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Thu, 19 Aug 2021 07:43:19 +0000 From: Soft Works To: "ffmpeg-devel@ffmpeg.org" Thread-Topic: [PATCH 4/9] avfilter/overlay_subs: Add overlay_subs filter Thread-Index: AdeUg3cRVq0PefFKThChNYVeZezOUQ== Date: Thu, 19 Aug 2021 07:43:19 +0000 Message-ID: Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-ms-exchange-messagesentrepresentingtype: 1 x-tmn: [Qig25QeWgO76XbmCT7KJM9Gl9IrjHNMJ] x-ms-publictraffictype: Email x-ms-office365-filtering-correlation-id: 5ae5edab-8626-4e80-7d21-08d962e5038a x-ms-traffictypediagnostic: MN2PR04MB6255: x-microsoft-antispam: BCL:0; x-microsoft-antispam-message-info: WRjOUZ4V0R2LkaEkR4wjeCLvlh0E2kWDoTforRYtge7XH1ayK9D1KRaWrz+bq04AOrnku8gqtpnpEujmQhOG7hGiX3SLRNsyG/jyQHHEnAeMXS20udKxvbY6wGsX2238rAgE5rLTdeIibRR1UIZDwL0dBfXClrb7OhWMDYpUtM3GQ173GTE/k4KYAnIxF9MIMx9hm8WHqa9QoiE8nNG/x2rdDf8oDMcUxBLAVGDaMfQlYAj6Z83wJa6H+4Rgey3U33Ny/bqZZrbK4qL0u2L5ys/W9snWHFTSEvD6ypreIQX1DZiH6aDZpmUe3ImovVpnhgiBogZeS9E314cwLzqjynEDQS+kJ1S/+rNwUH1xH7ngL4/hoVtgR+kdgp96KLIThIU+2bNVUrjHGZsyM70avWCS4Y7Qz/RzRP5N6IxZrH2hJ6PWsVKnqcSbp4ssC5Hm x-ms-exchange-antispam-messagedata-chunkcount: 1 x-ms-exchange-antispam-messagedata-0: qxN3TSKTUjaf+Cn+UUDlLjDZ7m9A6hRYVMvo5XrvG7rHwiCWMz5VlFSFre+1hFDMxVKdSD5a6obuqIfBaUjJ3XQ80xnJMMMniHyiWYKC/UkHemY5A4gZXdWWburg6bUQ0uZriEs6vciTUs8Y+2bPyw== x-ms-exchange-transport-forked: True MIME-Version: 1.0 X-OriginatorOrg: sct-15-20-3174-20-msonline-outlook-529c7.templateTenant X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-AuthSource: MN2PR04MB5981.namprd04.prod.outlook.com X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-CrossTenant-Network-Message-Id: 5ae5edab-8626-4e80-7d21-08d962e5038a X-MS-Exchange-CrossTenant-originalarrivaltime: 19 Aug 2021 07:43:19.5206 (UTC) X-MS-Exchange-CrossTenant-fromentityheader: Hosted X-MS-Exchange-CrossTenant-id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-rms-persistedconsumerorg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: MN2PR04MB6255 Subject: [FFmpeg-devel] [PATCH 4/9] avfilter/overlay_subs: Add overlay_subs filter X-BeenThere: ffmpeg-devel@ffmpeg.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: FFmpeg development discussions and patches List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-To: FFmpeg development discussions and patches Errors-To: ffmpeg-devel-bounces@ffmpeg.org Sender: "ffmpeg-devel" X-TUID: lXoCmYxS9Lfv Signed-off-by: softworkz --- libavfilter/Makefile | 1 + libavfilter/allfilters.c | 1 + libavfilter/vf_overlay_subs.c | 1173 +++++++++++++++++++++++++++++++++ libavfilter/vf_overlay_subs.h | 88 +++ 4 files changed, 1263 insertions(+) create mode 100644 libavfilter/vf_overlay_subs.c create mode 100644 libavfilter/vf_overlay_subs.h diff --git a/libavfilter/Makefile b/libavfilter/Makefile index db32cf1265..68a7f5cb88 100644 --- a/libavfilter/Makefile +++ b/libavfilter/Makefile @@ -357,6 +357,7 @@ OBJS-$(CONFIG_OVERLAY_CUDA_FILTER) += vf_overlay_cuda.o framesync.o vf OBJS-$(CONFIG_OVERLAY_OPENCL_FILTER) += vf_overlay_opencl.o opencl.o \ opencl/overlay.o framesync.o OBJS-$(CONFIG_OVERLAY_QSV_FILTER) += vf_overlay_qsv.o framesync.o +OBJS-$(CONFIG_OVERLAY_SUBS_FILTER) += vf_overlay_subs.o framesync.o OBJS-$(CONFIG_OVERLAY_VULKAN_FILTER) += vf_overlay_vulkan.o vulkan.o OBJS-$(CONFIG_OWDENOISE_FILTER) += vf_owdenoise.o OBJS-$(CONFIG_PAD_FILTER) += vf_pad.o diff --git a/libavfilter/allfilters.c b/libavfilter/allfilters.c index 73040d2824..abd0a47750 100644 --- a/libavfilter/allfilters.c +++ b/libavfilter/allfilters.c @@ -339,6 +339,7 @@ extern const AVFilter ff_vf_oscilloscope; extern const AVFilter ff_vf_overlay; extern const AVFilter ff_vf_overlay_opencl; extern const AVFilter ff_vf_overlay_qsv; +extern const AVFilter ff_vf_overlay_subs; extern const AVFilter ff_vf_overlay_vulkan; extern const AVFilter ff_vf_overlay_cuda; extern const AVFilter ff_vf_owdenoise; diff --git a/libavfilter/vf_overlay_subs.c b/libavfilter/vf_overlay_subs.c new file mode 100644 index 0000000000..02659300a9 --- /dev/null +++ b/libavfilter/vf_overlay_subs.c @@ -0,0 +1,1173 @@ +/* + * Copyright (c) 2010 Stefano Sabatini + * Copyright (c) 2010 Baptiste Coudurier + * Copyright (c) 2007 Bobby Bingham + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file + * overlay one video on top of another + */ + +#include "avfilter.h" +#include "formats.h" +#include "libavutil/common.h" +#include "libavutil/eval.h" +#include "libavutil/avstring.h" +#include "libavutil/pixdesc.h" +#include "libavutil/imgutils.h" +#include "libavutil/mathematics.h" +#include "libavutil/opt.h" +#include "libavutil/timestamp.h" +#include "internal.h" +#include "drawutils.h" +#include "framesync.h" +#include "video.h" +#include "vf_overlay_subs.h" + +#include "libavcodec/avcodec.h" + +typedef struct ThreadData { + AVFrame *dst; + AVSubtitleRect *src; +} ThreadData; + +static const char *const var_names[] = { + "main_w", "W", ///< width of the main video + "main_h", "H", ///< height of