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avcodec/sheervideo: add interlaced YCbCr(A) 4:2:2:4 8-bit support

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Signed-off-by: Paul B Mahol <onemda@gmail.com>
pull/180/merge
Paul B Mahol 9 years ago
parent 37bb600405
commit e826ceeb55
1 changed files with 178 additions and 0 deletions
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  1. 178
      libavcodec/sheervideo.c

178
libavcodec/sheervideo.c
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@ -665,6 +665,44 @@ static const uint8_t l_u_ybri[256] = {
14, 13, 13, 13, 12, 12, 11, 11, 10, 10, 9, 8, 8, 6, 5, 2,
};
static const uint8_t l_y_byryi[256] = {
3, 3, 4, 4, 5, 5, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8,
8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10,
10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 12,
12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12,
12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10,
10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8,
8, 8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 4, 4, 3,
};
static const uint8_t l_u_byryi[256] = {
1, 3, 4, 6, 6, 7, 8, 8, 9, 9, 10, 10, 10, 11, 11, 11,
12, 12, 12, 12, 13, 13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15,
15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16,
16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 16, 15, 15, 15,
15, 15, 15, 15, 14, 14, 14, 14, 14, 13, 13, 13, 13, 12, 12, 12,
12, 11, 11, 11, 10, 10, 10, 9, 9, 8, 8, 7, 7, 5, 4, 3,
};
static void decode_ca4p(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
{
SheerVideoContext *s = avctx->priv_data;
@ -1014,6 +1052,56 @@ static void decode_ca2p(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
}
}
static void decode_c82i(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
{
SheerVideoContext *s = avctx->priv_data;
uint8_t *dst_y, *dst_u, *dst_v, *dst_a;
int x, y;
dst_y = p->data[0];
dst_u = p->data[1];
dst_v = p->data[2];
dst_a = p->data[3];
for (y = 0; y < avctx->height; y += 1) {
if (get_bits1(gb)) {
for (x = 0; x < avctx->width; x += 2) {
dst_a[x ] = get_bits(gb, 8);
dst_y[x ] = get_bits(gb, 8);
dst_u[x / 2] = get_bits(gb, 8);
dst_a[x + 1] = get_bits(gb, 8);
dst_y[x + 1] = get_bits(gb, 8);
dst_v[x / 2] = get_bits(gb, 8);
}
} else {
int pred[4] = { 125, -128, -128, 125 };
for (x = 0; x < avctx->width; x += 2) {
int y1, y2, u, v, a1, a2;
a1 = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
y1 = get_vlc2(gb, s->vlc[0].table, s->vlc[0].bits, 2);
u = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
a2 = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
y2 = get_vlc2(gb, s->vlc[0].table, s->vlc[0].bits, 2);
v = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
dst_a[x ] = pred[3] = (a1 + pred[3]) & 0xff;
dst_a[x + 1] = pred[3] = (a2 + pred[3]) & 0xff;
}
}
dst_y += p->linesize[0];
dst_u += p->linesize[1];
dst_v += p->linesize[2];
dst_a += p->linesize[3];
}
}
static void decode_c82p(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
{
SheerVideoContext *s = avctx->priv_data;
@ -1199,6 +1287,80 @@ static void decode_ybyr(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
}
}
static void decode_byryi(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
{
SheerVideoContext *s = avctx->priv_data;
uint8_t *dst_y, *dst_u, *dst_v;
int x, y;
dst_y = p->data[0];
dst_u = p->data[1];
dst_v = p->data[2];
if (get_bits1(gb)) {
for (x = 0; x < avctx->width; x += 2) {
dst_y[x ] = get_bits(gb, 8);
dst_u[x / 2] = get_bits(gb, 8);
dst_y[x + 1] = get_bits(gb, 8);
dst_v[x / 2] = get_bits(gb, 8);
}
} else {
int pred[4] = { 125, -128, -128, 0 };
for (x = 0; x < avctx->width; x += 2) {
int y1, y2, u, v;
y1 = get_vlc2(gb, s->vlc[0].table, s->vlc[0].bits, 2);
u = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
y2 = get_vlc2(gb, s->vlc[0].table, s->vlc[0].bits, 2);
v = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
dst_y[x ] = pred[0] = (y1 + pred[0]) & 0xff;
dst_u[x / 2] = pred[1] = (u + pred[1]) & 0xff;
dst_y[x + 1] = pred[0] = (y2 + pred[0]) & 0xff;
dst_v[x / 2] = pred[2] = (v + pred[2]) & 0xff;
}
}
dst_y += p->linesize[0];
dst_u += p->linesize[1];
dst_v += p->linesize[2];
for (y = 1; y < avctx->height; y++) {
if (get_bits1(gb)) {
for (x = 0; x < avctx->width; x += 2) {
dst_y[x ] = get_bits(gb, 8);
dst_u[x / 2] = get_bits(gb, 8);
dst_y[x + 1] = get_bits(gb, 8);
dst_v[x / 2] = get_bits(gb, 8);
}
} else {
int pred_L[4];
int y1, y2, u, v;
pred_L[0] = dst_y[-p->linesize[0]];
pred_L[1] = dst_u[-p->linesize[1]];
pred_L[2] = dst_v[-p->linesize[2]];
for (x = 0; x < avctx->width; x += 2) {
y1 = get_vlc2(gb, s->vlc[0].table, s->vlc[0].bits, 2);
u = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
y2 = get_vlc2(gb, s->vlc[0].table, s->vlc[0].bits, 2);
v = get_vlc2(gb, s->vlc[1].table, s->vlc[1].bits, 2);
dst_y[x ] = pred_L[0] = (y1 + pred_L[0]) & 0xff;
dst_u[x / 2] = pred_L[1] = (u + pred_L[1]) & 0xff;
dst_y[x + 1] = pred_L[0] = (y2 + pred_L[0]) & 0xff;
dst_v[x / 2] = pred_L[2] = (v + pred_L[2]) & 0xff;
}
}
dst_y += p->linesize[0];
dst_u += p->linesize[1];
dst_v += p->linesize[2];
}
}
static void decode_byry(AVCodecContext *avctx, AVFrame *p, GetBitContext *gb)
{
SheerVideoContext *s = avctx->priv_data;
@ -2171,6 +2333,14 @@ static int decode_frame(AVCodecContext *avctx,
build_vlc(&s->vlc[1], l_u_byry, 256);
}
break;
case MKTAG('B', 'Y', 'R', 'y'):
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
s->decode_frame = decode_byryi;
if (s->format != format) {
build_vlc(&s->vlc[0], l_y_byryi, 256);
build_vlc(&s->vlc[1], l_u_byryi, 256);
}
break;
case MKTAG('Y', 'b', 'Y', 'r'):
avctx->pix_fmt = AV_PIX_FMT_YUV422P;
s->decode_frame = decode_ybyr;
@ -2187,6 +2357,14 @@ static int decode_frame(AVCodecContext *avctx,
build_vlc(&s->vlc[1], l_u_byry, 256);
}
break;
case MKTAG('C', '8', '2', 'i'):
avctx->pix_fmt = AV_PIX_FMT_YUVA422P;
s->decode_frame = decode_c82i;
if (s->format != format) {
build_vlc(&s->vlc[0], l_y_byryi, 256);
build_vlc(&s->vlc[1], l_u_byryi, 256);
}
break;
case MKTAG(0xa2, 'Y', 'R', 'Y'):
avctx->pix_fmt = AV_PIX_FMT_YUV422P10;
s->decode_frame = decode_yry10;

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