/src/vlc/modules/codec/avcodec/subtitle.c

Source
/*****************************************************************************
 * subtitle.c: subtitle decoder using libavcodec library
 *****************************************************************************
 * Copyright (C) 2009 Laurent Aimar
 *
 * Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
 *
 * This program 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.
 *
 * This program 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 this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
 *****************************************************************************/

/*****************************************************************************
 * Preamble
 *****************************************************************************/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>

#include <vlc_common.h>
#include <vlc_codec.h>
#include <vlc_avcodec.h>

#include <libavcodec/avcodec.h>
#include <libavutil/mem.h>
#include <libavutil/opt.h>

#include "avcodec.h"

typedef struct
{
    AVCodecContext *p_context;
    const AVCodec  *p_codec;
    bool b_need_ephemer; /* Does the format need the ephemer flag (no end time set) */
} decoder_sys_t;

static subpicture_t *ConvertSubtitle(decoder_t *, AVSubtitle *, vlc_tick_t pts,
                                     AVCodecContext *avctx);
static int  DecodeSubtitle(decoder_t *, block_t *);
static void Flush(decoder_t *);

/**
 * Initialize subtitle decoder
 */
int InitSubtitleDec(vlc_object_t *obj)
{
    decoder_t *dec = (decoder_t *)obj;
    const AVCodec *codec;
    AVCodecContext *context = ffmpeg_AllocContext(dec, &codec, false);
    if (context == NULL)
        return VLC_EGENERIC;

    decoder_sys_t *sys;

    /* */
    switch (codec->id) {
    case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
        /* a track marked forced shows only its forced captions */
        if (dec->fmt_in->subs.b_forced) {
            av_opt_set_int(context->priv_data, "forced_subs_only", 1, 0);
        }
        break;
    case AV_CODEC_ID_XSUB:
    case AV_CODEC_ID_DVB_SUBTITLE:
        break;
    default:
        msg_Warn(dec, "refusing to decode non validated subtitle codec");
        avcodec_free_context(&context);
        return VLC_EGENERIC;
    }

    /* */
    dec->p_sys = sys = malloc(sizeof(*sys));
    if (unlikely(sys == NULL))
    {
        avcodec_free_context(&context);
        return VLC_ENOMEM;
    }

    sys->p_context = context;
    sys->p_codec = codec;
    sys->b_need_ephemer = codec->id == AV_CODEC_ID_HDMV_PGS_SUBTITLE;

    /* */
    context->extradata_size = 0;
    context->extradata = NULL;

    if( codec->id == AV_CODEC_ID_DVB_SUBTITLE )
    {
        if( dec->fmt_in->i_extra > 3 )
        {
            context->extradata = malloc( dec->fmt_in->i_extra );
            if( context->extradata )
            {
                context->extradata_size = dec->fmt_in->i_extra;
                memcpy( context->extradata, dec->fmt_in->p_extra, dec->fmt_in->i_extra );
            }
        }
        else
        {
            context->extradata = malloc( 4 );
            if( context->extradata )
            {
                context->extradata_size = 4;
                SetWBE( &context->extradata[0], dec->fmt_in->subs.dvb.i_id & 0xFFFF );
                SetWBE( &context->extradata[2], dec->fmt_in->subs.dvb.i_id >> 16 );
            }
        }
    }

    context->pkt_timebase=AV_TIME_BASE_Q;

    /* */
    int ret;
    char *psz_opts = var_InheritString(dec, "avcodec-options");
    AVDictionary *options = NULL;
    if (psz_opts) {
        vlc_av_get_options(psz_opts, &options);
        free(psz_opts);
    }

    vlc_avcodec_lock();
    ret = avcodec_open2(context, codec, options ? &options : NULL);
    vlc_avcodec_unlock();

