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🎥 Command line media player
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C
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#include <stdlib.h>#include <assert.h>#include <string.h>#include <math.h>#include <limits.h>
#include <libavutil/common.h>#include <ass/ass.h>
#include "mpv_talloc.h"
#include "options/options.h"#include "common/common.h"#include "common/msg.h"#include "demux/demux.h"#include "video/csputils.h"#include "video/mp_image.h"#include "dec_sub.h"#include "ass_mp.h"#include "sd.h"
struct sd_ass_priv { struct ass_library *ass_library; struct ass_renderer *ass_renderer; struct ass_track *ass_track; struct ass_track *shadow_track; // for --sub-ass=no rendering bool is_converted; struct lavc_conv *converter; bool on_top; struct mp_ass_packer *packer; struct sub_bitmap *bs; char last_text[500]; struct mp_image_params video_params; struct mp_image_params last_params; int64_t *seen_packets; int num_seen_packets; bool duration_unknown;};
static void mangle_colors(struct sd *sd, struct sub_bitmaps *parts);static void fill_plaintext(struct sd *sd, double pts);
// Add default styles, if the track does not have any styles yet.// Apply style overrides if the user provides any.static void mp_ass_add_default_styles(ASS_Track *track, struct mp_subtitle_opts *opts){ if (opts->ass_styles_file && opts->ass_style_override) ass_read_styles(track, opts->ass_styles_file, NULL);
if (track->n_styles == 0) { if (!track->PlayResY) { track->PlayResY = MP_ASS_FONT_PLAYRESY; track->PlayResX = track->PlayResY * 4 / 3; } track->Kerning = true; int sid = ass_alloc_style(track); track->default_style = sid; ASS_Style *style = track->styles + sid; style->Name = strdup("Default"); mp_ass_set_style(style, track->PlayResY, opts->sub_style); }
if (opts->ass_style_override) ass_process_force_style(track);}
static const char *const font_mimetypes[] = { "application/x-truetype-font", "application/vnd.ms-opentype", "application/x-font-ttf", "application/x-font", // probably incorrect "font/collection", "font/otf", "font/sfnt", "font/ttf", NULL};
static const char *const font_exts[] = {".ttf", ".ttc", ".otf", ".otc", NULL};
static bool attachment_is_font(struct mp_log *log, struct demux_attachment *f){ if (!f->name || !f->type || !f->data || !f->data_size) return false; for (int n = 0; font_mimetypes[n]; n++) { if (strcmp(font_mimetypes[n], f->type) == 0) return true; } // fallback: match against file extension char *ext = strlen(f->name) > 4 ? f->name + strlen(f->name) - 4 : ""; for (int n = 0; font_exts[n]; n++) { if (strcasecmp(ext, font_exts[n]) == 0) { mp_warn(log, "Loading font attachment '%s' with MIME type %s. " "Assuming this is a broken Matroska file, which was " "muxed without setting a correct font MIME type.\n", f->name, f->type); return true; } } return false;}
static void add_subtitle_fonts(struct sd *sd){ struct sd_ass_priv *ctx = sd->priv; struct mp_subtitle_opts *opts = sd->opts; if (!opts->ass_enabled || !opts->use_embedded_fonts || !sd->attachments) return; for (int i = 0; i < sd->attachments->num_entries; i++) { struct demux_attachment *f = &sd->attachments->entries[i]; if (attachment_is_font(sd->log, f)) ass_add_font(ctx->ass_library, f->name, f->data, f->data_size); }}
static void enable_output(struct sd *sd, bool enable){ struct sd_ass_priv *ctx = sd->priv; if (enable == !!ctx->ass_renderer) return; if (ctx->ass_renderer) { ass_renderer_done(ctx->ass_renderer); ctx->ass_renderer = NULL; } else { ctx->ass_renderer = ass_renderer_init(ctx->ass_library);
mp_ass_configure_fonts(ctx->ass_renderer, sd->opts->sub_style, sd->global, sd->log); }}
