi->area_q[2] = bi->area_q[3] = 0;
+ bi->partial_bit_count = 0;
+ bi->partial_bit_buffer = 0;
+ bi->cur_ac = 0;
+ if (data) {
+ bi->dct_mode = dv_guess_dct_mode(s, data, linesize);
+ s->get_pixels(blk, data, linesize);
+ s->fdct[bi->dct_mode](blk);
+ } else {
+ /* We rely on the fact that encoding all zeros leads to an immediate EOB,
+ which is precisely what the spec calls for in the "dummy" blocks. */
+ memset(blk, 0, sizeof(blk));
+ bi->dct_mode = 0;
+ }
bi->mb[0] = blk[0];
+ zigzag_scan = bi->dct_mode ? ff_zigzag248_direct : ff_zigzag_direct;
+ weight = bi->dct_mode ? dv_weight_248 : dv_weight_88;
+
for (area = 0; area < 4; area++) {
bi->prev[area] = prev;
bi->bit_size[area] = 1; // 4 areas 4 bits for EOB :)
}
bi->next[prev]= i;
}
-}
-
-//FIXME replace this by dsputil
-#define SC(x, y) ((s[x] - s[y]) ^ ((s[x] - s[y]) >> 7))
-static av_always_inline int dv_guess_dct_mode(DCTELEM *blk) {
- DCTELEM *s;
- 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) +
- SC(4, 12) + SC(5,13) + SC(6, 14) + SC(7, 15);
- s += 8;
- }
- /* Compute 2-4-8 score (small values give a better chance for 2-4-8 DCT) */
- s = blk;
- for (i = 0; i < 6; i++) {
- score248 += SC(0, 16) + SC(1,17) + SC(2, 18) + SC(3, 19) +
- SC(4, 20) + SC(5,21) + SC(6, 22) + SC(7, 23);
- s += 8;
- }
- return (score88 - score248 > -10);
+ return bi->bit_size[0] + bi->bit_size[1] + bi->bit_size[2] + bi->bit_size[3];
}
static inline void dv_guess_qnos(EncBlockInfo* blks, int* qnos)
}
}
-static int dv_encode_video_segment(AVCodecContext *avctx, DVwork_chunk *work_chunk)
+static int dv_encode_video_segment(AVCodecContext *avctx, void *arg)
{
DVVideoContext *s = avctx->priv_data;
+ DVwork_chunk *work_chunk = arg;
int mb_index, i, j;
- int mb_x, mb_y, c_offset, linesize;
+ int mb_x, mb_y, c_offset, linesize, y_stride;
uint8_t* y_ptr;
- uint8_t* data;
- uint8_t* ptr;
uint8_t* dif;
- int do_edge_wrap;
- DECLARE_ALIGNED_16(DCTELEM, block[64]);
- EncBlockInfo enc_blks[5*6];
- PutBitContext pbs[5*6];
+ uint8_t scratch[64];
+ EncBlockInfo enc_blks[5*DV_MAX_BPM];
+ PutBitContext pbs[5*DV_MAX_BPM];
PutBitContext* pb;
EncBlockInfo* enc_blk;
int vs_bit_size = 0;
- int qnos[5];
-
- assert((((int)block) & 15) == 0);
+ int qnos[5] = {15, 15, 15, 15, 15}; /* No quantization */
+ int* qnosp = &qnos[0];
dif = &s->buf[work_chunk->buf_offset*80];
enc_blk = &enc_blks[0];
- pb = &pbs[0];
for (mb_index = 0; mb_index < 5; mb_index++) {
dv_calculate_mb_xy(s, work_chunk, mb_index, &mb_x, &mb_y);
+
+ /* initializing luminance blocks */
+ if ((s->sys->pix_fmt == PIX_FMT_YUV420P) ||
+ (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8)) ||
+ (s->sys->height >= 720 && mb_y != 134)) {
+ y_stride = s->picture.linesize[0] << 3;
+ } else {
+ y_stride = 16;
+ }
y_ptr = s->picture.data[0] + ((mb_y * s->picture.linesize[0] + mb_x) << 3);
+ linesize = s->picture.linesize[0];
+
+ if (s->sys->video_stype == 4) { /* SD 422 */
+ vs_bit_size +=
+ dv_init_enc_block(enc_blk+0, y_ptr , linesize, s, 0) +
+ dv_init_enc_block(enc_blk+1, NULL , linesize, s, 0) +
+ dv_init_enc_block(enc_blk+2, y_ptr + 8 , linesize, s, 0) +