the main video + "overlay_w", "w", ///< width of the overlay video + "overlay_h", "h", ///< height of the overlay video + "hsub", + "vsub", + "x", + "y", + "n", ///< number of frame + "pos", ///< position in the file + "t", ///< timestamp expressed in seconds + NULL +}; + +#define MAIN 0 +#define OVERLAY 1 + +#define R 0 +#define G 1 +#define B 2 +#define A 3 + +#define Y 0 +#define U 1 +#define V 2 + +enum EvalMode { + EVAL_MODE_INIT, + EVAL_MODE_FRAME, + EVAL_MODE_NB +}; + +static av_cold void uninit(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + ff_framesync_uninit(&s->fs); + av_expr_free(s->x_pexpr); s->x_pexpr = NULL; + av_expr_free(s->y_pexpr); s->y_pexpr = NULL; +} + +static inline int normalize_xy(double d, int chroma_sub) +{ + if (isnan(d)) + return INT_MAX; + return (int)d & ~((1 << chroma_sub) - 1); +} + +static void eval_expr(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL); + s->var_values[VAR_Y] = av_expr_eval(s->y_pexpr, s->var_values, NULL); + /* It is necessary if x is expressed from y */ + s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL); + s->x = normalize_xy(s->var_values[VAR_X], s->hsub); + s->y = normalize_xy(s->var_values[VAR_Y], s->vsub); +} + +static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx) +{ + int ret; + AVExpr *old = NULL; + + if (*pexpr) + old = *pexpr; + ret = av_expr_parse(pexpr, expr, var_names, + NULL, NULL, NULL, NULL, 0, log_ctx); + if (ret < 0) { + av_log(log_ctx, AV_LOG_ERROR, + "Error when evaluating the expression '%s' for %s\n", + expr, option); + *pexpr = old; + return ret; + } + + av_expr_free(old); + return 0; +} + +static int process_command(AVFilterContext *ctx, const char *cmd, const char *args, + char *res, int res_len, int flags) +{ + OverlaySubsContext *s = ctx->priv; + int ret; + + if (!strcmp(cmd, "x")) + ret = set_expr(&s->x_pexpr, args, cmd, ctx); + else if (!strcmp(cmd, "y")) + ret = set_expr(&s->y_pexpr, args, cmd, ctx); + else + ret = AVERROR(ENOSYS); + + if (ret < 0) + return ret; + + if (s->eval_mode == EVAL_MODE_INIT) { + eval_expr(ctx); + av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n", + s->var_values[VAR_X], s->x, + s->var_values[VAR_Y], s->y); + } + return ret; +} + +static const enum AVPixelFormat alpha_pix_fmts[] = { + AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P, + AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, + AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA, + AV_PIX_FMT_BGRA, AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE +}; + +static int query_formats(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + /* overlay formats contains alpha, for avoiding conversion with alpha information loss */ + static const enum AVPixelFormat main_pix_fmts_yuv420[] = { + AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVA420P, + AV_PIX_FMT_NV12, AV_PIX_FMT_NV21, + AV_PIX_FMT_NONE + }; + + static const enum AVPixelFormat main_pix_fmts_yuv420p10[] = { + AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUVA420P10, + AV_PIX_FMT_NONE + }; + + static const enum AVPixelFormat main_pix_fmts_yuv422[] = { + AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_NONE + }; + + static const enum AVPixelFormat main_pix_fmts_yuv422p10[] = { + AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_NONE + }; + + static const enum AVPixelFormat main_pix_fmts_yuv444[] = { + AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE + }; + + static const enum AVPixelFormat main_pix_fmts_gbrp[] = { + AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE + }; + + static const enum AVPixelFormat main_pix_fmts_rgb[] = { + AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA, + AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA, + AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24, + AV_PIX_FMT_NONE + }; + + const enum AVPixelFormat *main_formats, *overlay_formats; + AVFilterFormats *formats; + int ret; + + switch (s->format) { + case OVERLAY_FORMAT_YUV420: + main_formats = main_pix_fmts_yuv420; + break; + case OVERLAY_FORMAT_YUV420P10: + main_formats = main_pix_fmts_yuv420p10; + break; + case OVERLAY_FORMAT_YUV422: + main_formats = main_pix_fmts_yuv422; + break; + case OVERLAY_FORMAT_YUV422P10: + main_formats = main_pix_fmts_yuv422p10; + break; + case OVERLAY_FORMAT_YUV444: + main_formats = main_pix_fmts_yuv444; + break; + case OVERLAY_FORMAT_RGB: + main_formats = main_pix_fmts_rgb; + break; + case OVERLAY_FORMAT_GBRP: + main_formats = main_pix_fmts_gbrp; + break; + case OVERLAY_FORMAT_AUTO: + return ff_set_common_formats(ctx, ff_make_format_list(alpha_pix_fmts)); + default: + av_assert0(0); + } + + formats = ff_make_format_list(main_formats); + if ((ret = ff_formats_ref(formats, &ctx->inputs[MAIN]->outcfg.formats)) < 0 || + (ret = ff_formats_ref(formats, &ctx->outputs[MAIN]->incfg.formats)) < 0) + return ret; + + return ff_formats_ref(ff_make_format_list(overlay_formats), + &ctx->inputs[OVERLAY]->outcfg.formats); +} + +static int config_input_overlay(AVFilterLink *inlink) +{ + AVFilterContext *ctx = inlink->dst; + OverlaySubsContext *s = inlink->dst->priv; + int ret; + const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(AV_PIX_FMT_BGRA); + + av_image_fill_max_pixsteps(s->overlay_pix_step, NULL, pix_desc); + + /* Finish the configuration by evaluating the expressions + now when both inputs are configured. */ + s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = ctx->inputs[MAIN ]->w; + s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = ctx->inputs[MAIN ]->h; + s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = ctx->inputs[OVERLAY]->w; + s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = ctx->inputs[OVERLAY]->h; + s->var_values[VAR_HSUB] = 1<log2_chroma_w; + s->var_values[VAR_VSUB] = 1<log2_chroma_h; + s->var_values[VAR_X] = NAN; + s->var_values[VAR_Y] = NAN; + s->var_values[VAR_N] = 0; + s->var_values[VAR_T] = NAN; + s->var_values[VAR_POS] = NAN; + + if ((ret = set_expr(&s->x_pexpr, s->x_expr, "x", ctx)) < 0 || + (ret = set_expr(&s->y_pexpr, s->y_expr, "y", ctx)) < 0) + return ret; + + s->overlay_is_packed_rgb = + ff_fill_rgba_map(s->overlay_rgba_map, AV_PIX_FMT_BGRA) >= 0; + s->overlay_has_alpha = ff_fmt_is_in(AV_PIX_FMT_BGRA, alpha_pix_fmts); + + if (s->eval_mode == EVAL_MODE_INIT) { + eval_expr(ctx); + av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n", + s->var_values[VAR_X], s->x, + s->var_values[VAR_Y], s->y); + } + + av_log(ctx, AV_LOG_VERBOSE, + "main w:%d h:%d fmt:%s overlay w:%d h:%d fmt:%s\n", + ctx->inputs[MAIN]->w, ctx->inputs[MAIN]->h, + av_get_pix_fmt_name(ctx->inputs[MAIN]->format), + ctx->inputs[OVERLAY]->w, ctx->inputs[OVERLAY]->h, + av_get_pix_fmt_name(ctx->inputs[OVERLAY]->format)); + return 0; +} + +static int config_output(AVFilterLink *outlink) +{ + AVFilterContext *ctx = outlink->src; + OverlaySubsContext *s = ctx->priv; + int ret; + + if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0) + return ret; + + outlink->w = ctx->inputs[MAIN]->w; + outlink->h = ctx->inputs[MAIN]->h; + outlink->time_base = ctx->inputs[MAIN]->time_base; + + return ff_framesync_configure(&s->fs); +} + +// divide by 255 and round to nearest +// apply a fast variant: (X+127)/255 = ((X+127)*257+257)>>16 = ((X+128)*257)>>16 +#define FAST_DIV255(x) ((((x) + 128) * 257) >> 16) + +// calculate the unpremultiplied alpha, applying the general equation: +// alpha = alpha_overlay / ( (alpha_main + alpha_overlay) - (alpha_main * alpha_overlay) ) +// (((x) << 16) - ((x) << 9) + (x)) is a faster version of: 255 * 255 * x +// ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)) is a faster version of: 255 * (x + y) +#define UNPREMULTIPLY_ALPHA(x, y) ((((x) << 16) - ((x) << 9) + (x)) / ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x))) + +/** + * Blend image in src to destination buffer dst at position (x, y). + */ + +static av_always_inline void blend_slice_packed_rgb(AVFilterContext *ctx, + AVFrame *dst, const AVSubtitleRect *src, + int main_has_alpha, int x, int y, + int is_straight, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + int i, imax, j, jmax; + const int src_w = src->w; + const int src_h = src->h; + const int dst_w = dst->width; + const int dst_h = dst->height; + uint8_t alpha; ///< the amount of overlay to blend on to main + const int dr = s->main_rgba_map[R]; + const int dg = s->main_rgba_map[G]; + const int db = s->main_rgba_map[B]; + const int da = s->main_rgba_map[A]; + const int dstep = s->main_pix_step[0]; + const int sr = s->overlay_rgba_map[R]; + const int sg = s->overlay_rgba_map[G]; + const int sb = s->overlay_rgba_map[B]; + const int sa = s->overlay_rgba_map[A]; + const int sstep = s->overlay_pix_step[0]; + int slice_start, slice_end; + uint8_t *S, *sp, *d, *dp; + + i = FFMAX(-y, 0); + imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); + + slice_start = i + (imax * jobnr) / nb_jobs; + slice_end = i + (imax * (jobnr+1)) / nb_jobs; + + sp = src->data[0] + (slice_start) * src->linesize[0]; + dp = dst->data[0] + (y + slice_start) * dst->linesize[0]; + + for (i = slice_start; i < slice_end; i++) { + j = FFMAX(-x, 0); + S = sp + j * sstep; + d = dp + (x+j) * dstep; + + for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { + alpha = S[sa]; + + // if the main channel has an alpha channel, alpha has to be calculated + // to create an un-premultiplied (straight) alpha value + if (main_has_alpha && alpha != 0 && alpha != 255) { + uint8_t alpha_d = d[da]; + alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); + } + + switch (alpha) { + case 0: + break; + case 255: + d[dr] = S[sr]; + d[dg] = S[sg]; + d[db] = S[sb]; + break; + default: + // main_value = main_value * (1 - alpha) + overlay_value * alpha + // since alpha is in the range 0-255, the result must divided by 255 + d[dr] = is_straight ? FAST_DIV255(d[dr] * (255 - alpha) + S[sr] * alpha) : + FFMIN(FAST_DIV255(d[dr] * (255 - alpha)) + S[sr], 255); + d[dg] = is_straight ? FAST_DIV255(d[dg] * (255 - alpha) + S[sg] * alpha) : + FFMIN(FAST_DIV255(d[dg] * (255 - alpha)) + S[sg], 255); + d[db] = is_straight ? FAST_DIV255(d[db] * (255 - alpha) + S[sb] * alpha) : + FFMIN(FAST_DIV255(d[db] * (255 - alpha)) + S[sb], 255); + } + if (main_has_alpha) { + switch (alpha) { + case 0: + break; + case 255: + d[da] = S[sa]; + break; + default: + // apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha + d[da] += FAST_DIV255((255 - d[da]) * S[sa]); + } + } + d += dstep; + S += sstep; + } + dp += dst->linesize[0]; + sp += src->linesize[0]; + } +} + +#define DEFINE_BLEND_PLANE(depth, nbits) \ +static av_always_inline void blend_plane_##depth##_##nbits##bits(AVFilterContext *ctx, \ + AVFrame *dst, const AVFrame *src, \ + int src_w, int src_h, \ + int dst_w, int dst_h, \ + int i, int hsub, int vsub, \ + int x, int y, \ + int main_has_alpha, \ + int dst_plane, \ + int dst_offset, \ + int dst_step, \ + int straight, \ + int yuv, \ + int jobnr, \ + int nb_jobs) \ +{ \ + OverlaySubsContext *octx = ctx->priv; \ + int src_wp = AV_CEIL_RSHIFT(src_w, hsub); \ + int src_hp = AV_CEIL_RSHIFT(src_h, vsub); \ + int dst_wp = AV_CEIL_RSHIFT(dst_w, hsub); \ + int dst_hp = AV_CEIL_RSHIFT(dst_h, vsub); \ + int yp = y>>vsub; \ + int xp = x>>hsub; \ + uint##depth##_t *s, *sp, *d, *dp, *dap, *a, *da, *ap; \ + int jmax, j, k, kmax; \ + int slice_start, slice_end; \ + const uint##depth##_t max = (1 << nbits) - 1; \ + const uint##depth##_t mid = (1 << (nbits -1)) ; \ + int bytes = depth / 8; \ + \ + dst_step /= bytes; \ + j = FFMAX(-yp, 0); \ + jmax = FFMIN3(-yp + dst_hp, FFMIN(src_hp, dst_hp), yp + src_hp); \ + \ + slice_start = j + (jmax * jobnr) / nb_jobs; \ + slice_end = j + (jmax * (jobnr+1)) / nb_jobs; \ + \ + sp = (uint##depth##_t *)(src->data[i] + (slice_start) * src->linesize[i]); \ + dp = (uint##depth##_t *)(dst->data[dst_plane] \ + + (yp + slice_start) * dst->linesize[dst_plane] \ + + dst_offset); \ + ap = (uint##depth##_t *)(src->data[3] + (slice_start << vsub) * src->linesize[3]); \ + dap = (uint##depth##_t *)(dst->data[3] + ((yp + slice_start) << vsub) * dst->linesize[3]); \ + \ + for (j = slice_start; j < slice_end; j++) { \ + k = FFMAX(-xp, 0); \ + d = dp + (xp+k) * dst_step; \ + s = sp + k; \ + a = ap + (k<blend_row[i]) { \ + int c = octx->blend_row[i]((uint8_t*)d, (uint8_t*)da, (uint8_t*)s, \ + (uint8_t*)a, kmax - k, src->linesize[3]); \ + \ + s += c; \ + d += dst_step * c; \ + da += (1 << hsub) * c; \ + a += (1 << hsub) * c; \ + k += c; \ + } \ + for (; k < kmax; k++) { \ + int alpha_v, alpha_h, alpha; \ + \ + /* average alpha for color components, improve quality */ \ + if (hsub && vsub && j+1 < src_hp && k+1 < src_wp) { \ + alpha = (a[0] + a[src->linesize[3]] + \ + a[1] + a[src->linesize[3]+1]) >> 2; \ + } else if (hsub || vsub) { \ + alpha_h = hsub && k+1 < src_wp ? \ + (a[0] + a[1]) >> 1 : a[0]; \ + alpha_v = vsub && j+1 < src_hp ? \ + (a[0] + a[src->linesize[3]]) >> 1 : a[0]; \ + alpha = (alpha_v + alpha_h) >> 1; \ + } else \ + alpha = a[0]; \ + /* if the main channel has an alpha channel, alpha has to be calculated */ \ + /* to create an un-premultiplied (straight) alpha value */ \ + if (main_has_alpha && alpha != 0 && alpha != max) { \ + /* average alpha for color components, improve quality */ \ + uint8_t alpha_d; \ + if (hsub && vsub && j+1 < src_hp && k+1 < src_wp) { \ + alpha_d = (da[0] + da[dst->linesize[3]] + \ + da[1] + da[dst->linesize[3]+1]) >> 2; \ + } else if (hsub || vsub) { \ + alpha_h = hsub && k+1 < src_wp ? \ + (da[0] + da[1]) >> 1 : da[0]; \ + alpha_v = vsub && j+1 < src_hp ? \ + (da[0] + da[dst->linesize[3]]) >> 1 : da[0]; \ + alpha_d = (alpha_v + alpha_h) >> 1; \ + } else \ + alpha_d = da[0]; \ + alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); \ + } \ + if (straight) { \ + if (nbits > 8) \ + *d = (*d * (max - alpha) + *s * alpha) / max; \ + else \ + *d = FAST_DIV255(*d * (255 - alpha) + *s * alpha); \ + } else { \ + if (nbits > 8) { \ + if (i && yuv) \ + *d = av_clip((*d * (max - alpha) + *s * alpha) / max + *s - mid, -mid, mid) + mid; \ + else \ + *d = FFMIN((*d * (max - alpha) + *s * alpha) / max + *s, max); \ + } else { \ + if (i && yuv) \ + *d = av_clip(FAST_DIV255((*d - mid) * (max - alpha)) + *s - mid, -mid, mid) + mid; \ + else \ + *d = FFMIN(FAST_DIV255(*d * (max - alpha)) + *s, max); \ + } \ + } \ + s++; \ + d += dst_step; \ + da += 1 << hsub; \ + a += 1 << hsub; \ + } \ + dp += dst->linesize[dst_plane] / bytes; \ + sp += src->linesize[i] / bytes; \ + ap += (1 << vsub) * src->linesize[3] / bytes; \ + dap += (1 << vsub) * dst->linesize[3] / bytes; \ + } \ +} +DEFINE_BLEND_PLANE(8, 8) +DEFINE_BLEND_PLANE(16, 10) + +#define DEFINE_ALPHA_COMPOSITE(depth, nbits) \ +static inline void alpha_composite_##depth##_##nbits##bits(const AVFrame *src, const AVFrame *dst, \ + int src_w, int src_h, \ + int dst_w, int dst_h, \ + int x, int y, \ + int jobnr, int nb_jobs) \ +{ \ + uint##depth##_t alpha; /* the amount of overlay to blend on to main */ \ + uint##depth##_t *s, *sa, *d, *da; \ + int i, imax, j, jmax; \ + int slice_start, slice_end; \ + const uint##depth##_t max = (1 << nbits) - 1; \ + int bytes = depth / 8; \ + \ + imax = FFMIN(-y + dst_h, src_h); \ + slice_start = (imax * jobnr) / nb_jobs; \ + slice_end = ((imax * (jobnr+1)) / nb_jobs); \ + \ + i = FFMAX(-y, 0); \ + sa = (uint##depth##_t *)(src->data[3] + (i + slice_start) * src->linesize[3]); \ + da = (uint##depth##_t *)(dst->data[3] + (y + i + slice_start) * dst->linesize[3]); \ + \ + for (i = i + slice_start; i < slice_end; i++) { \ + j = FFMAX(-x, 0); \ + s = sa + j; \ + d = da + x+j; \ + \ + for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { \ + alpha = *s; \ + if (alpha != 0 && alpha != max) { \ + uint8_t alpha_d = *d; \ + alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); \ + } \ + if (alpha == max) \ + *d = *s; \ + else if (alpha > 0) { \ + /* apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha */ \ + if (nbits > 8) \ + *d += (max - *d) * *s / max; \ + else \ + *d += FAST_DIV255((max - *d) * *s); \ + } \ + d += 1; \ + s += 1; \ + } \ + da += dst->linesize[3] / bytes; \ + sa += src->linesize[3] / bytes; \ + } \ +} +DEFINE_ALPHA_COMPOSITE(8, 8) +DEFINE_ALPHA_COMPOSITE(16, 10) + +#define DEFINE_BLEND_SLICE_YUV(depth, nbits) \ +static av_always_inline void blend_slice_yuv_##depth##_##nbits##bits(AVFilterContext *ctx, \ + AVFrame *dst, const AVSubtitleRect *src, \ + int hsub, int vsub, \ + int main_has_alpha, \ + int x, int y, \ + int is_straight, \ + int jobnr, int nb_jobs) \ +{ \ + OverlaySubsContext *s = ctx->priv; \ + const int src_w = src->w; \ + const int src_h = src->h; \ + const int dst_w = dst->width; \ + const int dst_h = dst->height; \ + \ + blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 0, 0, 0, \ + x, y, main_has_alpha, s->main_desc->comp[0].plane, s->main_desc->comp[0].offset, \ + s->main_desc->comp[0].step, is_straight, 1, jobnr, nb_jobs); \ + blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 1, hsub, vsub, \ + x, y, main_has_alpha, s->main_desc->comp[1].plane, s->main_desc->comp[1].offset, \ + s->main_desc->comp[1].step, is_straight, 1, jobnr, nb_jobs); \ + blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 2, hsub, vsub, \ + x, y, main_has_alpha, s->main_desc->comp[2].plane, s->main_desc->comp[2].offset, \ + s->main_desc->comp[2].step, is_straight, 1, jobnr, nb_jobs); \ + \ + if (main_has_alpha) \ + alpha_composite_##depth##_##nbits##bits(src, dst, src_w, src_h, dst_w, dst_h, x, y, \ + jobnr, nb_jobs); \ +} +DEFINE_BLEND_SLICE_YUV(8, 8) +DEFINE_BLEND_SLICE_YUV(16, 10) + +static av_always_inline void blend_slice_planar_rgb(AVFilterContext *ctx, + AVFrame *dst, const AVFrame *src, + int hsub, int vsub, + int main_has_alpha, + int x, int y, + int is_straight, + int jobnr, + int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + const int src_w = src->width; + const int src_h = src->height; + const int dst_w = dst->width; + const int dst_h = dst->height; + + blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 0, 0, 0, x, y, main_has_alpha, + s->main_desc->comp[1].plane, s->main_desc->comp[1].offset, s->main_desc->comp[1].step, is_straight, 0, + jobnr, nb_jobs); + blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 1, hsub, vsub, x, y, main_has_alpha, + s->main_desc->comp[2].plane, s->main_desc->comp[2].offset, s->main_desc->comp[2].step, is_straight, 0, + jobnr, nb_jobs); + blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 2, hsub, vsub, x, y, main_has_alpha, + s->main_desc->comp[0].plane, s->main_desc->comp[0].offset, s->main_desc->comp[0].step, is_straight, 0, + jobnr, nb_jobs); + + if (main_has_alpha) + alpha_composite_8_8bits(src, dst, src_w, src_h, dst_w, dst_h, x, y, jobnr, nb_jobs); +} + +static int blend_slice_yuv420(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 1, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva420(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 1, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv420p10(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_16_10bits(ctx, td->dst, td->src, 1, 1, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva420p10(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_16_10bits(ctx, td->dst, td->src, 1, 1, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv422p10(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_16_10bits(ctx, td->dst, td->src, 1, 0, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva422p10(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_16_10bits(ctx, td->dst, td->src, 1, 0, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv422(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 0, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva422(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 0, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv444(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 0, 0, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva444(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 