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early-access version 1680

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This commit is contained in:
pineappleEA
2021-05-13 11:45:27 +02:00
parent 1434d96e7d
commit 66ed389c6f
311 changed files with 6452 additions and 2597 deletions
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294
externals/ffmpeg/libavcodec/ccaption_dec.c vendored
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@@ -32,10 +32,6 @@
static const AVRational ms_tb = {1, 1000};
/*
* TODO list
* 1) handle font and color completely
*/
enum cc_mode {
CCMODE_POPON,
CCMODE_PAINTON,
@@ -173,6 +169,18 @@ static const char *charset_overrides[4][128] =
},
};
static const unsigned char bg_attribs[8] = // Color
{
CCCOL_WHITE,
CCCOL_GREEN,
CCCOL_BLUE,
CCCOL_CYAN,
CCCOL_RED,
CCCOL_YELLOW,
CCCOL_MAGENTA,
CCCOL_BLACK,
};
static const unsigned char pac2_attribs[32][3] = // Color, font, ident
{
{ CCCOL_WHITE, CCFONT_REGULAR, 0 }, // 0x40 || 0x60
@@ -215,6 +223,7 @@ struct Screen {
uint8_t characters[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
uint8_t charsets[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
uint8_t colors[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
uint8_t bgs[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
uint8_t fonts[SCREEN_ROWS+1][SCREEN_COLUMNS+1];
/*
* Bitmask of used rows; if a bit is not set, the
@@ -228,39 +237,37 @@ struct Screen {
typedef struct CCaptionSubContext {
AVClass *class;
int real_time;
int data_field;
struct Screen screen[2];
int active_screen;
uint8_t cursor_row;
uint8_t cursor_column;
uint8_t cursor_color;
uint8_t bg_color;
uint8_t cursor_font;
uint8_t cursor_charset;
AVBPrint buffer;
AVBPrint buffer[2];
int buffer_index;
int buffer_changed;
int rollup;
enum cc_mode mode;
int64_t start_time;
/* visible screen time */
int64_t startv_time;
int64_t end_time;
int64_t buffer_time[2];
int screen_touched;
int64_t last_real_time;
char prev_cmd[2];
/* buffer to store pkt data */
uint8_t *pktbuf;
int pktbuf_size;
uint8_t prev_cmd[2];
int readorder;
} CCaptionSubContext;
static av_cold int init_decoder(AVCodecContext *avctx)
{
int ret;
CCaptionSubContext *ctx = avctx->priv_data;
av_bprint_init(&ctx->buffer, 0, AV_BPRINT_SIZE_UNLIMITED);
av_bprint_init(&ctx->buffer[0], 0, AV_BPRINT_SIZE_UNLIMITED);
av_bprint_init(&ctx->buffer[1], 0, AV_BPRINT_SIZE_UNLIMITED);
/* taking by default roll up to 2 */
ctx->mode = CCMODE_ROLLUP;
ctx->bg_color = CCCOL_BLACK;
ctx->rollup = 2;
ctx->cursor_row = 10;
ret = ff_ass_subtitle_header(avctx, "Monospace",
@@ -282,9 +289,8 @@ static av_cold int init_decoder(AVCodecContext *avctx)
