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ffmpeg.wasm-core
Commit e026ee04 authored by Anton Khirnov's avatar Anton Khirnov
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mpeg4videodec: move sprite_{shift,traj} from MpegEncContext to Mpeg4DecContext

parent 513d849b
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Showing with 29 additions and 27 deletions
libavcodec/mpeg4video.h
View file @ e026ee04
......@@ -68,6 +68,10 @@ typedef struct Mpeg4DecContext {
int vol_sprite_usage;
int sprite_brightness_change;
int num_sprite_warping_points;
///< sprite trajectory points
uint16_t sprite_traj[4][2];
///< sprite shift [isChroma]
int sprite_shift[2];
// reversible vlc
int rvlc;
......
libavcodec/mpeg4videodec.c
View file @ e026ee04
......@@ -188,11 +188,11 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
y = get_xbits(gb, length);
skip_bits1(gb); /* marker bit */
s->sprite_traj[i][0] = d[i][0] = x;
s->sprite_traj[i][1] = d[i][1] = y;
ctx->sprite_traj[i][0] = d[i][0] = x;
ctx->sprite_traj[i][1] = d[i][1] = y;
}
for (; i < 4; i++)
s->sprite_traj[i][0] = s->sprite_traj[i][1] = 0;
ctx->sprite_traj[i][0] = ctx->sprite_traj[i][1] = 0;
while ((1 << alpha) < w)
alpha++;
......@@ -250,8 +250,8 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
s->sprite_delta[0][1] =
s->sprite_delta[1][0] = 0;
s->sprite_delta[1][1] = a;
s->sprite_shift[0] =
s->sprite_shift[1] = 0;
ctx->sprite_shift[0] =
ctx->sprite_shift[1] = 0;
break;
case 1: // GMC only
s->sprite_offset[0][0] = sprite_ref[0][0] - a * vop_ref[0][0];
......@@ -264,8 +264,8 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
s->sprite_delta[0][1] =
s->sprite_delta[1][0] = 0;
s->sprite_delta[1][1] = a;
s->sprite_shift[0] =
s->sprite_shift[1] = 0;
ctx->sprite_shift[0] =
ctx->sprite_shift[1] = 0;
break;
case 2:
s->sprite_offset[0][0] = (sprite_ref[0][0] << (alpha + rho)) +
......@@ -293,8 +293,8 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
s->sprite_delta[1][0] = (-r * sprite_ref[0][1] + virtual_ref[0][1]);
s->sprite_delta[1][1] = (-r * sprite_ref[0][0] + virtual_ref[0][0]);
s->sprite_shift[0] = alpha + rho;
s->sprite_shift[1] = alpha + rho + 2;
ctx->sprite_shift[0] = alpha + rho;
ctx->sprite_shift[1] = alpha + rho + 2;
break;
case 3:
min_ab = FFMIN(alpha, beta);
......@@ -329,35 +329,35 @@ static int mpeg4_decode_sprite_trajectory(Mpeg4DecContext *ctx, GetBitContext *g
s->sprite_delta[1][0] = (-r * sprite_ref[0][1] + virtual_ref[0][1]) * h3;
s->sprite_delta[1][1] = (-r * sprite_ref[0][1] + virtual_ref[1][1]) * w3;
s->sprite_shift[0] = alpha + beta + rho - min_ab;
s->sprite_shift[1] = alpha + beta + rho - min_ab + 2;
ctx->sprite_shift[0] = alpha + beta + rho - min_ab;
ctx->sprite_shift[1] = alpha + beta + rho - min_ab + 2;
break;
}
/* try to simplify the situation */
if (s->sprite_delta[0][0] == a << s->sprite_shift[0] &&
if (s->sprite_delta[0][0] == a << ctx->sprite_shift[0] &&
s->sprite_delta[0][1] == 0 &&
s->sprite_delta[1][0] == 0 &&
s->sprite_delta[1][1] == a << s->sprite_shift[0]) {
s->sprite_offset[0][0] >>= s->sprite_shift[0];
s->sprite_offset[0][1] >>= s->sprite_shift[0];
s->sprite_offset[1][0] >>= s->sprite_shift[1];
s->sprite_offset[1][1] >>= s->sprite_shift[1];
s->sprite_delta[1][1] == a << ctx->sprite_shift[0]) {
s->sprite_offset[0][0] >>= ctx->sprite_shift[0];
s->sprite_offset[0][1] >>= ctx->sprite_shift[0];
s->sprite_offset[1][0] >>= ctx->sprite_shift[1];
s->sprite_offset[1][1] >>= ctx->sprite_shift[1];
s->sprite_delta[0][0] = a;
s->sprite_delta[0][1] = 0;
s->sprite_delta[1][0] = 0;
s->sprite_delta[1][1] = a;
s->sprite_shift[0] = 0;
s->sprite_shift[1] = 0;
ctx->sprite_shift[0] = 0;
ctx->sprite_shift[1] = 0;
s->real_sprite_warping_points = 1;
} else {
int shift_y = 16 - s->sprite_shift[0];
int shift_c = 16 - s->sprite_shift[1];
int shift_y = 16 - ctx->sprite_shift[0];
int shift_c = 16 - ctx->sprite_shift[1];
for (i = 0; i < 2; i++) {
s->sprite_offset[0][i] <<= shift_y;
s->sprite_offset[1][i] <<= shift_c;
s->sprite_delta[0][i] <<= shift_y;
s->sprite_delta[1][i] <<= shift_y;
s->sprite_shift[i] = 16;
ctx->sprite_shift[i] = 16;
}
s->real_sprite_warping_points = ctx->num_sprite_warping_points;
}
......@@ -493,7 +493,7 @@ static inline int get_amv(Mpeg4DecContext *ctx, int n)
} else {
dx = s->sprite_delta[n][0];
dy = s->sprite_delta[n][1];
shift = s->sprite_shift[0];
shift = ctx->sprite_shift[0];
if (n)
dy -= 1 << (shift + a + 1);
else
......
libavcodec/mpegvideo.h
View file @ e026ee04
......@@ -580,10 +580,8 @@ typedef struct MpegEncContext {
uint16_t pp_field_time;
uint16_t pb_field_time; ///< like above, just for interlaced
int real_sprite_warping_points;
uint16_t sprite_traj[4][2]; ///< sprite trajectory points
int sprite_offset[2][2]; ///< sprite offset[isChroma][isMVY]
int sprite_delta[2][2]; ///< sprite_delta [isY][isMVY]
int sprite_shift[2]; ///< sprite shift [isChroma]
int mcsel;
int quant_precision;
int quarter_sample; ///< 1->qpel, 0->half pel ME/MC
......
libavcodec/vaapi_mpeg4.c
View file @ e026ee04
......@@ -75,8 +75,8 @@ static int vaapi_mpeg4_start_frame(AVCodecContext *avctx, av_unused const uint8_
pic_param->vol_fields.bits.resync_marker_disable = !ctx->resync_marker;
pic_param->no_of_sprite_warping_points = ctx->num_sprite_warping_points;
for (i = 0; i < ctx->num_sprite_warping_points && i < 3; i++) {
pic_param->sprite_trajectory_du[i] = s->sprite_traj[i][0];
pic_param->sprite_trajectory_dv[i] = s->sprite_traj[i][1];
pic_param->sprite_trajectory_du[i] = ctx->sprite_traj[i][0];
pic_param->sprite_trajectory_dv[i] = ctx->sprite_traj[i][1];
}
pic_param->quant_precision = s->quant_precision;
pic_param->vop_fields.value = 0; /* reset all bits */
......
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