0, 0, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_gbrp(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_planar_rgb(ctx, td->dst, td->src, 0, 0, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_gbrap(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_planar_rgb(ctx, td->dst, td->src, 0, 0, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv420_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 1, 0, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva420_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 1, 1, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv422_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 0, 0, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva422_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 1, 0, 1, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuv444_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 0, 0, 0, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_yuva444_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_yuv_8_8bits(ctx, td->dst, td->src, 0, 0, 1, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_gbrp_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_planar_rgb(ctx, td->dst, td->src, 0, 0, 0, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_gbrap_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_planar_rgb(ctx, td->dst, td->src, 0, 0, 1, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_rgb(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_packed_rgb(ctx, td->dst, td->src, 0, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_rgba(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_packed_rgb(ctx, td->dst, td->src, 1, s->x, s->y, 1, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_rgb_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_packed_rgb(ctx, td->dst, td->src, 0, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int blend_slice_rgba_pm(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) +{ + OverlaySubsContext *s = ctx->priv; + ThreadData *td = arg; + blend_slice_packed_rgb(ctx, td->dst, td->src, 1, s->x, s->y, 0, jobnr, nb_jobs); + return 0; +} + +static int config_input_main(AVFilterLink *inlink) +{ + OverlaySubsContext *s = inlink->dst->priv; + const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format); + + av_image_fill_max_pixsteps(s->main_pix_step, NULL, pix_desc); + + s->hsub = pix_desc->log2_chroma_w; + s->vsub = pix_desc->log2_chroma_h; + + s->main_desc = pix_desc; + + s->main_is_packed_rgb = + ff_fill_rgba_map(s->main_rgba_map, inlink->format) >= 0; + s->main_has_alpha = ff_fmt_is_in(inlink->format, alpha_pix_fmts); + + switch (s->format) { + case OVERLAY_FORMAT_YUV420: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva420 : blend_slice_yuv420; + break; + case OVERLAY_FORMAT_YUV420P10: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva420p10 : blend_slice_yuv420p10; + break; + case OVERLAY_FORMAT_YUV422: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva422 : blend_slice_yuv422; + break; + case OVERLAY_FORMAT_YUV422P10: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva422p10 : blend_slice_yuv422p10; + break; + case OVERLAY_FORMAT_YUV444: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva444 : blend_slice_yuv444; + break; + case OVERLAY_FORMAT_RGB: + s->blend_slice = s->main_has_alpha ? blend_slice_rgba : blend_slice_rgb; + break; + case OVERLAY_FORMAT_GBRP: + s->blend_slice = s->main_has_alpha ? blend_slice_gbrap : blend_slice_gbrp; + break; + case OVERLAY_FORMAT_AUTO: + switch (inlink->format) { + case AV_PIX_FMT_YUVA420P: + s->blend_slice = blend_slice_yuva420; + break; + case AV_PIX_FMT_YUVA420P10: + s->blend_slice = blend_slice_yuva420p10; + break; + case AV_PIX_FMT_YUVA422P: + s->blend_slice = blend_slice_yuva422; + break; + case AV_PIX_FMT_YUVA422P10: + s->blend_slice = blend_slice_yuva422p10; + break; + case AV_PIX_FMT_YUVA444P: + s->blend_slice = blend_slice_yuva444; + break; + case AV_PIX_FMT_ARGB: + case AV_PIX_FMT_RGBA: + case AV_PIX_FMT_BGRA: + case AV_PIX_FMT_ABGR: + s->blend_slice = blend_slice_rgba; + break; + case AV_PIX_FMT_GBRAP: + s->blend_slice = blend_slice_gbrap; + break; + default: + av_assert0(0); + break; + } + break; + } + + if (!s->alpha_format) + goto end; + + switch (s->format) { + case OVERLAY_FORMAT_YUV420: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva420_pm : blend_slice_yuv420_pm; + break; + case OVERLAY_FORMAT_YUV422: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva422_pm : blend_slice_yuv422_pm; + break; + case OVERLAY_FORMAT_YUV444: + s->blend_slice = s->main_has_alpha ? blend_slice_yuva444_pm : blend_slice_yuv444_pm; + break; + case OVERLAY_FORMAT_RGB: + s->blend_slice = s->main_has_alpha ? blend_slice_rgba_pm : blend_slice_rgb_pm; + break; + case OVERLAY_FORMAT_GBRP: + s->blend_slice = s->main_has_alpha ? blend_slice_gbrap_pm : blend_slice_gbrp_pm; + break; + case OVERLAY_FORMAT_AUTO: + switch (inlink->format) { + case AV_PIX_FMT_YUVA420P: + s->blend_slice = blend_slice_yuva420_pm; + break; + case AV_PIX_FMT_YUVA422P: + s->blend_slice = blend_slice_yuva422_pm; + break; + case AV_PIX_FMT_YUVA444P: + s->blend_slice = blend_slice_yuva444_pm; + break; + case AV_PIX_FMT_ARGB: + case AV_PIX_FMT_RGBA: + case AV_PIX_FMT_BGRA: + case AV_PIX_FMT_ABGR: + s->blend_slice = blend_slice_rgba_pm; + break; + case AV_PIX_FMT_GBRAP: + s->blend_slice = blend_slice_gbrap_pm; + break; + default: + av_assert0(0); + break; + } + break; + } + +end: + if (ARCH_X86) + ff_overlay_init_x86(s, s->format, inlink->format, + s->alpha_format, s->main_has_alpha); + + return 0; +} + +static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h, + AVSubtitleRect *r) +{ + uint32_t *pal, *dst2; + uint8_t *src, *src2; + int x, y; + + // hack: + ////if (r->y > 600) + //// r->y = r->y - 300; + + if (r->type != SUBTITLE_BITMAP) { + av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n"); + return; + } + if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) { + av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n", + r->x, r->y, r->w, r->h, w, h + ); + return; + } + + dst += r->y * dst_linesize + r->x * 4; + src = r->data[0]; + pal = (uint32_t *)r->data[1]; + for (y = 0; y < r->h; y++) { + dst2 = (uint32_t *)dst; + src2 = src; + for (x = 0; x < r->w; x++) + *(dst2++) = pal[*(src2++)]; + dst += dst_linesize; + src += r->linesize[0]; + } +} + +static int do_blend(FFFrameSync *fs) +{ + AVFilterContext *ctx = fs->parent; + AVFrame *mainpic, *second; + OverlaySubsContext *s = ctx->priv; + AVFilterLink *inlink = ctx->inputs[0]; + int ret; + + ret = ff_framesync_dualinput_get_writable(fs, &mainpic, &second); + if (ret < 0) + return ret; + if (!second) + return ff_filter_frame(ctx->outputs[0], mainpic); + + if (s->eval_mode == EVAL_MODE_FRAME) { + int64_t pos = mainpic->pkt_pos; + + s->var_values[VAR_N] = inlink->frame_count_out; + s->var_values[VAR_T] = mainpic->pts == AV_NOPTS_VALUE ? + NAN : mainpic->pts * av_q2d(inlink->time_base); + s->var_values[VAR_POS] = pos == -1 ? NAN : pos; + + s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = second->width; + s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = second->height; + s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = mainpic->width; + s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = mainpic->height; + + eval_expr(ctx); + av_log(ctx, AV_LOG_DEBUG, "n:%f t:%f pos:%f x:%f xi:%d y:%f yi:%d\n", + s->var_values[VAR_N], s->var_values[VAR_T], s->var_values[VAR_POS], + s->var_values[VAR_X], s->x, + s->var_values[VAR_Y], s->y); + } + + if (second->buf[0] && second->buf[0]->data) { + + AVSubtitle *sub = (AVSubtitle *)second->buf[0]->data; + uint8_t *dst; + int dst_linesize; + int num_rects, i; + + num_rects = sub->num_rects; + dst = mainpic->data[0]; + dst_linesize = mainpic->linesize[0]; + + for (i = 0; i < num_rects; i++) { + AVSubtitleRect *sub_rect = sub->rects[i]; + + sub_rect->y += s->y; + sub_rect->x += s->x; + + sub2video_copy_rect(dst, dst_linesize, mainpic->width, mainpic->height, sub_rect); + + sub_rect->y -= s->y; + sub_rect->x -= s->x; + continue; + + if (sub_rect->x < 0 || sub_rect->x + sub_rect->w > mainpic->width || sub_rect->y < 0 || sub_rect->y + sub_rect->h > mainpic->height) { + av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle (%d %d %d %d) overflowing %d %d\n", + sub_rect->x, sub_rect->y, sub_rect->w, sub_rect->h, mainpic->width, mainpic->height + ); + + sub_rect->y -= s->y; + sub_rect->x -= s->x; + + continue; + } + + if (sub_rect->x < mainpic->width && sub_rect->x + sub_rect->w >= 0 && + sub_rect->y < mainpic->height && sub_rect->y + sub_rect->h >= 0) { + ThreadData td; + + td.dst = mainpic; + td.src = sub_rect; + ctx->internal->execute(ctx, s->blend_slice, &td, NULL, FFMIN(FFMAX(1, FFMIN3(sub_rect->y + sub_rect->h, FFMIN(sub_rect->h, mainpic->height), mainpic->height - sub_rect->y)), + ff_filter_get_nb_threads(ctx))); + } + + sub_rect->y -= s->y; + sub_rect->x -= s->x; + } + } + + return ff_filter_frame(ctx->outputs[0], mainpic); +} + +static av_cold int init(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + + s->fs.on_event = do_blend; + return 0; +} + +static int activate(AVFilterContext *ctx) +{ + OverlaySubsContext *s = ctx->priv; + return ff_framesync_activate(&s->fs); +} + +#define OFFSET(x) offsetof(OverlaySubsContext, x) +#define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM + +static const AVOption overlay_subs_options[] = { + { "x", "set the x expression", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, FLAGS }, + { "y", "set the y expression", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, FLAGS }, + { "eof_action", "Action to take when encountering EOF from secondary input ", + OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT }, + EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, "eof_action" }, + { "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, "eof_action" }, + { "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, "eof_action" }, + { "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, "eof_action" }, + { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_FRAME}, 