static int init(struct sd *sd){ struct mp_subtitle_opts *opts = sd->opts; struct sd_ass_priv *ctx = talloc_zero(sd, struct sd_ass_priv); sd->priv = ctx;
char *extradata = sd->codec->extradata; int extradata_size = sd->codec->extradata_size;
if (strcmp(sd->codec->codec, "ass") != 0) { ctx->is_converted = true; ctx->converter = lavc_conv_create(sd->log, sd->codec->codec, extradata, extradata_size); if (!ctx->converter) return -1; extradata = lavc_conv_get_extradata(ctx->converter); extradata_size = extradata ? strlen(extradata) : 0;
if (strcmp(sd->codec->codec, "eia_608") == 0) ctx->duration_unknown = 1; }
ctx->ass_library = mp_ass_init(sd->global, sd->log); ass_set_extract_fonts(ctx->ass_library, opts->use_embedded_fonts);
add_subtitle_fonts(sd);
if (opts->ass_style_override) ass_set_style_overrides(ctx->ass_library, opts->ass_force_style_list);
ctx->ass_track = ass_new_track(ctx->ass_library); ctx->ass_track->track_type = TRACK_TYPE_ASS;
ctx->shadow_track = ass_new_track(ctx->ass_library); ctx->shadow_track->PlayResX = 384; ctx->shadow_track->PlayResY = 288; mp_ass_add_default_styles(ctx->shadow_track, opts);
if (extradata) ass_process_codec_private(ctx->ass_track, extradata, extradata_size);
mp_ass_add_default_styles(ctx->ass_track, opts);
#if LIBASS_VERSION >= 0x01302000 ass_set_check_readorder(ctx->ass_track, sd->opts->sub_clear_on_seek ? 0 : 1);#endif
enable_output(sd, true);
ctx->packer = mp_ass_packer_alloc(ctx);
return 0;}
// Test if the packet with the given file position (used as unique ID) was// already consumed. Return false if the packet is new (and add it to the// internal list), and return true if it was already seen.static bool check_packet_seen(struct sd *sd, int64_t pos){ struct sd_ass_priv *priv = sd->priv; int a = 0; int b = priv->num_seen_packets; while (a < b) { int mid = a + (b - a) / 2; int64_t val = priv->seen_packets[mid]; if (pos == val) return true; if (pos > val) { a = mid + 1; } else { b = mid; } } MP_TARRAY_INSERT_AT(priv, priv->seen_packets, priv->num_seen_packets, a, pos); return false;}
#define UNKNOWN_DURATION (INT_MAX / 1000)
static void decode(struct sd *sd, struct demux_packet *packet){ struct sd_ass_priv *ctx = sd->priv; ASS_Track *track = ctx->ass_track; if (ctx->converter) { if (!sd->opts->sub_clear_on_seek && packet->pos >= 0 && check_packet_seen(sd, packet->pos)) return;
double sub_pts = 0; double sub_duration = 0; char **r = lavc_conv_decode(ctx->converter, packet, &sub_pts, &sub_duration); if (packet->duration < 0 || sub_duration == UINT32_MAX) { if (!ctx->duration_unknown) { MP_WARN(sd, "Subtitle with unknown duration.\n"); ctx->duration_unknown = true; } sub_duration = UNKNOWN_DURATION; }
for (int n = 0; r && r[n]; n++) { char *ass_line = r[n]; if (sd->opts->sub_filter_SDH) ass_line = filter_SDH(sd, track->event_format, 1, ass_line, 0); if (ass_line) ass_process_chunk(track, ass_line, strlen(ass_line), llrint(sub_pts * 1000), llrint(sub_duration * 1000)); if (sd->opts->sub_filter_SDH) talloc_free(ass_line); } if (ctx->duration_unknown) { for (int n = 0; n < track->n_events - 1; n++) { if (track->events[n].Duration == UNKNOWN_DURATION * 1000) { track->events[n].Duration = track->events[n + 1].Start - track->events[n].Start; } } } } else { // Note that for this packet format, libass has an internal mechanism // for discarding duplicate (already seen) packets. char *ass_line = packet->buffer; int ass_len = packet->len; if (sd->opts->sub_filter_SDH) { ass_line = filter_SDH(sd, track->event_format, 1, ass_line, ass_len); ass_len = ass_line ? strlen(ass_line) : 0; } if (ass_line) ass_process_chunk(track, ass_line, ass_len, llrint(packet->pts * 1000), llrint(packet->duration * 1000)); if (sd->opts->sub_filter_SDH) talloc_free(ass_line); }}
