/* Adds a new entry to the usenet subscription */
int
usenet_sub_add(usenet_sub_t self,
int has_not,
const char *pattern,
struct usenet_expr *expressions,
size_t count)
{
char *entry_sub;
size_t entry_length;
/* Figure out what the new entry is */
entry_sub = alloc_sub(self, has_not, pattern, expressions, count);
if (entry_sub == NULL) {
return -1;
}
/* And how long it is */
entry_length = strlen(entry_sub);
/* If we had no previous expression, then simply create one */
if (self->expression == NULL) {
self->expression_size = strlen(ONE_SUB) + entry_length - 1;
self->expression = malloc(self->expression_size);
if (self->expression == NULL) {
free(entry_sub);
return -1;
}
snprintf(self->expression, self->expression_size, ONE_SUB, entry_sub);
} else {
/* We need to extend the existing expression */
size_t new_size;
char *new_expression;
/* Expand the expression buffer */
new_size = self->expression_size + entry_length + 4;
new_expression = realloc(self->expression, new_size);
if (new_expression == NULL) {
return -1;
}
/* Overwrite the trailing right paren with the new stuff */
snprintf(new_expression + self->expression_size - 2,
new_size - self->expression_size + 2,
" || %s)", entry_sub);
self->expression = new_expression;
self->expression_size = new_size;
}
/* If we're connected then resubscribe */
if (self->handle != NULL) {
fprintf(stderr, "%s: hmmm\n", progname);
abort();
}
/* Clean up */
free(entry_sub);
return 0;
}
void * malloc(size_t size) {
ALLOCHEADER * ptr;
if(size == 0)
return 0;
//Set alignement
size = (size + ALLOCALIGN - 1) & -ALLOCALIGN;
ptr = alloc_sub(&heapdescr, size + sizeof(ALLOCHEADER));
if(ptr) {
ptr->size = size + sizeof(ALLOCHEADER);
ptr->integrity = ptr->size ^ (uint32_t) ptr ^ MOTIF;
ptr = (ALLOCHEADER *) ((uint8_t *) ptr + sizeof(ALLOCHEADER));
}
return ptr;
}
// Initialize sub from sub->avsub.
static void read_sub_bitmaps(struct sd *sd, struct sub *sub)
{
struct MPOpts *opts = sd->opts;
struct sd_lavc_priv *priv = sd->priv;
AVSubtitle *avsub = &sub->avsub;
MP_TARRAY_GROW(priv, sub->inbitmaps, avsub->num_rects);
packer_set_size(priv->packer, avsub->num_rects);
// If we blur, we want a transparent region around the bitmap data to
// avoid "cut off" artifacts on the borders.
bool apply_blur = opts->sub_gauss != 0.0f;
int extend = apply_blur ? 5 : 0;
// Assume consumers may use bilinear scaling on it (2x2 filter)
int padding = 1 + extend;
priv->packer->padding = padding;
// For the sake of libswscale, which in some cases takes sub-rects as
// source images, and wants 16 byte start pointer and stride alignment.
int align = 4;
for (int i = 0; i < avsub->num_rects; i++) {
struct AVSubtitleRect *r = avsub->rects[i];
struct sub_bitmap *b = &sub->inbitmaps[sub->count];
if (r->type != SUBTITLE_BITMAP) {
MP_ERR(sd, "unsupported subtitle type from libavcodec\n");
continue;
}
if (!(r->flags & AV_SUBTITLE_FLAG_FORCED) && opts->forced_subs_only)
continue;
if (r->w <= 0 || r->h <= 0)
continue;
b->bitmap = r; // save for later (dumb hack to avoid more complexity)
priv->packer->in[sub->count] = (struct pos){r->w + (align - 1), r->h};
sub->count++;
}
priv->packer->count = sub->count;
if (packer_pack(priv->packer) < 0) {
MP_ERR(sd, "Unable to pack subtitle bitmaps.\n");
sub->count = 0;
}
if (!sub->count)
return;
struct pos bb[2];
packer_get_bb(priv->packer, bb);
sub->bound_w = bb[1].x;
sub->bound_h = bb[1].y;
if (!sub->data || sub->data->w < sub->bound_w || sub->data->h < sub->bound_h) {
talloc_free(sub->data);
sub->data = mp_image_alloc(IMGFMT_BGRA, priv->packer->w, priv->packer->h);
if (!sub->data) {
sub->count = 0;
return;
}
talloc_steal(priv, sub->data);
}
for (int i = 0; i < sub->count; i++) {
struct sub_bitmap *b = &sub->inbitmaps[i];
struct pos pos = priv->packer->result[i];
struct AVSubtitleRect *r = b->bitmap;
#if HAVE_AV_SUBTITLE_NOPICT
uint8_t **data = r->data;
int *linesize = r->linesize;
#else
uint8_t **data = r->pict.data;
int *linesize = r->pict.linesize;
#endif
b->w = r->w;
b->h = r->h;
b->x = r->x;
b->y = r->y;
// Choose such that the extended start position is aligned.