static av_cold int close_decoder(AVCodecContext *avctx)
{
CCaptionSubContext *ctx = avctx->priv_data;
av_bprint_finalize(&ctx->buffer, NULL);
av_freep(&ctx->pktbuf);
ctx->pktbuf_size = 0;
av_bprint_finalize(&ctx->buffer[0], NULL);
av_bprint_finalize(&ctx->buffer[1], NULL);
return 0;
}
@@ -301,6 +307,7 @@ static void flush_decoder(AVCodecContext *avctx)
ctx->cursor_column = 0;
ctx->cursor_font = 0;
ctx->cursor_color = 0;
ctx->bg_color = CCCOL_BLACK;
ctx->cursor_charset = 0;
ctx->active_screen = 0;
ctx->last_real_time = 0;
@@ -308,7 +315,8 @@ static void flush_decoder(AVCodecContext *avctx)
ctx->buffer_changed = 0;
if (!(avctx->flags2 & AV_CODEC_FLAG2_RO_FLUSH_NOOP))
ctx->readorder = 0;
av_bprint_clear(&ctx->buffer);
av_bprint_clear(&ctx->buffer[0]);
av_bprint_clear(&ctx->buffer[1]);
}
/**
@@ -319,11 +327,15 @@ static void write_char(CCaptionSubContext *ctx, struct Screen *screen, char ch)
uint8_t col = ctx->cursor_column;
char *row = screen->characters[ctx->cursor_row];
char *font = screen->fonts[ctx->cursor_row];
char *color = screen->colors[ctx->cursor_row];
char *bg = screen->bgs[ctx->cursor_row];
char *charset = screen->charsets[ctx->cursor_row];
if (col < SCREEN_COLUMNS) {
row[col] = ch;
font[col] = ctx->cursor_font;
color[col] = ctx->cursor_color;
bg[col] = ctx->bg_color;
charset[col] = ctx->cursor_charset;
ctx->cursor_charset = CCSET_BASIC_AMERICAN;
if (ch) ctx->cursor_column++;
@@ -347,11 +359,13 @@ static void write_char(CCaptionSubContext *ctx, struct Screen *screen, char ch)
* If the second byte doesn't pass parity, it returns INVALIDDATA
* user can ignore the whole pair and pass the other pair.
*/
static int validate_cc_data_pair(uint8_t *cc_data_pair)
static int validate_cc_data_pair(const uint8_t *cc_data_pair, uint8_t *hi)
{
uint8_t cc_valid = (*cc_data_pair & 4) >>2;
uint8_t cc_type = *cc_data_pair & 3;
*hi = cc_data_pair[1];
if (!cc_valid)
return AVERROR_INVALIDDATA;
@@ -361,7 +375,7 @@ static int validate_cc_data_pair(uint8_t *cc_data_pair)
return AVERROR_INVALIDDATA;
}
if (!av_parity(cc_data_pair[1])) {
cc_data_pair[1]=0x7F;
*hi = 0x7F;
}
}
@@ -374,10 +388,6 @@ static int validate_cc_data_pair(uint8_t *cc_data_pair)
if (cc_type == 3 || cc_type == 2)
return AVERROR_PATCHWELCOME;
/* remove parity bit */
cc_data_pair[1] &= 0x7F;
cc_data_pair[2] &= 0x7F;
return 0;
}
@@ -423,6 +433,7 @@ static void roll_up(CCaptionSubContext *ctx)
memcpy(screen->characters[i_row], screen->characters[i_row+1], SCREEN_COLUMNS);
memcpy(screen->colors[i_row], screen->colors[i_row+1], SCREEN_COLUMNS);
memcpy(screen->bgs[i_row], screen->bgs[i_row+1], SCREEN_COLUMNS);
memcpy(screen->fonts[i_row], screen->fonts[i_row+1], SCREEN_COLUMNS);
