diff --git a/libavcodec/ccaption_dec.c b/libavcodec/ccaption_dec.c index e05468fcc6..1f2dfe6740 100644 --- a/libavcodec/ccaption_dec.c +++ b/libavcodec/ccaption_dec.c @@ -27,9 +27,9 @@ #define SCREEN_ROWS 15 #define SCREEN_COLUMNS 32 -#define SET_FLAG(var, val) ( var |= ( 1 << (val) ) ) -#define UNSET_FLAG(var, val) ( var &= ~( 1 << (val)) ) -#define CHECK_FLAG(var, val) ( (var) & (1 << (val) ) ) +#define SET_FLAG(var, val) ( (var) |= ( 1 << (val)) ) +#define UNSET_FLAG(var, val) ( (var) &= ~( 1 << (val)) ) +#define CHECK_FLAG(var, val) ( (var) & ( 1 << (val)) ) /* * TODO list @@ -44,8 +44,7 @@ enum cc_mode { CCMODE_TEXT, }; -enum cc_color_code -{ +enum cc_color_code { CCCOL_WHITE, CCCOL_GREEN, CCCOL_BLUE, @@ -58,8 +57,7 @@ enum cc_color_code CCCOL_TRANSPARENT, }; -enum cc_font -{ +enum cc_font { CCFONT_REGULAR, CCFONT_ITALICS, CCFONT_UNDERLINED, @@ -68,40 +66,41 @@ enum cc_font static const unsigned char pac2_attribs[][3] = // Color, font, ident { - { CCCOL_WHITE, CCFONT_REGULAR, 0 }, // 0x40 || 0x60 - { CCCOL_WHITE, CCFONT_UNDERLINED, 0 }, // 0x41 || 0x61 - { CCCOL_GREEN, CCFONT_REGULAR, 0 }, // 0x42 || 0x62 - { CCCOL_GREEN, CCFONT_UNDERLINED, 0 }, // 0x43 || 0x63 - { CCCOL_BLUE, CCFONT_REGULAR, 0 }, // 0x44 || 0x64 - { CCCOL_BLUE, CCFONT_UNDERLINED, 0 }, // 0x45 || 0x65 - { CCCOL_CYAN, CCFONT_REGULAR, 0 }, // 0x46 || 0x66 - { CCCOL_CYAN, CCFONT_UNDERLINED, 0 }, // 0x47 || 0x67 - { CCCOL_RED, CCFONT_REGULAR, 0 }, // 0x48 || 0x68 - { CCCOL_RED, CCFONT_UNDERLINED, 0 }, // 0x49 || 0x69 - { CCCOL_YELLOW, CCFONT_REGULAR, 0 }, // 0x4a || 0x6a - { CCCOL_YELLOW, CCFONT_UNDERLINED, 0 }, // 0x4b || 0x6b - { CCCOL_MAGENTA, CCFONT_REGULAR, 0 }, // 0x4c || 0x6c - { CCCOL_MAGENTA, CCFONT_UNDERLINED, 0 }, // 0x4d || 0x6d - { CCCOL_WHITE, CCFONT_ITALICS, 0 }, // 0x4e || 0x6e - { CCCOL_WHITE, CCFONT_UNDERLINED_ITALICS, 0 }, // 0x4f || 0x6f - { CCCOL_WHITE, CCFONT_REGULAR, 0 }, // 0x50 || 0x70 - { CCCOL_WHITE, CCFONT_UNDERLINED, 0 }, // 0x51 || 0x71 - { CCCOL_WHITE, CCFONT_REGULAR, 4 }, // 0x52 || 0x72 - { CCCOL_WHITE, CCFONT_UNDERLINED, 4 }, // 0x53 || 0x73 - { CCCOL_WHITE, CCFONT_REGULAR, 8 }, // 0x54 || 0x74 - { CCCOL_WHITE, CCFONT_UNDERLINED, 8 }, // 0x55 || 0x75 - { CCCOL_WHITE, CCFONT_REGULAR, 12 }, // 0x56 || 0x76 - { CCCOL_WHITE, CCFONT_UNDERLINED, 12 }, // 0x57 || 0x77 - { CCCOL_WHITE, CCFONT_REGULAR, 16 }, // 0x58 || 0x78 - { CCCOL_WHITE, CCFONT_UNDERLINED, 16 }, // 0x59 || 0x79 - { CCCOL_WHITE, CCFONT_REGULAR, 20 }, // 0x5a || 0x7a - { CCCOL_WHITE, CCFONT_UNDERLINED, 20 }, // 0x5b || 0x7b - { CCCOL_WHITE, CCFONT_REGULAR, 24 }, // 0x5c || 0x7c - { CCCOL_WHITE, CCFONT_UNDERLINED, 24 }, // 0x5d || 0x7d - { CCCOL_WHITE, CCFONT_REGULAR, 28 }, // 0x5e || 0x7e - { CCCOL_WHITE, CCFONT_UNDERLINED, 28 } // 0x5f || 0x7f + { CCCOL_WHITE, CCFONT_REGULAR, 0 }, // 0x40 || 0x60 + { CCCOL_WHITE, CCFONT_UNDERLINED, 0 }, // 0x41 || 0x61 + { CCCOL_GREEN, CCFONT_REGULAR, 0 }, // 0x42 || 0x62 + { CCCOL_GREEN, CCFONT_UNDERLINED, 0 }, // 0x43 || 0x63 + { CCCOL_BLUE, CCFONT_REGULAR, 0 }, // 0x44 || 0x64 + { CCCOL_BLUE, CCFONT_UNDERLINED, 0 }, // 0x45 || 0x65 + { CCCOL_CYAN, CCFONT_REGULAR, 0 }, // 0x46 || 0x66 + { CCCOL_CYAN, CCFONT_UNDERLINED, 0 }, // 0x47 || 0x67 + { CCCOL_RED, CCFONT_REGULAR, 0 }, // 0x48 || 0x68 + { CCCOL_RED, CCFONT_UNDERLINED, 0 }, // 0x49 || 0x69 + { CCCOL_YELLOW, CCFONT_REGULAR, 0 }, // 0x4a || 0x6a + { CCCOL_YELLOW, CCFONT_UNDERLINED, 0 }, // 0x4b || 0x6b + { CCCOL_MAGENTA, CCFONT_REGULAR, 0 }, // 0x4c || 0x6c + { CCCOL_MAGENTA, CCFONT_UNDERLINED, 0 }, // 0x4d || 0x6d + { CCCOL_WHITE, CCFONT_ITALICS, 0 }, // 0x4e || 0x6e + { CCCOL_WHITE, CCFONT_UNDERLINED_ITALICS, 0 }, // 0x4f || 0x6f + { CCCOL_WHITE, CCFONT_REGULAR, 0 }, // 0x50 || 0x70 + { CCCOL_WHITE, CCFONT_UNDERLINED, 0 }, // 0x51 || 0x71 + { CCCOL_WHITE, CCFONT_REGULAR, 4 }, // 0x52 || 0x72 + { CCCOL_WHITE, CCFONT_UNDERLINED, 4 }, // 0x53 || 0x73 + { CCCOL_WHITE, CCFONT_REGULAR, 8 }, // 0x54 || 0x74 + { CCCOL_WHITE, CCFONT_UNDERLINED, 8 }, // 0x55 || 0x75 + { CCCOL_WHITE, CCFONT_REGULAR, 12 }, // 0x56 || 0x76 + { CCCOL_WHITE, CCFONT_UNDERLINED, 12 }, // 0x57 || 0x77 + { CCCOL_WHITE, CCFONT_REGULAR, 16 }, // 0x58 || 0x78 + { CCCOL_WHITE, CCFONT_UNDERLINED, 16 }, // 0x59 || 0x79 + { CCCOL_WHITE, CCFONT_REGULAR, 20 }, // 0x5a || 0x7a + { CCCOL_WHITE, CCFONT_UNDERLINED, 20 }, // 0x5b || 0x7b + { CCCOL_WHITE, CCFONT_REGULAR, 24 }, // 0x5c || 0x7c + { CCCOL_WHITE, CCFONT_UNDERLINED, 24 }, // 0x5d || 0x7d + { CCCOL_WHITE, CCFONT_REGULAR, 28 }, // 0x5e || 0x7e + { CCCOL_WHITE, CCFONT_UNDERLINED, 28 } // 0x5f || 0x7f /* total 32 entries */ }; + /* 0-255 needs 256 spaces */ static const uint8_t parity_table[256] = { 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, @@ -135,6 +134,7 @@ static const uint8_t parity_table[256] = { 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0 }; + struct Screen { /* +1 is used to compensate null character of string */ uint8_t characters[SCREEN_ROWS][SCREEN_COLUMNS+1]; @@ -197,6 +197,7 @@ static av_cold int close_decoder(AVCodecContext *avctx) av_buffer_unref(&ctx->pktbuf); return 0; } + /** * @param ctx closed caption context just to print log */ @@ -216,6 +217,7 @@ static int write_char (CCaptionSubContext *ctx, char *row,uint8_t col, char ch) return AVERROR_INVALIDDATA; } } + /** * This function after validating parity bit, also remove it from data pair. * The first byte doesn't pass parity, we replace it with a solid blank @@ -295,6 +297,7 @@ static void handle_textattr( CCaptionSubContext *ctx, uint8_t hi, uint8_t lo ) if(ret == 0) ctx->cursor_column++; } + static void handle_pac( CCaptionSubContext *ctx, uint8_t hi, uint8_t lo ) { static const int8_t row_map[] = { @@ -357,6 +360,7 @@ static int handle_edm(CCaptionSubContext *ctx,int64_t pts) ctx->end_time = pts; return ret; } + static int handle_eoc(CCaptionSubContext *ctx, int64_t pts) { int ret; @@ -365,6 +369,7 @@ static int handle_eoc(CCaptionSubContext *ctx, int64_t pts) ctx->cursor_column = 0; return ret; } + static void handle_delete_end_of_row( CCaptionSubContext *ctx, char hi, char lo) { struct Screen *screen = get_writing_screen(ctx); @@ -372,6 +377,7 @@ static void handle_delete_end_of_row( CCaptionSubContext *ctx, char hi, char lo) write_char(ctx, row, ctx->cursor_column, 0); } + static void handle_char(CCaptionSubContext *ctx, char hi, char lo, int64_t pts) { struct Screen *screen = get_writing_screen(ctx); @@ -398,6 +404,7 @@ static void handle_char(CCaptionSubContext *ctx, char hi, char lo, int64_t pts) av_log(ctx, AV_LOG_DEBUG,"(%c,%c)\n",hi,lo); #endif } + static int process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint8_t lo) { int ret = 0; @@ -457,6 +464,7 @@ static int process_cc608(CCaptionSubContext *ctx, int64_t pts, uint8_t hi, uint8 return ret; } + static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avpkt) { CCaptionSubContext *ctx = avctx->priv_data; @@ -506,9 +514,11 @@ static int decode(AVCodecContext *avctx, void *data, int *got_sub, AVPacket *avp *got_sub = sub->num_rects > 0; return ret; } + static const AVOption options[] = { {NULL} }; + static const AVClass ccaption_dec_class = { .class_name = "Closed caption Decoder", .item_name = av_default_item_name,