static void configure_ass(struct sd *sd, struct mp_osd_res *dim, bool converted, ASS_Track *track){ struct mp_subtitle_opts *opts = sd->opts; struct sd_ass_priv *ctx = sd->priv; ASS_Renderer *priv = ctx->ass_renderer;
ass_set_frame_size(priv, dim->w, dim->h); ass_set_margins(priv, dim->mt, dim->mb, dim->ml, dim->mr);
bool set_use_margins = false; int set_sub_pos = 0; float set_line_spacing = 0; float set_font_scale = 1; int set_hinting = 0; bool set_scale_with_window = false; bool set_scale_by_window = true; bool total_override = false; // With forced overrides, apply the --sub-* specific options if (converted || opts->ass_style_override == 3) { // 'force' set_scale_with_window = opts->sub_scale_with_window; set_use_margins = opts->sub_use_margins; set_scale_by_window = opts->sub_scale_by_window; total_override = true; } else { set_scale_with_window = opts->ass_scale_with_window; set_use_margins = opts->ass_use_margins; } if (converted || opts->ass_style_override) { set_sub_pos = 100 - opts->sub_pos; set_line_spacing = opts->ass_line_spacing; set_hinting = opts->ass_hinting; set_font_scale = opts->sub_scale; } if (set_scale_with_window) { int vidh = dim->h - (dim->mt + dim->mb); set_font_scale *= dim->h / (float)MPMAX(vidh, 1); } if (!set_scale_by_window) { double factor = dim->h / 720.0; if (factor != 0.0) set_font_scale /= factor; } ass_set_use_margins(priv, set_use_margins); ass_set_line_position(priv, set_sub_pos); ass_set_shaper(priv, opts->ass_shaper); int set_force_flags = 0; if (total_override) set_force_flags |= ASS_OVERRIDE_BIT_STYLE | ASS_OVERRIDE_BIT_FONT_SIZE; if (opts->ass_style_override == 4) // 'scale' set_force_flags |= ASS_OVERRIDE_BIT_FONT_SIZE;#if LIBASS_VERSION >= 0x01201001 if (converted) set_force_flags |= ASS_OVERRIDE_BIT_ALIGNMENT;#endif#ifdef ASS_JUSTIFY_AUTO if ((converted || opts->ass_style_override) && opts->ass_justify) set_force_flags |= ASS_OVERRIDE_BIT_JUSTIFY;#endif ass_set_selective_style_override_enabled(priv, set_force_flags); ASS_Style style = {0}; mp_ass_set_style(&style, 288, opts->sub_style); ass_set_selective_style_override(priv, &style); free(style.FontName); if (converted && track->default_style < track->n_styles) { mp_ass_set_style(track->styles + track->default_style, track->PlayResY, opts->sub_style); } ass_set_font_scale(priv, set_font_scale); ass_set_hinting(priv, set_hinting); ass_set_line_spacing(priv, set_line_spacing);}
static bool has_overrides(char *s){ if (!s) return false; return strstr(s, "\\pos") || strstr(s, "\\move") || strstr(s, "\\clip") || strstr(s, "\\iclip") || strstr(s, "\\org") || strstr(s, "\\p");}
#define END(ev) ((ev)->Start + (ev)->Duration)
static long long find_timestamp(struct sd *sd, double pts){ struct sd_ass_priv *priv = sd->priv; if (pts == MP_NOPTS_VALUE) return 0;
long long ts = llrint(pts * 1000);
if (!sd->opts->sub_fix_timing || sd->opts->ass_style_override == 0) return ts;
// Try to fix small gaps and overlaps. ASS_Track *track = priv->ass_track; int threshold = SUB_GAP_THRESHOLD * 1000; int keep = SUB_GAP_KEEP * 1000;
// Find the "current" event. ASS_Event *ev[2] = {0}; int n_ev = 0; for (int n = 0; n < track->n_events; n++) { ASS_Event *event = &track->events[n]; if (ts >= event->Start - threshold && ts <= END(event) + threshold) { if (n_ev >= MP_ARRAY_SIZE(ev)) return ts; // multiple overlaps - give up (probably complex subs) ev[n_ev++] = event; } }
if (n_ev != 2) return ts;