memcpy(screen->charsets[i_row], screen->charsets[i_row+1], SCREEN_COLUMNS);
if (CHECK_FLAG(screen->row_used, i_row + 1))
@@ -437,7 +448,11 @@ static int capture_screen(CCaptionSubContext *ctx)
int i, j, tab = 0;
struct Screen *screen = ctx->screen + ctx->active_screen;
enum cc_font prev_font = CCFONT_REGULAR;
av_bprint_clear(&ctx->buffer);
enum cc_color_code prev_color = CCCOL_WHITE;
enum cc_color_code prev_bg_color = CCCOL_BLACK;
const int bidx = ctx->buffer_index;
av_bprint_clear(&ctx->buffer[bidx]);
for (i = 0; screen->row_used && i < SCREEN_ROWS; i++)
{
@@ -457,6 +472,8 @@ static int capture_screen(CCaptionSubContext *ctx)
if (CHECK_FLAG(screen->row_used, i)) {
const char *row = screen->characters[i];
const char *font = screen->fonts[i];
const char *bg = screen->bgs[i];
const char *color = screen->colors[i];
const char *charset = screen->charsets[i];
const char *override;
int x, y, seen_char = 0;
@@ -468,10 +485,10 @@ static int capture_screen(CCaptionSubContext *ctx)
x = ASS_DEFAULT_PLAYRESX * (0.1 + 0.0250 * j);
y = ASS_DEFAULT_PLAYRESY * (0.1 + 0.0533 * i);
av_bprintf(&ctx->buffer, "{\\an7}{\\pos(%d,%d)}", x, y);
av_bprintf(&ctx->buffer[bidx], "{\\an7}{\\pos(%d,%d)}", x, y);
for (; j < SCREEN_COLUMNS; j++) {
const char *e_tag = "", *s_tag = "";
const char *e_tag = "", *s_tag = "", *c_tag = "", *b_tag = "";
if (row[j] == 0)
break;
@@ -500,38 +517,99 @@ static int capture_screen(CCaptionSubContext *ctx)
break;
}
}
if (prev_color != color[j]) {
switch (color[j]) {
case CCCOL_WHITE:
c_tag = "{\\c&HFFFFFF&}";
break;
case CCCOL_GREEN:
c_tag = "{\\c&H00FF00&}";
break;
case CCCOL_BLUE:
c_tag = "{\\c&HFF0000&}";
break;
case CCCOL_CYAN:
c_tag = "{\\c&HFFFF00&}";
break;
case CCCOL_RED:
c_tag = "{\\c&H0000FF&}";
break;
case CCCOL_YELLOW:
c_tag = "{\\c&H00FFFF&}";
break;
case CCCOL_MAGENTA:
c_tag = "{\\c&HFF00FF&}";
break;
}
}
if (prev_bg_color != bg[j]) {
switch (bg[j]) {
case CCCOL_WHITE:
b_tag = "{\\3c&HFFFFFF&}";
break;
case CCCOL_GREEN:
b_tag = "{\\3c&H00FF00&}";
break;
case CCCOL_BLUE:
b_tag = "{\\3c&HFF0000&}";
break;
case CCCOL_CYAN:
b_tag = "{\\3c&HFFFF00&}";
break;
case CCCOL_RED:
b_tag = "{\\3c&H0000FF&}";
break;
case CCCOL_YELLOW:
b_tag = "{\\3c&H00FFFF&}";
break;
case CCCOL_MAGENTA:
b_tag = "{\\3c&HFF00FF&}";
break;
case CCCOL_BLACK:
b_tag = "{\\3c&H000000&}";
break;
}
}
prev_font = font[j];
prev_color = color[j];
prev_bg_color = bg[j];
override = charset_overrides[(int)charset[j]][(int)row[j]];
if (override) {
av_bprintf(&ctx->buffer, "%s%s%s", e_tag, s_tag, override);
av_bprintf(&ctx->buffer[bidx], "%s%s%s%s%s", e_tag, s_tag, c_tag, b_tag, override);
seen_char = 1;
} else if (row[j] == ' ' && !seen_char) {