0, EVAL_MODE_NB-1, FLAGS, "eval" }, + { "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" }, + { "frame", "eval expressions per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" }, + { "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS }, + { "format", "set output format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=OVERLAY_FORMAT_YUV420}, 0, OVERLAY_FORMAT_NB-1, FLAGS, "format" }, + { "yuv420", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420}, .flags = FLAGS, .unit = "format" }, + { "yuv420p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420P10}, .flags = FLAGS, .unit = "format" }, + { "yuv422", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422}, .flags = FLAGS, .unit = "format" }, + { "yuv422p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422P10}, .flags = FLAGS, .unit = "format" }, + { "yuv444", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV444}, .flags = FLAGS, .unit = "format" }, + { "rgb", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_RGB}, .flags = FLAGS, .unit = "format" }, + { "gbrp", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_GBRP}, .flags = FLAGS, .unit = "format" }, + { "auto", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_AUTO}, .flags = FLAGS, .unit = "format" }, + { "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS }, + { "alpha", "alpha format", OFFSET(alpha_format), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, "alpha_format" }, + { "straight", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, .flags = FLAGS, .unit = "alpha_format" }, + { "premultiplied", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, .flags = FLAGS, .unit = "alpha_format" }, + { NULL } +}; + +FRAMESYNC_DEFINE_CLASS(overlay_subs, OverlaySubsContext, fs); + +static const AVFilterPad avfilter_vf_overlay_inputs[] = { + { + .name = "main", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_input_main, + }, + { + .name = "overlay", + .type = AVMEDIA_TYPE_SUBTITLE, + .config_props = config_input_overlay, + }, + { NULL } +}; + +static const AVFilterPad avfilter_vf_overlay_outputs[] = { + { + .name = "default", + .type = AVMEDIA_TYPE_VIDEO, + .config_props = config_output, + }, + { NULL } +}; + +const AVFilter ff_vf_overlay_subs = { + .name = "overlay_subs", + .description = NULL_IF_CONFIG_SMALL("Overlay graphical subtitles on top of the input."), + .preinit = overlay_subs_framesync_preinit, + .init = init, + .uninit = uninit, + .priv_size = sizeof(OverlaySubsContext), + .priv_class = &overlay_subs_class, + .query_formats = query_formats, + .activate = activate, + .process_command = process_command, + .inputs = avfilter_vf_overlay_inputs, + .outputs = avfilter_vf_overlay_outputs, + .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | + AVFILTER_FLAG_SLICE_THREADS, +}; diff --git a/libavfilter/vf_overlay_subs.h b/libavfilter/vf_overlay_subs.h new file mode 100644 index 0000000000..f3d0e0353b --- /dev/null +++ b/libavfilter/vf_overlay_subs.h @@ -0,0 +1,88 @@ +/* + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef AVFILTER_OVERLAY_SUBS_H +#define AVFILTER_OVERLAY_SUBS_H + +#include "libavutil/eval.h" +#include "libavutil/pixdesc.h" +#include "framesync.h" +#include "avfilter.h" + +enum var_name { + VAR_MAIN_W, VAR_MW, + VAR_MAIN_H, VAR_MH, + VAR_OVERLAY_W, VAR_OW, + VAR_OVERLAY_H, VAR_OH, + VAR_HSUB, + VAR_VSUB, + VAR_X, + VAR_Y, + VAR_N, + VAR_POS, + VAR_T, + VAR_VARS_NB +}; + +enum OverlayFormat { + OVERLAY_FORMAT_YUV420, + OVERLAY_FORMAT_YUV420P10, + OVERLAY_FORMAT_YUV422, + OVERLAY_FORMAT_YUV422P10, + OVERLAY_FORMAT_YUV444, + OVERLAY_FORMAT_RGB, + OVERLAY_FORMAT_GBRP, + OVERLAY_FORMAT_AUTO, + OVERLAY_FORMAT_NB +}; + +typedef struct OverlaySubsContext { + const AVClass *class; + int x, y; ///< position of overlaid picture + + uint8_t main_is_packed_rgb; + uint8_t main_rgba_map[4]; + uint8_t main_has_alpha; + uint8_t overlay_is_packed_rgb; + uint8_t overlay_rgba_map[4]; + uint8_t overlay_has_alpha; + int format; ///< OverlayFormat + int alpha_format; + int eval_mode; ///< EvalMode + + FFFrameSync fs; + + int main_pix_step[4]; ///< steps per pixel for each plane of the main output + int overlay_pix_step[4]; ///< steps per pixel for each plane of the overlay + int hsub, vsub; ///< chroma subsampling values + const AVPixFmtDescriptor *main_desc; ///< format descriptor for main input + + double var_values[VAR_VARS_NB]; + char *x_expr, *y_expr; + + AVExpr *x_pexpr, *y_pexpr; + + int (*blend_row[4])(uint8_t *d, uint8_t *da, uint8_t *s, uint8_t *a, int w, + ptrdiff_t alinesize); + int (*blend_slice)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs); +} OverlaySubsContext; + +void ff_overlay_init_x86(OverlaySubsContext *s, int format, int pix_format, + int alpha_format, int main_has_alpha); + +#endif /* AVFILTER_OVERLAY_SUBS_H */