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++;
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];
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)) +
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);
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;
}
} 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
* Decode a block.
* @return <0 if an error occurred
*/
-static inline int mpeg4_decode_block(MpegEncContext *s, int16_t *block,
+static inline int mpeg4_decode_block(Mpeg4DecContext *ctx, int16_t *block,
int n, int coded, int intra, int rvlc)
{
+ MpegEncContext *s = &ctx->m;
int level, i, last, run, qmul, qadd;
int av_uninit(dc_pred_dir);
RLTable *rl;
// Note intra & rvlc should be optimized away if this is inlined
if (intra) {
- if (s->use_intra_dc_vlc) {
+ if (ctx->use_intra_dc_vlc) {
/* DC coef */
if (s->partitioned_frame) {
level = s->dc_val[0][s->block_index[n]];
not_coded:
if (intra) {
- if (!s->use_intra_dc_vlc) {
+ if (!ctx->use_intra_dc_vlc) {
block[0] = ff_mpeg4_pred_dc(s, n, block[0], &dc_pred_dir, 0);
i -= i >> 31; // if (i == -1) i = 0;
mb_type = s->current_picture.mb_type[xy];
cbp = s->cbp_table[xy];
- s->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
+ ctx->use_intra_dc_vlc = s->qscale < ctx->intra_dc_threshold;
if (s->current_picture.qscale_table[xy] != s->qscale)
ff_set_qscale(s, s->current_picture.qscale_table[xy]);
s->dsp.clear_blocks(s->block[0]);
/* decode each block */
for (i = 0; i < 6; i++) {
- if (mpeg4_decode_block(s, block[i], i, cbp & 32, s->mb_intra, ctx->rvlc) < 0) {
+ if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, s->mb_intra, ctx->rvlc) < 0) {
av_log(s->avctx, AV_LOG_ERROR,
"texture corrupted at %d %d %d\n",
s->mb_x, s->mb_y, s->mb_intra);
}
cbp = (cbpc & 3) | (cbpy << 2);
- s->use_intra_dc_vlc = s->qscale < s->intra_dc_threshold;
+ ctx->use_intra_dc_vlc = s->qscale < ctx->intra_dc_threshold;
if (dquant)
ff_set_qscale(s, s->qscale + quant_tab[get_bits(&s->gb, 2)]);
s->dsp.clear_blocks(s->block[0]);
/* decode each block */
for (i = 0; i < 6; i++) {
- if (mpeg4_decode_block(s, block[i], i, cbp & 32, 1, 0) < 0)
+ if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, 1, 0) < 0)
return -1;
cbp += cbp;
}
/* decode each block */
for (i = 0; i < 6; i++) {
- if (mpeg4_decode_block(s, block[i], i, cbp & 32, 0, 0) < 0)
+ if (mpeg4_decode_block(ctx, block[i], i, cbp & 32, 0, 0) < 0)
return -1;
cbp += cbp;
}
ctx->divx_version = ver;
ctx->divx_build = build;
s->divx_packed = e == 3 && last == 'p';
- if (s->divx_packed && !s->showed_packed_warning) {
+ if (s->divx_packed && !ctx->showed_packed_warning) {
av_log(s->avctx, AV_LOG_INFO, "Video uses a non-standard and "
"wasteful way to store B-frames ('packed B-frames'). "
"Consider using a tool like VirtualDub or avidemux to fix it.\n");
- s->showed_packed_warning = 1;
+ ctx->showed_packed_warning = 1;
}
}
av_log(s->avctx, AV_LOG_ERROR, "Header truncated\n");
return -1;
}
- s->intra_dc_threshold = ff_mpeg4_dc_threshold[get_bits(gb, 3)];
+ ctx->intra_dc_threshold = ff_mpeg4_dc_threshold[get_bits(gb, 3)];
if (!s->progressive_sequence) {
s->top_field_first = get_bits1(gb);
s->alternate_scan = get_bits1(gb);
s->data_partitioning, ctx->resync_marker,
ctx->num_sprite_warping_points, s->sprite_warping_accuracy,
1 - s->no_rounding, s->vo_type,
- s->vol_control_parameters ? " VOLC" : " ", s->intra_dc_threshold,
+ s->vol_control_parameters ? " VOLC" : " ", ctx->intra_dc_threshold,
ctx->cplx_estimation_trash_i, ctx->cplx_estimation_trash_p,
ctx->cplx_estimation_trash_b,
s->time,
projects / ffmpeg / blobdiff