26 #define SCREEN_ROWS 15 27 #define SCREEN_COLUMNS 32 29 #define SET_FLAG(var, val) ( (var) |= ( 1 << (val)) ) 30 #define UNSET_FLAG(var, val) ( (var) &= ~( 1 << (val)) ) 31 #define CHECK_FLAG(var, val) ( (var) & ( 1 << (val)) ) 352 uint8_t cc_valid = (*cc_data_pair & 4) >>2;
353 uint8_t cc_type = *cc_data_pair & 3;
359 if (cc_type==0 || cc_type==1) {
364 cc_data_pair[1]=0x7F;
369 if ((cc_data_pair[0] == 0xFA || cc_data_pair[0] == 0xFC || cc_data_pair[0] == 0xFD)
370 && (cc_data_pair[1] & 0x7F) == 0 && (cc_data_pair[2] & 0x7F) == 0)
374 if (cc_type == 3 || cc_type == 2)
378 cc_data_pair[1] &= 0x7F;
379 cc_data_pair[2] &= 0x7F;
416 if (i > ctx->
cursor_row - keep_lines && i <= ctx->cursor_row)
421 for (i = 0; i < keep_lines && screen->
row_used; i++) {
422 const int i_row = ctx->
cursor_row - keep_lines + i + 1;
446 const char *charset = screen->
charsets[
i];
459 const char *font = screen->
fonts[
i];
460 const char *charset = screen->
charsets[
i];
461 const char *
override;
462 int x, y, seen_char = 0;
474 const char *e_tag =
"", *s_tag =
"";
479 if (prev_font != font[j]) {
488 e_tag =
"{\\u0}{\\i0}";
499 s_tag =
"{\\u1}{\\i1}";
508 }
else if (row[j] ==
' ' && !seen_char) {
554 static const int8_t row_map[] = {
555 11, -1, 1, 2, 3, 4, 12, 13, 14, 15, 5, 6, 7, 8, 9, 10
557 const int index = ( (hi<<1) & 0x0e) | ( (lo>>5) & 0x01 );
561 if (row_map[index] <= 0) {
574 for (i = 0; i < indent; i++) {
656 ff_dlog(ctx,
"(%c,%c)\n", hi, lo);
672 if ( (hi == 0x10 && (lo >= 0x40 && lo <= 0x5f)) ||
673 ( (hi >= 0x11 && hi <= 0x17) && (lo >= 0x40 && lo <= 0x7f) ) ) {
675 }
else if ( ( hi == 0x11 && lo >= 0x20 && lo <= 0x2f ) ||
676 ( hi == 0x17 && lo >= 0x2e && lo <= 0x2f) ) {
678 }
else if (hi == 0x14 || hi == 0x15 || hi == 0x1c) {
707 ff_dlog(ctx,
"carriage return\n");
728 ff_dlog(ctx,
"Unknown command 0x%hhx 0x%hhx\n", hi, lo);
731 }
else if (hi >= 0x11 && hi <= 0x13) {
734 }
else if (hi >= 0x20) {
738 }
else if (hi == 0x17 && lo >= 0x21 && lo <= 0x23) {
741 for (i = 0; i < lo - 0x20; i++) {
746 ff_dlog(ctx,
"Unknown command 0x%hhx 0x%hhx\n", hi, lo);
768 for (i = 0; i <
len; i += 3) {
776 process_cc608(ctx, start_time, *(bptr + i + 1) & 0x7f, *(bptr + i + 2) & 0x7f);
818 #define OFFSET(x) offsetof(CCaptionSubContext, x) 819 #define SD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM 821 {
"real_time",
"emit subtitle events as they are decoded for real-time display",
OFFSET(real_time),
AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1,
SD },
842 .priv_class = &ccaption_dec_class,
static void handle_edm(CCaptionSubContext *ctx, int64_t pts)
#define AVERROR_INVALIDDATA
Invalid data found when processing input.
void av_bprintf(AVBPrint *buf, const char *fmt,...)
static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint8_t lo)
static void flush(AVCodecContext *avctx)
static void handle_pac(CCaptionSubContext *ctx, uint8_t hi, uint8_t lo)
#define AV_LOG_WARNING
Something somehow does not look correct.