// Simple/minor heuristic against destroying typesetting. if (ev[0]->Style != ev[1]->Style || has_overrides(ev[0]->Text) || has_overrides(ev[1]->Text)) return ts;
// Sort by start timestamps. if (ev[0]->Start > ev[1]->Start) MPSWAP(ASS_Event*, ev[0], ev[1]);
// We want to fix partial overlaps only. if (END(ev[0]) >= END(ev[1])) return ts;
if (ev[0]->Duration < keep || ev[1]->Duration < keep) return ts;
// Gap between the events -> move ts to show the end of the first event. if (ts >= END(ev[0]) && ts < ev[1]->Start && END(ev[0]) < ev[1]->Start && END(ev[0]) + threshold >= ev[1]->Start) return END(ev[0]) - 1;
// Overlap -> move ts to the (exclusive) end of the first event. // Relies on the fact that the ASS_Renderer has no overlap registered, even // if there is one. This happens to work because we never render the // overlapped state, and libass never resolves a collision. if (ts >= ev[1]->Start && ts <= END(ev[0]) && END(ev[0]) > ev[1]->Start && END(ev[0]) <= ev[1]->Start + threshold) return END(ev[0]);
return ts;}
#undef END
static void get_bitmaps(struct sd *sd, struct mp_osd_res dim, int format, double pts, struct sub_bitmaps *res){ struct sd_ass_priv *ctx = sd->priv; struct mp_subtitle_opts *opts = sd->opts; bool no_ass = !opts->ass_enabled || ctx->on_top || opts->ass_style_override == 5; bool converted = ctx->is_converted || no_ass; ASS_Track *track = no_ass ? ctx->shadow_track : ctx->ass_track; ASS_Renderer *renderer = ctx->ass_renderer;
if (pts == MP_NOPTS_VALUE || !renderer) return;
double scale = dim.display_par; if (!converted && (!opts->ass_style_override || opts->ass_vsfilter_aspect_compat)) { // Let's use the original video PAR for vsfilter compatibility: double par = ctx->video_params.p_w / (double)ctx->video_params.p_h; if (isnormal(par)) scale *= par; } configure_ass(sd, &dim, converted, track); ass_set_pixel_aspect(renderer, scale); if (!converted && (!opts->ass_style_override || opts->ass_vsfilter_blur_compat)) { ass_set_storage_size(renderer, ctx->video_params.w, ctx->video_params.h); } else { ass_set_storage_size(renderer, 0, 0); } long long ts = find_timestamp(sd, pts); if (ctx->duration_unknown && pts != MP_NOPTS_VALUE) { mp_ass_flush_old_events(track, ts); ctx->num_seen_packets = 0; sd->preload_ok = false; }
if (no_ass) fill_plaintext(sd, pts);
int changed; ASS_Image *imgs = ass_render_frame(renderer, track, ts, &changed); mp_ass_packer_pack(ctx->packer, &imgs, 1, changed, format, res);
if (!converted && res->num_parts > 0) { // mangle_colors() modifies the color field, so copy the thing. MP_TARRAY_GROW(ctx, ctx->bs, res->num_parts); memcpy(ctx->bs, res->parts, sizeof(ctx->bs[0]) * res->num_parts); res->parts = ctx->bs;
mangle_colors(sd, res); }}
struct buf { char *start; int size; int len;};
static void append(struct buf *b, char c){ if (b->len < b->size) { b->start[b->len] = c; b->len++; }}
static void ass_to_plaintext(struct buf *b, const char *in){ bool in_tag = false; const char *open_tag_pos = NULL; bool in_drawing = false; while (*in) { if (in_tag) { if (in[0] == '}') { in += 1; in_tag = false; } else if (in[0] == '\\' && in[1] == 'p') { in += 2; // Skip text between \pN and \p0 tags. A \p without a number // is the same as \p0, and leading 0s are also allowed. in_drawing = false; while (in[0] >= '0' && in[0] <= '9') { if (in[0] != '0') in_drawing = true; in += 1; } } else { in += 1; } } else { if (in[0] == '\\' && (in[1] == 'N' || in[1] == 'n')) { in += 2; append(b, '\n'); } else if (in[0] == '\\' && in[1] == 'h') { in += 2; append(b, ' '); } else if (in[0] == '{') { open_tag_pos = in; in += 1; in_tag = true; } else { if (!in_drawing) append(b, in[0]); in += 1; } } } // A '{' without a closing '}' is always visible. if (in_tag) { while (*open_tag_pos) append(b, *open_tag_pos++); }}