    AVDictionaryEntry *t = NULL;
    while ((t = av_dict_get(options, "", t, AV_DICT_IGNORE_SUFFIX))) {
        msg_Err(dec, "Unknown option \"%s\"", t->key);
    }
    av_dict_free(&options);

    if (ret < 0) {
        msg_Err(dec, "cannot open codec (%s)", codec->name);
        free(sys);
        avcodec_free_context(&context);
        return VLC_EGENERIC;
    }

    /* */
    msg_Dbg(dec, "libavcodec codec (%s) started", codec->name);
    dec->pf_decode = DecodeSubtitle;
    dec->pf_flush  = Flush;

    return VLC_SUCCESS;
}

void EndSubtitleDec(vlc_object_t *obj)
{
    decoder_t *dec = (decoder_t *)obj;
    decoder_sys_t *sys = dec->p_sys;
    AVCodecContext *ctx = sys->p_context;

    avcodec_free_context(&ctx);
    free(sys);
}

/**
 * Flush
 */
static void Flush(decoder_t *dec)
{
    decoder_sys_t *sys = dec->p_sys;

    avcodec_flush_buffers(sys->p_context);
}

/**
 * Decode one subtitle
 */
static subpicture_t *DecodeBlock(decoder_t *dec, block_t **block_ptr)
{
    decoder_sys_t *sys = dec->p_sys;

    if (!block_ptr || !*block_ptr)
        return NULL;

    block_t *block = *block_ptr;

    if (block->i_flags & (BLOCK_FLAG_DISCONTINUITY | BLOCK_FLAG_CORRUPTED)) {
        if (block->i_flags & BLOCK_FLAG_CORRUPTED) {
            Flush(dec);
            block_Release(block);
            return NULL;
        }
    }

    if (block->i_buffer <= 0) {
        block_Release(block);
        return NULL;
    }

    *block_ptr =
    block      = block_Realloc(block,
                               0,
                               block->i_buffer + AV_INPUT_BUFFER_PADDING_SIZE);
    if (!block)
        return NULL;
    block->i_buffer -= AV_INPUT_BUFFER_PADDING_SIZE;
    memset(&block->p_buffer[block->i_buffer], 0, AV_INPUT_BUFFER_PADDING_SIZE);

    if( sys->p_codec->id == AV_CODEC_ID_DVB_SUBTITLE && block->i_buffer > 3 )
    {
        block->p_buffer += 2; /* drop data identifier / stream id */
        block->i_buffer -= 3; /* drop 0x3F/FF */
    }

    /* */
    AVSubtitle subtitle;
    memset(&subtitle, 0, sizeof(subtitle));

    AVPacket *pkt = av_packet_alloc();
    if(!pkt)
    {
        block_Release(block);
        return NULL;
    }
    pkt->data = block->p_buffer;
    pkt->size = block->i_buffer;
    pkt->pts  = TO_AV_TS(block->i_pts);

    int has_subtitle = 0;
    int used = avcodec_decode_subtitle2(sys->p_context,
                                        &subtitle, &has_subtitle, pkt);

    av_packet_free(&pkt);
    if (used < 0) {
        msg_Warn(dec, "cannot decode one subtitle (%zu bytes)",
                 block->i_buffer);

        block_Release(block);
        return NULL;
    } else if ((size_t)used > block->i_buffer) {
        used = block->i_buffer;
    }

    block->i_buffer -= used;
    block->p_buffer += used;

    /* */
    subpicture_t *spu = NULL;
    if (has_subtitle)
        spu = ConvertSubtitle(dec, &subtitle,
                              FROM_AV_TS(subtitle.pts),
                              sys->p_context);

    /* */
    if (!spu)
        block_Release(block);
    return spu;
}

static int DecodeSubtitle(decoder_t *dec, block_t *block)
{
    block_t **block_ptr = block ? &block : NULL;
    subpicture_t *spu;
    while ((spu = DecodeBlock(dec, block_ptr)) != NULL)
        decoder_QueueSub(dec, spu);
    return VLCDEC_SUCCESS;
}