+ dv_init_enc_block(enc_blk+3, NULL , linesize, s, 0);
+ } else {
+ vs_bit_size +=
+ dv_init_enc_block(enc_blk+0, y_ptr , linesize, s, 0) +
+ dv_init_enc_block(enc_blk+1, y_ptr + 8 , linesize, s, 0) +
+ dv_init_enc_block(enc_blk+2, y_ptr + y_stride, linesize, s, 0) +
+ dv_init_enc_block(enc_blk+3, y_ptr + 8 + y_stride, linesize, s, 0);
+ }
+ enc_blk += 4;
+
+ /* initializing chrominance blocks */
c_offset = (((mb_y >> (s->sys->pix_fmt == PIX_FMT_YUV420P)) * s->picture.linesize[1] +
(mb_x >> ((s->sys->pix_fmt == PIX_FMT_YUV411P) ? 2 : 1))) << 3);
- do_edge_wrap = 0;
- qnos[mb_index] = 15; /* No quantization */
- ptr = dif + mb_index*80 + 4;
- for (j = 0; j < 6; j++) {
- int dummy = 0;
- if (s->sys->pix_fmt == PIX_FMT_YUV422P) { /* 4:2:2 */
- if (j == 0 || j == 2) {
- /* Y0 Y1 */
- data = y_ptr + ((j >> 1) * 8);
- linesize = s->picture.linesize[0];
- } else if (j > 3) {
- /* Cr Cb */
- data = s->picture.data[6 - j] + c_offset;
- linesize = s->picture.linesize[6 - j];
- } else {
- /* j=1 and j=3 are "dummy" blocks, used for AC data only */
- data = 0;
- linesize = 0;
- dummy = 1;
- }
- } else { /* 4:1:1 or 4:2:0 */
- if (j < 4) { /* Four Y blocks */
- /* NOTE: at end of line, the macroblock is handled as 420 */
- if (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x < (704 / 8)) {
- data = y_ptr + (j * 8);
- } else {
- data = y_ptr + ((j & 1) * 8) + ((j >> 1) * 8 * s->picture.linesize[0]);
- }
- linesize = s->picture.linesize[0];
- } else { /* Cr and Cb blocks */
- /* don't ask Fabrice why they inverted Cb and Cr ! */
- data = s->picture.data [6 - j] + c_offset;
- 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 */
+ for (j = 2; j; j--) {
+ uint8_t *c_ptr = s->picture.data[j] + c_offset;
+ linesize = s->picture.linesize[j];
+ y_stride = (mb_y == 134) ? 8 : (s->picture.linesize[j] << 3);
+ if (s->sys->pix_fmt == PIX_FMT_YUV411P && mb_x >= (704 / 8)) {
uint8_t* d;
- DCTELEM *b = block;
+ uint8_t* b = scratch;
for (i = 0; i < 8; i++) {
- d = data + 8 * linesize;
- b[0] = data[0]; b[1] = data[1]; b[2] = data[2]; b[3] = data[3];
- b[4] = d[0]; b[5] = d[1]; b[6] = d[2]; b[7] = d[3];
- data += linesize;
- b += 8;
+ d = c_ptr + (linesize << 3);
+ b[0] = c_ptr[0]; b[1] = c_ptr[1]; b[2] = c_ptr[2]; b[3] = c_ptr[3];
+ b[4] = d[0]; b[5] = d[1]; b[6] = d[2]; b[7] = d[3];
+ c_ptr += linesize;
+ b += 8;
}
- } else { /* Simple copy: 8x8 -> 8x8 */
- if (!dummy)
- s->get_pixels(block, data, linesize);
+ c_ptr = scratch;
+ linesize = 8;
}
- if (s->avctx->flags & CODEC_FLAG_INTERLACED_DCT)
- enc_blk->dct_mode = dv_guess_dct_mode(block);
- else
- enc_blk->dct_mode = 0;
- enc_blk->area_q[0] = enc_blk->area_q[1] = enc_blk->area_q[2] = enc_blk->area_q[3] = 0;
- enc_blk->partial_bit_count = 0;
- enc_blk->partial_bit_buffer = 0;
- enc_blk->cur_ac = 0;
-
- if (dummy) {
- /* We rely on the fact that encoding all zeros leads to an immediate EOB,
- which is precisely what the spec calls for in the "dummy" blocks. */
- memset(block, 0, sizeof(block));
- } else {
- s->fdct[enc_blk->dct_mode](block);
+ vs_bit_size += dv_init_enc_block( enc_blk++, c_ptr , linesize, s, 1);
+ if (s->sys->bpm == 8) {