pos.x = MP_ALIGN_UP(pos.x - extend, align) + extend;
b->src_x = pos.x;
b->src_y = pos.y;
b->stride = sub->data->stride[0];
b->bitmap = sub->data->planes[0] + pos.y * b->stride + pos.x * 4;
sub->src_w = FFMAX(sub->src_w, b->x + b->w);
sub->src_h = FFMAX(sub->src_h, b->y + b->h);
assert(r->nb_colors > 0);
assert(r->nb_colors <= 256);
uint32_t pal[256] = {0};
memcpy(pal, data[1], r->nb_colors * 4);
convert_pal(pal, 256, opts->sub_gray);
for (int y = -padding; y < b->h + padding; y++) {
uint32_t *out = (uint32_t*)((char*)b->bitmap + y * b->stride);
int start = 0;
for (int x = -padding; x < 0; x++)
out[x] = 0;
if (y >= 0 && y < b->h) {
uint8_t *in = data[0] + y * linesize[0];
for (int x = 0; x < b->w; x++)
*out++ = pal[*in++];
start = b->w;
}
for (int x = start; x < b->w + padding; x++)
*out++ = 0;
}
b->bitmap = (char*)b->bitmap - extend * b->stride - extend * 4;
b->src_x -= extend;
b->src_y -= extend;
b->x -= extend;
b->y -= extend;
b->w += extend * 2;
b->h += extend * 2;
if (apply_blur)
mp_blur_rgba_sub_bitmap(b, opts->sub_gauss);
}
}
static void decode(struct sd *sd, struct demux_packet *packet)
{
struct MPOpts *opts = sd->opts;
struct sd_lavc_priv *priv = sd->priv;
AVCodecContext *ctx = priv->avctx;
double pts = packet->pts;
double endpts = MP_NOPTS_VALUE;
double duration = packet->duration;
AVSubtitle sub;
AVPacket pkt;
// libavformat sets duration==0, even if the duration is unknown. Some files
// also have actually subtitle packets with duration explicitly set to 0
// (yes, at least some of such mkv files were muxed by libavformat).
// Assume there are no bitmap subs that actually use duration==0 for
// hidden subtitle events.
if (duration == 0)
duration = -1;
if (pts == MP_NOPTS_VALUE)
MP_WARN(sd, "Subtitle with unknown start time.\n");
mp_set_av_packet(&pkt, packet, &priv->pkt_timebase);
int got_sub;
int res = avcodec_decode_subtitle2(ctx, &sub, &got_sub, &pkt);
if (res < 0 || !got_sub)
return;
if (sub.pts != AV_NOPTS_VALUE)
pts = sub.pts / (double)AV_TIME_BASE;
if (pts != MP_NOPTS_VALUE) {
if (sub.end_display_time > sub.start_display_time &&
sub.end_display_time != UINT32_MAX)
{
duration = (sub.end_display_time - sub.start_display_time) / 1000.0;
}
pts += sub.start_display_time / 1000.0;
if (duration >= 0)
endpts = pts + duration;
// set end time of previous sub
struct sub *prev = &priv->subs[0];
if (prev->valid) {
if (prev->endpts == MP_NOPTS_VALUE || prev->endpts > pts)
prev->endpts = pts;
if (opts->sub_fix_timing && pts - prev->endpts <= SUB_GAP_THRESHOLD)
prev->endpts = pts;
for (int n = 0; n < priv->num_seekpoints; n++) {
if (priv->seekpoints[n].pts == prev->pts) {
priv->seekpoints[n].endpts = prev->endpts;
break;
}
}
}
// This subtitle packet only signals the end of subtitle display.