/**
 * Convert a RGBA libavcodec region to our format.
 */
static subpicture_region_t *ConvertRegionRGBA(AVSubtitleRect *ffregion)
{
    if (ffregion->w <= 0 || ffregion->h <= 0)
        return NULL;

    video_format_t fmt;
    memset(&fmt, 0, sizeof(fmt));
    fmt.i_chroma         = VLC_CODEC_RGBA;
    fmt.i_width          =
    fmt.i_visible_width  = ffregion->w;
    fmt.i_height         =
    fmt.i_visible_height = ffregion->h;
    fmt.i_x_offset       = 0;
    fmt.i_y_offset       = 0;

    subpicture_region_t *region = subpicture_region_New(&fmt);
    if (!region)
        return NULL;

    region->b_absolute = true; region->b_in_window = false; /* We have offset and size for subtitle */
    region->i_x = ffregion->x;
    region->i_y = ffregion->y;
    region->i_align = SUBPICTURE_ALIGN_TOP | SUBPICTURE_ALIGN_LEFT;

    const plane_t *p = &region->p_picture->p[0];
    for (int y = 0; y < ffregion->h; y++) {
        for (int x = 0; x < ffregion->w; x++) {
            /* I don't think don't have paletized RGB_A_ */
            const uint8_t index = ffregion->data[0][y * ffregion->w+x];
            assert(index < ffregion->nb_colors);

            uint32_t color;
            memcpy(&color, &ffregion->data[1][4*index], 4);

            uint8_t *p_rgba = &p->p_pixels[y * p->i_pitch + x * p->i_pixel_pitch];
            p_rgba[0] = (color >> 16) & 0xff;
            p_rgba[1] = (color >>  8) & 0xff;
            p_rgba[2] = (color >>  0) & 0xff;
            p_rgba[3] = (color >> 24) & 0xff;
        }
    }

    return region;
}

/**
 * Convert a libavcodec subtitle to our format.
 */
static subpicture_t *ConvertSubtitle(decoder_t *dec, AVSubtitle *ffsub, vlc_tick_t pts,
                                     AVCodecContext *avctx)
{
    subpicture_t *spu = decoder_NewSubpicture(dec, NULL);
    if (!spu)
        return NULL;

    decoder_sys_t *p_sys = dec->p_sys;

    //msg_Err(dec, "%lld %d %d",
    //        pts, ffsub->start_display_time, ffsub->end_display_time);
    spu->i_start    = pts + VLC_TICK_FROM_MS(ffsub->start_display_time);
    spu->i_stop     = pts + VLC_TICK_FROM_MS(ffsub->end_display_time);
    spu->b_ephemer  = p_sys->b_need_ephemer;
                    /* We only show subtitle for i_stop time only */

    if (avctx->coded_width > 0 && avctx->coded_height > 0) {
        spu->i_original_picture_width = avctx->coded_width;
        spu->i_original_picture_height = avctx->coded_height;
    } else {
        spu->i_original_picture_width =
            dec->fmt_in->subs.spu.i_original_frame_width;
        spu->i_original_picture_height =
            dec->fmt_in->subs.spu.i_original_frame_height;
    }

    for (unsigned i = 0; i < ffsub->num_rects; i++) {
        AVSubtitleRect *rec = ffsub->rects[i];

        //msg_Err(dec, "SUBS RECT[%d]: %dx%d @%dx%d",
        //         i, rec->w, rec->h, rec->x, rec->y);

        subpicture_region_t *region = NULL;
        switch (ffsub->format) {
        case 0:
            region = ConvertRegionRGBA(rec);
            break;
        default:
            msg_Warn(dec, "unsupported subtitle type %" PRIu16, ffsub->format);
            break;
        }
        if (region) {
            vlc_spu_regions_push(&spu->regions, region);
        }
    }
    avsubtitle_free(ffsub);