+ vs_bit_size += dv_init_enc_block(enc_blk++, c_ptr + y_stride, linesize, s, 1);
}
-
- dv_set_class_number(block, enc_blk,
- enc_blk->dct_mode ? ff_zigzag248_direct : ff_zigzag_direct,
- enc_blk->dct_mode ? dv_weight_248 : dv_weight_88,
- j/4);
-
- init_put_bits(pb, ptr, s->sys->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;
- ++pb;
- ptr += s->sys->block_sizes[j]/8;
}
}
if (vs_total_ac_bits < vs_bit_size)
- dv_guess_qnos(&enc_blks[0], &qnos[0]);
+ dv_guess_qnos(&enc_blks[0], qnosp);
- for (i = 0; i < 5; i++) {
- dif[i*80 + 3] = qnos[i];
- }
+ /* DIF encoding process */
+ for (j=0; j<5*s->sys->bpm;) {
+ int start_mb = j;
+
+ dif[3] = *qnosp++;
+ dif += 4;
+
+ /* First pass over individual cells only */
+ for (i=0; i<s->sys->bpm; i++, j++) {
+ int sz = s->sys->block_sizes[i]>>3;
- /* First pass over individual cells only */
- for (j = 0; j < 5 * 6; j++)
- dv_encode_ac(&enc_blks[j], &pbs[j], &pbs[j+1]);
+ init_put_bits(&pbs[j], dif, sz);
+ put_bits(&pbs[j], 9, (uint16_t)(((enc_blks[j].mb[0] >> 3) - 1024 + 2) >> 2));
+ put_bits(&pbs[j], 1, enc_blks[j].dct_mode);
+ put_bits(&pbs[j], 2, enc_blks[j].cno);
+
+ dv_encode_ac(&enc_blks[j], &pbs[j], &pbs[j+1]);
+ dif += sz;
+ }
- /* Second pass over each MB space */
- for (j = 0; j < 5 * 6; j += 6) {
- pb = &pbs[j];
- for (i = 0; i < 6; i++) {
- if (enc_blks[i+j].partial_bit_count)
- pb = dv_encode_ac(&enc_blks[i+j], pb, &pbs[j+6]);
+ /* Second pass over each MB space */
+ pb = &pbs[start_mb];
+ for (i=0; i<s->sys->bpm; i++) {
+ if (enc_blks[start_mb+i].partial_bit_count)
+ pb = dv_encode_ac(&enc_blks[start_mb+i], pb, &pbs[start_mb+s->sys->bpm]);
}
}
/* Third and final pass over the whole video segment space */
pb = &pbs[0];
- for (j = 0; j < 5 * 6; j++) {
+ for (j=0; j<5*s->sys->bpm; j++) {
if (enc_blks[j].partial_bit_count)
- pb = dv_encode_ac(&enc_blks[j], pb, &pbs[6*5]);
+ pb = dv_encode_ac(&enc_blks[j], pb, &pbs[s->sys->bpm*5]);
if (enc_blks[j].partial_bit_count)
av_log(NULL, AV_LOG_ERROR, "ac bitstream overflow\n");
}
- for (j = 0; j < 5 * 6; j++)
+ for (j=0; j<5*s->sys->bpm; j++)
flush_put_bits(&pbs[j]);
return 0;
144000 bytes for PAL - or twice those for 50Mbps) */
static int dvvideo_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;
DVVideoContext *s = avctx->priv_data;
s->sys = dv_frame_profile(buf);
* compression scheme (if any).
*/
int apt = (c->sys->pix_fmt == PIX_FMT_YUV420P ? 0 : 1);
- int stype = (c->sys->pix_fmt == PIX_FMT_YUV422P ? 4 : 0);
uint8_t aspect = 0;
- if ((int)(av_q2d(c->avctx->sample_aspect_ratio) * c->avctx->width / c->avctx->height * 10) == 17) /* 16:9 */
+ if ((int)(av_q2d(c->avctx->sample_aspect_ratio) * c->avctx->width / c->avctx->height * 10) >= 17) /* 16:9 */
aspect = 0x02;
buf[0] = (uint8_t)pack_id;
0xf; /* reserved -- always 1 */
buf[3] = (3 << 6) | /* reserved -- always 1 */
(c->sys->dsf << 5) | /* system: 60fields/50fields */
- stype; /* signal type video compression */
+ c->sys->video_stype; /* signal type video compression */
buf[4] = 0xff; /* VISC: 0xff -- no information */
break;
case dv_video_control:
projects / frescor / ffmpeg.git / blobdiff