if (!sub.num_rects) {
avsubtitle_free(&sub);
return;
}
}
alloc_sub(priv);
struct sub *current = &priv->subs[0];
current->valid = true;
current->pts = pts;
current->endpts = endpts;
current->avsub = sub;
read_sub_bitmaps(sd, current);
if (pts != MP_NOPTS_VALUE) {
for (int n = 0; n < priv->num_seekpoints; n++) {
if (priv->seekpoints[n].pts == pts)
goto skip;
}
// Set arbitrary limit as safe-guard against insane files.
if (priv->num_seekpoints >= 10000)
MP_TARRAY_REMOVE_AT(priv->seekpoints, priv->num_seekpoints, 0);
MP_TARRAY_APPEND(priv, priv->seekpoints, priv->num_seekpoints,
(struct seekpoint){.pts = pts, .endpts = endpts});
skip: ;
}
}
static void decode(struct sd *sd, struct demux_packet *packet)
{
struct MPOpts *opts = sd->opts;
struct sd_lavc_priv *priv = sd->priv;
AVCodecContext *ctx = priv->avctx;
double pts = packet->pts;
double duration = packet->duration;
AVSubtitle sub;
AVPacket pkt;
// libavformat sets duration==0, even if the duration is unknown.
// Assume there are no bitmap subs that actually use duration==0 for
// hidden subtitle events.
if (duration == 0)
duration = -1;
if (pts == MP_NOPTS_VALUE)
MP_WARN(sd, "Subtitle with unknown start time.\n");
av_init_packet(&pkt);
pkt.data = packet->buffer;
pkt.size = packet->len;
int got_sub;
int res = avcodec_decode_subtitle2(ctx, &sub, &got_sub, &pkt);
if (res < 0 || !got_sub)
return;
if (pts != MP_NOPTS_VALUE) {
if (sub.end_display_time > sub.start_display_time &&
sub.end_display_time != UINT32_MAX)
{
duration = (sub.end_display_time - sub.start_display_time) / 1000.0;
}
pts += sub.start_display_time / 1000.0;
}
double endpts = MP_NOPTS_VALUE;
if (pts != MP_NOPTS_VALUE && duration >= 0)
endpts = pts + duration;
// set end time of previous sub
if (priv->subs[0].endpts == MP_NOPTS_VALUE || priv->subs[0].endpts > pts)
priv->subs[0].endpts = pts;
alloc_sub(priv);
struct sub *current = &priv->subs[0];
current->valid = true;
current->pts = pts;
current->endpts = endpts;
current->avsub = sub;
MP_TARRAY_GROW(priv, current->inbitmaps, sub.num_rects);
MP_TARRAY_GROW(priv, current->imgs, sub.num_rects);
for (int i = 0; i < sub.num_rects; i++) {
struct AVSubtitleRect *r = sub.rects[i];
struct sub_bitmap *b = ¤t->inbitmaps[current->count];
struct osd_bmp_indexed *img = ¤t->imgs[current->count];
if (r->type != SUBTITLE_BITMAP) {
MP_ERR(sd, "unsupported subtitle type from libavcodec\n");
continue;
}
if (!(r->flags & AV_SUBTITLE_FLAG_FORCED) && opts->forced_subs_only)
continue;
if (r->w <= 0 || r->h <= 0)
continue;
img->bitmap = r->pict.data[0];
assert(r->nb_colors > 0);
assert(r->nb_colors * 4 <= sizeof(img->palette));
memcpy(img->palette, r->pict.data[1], r->nb_colors * 4);
b->bitmap = img;
b->stride = r->pict.linesize[0];
b->w = r->w;
b->h = r->h;
b->x = r->x;
b->y = r->y;
current->count++;
}
}
static void decode(struct sd *sd, struct demux_packet *packet)
{
struct MPOpts *opts = sd->opts;
struct sd_lavc_priv *priv = sd->priv;
AVCodecContext *ctx = priv->avctx;
double pts = packet->pts;
double endpts = MP_NOPTS_VALUE;
double duration = packet->duration;
AVSubtitle sub;
AVPacket pkt;
// libavformat sets duration==0, even if the duration is unknown. Some files
// also have actually subtitle packets with duration explicitly set to 0
// (yes, at least some of such mkv files were muxed by libavformat).
