diff options
Diffstat (limited to 'sub/filter_sdh.c')
| -rw-r--r-- | sub/filter_sdh.c | 61 |
1 files changed, 52 insertions, 9 deletions
diff --git a/sub/filter_sdh.c b/sub/filter_sdh.c index 72744ec20e..2b544ea222 100644 --- a/sub/filter_sdh.c +++ b/sub/filter_sdh.c @@ -15,9 +15,11 @@ * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */ -#include <stdlib.h> #include <assert.h> +#include <stdlib.h> #include <string.h> +#include <limits.h> + #include "misc/ctype.h" #include "common/common.h" #include "common/msg.h" @@ -43,7 +45,7 @@ static void init_buf(struct buffer *buf, int length) buf->length = length; } -static inline int append(struct sd *sd, struct buffer *buf, char c) +static inline int append(struct sd_filter *sd, struct buffer *buf, char c) { if (buf->pos >= 0 && buf->pos < buf->length) { buf->string[buf->pos++] = c; @@ -66,7 +68,7 @@ static inline int append(struct sd *sd, struct buffer *buf, char c) // // on return the read pointer is updated to the position after // the tags. -static void copy_ass(struct sd *sd, char **rpp, struct buffer *buf) +static void copy_ass(struct sd_filter *sd, char **rpp, struct buffer *buf) { char *rp = *rpp; @@ -83,7 +85,7 @@ static void copy_ass(struct sd *sd, char **rpp, struct buffer *buf) return; } -static bool skip_bracketed(struct sd *sd, char **rpp, struct buffer *buf); +static bool skip_bracketed(struct sd_filter *sd, char **rpp, struct buffer *buf); // check for speaker label, like MAN: // normal subtitles may include mixed case text with : after so @@ -101,7 +103,7 @@ static bool skip_bracketed(struct sd *sd, char **rpp, struct buffer *buf); // if no label was found read pointer and write position in buffer // will be unchanged // otherwise they point to next position after label and next write position -static void skip_speaker_label(struct sd *sd, char **rpp, struct buffer *buf) +static void skip_speaker_label(struct sd_filter *sd, char **rpp, struct buffer *buf) { int filter_harder = sd->opts->sub_filter_SDH_harder; char *rp = *rpp; @@ -187,7 +189,7 @@ static void skip_speaker_label(struct sd *sd, char **rpp, struct buffer *buf) // return true if bracketed text was removed. // if not valid SDH read pointer and write buffer position will be unchanged // otherwise they point to next position after text and next write position -static bool skip_bracketed(struct sd *sd, char **rpp, struct buffer *buf) +static bool skip_bracketed(struct sd_filter *sd, char **rpp, struct buffer *buf) { char *rp = *rpp; int old_pos = buf->pos; @@ -235,7 +237,7 @@ static bool skip_bracketed(struct sd *sd, char **rpp, struct buffer *buf) // return true if paranthesed text was removed. // if not valid SDH read pointer and write buffer position will be unchanged // otherwise they point to next position after text and next write position -static bool skip_parenthesed(struct sd *sd, char **rpp, struct buffer *buf) +static bool skip_parenthesed(struct sd_filter *sd, char **rpp, struct buffer *buf) { int filter_harder = sd->opts->sub_filter_SDH_harder; char *rp = *rpp; @@ -289,7 +291,8 @@ static bool skip_parenthesed(struct sd *sd, char **rpp, struct buffer *buf) // // when removing characters the following are moved back // -static void remove_leading_hyphen_space(struct sd *sd, int start_pos, struct buffer *buf) +static void remove_leading_hyphen_space(struct sd_filter *sd, int start_pos, + struct buffer *buf) { int old_pos = buf->pos; if (start_pos < 0 || start_pos >= old_pos) @@ -340,7 +343,8 @@ static void remove_leading_hyphen_space(struct sd *sd, int start_pos, struct buf // // Returns NULL if filtering resulted in all of ASS data being removed so no // subtitle should be output -char *filter_SDH(struct sd *sd, char *format, int n_ignored, char *data, int length) +static char *filter_SDH(struct sd_filter *sd, char *format, int n_ignored, + char *data, int length) { if (!format) { MP_VERBOSE(sd, "SDH filtering not possible - format missing\n"); @@ -462,3 +466,42 @@ char *filter_SDH(struct sd *sd, char *format, int n_ignored, char *data, int len return NULL; } } + +static bool sdh_init(struct sd_filter *ft) +{ + if (strcmp(ft->codec, "ass") != 0) + return false; + + if (!ft->opts->sub_filter_SDH) + return false; + + return true; +} + +static struct demux_packet *sdh_filter(struct sd_filter *ft, + struct demux_packet *pkt) +{ + char *line = (char *)pkt->buffer; + size_t len = pkt->len; + if (len >= INT_MAX) + return NULL; + + line = filter_SDH(ft, ft->event_format, 1, line, len); + if (!line) + return NULL; + + // Stupidly, this copies it again. One could possibly allocate the packet + // for writing in the first place (new_demux_packet()) and use + // demux_packet_shorten(). Or not allocate anything on no change. + struct demux_packet *npkt = new_demux_packet_from(line, strlen(line)); + if (npkt) + demux_packet_copy_attribs(npkt, pkt); + + talloc_free(line); + return npkt; +} + +const struct sd_filter_functions sd_filter_sdh = { + .init = sdh_init, + .filter = sdh_filter, +}; |