av_bprintf(&ctx->buffer, "%s%s\\h", e_tag, s_tag);
av_bprintf(&ctx->buffer[bidx], "%s%s%s%s\\h", e_tag, s_tag, c_tag, b_tag);
} else {
av_bprintf(&ctx->buffer, "%s%s%c", e_tag, s_tag, row[j]);
av_bprintf(&ctx->buffer[bidx], "%s%s%s%s%c", e_tag, s_tag, c_tag, b_tag, row[j]);
seen_char = 1;
}
}
av_bprintf(&ctx->buffer, "\\N");
av_bprintf(&ctx->buffer[bidx], "\\N");
}
}
if (!av_bprint_is_complete(&ctx->buffer))
if (!av_bprint_is_complete(&ctx->buffer[bidx]))
return AVERROR(ENOMEM);
if (screen->row_used && ctx->buffer.len >= 2) {
ctx->buffer.len -= 2;
ctx->buffer.str[ctx->buffer.len] = 0;
if (screen->row_used && ctx->buffer[bidx].len >= 2) {
ctx->buffer[bidx].len -= 2;
ctx->buffer[bidx].str[ctx->buffer[bidx].len] = 0;
}
ctx->buffer_changed = 1;
return 0;
}
static int reap_screen(CCaptionSubContext *ctx, int64_t pts)
static void update_time(CCaptionSubContext *ctx, int64_t pts)
{
ctx->start_time = ctx->startv_time;
ctx->startv_time = pts;
ctx->end_time = pts;
return capture_screen(ctx);
ctx->buffer_time[0] = ctx->buffer_time[1];
ctx->buffer_time[1] = pts;
}
static void handle_bgattr(CCaptionSubContext *ctx, uint8_t hi, uint8_t lo)
{
const int i = (lo & 0xf) >> 1;
ctx->bg_color = bg_attribs[i];
}
static void handle_textattr(CCaptionSubContext *ctx, uint8_t hi, uint8_t lo)
@@ -576,49 +654,55 @@ static void handle_pac(CCaptionSubContext *ctx, uint8_t hi, uint8_t lo)
}
}
/**
* @param pts it is required to set end time
*/
static void handle_edm(CCaptionSubContext *ctx, int64_t pts)
static int handle_edm(CCaptionSubContext *ctx)
{
struct Screen *screen = ctx->screen + ctx->active_screen;
int ret;
// In buffered mode, keep writing to screen until it is wiped.
// Before wiping the display, capture contents to emit subtitle.
if (!ctx->real_time)
reap_screen(ctx, pts);
ret = capture_screen(ctx);
screen->row_used = 0;
ctx->bg_color = CCCOL_BLACK;
// In realtime mode, emit an empty caption so the last one doesn't
// stay on the screen.
if (ctx->real_time)
reap_screen(ctx, pts);
ret = capture_screen(ctx);
return ret;
}
static void handle_eoc(CCaptionSubContext *ctx, int64_t pts)
static int handle_eoc(CCaptionSubContext *ctx)
{
// In buffered mode, we wait til the *next* EOC and
// reap what was already on the screen since the last EOC.
if (!ctx->real_time)
handle_edm(ctx,pts);
int ret;
ctx->active_screen = !ctx->active_screen;
// In buffered mode, we wait til the *next* EOC and
// capture what was already on the screen since the last EOC.
if (!ctx->real_time)
ret = handle_edm(ctx);
ctx->cursor_column = 0;
// In realtime mode, we display the buffered contents (after
// flipping the buffer to active above) as soon as EOC arrives.