// Empty string counts as whitespace. Reads s[len-1] even if there are \0s.static bool is_whitespace_only(char *s, int len){ for (int n = 0; n < len; n++) { if (s[n] != ' ' && s[n] != '\t') return false; } return true;}
static char *get_text(struct sd *sd, double pts){ struct sd_ass_priv *ctx = sd->priv; ASS_Track *track = ctx->ass_track;
if (pts == MP_NOPTS_VALUE) return NULL; long long ipts = find_timestamp(sd, pts);
struct buf b = {ctx->last_text, sizeof(ctx->last_text) - 1};
for (int i = 0; i < track->n_events; ++i) { ASS_Event *event = track->events + i; if (ipts >= event->Start && ipts < event->Start + event->Duration) { if (event->Text) { int start = b.len; ass_to_plaintext(&b, event->Text); if (is_whitespace_only(&b.start[start], b.len - start)) { b.len = start; } else { append(&b, '\n'); } } } }
b.start[b.len] = '\0';
if (b.len > 0 && b.start[b.len - 1] == '\n') b.start[b.len - 1] = '\0';
return ctx->last_text;}
static struct sd_times get_times(struct sd *sd, double pts){ struct sd_ass_priv *ctx = sd->priv; ASS_Track *track = ctx->ass_track; struct sd_times res = { .start = MP_NOPTS_VALUE, .end = MP_NOPTS_VALUE };
if (pts == MP_NOPTS_VALUE || ctx->duration_unknown) return res;
long long ipts = find_timestamp(sd, pts);
for (int i = 0; i < track->n_events; ++i) { ASS_Event *event = track->events + i; if (ipts >= event->Start && ipts < event->Start + event->Duration) { double start = event->Start / 1000.0; double end = event->Duration == UNKNOWN_DURATION ? MP_NOPTS_VALUE : (event->Start + event->Duration) / 1000.0;
if (res.start == MP_NOPTS_VALUE || res.start > start) res.start = start;
if (res.end == MP_NOPTS_VALUE || res.end < end) res.end = end; } }
return res;}
static void fill_plaintext(struct sd *sd, double pts){ struct sd_ass_priv *ctx = sd->priv; ASS_Track *track = ctx->shadow_track;
ass_flush_events(track);
char *text = get_text(sd, pts); if (!text) return;
bstr dst = {0};
if (ctx->on_top) bstr_xappend(NULL, &dst, bstr0("{\\a6}"));
while (*text) { if (*text == '{') bstr_xappend(NULL, &dst, bstr0("\\")); bstr_xappend(NULL, &dst, (bstr){text, 1}); // Break ASS escapes with U+2060 WORD JOINER if (*text == '\\') mp_append_utf8_bstr(NULL, &dst, 0x2060); text++; }
if (!dst.start) return;
int n = ass_alloc_event(track); ASS_Event *event = track->events + n; event->Start = 0; event->Duration = INT_MAX; event->Style = track->default_style; event->Text = strdup(dst.start);
talloc_free(dst.start);}
static void reset(struct sd *sd){ struct sd_ass_priv *ctx = sd->priv; if (sd->opts->sub_clear_on_seek || ctx->duration_unknown) { ass_flush_events(ctx->ass_track); ctx->num_seen_packets = 0; sd->preload_ok = false; } if (ctx->converter) lavc_conv_reset(ctx->converter);}
static void uninit(struct sd *sd){ struct sd_ass_priv *ctx = sd->priv;
if (ctx->converter) lavc_conv_uninit(ctx->converter); ass_free_track(ctx->ass_track); ass_free_track(ctx->shadow_track); enable_output(sd, false); ass_library_done(ctx->ass_library);}
static int control(struct sd *sd, enum sd_ctrl cmd, void *arg){ struct sd_ass_priv *ctx = sd->priv; switch (cmd) { case SD_CTRL_SUB_STEP: { double *a = arg; long long ts = llrint(a[0] * 1000.0); long long res = ass_step_sub(ctx->ass_track, ts, a[1]); if (!res) return false; a[0] += res / 1000.0; return true; } case SD_CTRL_SET_VIDEO_PARAMS: ctx->video_params = *(struct mp_image_params *)arg; return CONTROL_OK; case SD_CTRL_SET_TOP: ctx->on_top = *(bool *)arg; return CONTROL_OK; default: return CONTROL_UNKNOWN; }}