#define LIBAVUTIL_VERSION_INT
int ff_ass_subtitle_header(AVCodecContext *avctx, const char *font, int font_size, int color, int back_color, int bold, int italic, int underline, int border_style, int alignment)
Generate a suitable AVCodecContext.subtitle_header for SUBTITLE_ASS.
static av_cold int init(AVCodecContext *avctx)
uint8_t charsets[SCREEN_ROWS+1][SCREEN_COLUMNS+1]
const char * av_default_item_name(void *ptr)
Return the context name.
void av_fast_padded_malloc(void *ptr, unsigned int *size, size_t min_size)
Same behaviour av_fast_malloc but the buffer has additional AV_INPUT_BUFFER_PADDING_SIZE at the end w...
int ff_ass_add_rect(AVSubtitle *sub, const char *dialog, int readorder, int layer, const char *style, const char *speaker)
Add an ASS dialog to a subtitle.
static struct Screen * get_writing_screen(CCaptionSubContext *ctx)
static void handle_delete_end_of_row(CCaptionSubContext *ctx, char hi, char lo)
static void handle_char(CCaptionSubContext *ctx, char hi, char lo, int64_t pts)
int av_bprint_finalize(AVBPrint *buf, char **ret_str)
Finalize a print buffer.
#define CHECK_FLAG(var, val)
const char * class_name
The name of the class; usually it is the same name as the context structure type to which the AVClass...
static int64_t start_time
#define ASS_DEFAULT_ALIGNMENT
static void write_char(CCaptionSubContext *ctx, struct Screen *screen, char ch)
static int reap_screen(CCaptionSubContext *ctx, int64_t pts)
static void handle_eoc(CCaptionSubContext *ctx, int64_t pts)
#define AV_CODEC_FLAG2_RO_FLUSH_NOOP
Do not reset ASS ReadOrder field on flush (subtitles decoding)
#define ASS_DEFAULT_PLAYRESY
int64_t av_rescale_q(int64_t a, AVRational bq, AVRational cq)
Rescale a 64-bit integer by 2 rational numbers.
#define ASS_DEFAULT_BACK_COLOR
#define i(width, name, range_min, range_max)
#define ASS_DEFAULT_UNDERLINE
#define AV_BPRINT_SIZE_UNLIMITED
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
void av_bprint_init(AVBPrint *buf, unsigned size_init, unsigned size_max)
#define AV_LOG_DEBUG
Stuff which is only useful for libav* developers.
const char * name
Name of the codec implementation.
AVCodec ff_ccaption_decoder
#define ASS_DEFAULT_FONT_SIZE
uint32_t end_display_time
int64_t pts
Same as packet pts, in AV_TIME_BASE.
#define SET_FLAG(var, val)
static av_cold int init_decoder(AVCodecContext *avctx)
uint8_t characters[SCREEN_ROWS+1][SCREEN_COLUMNS+1]
static int capture_screen(CCaptionSubContext *ctx)
static int av_bprint_is_complete(const AVBPrint *buf)
Test if the print buffer is complete (not truncated).
#define AVERROR_PATCHWELCOME
Not yet implemented in FFmpeg, patches welcome.
uint8_t fonts[SCREEN_ROWS+1][SCREEN_COLUMNS+1]
Libavcodec external API header.
#define AV_TIME_BASE_Q
Internal time base represented as fractional value.
static const unsigned char pac2_attribs[32][3]
main external API structure.
static void flush_decoder(AVCodecContext *avctx)
Describe the class of an AVClass context structure.
Rational number (pair of numerator and denominator).
static const AVClass ccaption_dec_class
static const AVRational ms_tb
void av_bprint_clear(AVBPrint *buf)
Reset the string to "" but keep internal allocated data.
static void roll_up(CCaptionSubContext *ctx)
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
#define ASS_DEFAULT_COLOR
static const char * charset_overrides[4][128]
static const AVOption options[]
#define UNSET_FLAG(var, val)
#define ASS_DEFAULT_ITALIC
static void handle_textattr(CCaptionSubContext *ctx, uint8_t hi, uint8_t lo)
int flags2
AV_CODEC_FLAG2_*.
static const struct twinvq_data tab
static av_cold int close_decoder(AVCodecContext *avctx)
#define ASS_DEFAULT_PLAYRESX
static int validate_cc_data_pair(uint8_t *cc_data_pair)
This function after validating parity bit, also remove it from data pair.
This structure stores compressed data.
mode
Use these values in ebur128_init (or'ed).
uint8_t colors[SCREEN_ROWS+1][SCREEN_COLUMNS+1]