if (ctx->real_time)
reap_screen(ctx, pts);
ret = capture_screen(ctx);
return ret;
}
static void handle_delete_end_of_row(CCaptionSubContext *ctx, char hi, char lo)
static void handle_delete_end_of_row(CCaptionSubContext *ctx)
{
struct Screen *screen = get_writing_screen(ctx);
write_char(ctx, screen, 0);
}
static void handle_char(CCaptionSubContext *ctx, char hi, char lo, int64_t pts)
static void handle_char(CCaptionSubContext *ctx, char hi, char lo)
{
struct Screen *screen = get_writing_screen(ctx);
@@ -658,11 +742,12 @@ static void handle_char(CCaptionSubContext *ctx, char hi, char lo, int64_t pts)
ff_dlog(ctx, "(%c)\n", hi);
}
static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint8_t lo)
static int process_cc608(CCaptionSubContext *ctx, uint8_t hi, uint8_t lo)
{
int ret = 0;
if (hi == ctx->prev_cmd[0] && lo == ctx->prev_cmd[1]) {
/* ignore redundant command */
return;
return 0;
}
/* set prev command */
@@ -675,6 +760,8 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
} else if ( ( hi == 0x11 && lo >= 0x20 && lo <= 0x2f ) ||
( hi == 0x17 && lo >= 0x2e && lo <= 0x2f) ) {
handle_textattr(ctx, hi, lo);
} else if ((hi == 0x10 && lo >= 0x20 && lo <= 0x2f)) {
handle_bgattr(ctx, hi, lo);
} else if (hi == 0x14 || hi == 0x15 || hi == 0x1c) {
switch (lo) {
case 0x20:
@@ -682,7 +769,7 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
ctx->mode = CCMODE_POPON;
break;
case 0x24:
handle_delete_end_of_row(ctx, hi, lo);
handle_delete_end_of_row(ctx);
break;
case 0x25:
case 0x26:
@@ -700,13 +787,13 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
break;
case 0x2c:
/* erase display memory */
handle_edm(ctx, pts);
handle_edm(ctx);
break;
case 0x2d:
/* carriage return */
ff_dlog(ctx, "carriage return\n");
if (!ctx->real_time)
reap_screen(ctx, pts);
ret = capture_screen(ctx);
roll_up(ctx);
ctx->cursor_column = 0;
break;
@@ -722,7 +809,7 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
case 0x2f:
/* end of caption */
ff_dlog(ctx, "handle_eoc\n");
handle_eoc(ctx, pts);
ret = handle_eoc(ctx);
break;
default:
ff_dlog(ctx, "Unknown command 0x%hhx 0x%hhx\n", hi, lo);
@@ -730,73 +817,93 @@ static void process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint
}
} else if (hi >= 0x11 && hi <= 0x13) {
/* Special characters */
handle_char(ctx, hi, lo, pts);
handle_char(ctx, hi, lo);
} else if (hi >= 0x20) {
/* Standard characters (always in pairs) */
handle_char(ctx, hi, lo, pts);
handle_char(ctx, hi, lo);
ctx->prev_cmd[0] = ctx->prev_cmd[1] = 0;
} else if (hi == 0x17 && lo >= 0x21 && lo <= 0x23) {
int i;
/* Tab offsets (spacing) */
for (i = 0; i < lo - 0x20; i++) {
handle_char(ctx, ' ', 0, pts);
handle_char(ctx, ' ', 0);
}
} else {
/* Ignoring all other non data code */
ff_dlog(ctx, "Unknown command 0x%hhx 0x%hhx\n", hi, lo);
}
return ret;
}
static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt)
{
CCaptionSubContext *ctx = avctx->priv_data;
AVSubtitle *sub = data;
const int64_t start_time = sub->pts;
uint8_t *bptr = NULL;
int64_t in_time = sub->pts;
int64_t start_time;
int64_t end_time;
int bidx = ctx->buffer_index;
const uint8_t *bptr = avpkt->data;
int len = avpkt->size;
int ret = 0;
int i;
av_fast_padded_malloc(&ctx->pktbuf, &ctx->pktbuf_size, len);
if (!ctx->pktbuf) {
av_log(ctx, AV_LOG_WARNING, "Insufficient Memory of %d truncated to %d\n", len, ctx->pktbuf_size);