const struct sd_functions sd_ass = { .name = "ass", .accept_packets_in_advance = true, .init = init, .decode = decode, .get_bitmaps = get_bitmaps, .get_text = get_text, .get_times = get_times, .control = control, .reset = reset, .select = enable_output, .uninit = uninit,};
// Disgusting hack for (xy-)vsfilter color compatibility.static void mangle_colors(struct sd *sd, struct sub_bitmaps *parts){ struct mp_subtitle_opts *opts = sd->opts; struct sd_ass_priv *ctx = sd->priv; enum mp_csp csp = 0; enum mp_csp_levels levels = 0; if (opts->ass_vsfilter_color_compat == 0) // "no" return; bool force_601 = opts->ass_vsfilter_color_compat == 3; ASS_Track *track = ctx->ass_track; static const int ass_csp[] = { [YCBCR_BT601_TV] = MP_CSP_BT_601, [YCBCR_BT601_PC] = MP_CSP_BT_601, [YCBCR_BT709_TV] = MP_CSP_BT_709, [YCBCR_BT709_PC] = MP_CSP_BT_709, [YCBCR_SMPTE240M_TV] = MP_CSP_SMPTE_240M, [YCBCR_SMPTE240M_PC] = MP_CSP_SMPTE_240M, }; static const int ass_levels[] = { [YCBCR_BT601_TV] = MP_CSP_LEVELS_TV, [YCBCR_BT601_PC] = MP_CSP_LEVELS_PC, [YCBCR_BT709_TV] = MP_CSP_LEVELS_TV, [YCBCR_BT709_PC] = MP_CSP_LEVELS_PC, [YCBCR_SMPTE240M_TV] = MP_CSP_LEVELS_TV, [YCBCR_SMPTE240M_PC] = MP_CSP_LEVELS_PC, }; int trackcsp = track->YCbCrMatrix; if (force_601) trackcsp = YCBCR_BT601_TV; // NONE is a bit random, but the intention is: don't modify colors. if (trackcsp == YCBCR_NONE) return; if (trackcsp < sizeof(ass_csp) / sizeof(ass_csp[0])) csp = ass_csp[trackcsp]; if (trackcsp < sizeof(ass_levels) / sizeof(ass_levels[0])) levels = ass_levels[trackcsp]; if (trackcsp == YCBCR_DEFAULT) { csp = MP_CSP_BT_601; levels = MP_CSP_LEVELS_TV; } // Unknown colorspace (either YCBCR_UNKNOWN, or a valid value unknown to us) if (!csp || !levels) return;
struct mp_image_params params = ctx->video_params;
if (force_601) { params.color = (struct mp_colorspace){ .space = MP_CSP_BT_709, .levels = MP_CSP_LEVELS_TV, }; }
if (csp == params.color.space && levels == params.color.levels) return;
bool basic_conv = params.color.space == MP_CSP_BT_709 && params.color.levels == MP_CSP_LEVELS_TV && csp == MP_CSP_BT_601 && levels == MP_CSP_LEVELS_TV;
// With "basic", only do as much as needed for basic compatibility. if (opts->ass_vsfilter_color_compat == 1 && !basic_conv) return;
if (params.color.space != ctx->last_params.color.space || params.color.levels != ctx->last_params.color.levels) { int msgl = basic_conv ? MSGL_V : MSGL_WARN; ctx->last_params = params; MP_MSG(sd, msgl, "mangling colors like vsfilter: " "RGB -> %s %s -> %s %s -> RGB\n", m_opt_choice_str(mp_csp_names, csp), m_opt_choice_str(mp_csp_levels_names, levels), m_opt_choice_str(mp_csp_names, params.color.space), m_opt_choice_str(mp_csp_names, params.color.levels)); }
// Conversion that VSFilter would use struct mp_csp_params vs_params = MP_CSP_PARAMS_DEFAULTS; vs_params.color.space = csp; vs_params.color.levels = levels; struct mp_cmat vs_yuv2rgb, vs_rgb2yuv; mp_get_csp_matrix(&vs_params, &vs_yuv2rgb); mp_invert_cmat(&vs_rgb2yuv, &vs_yuv2rgb);
// Proper conversion to RGB struct mp_csp_params rgb_params = MP_CSP_PARAMS_DEFAULTS; rgb_params.color = params.color; struct mp_cmat vs2rgb; mp_get_csp_matrix(&rgb_params, &vs2rgb);
for (int n = 0; n < parts->num_parts; n++) { struct sub_bitmap *sb = &parts->parts[n]; uint32_t color = sb->libass.color; int r = (color >> 24u) & 0xff; int g = (color >> 16u) & 0xff; int b = (color >> 8u) & 0xff; int a = 0xff - (color & 0xff); int rgb[3] = {r, g, b}, yuv[3]; mp_map_fixp_color(&vs_rgb2yuv, 8, rgb, 8, yuv); mp_map_fixp_color(&vs2rgb, 8, yuv, 8, rgb); sb->libass.color = MP_ASS_RGBA(rgb[0], rgb[1], rgb[2], a); }}