// Assume there are no bitmap subs that actually use duration==0 for
// hidden subtitle events.
if (duration == 0)
duration = -1;
if (pts == MP_NOPTS_VALUE)
MP_WARN(sd, "Subtitle with unknown start time.\n");
mp_set_av_packet(&pkt, packet, &priv->pkt_timebase);
int got_sub;
int res = avcodec_decode_subtitle2(ctx, &sub, &got_sub, &pkt);
if (res < 0 || !got_sub)
return;
if (sub.pts != AV_NOPTS_VALUE)
pts = sub.pts / (double)AV_TIME_BASE;
if (pts != MP_NOPTS_VALUE) {
if (sub.end_display_time > sub.start_display_time &&
sub.end_display_time != UINT32_MAX)
{
duration = (sub.end_display_time - sub.start_display_time) / 1000.0;
}
pts += sub.start_display_time / 1000.0;
if (duration >= 0)
endpts = pts + duration;
// set end time of previous sub
struct sub *prev = &priv->subs[0];
if (prev->valid) {
if (prev->endpts == MP_NOPTS_VALUE || prev->endpts > pts)
prev->endpts = pts;
if (opts->sub_fix_timing && pts - prev->endpts <= SUB_GAP_THRESHOLD)
prev->endpts = pts;
for (int n = 0; n < priv->num_seekpoints; n++) {
if (priv->seekpoints[n].pts == prev->pts) {
priv->seekpoints[n].endpts = prev->endpts;
break;
}
}
}
// This subtitle packet only signals the end of subtitle display.
if (!sub.num_rects) {
avsubtitle_free(&sub);
return;
}
}
alloc_sub(priv);
struct sub *current = &priv->subs[0];
current->valid = true;
current->pts = pts;
current->endpts = endpts;
current->avsub = sub;
MP_TARRAY_GROW(priv, current->inbitmaps, sub.num_rects);
MP_TARRAY_GROW(priv, current->imgs, sub.num_rects);
for (int i = 0; i < sub.num_rects; i++) {
struct AVSubtitleRect *r = sub.rects[i];
struct sub_bitmap *b = ¤t->inbitmaps[current->count];
struct osd_bmp_indexed *img = ¤t->imgs[current->count];
if (r->type != SUBTITLE_BITMAP) {
MP_ERR(sd, "unsupported subtitle type from libavcodec\n");
continue;
}
if (!(r->flags & AV_SUBTITLE_FLAG_FORCED) && opts->forced_subs_only)
continue;
if (r->w <= 0 || r->h <= 0)
continue;
#if HAVE_AV_SUBTITLE_NOPICT
uint8_t **data = r->data;
int *linesize = r->linesize;
#else
uint8_t **data = r->pict.data;
int *linesize = r->pict.linesize;
#endif
img->bitmap = data[0];
assert(r->nb_colors > 0);
assert(r->nb_colors * 4 <= sizeof(img->palette));
memcpy(img->palette, data[1], r->nb_colors * 4);
b->bitmap = img;
b->stride = linesize[0];
b->w = r->w;
b->h = r->h;
b->x = r->x;
b->y = r->y;
current->count++;
}
if (pts != MP_NOPTS_VALUE) {
for (int n = 0; n < priv->num_seekpoints; n++) {
if (priv->seekpoints[n].pts == pts)
goto skip;
}
// Set arbitrary limit as safe-guard against insane files.
if (priv->num_seekpoints >= 10000)
MP_TARRAY_REMOVE_AT(priv->seekpoints, priv->num_seekpoints, 0);
MP_TARRAY_APPEND(priv, priv->seekpoints, priv->num_seekpoints,
(struct seekpoint){.pts = pts, .endpts = endpts});
skip: ;
}