return AVERROR(ENOMEM);
}
memcpy(ctx->pktbuf, avpkt->data, len);
bptr = ctx->pktbuf;
for (i = 0; i < len; i += 3) {
uint8_t hi, cc_type = bptr[i] & 1;
for (i = 0; i < len; i += 3) {
uint8_t cc_type = *(bptr + i) & 3;
if (validate_cc_data_pair(bptr + i))
if (ctx->data_field < 0)
ctx->data_field = cc_type;
if (validate_cc_data_pair(bptr + i, &hi))
continue;
/* ignoring data field 1 */
if(cc_type == 1)
if (cc_type != ctx->data_field)
continue;
else
process_cc608(ctx, start_time, *(bptr + i + 1) & 0x7f, *(bptr + i + 2) & 0x7f);
ret = process_cc608(ctx, hi & 0x7f, bptr[i + 2] & 0x7f);
if (ret < 0)
return ret;
if (!ctx->buffer_changed)
continue;
ctx->buffer_changed = 0;
if (*ctx->buffer.str || ctx->real_time)
{
ff_dlog(ctx, "cdp writing data (%s)\n",ctx->buffer.str);
ret = ff_ass_add_rect(sub, ctx->buffer.str, ctx->readorder++, 0, NULL, NULL);
if (ret < 0)
return ret;
sub->pts = ctx->start_time;
if (!ctx->real_time && ctx->mode == CCMODE_POPON)
ctx->buffer_index = bidx = !ctx->buffer_index;
update_time(ctx, in_time);
if (ctx->buffer[bidx].str[0] || ctx->real_time) {
ff_dlog(ctx, "cdp writing data (%s)\n", ctx->buffer[bidx].str);
start_time = ctx->buffer_time[0];
sub->pts = start_time;
end_time = ctx->buffer_time[1];
if (!ctx->real_time)
sub->end_display_time = av_rescale_q(ctx->end_time - ctx->start_time,
sub->end_display_time = av_rescale_q(end_time - start_time,
AV_TIME_BASE_Q, ms_tb);
else
sub->end_display_time = -1;
ctx->buffer_changed = 0;
ret = ff_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL);
if (ret < 0)
return ret;
ctx->last_real_time = sub->pts;
ctx->screen_touched = 0;
}
}
if (!bptr && !ctx->real_time && ctx->buffer[!ctx->buffer_index].str[0]) {
bidx = !ctx->buffer_index;
ret = ff_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL);
if (ret < 0)
return ret;
sub->pts = ctx->buffer_time[1];
sub->end_display_time = av_rescale_q(ctx->buffer_time[1] - ctx->buffer_time[0],
AV_TIME_BASE_Q, ms_tb);
if (sub->end_display_time == 0)
sub->end_display_time = ctx->buffer[bidx].len * 20;
}
if (ctx->real_time && ctx->screen_touched &&
sub->pts > ctx->last_real_time + av_rescale_q(200, ms_tb, AV_TIME_BASE_Q)) {
ctx->last_real_time = sub->pts;
@@ -805,7 +912,7 @@ static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avp
capture_screen(ctx);
ctx->buffer_changed = 0;
ret = ff_ass_add_rect(sub, ctx->buffer.str, ctx->readorder++, 0, NULL, NULL);
ret = ff_ass_add_rect(sub, ctx->buffer[bidx].str, ctx->readorder++, 0, NULL, NULL);
if (ret < 0)
return ret;
sub->end_display_time = -1;
@@ -819,6 +926,10 @@ static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avp
#define SD AV_OPT_FLAG_SUBTITLE_PARAM | AV_OPT_FLAG_DECODING_PARAM
static const AVOption options[] = {
{ "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 },
{ "data_field", "select data field", OFFSET(data_field), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, 1, SD, "data_field" },
{ "auto", "pick first one that appears", 0, AV_OPT_TYPE_CONST, { .i64 =-1 }, 0, 0, SD, "data_field" },
{ "first", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 0 }, 0, 0, SD, "data_field" },
{ "second", NULL, 0, AV_OPT_TYPE_CONST, { .i64 = 1 }, 0, 0, SD, "data_field" },
{NULL}
};
@@ -840,4 +951,5 @@ AVCodec ff_ccaption_decoder = {
.flush = flush_decoder,
.decode = decode,
.priv_class = &ccaption_dec_class,
.capabilities = AV_CODEC_CAP_DELAY,
};