    return spu;
}

Coverage Report

Created: 2026-08-14 07:16

Line	Count	Source
1		/*****************************************************************************
2		* subtitle.c: subtitle decoder using libavcodec library
3		*****************************************************************************
4		* Copyright (C) 2009 Laurent Aimar
5		*
6		* Authors: Laurent Aimar <fenrir _AT_ videolan _DOT_ org>
7		*
8		* This program is free software; you can redistribute it and/or modify it
9		* under the terms of the GNU Lesser General Public License as published by
10		* the Free Software Foundation; either version 2.1 of the License, or
11		* (at your option) any later version.
12		*
13		* This program is distributed in the hope that it will be useful,
14		* but WITHOUT ANY WARRANTY; without even the implied warranty of
15		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16		* GNU Lesser General Public License for more details.
17		*
18		* You should have received a copy of the GNU Lesser General Public License
19		* along with this program; if not, write to the Free Software Foundation,
20		* Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
21		*****************************************************************************/
22
23		/*****************************************************************************
24		* Preamble
25		*****************************************************************************/
26		#ifdef HAVE_CONFIG_H
27		# include "config.h"
28		#endif
29		#include <assert.h>
30
31		#include <vlc_common.h>
32		#include <vlc_codec.h>
33		#include <vlc_avcodec.h>
34
35		#include <libavcodec/avcodec.h>
36		#include <libavutil/mem.h>
37		#include <libavutil/opt.h>
38
39		#include "avcodec.h"
40
41		typedef struct
42		{
43		AVCodecContext *p_context;
44		const AVCodec *p_codec;
45		bool b_need_ephemer; /* Does the format need the ephemer flag (no end time set) */
46		} decoder_sys_t;
47
48		static subpicture_t ConvertSubtitle(decoder_t , AVSubtitle *, vlc_tick_t pts,
49		AVCodecContext *avctx);
50		static int DecodeSubtitle(decoder_t , block_t );
51		static void Flush(decoder_t *);
52
53		/**
54		* Initialize subtitle decoder
55		*/
56		int InitSubtitleDec(vlc_object_t *obj)
57	17.6k	{
58	17.6k	decoder_t dec = (decoder_t )obj;
59	17.6k	const AVCodec *codec;
60	17.6k	AVCodecContext *context = ffmpeg_AllocContext(dec, &codec, false);
61	17.6k	if (context == NULL)
62	14.2k	return VLC_EGENERIC;
63
64	3.45k	decoder_sys_t *sys;
65
66		/* */
67	3.45k	switch (codec->id) {
68	3	case AV_CODEC_ID_HDMV_PGS_SUBTITLE:
69		/* a track marked forced shows only its forced captions */
70	3	if (dec->fmt_in->subs.b_forced) {
71	0	av_opt_set_int(context->priv_data, "forced_subs_only", 1, 0);
72	0	}
73	3	break;
74	0	case AV_CODEC_ID_XSUB:
75	0	case AV_CODEC_ID_DVB_SUBTITLE:
76	0	break;
77	3.45k	default:
78	3.45k	msg_Warn(dec, "refusing to decode non validated subtitle codec");
79	3.45k	avcodec_free_context(&context);
80	3.45k	return VLC_EGENERIC;
81	3.45k	}
82
83		/* */
84	3	dec->p_sys = sys = malloc(sizeof(*sys));
85	3	if (unlikely(sys == NULL))
86	0	{
87	0	avcodec_free_context(&context);
88	0	return VLC_ENOMEM;
89	0	}
90
91	3	sys->p_context = context;
92	3	sys->p_codec = codec;
93	3	sys->b_need_ephemer = codec->id == AV_CODEC_ID_HDMV_PGS_SUBTITLE;
94
95		/* */
96	3	context->extradata_size = 0;
97	3	context->extradata = NULL;
98
99	3	if( codec->id == AV_CODEC_ID_DVB_SUBTITLE )
100	0	{
101	0	if( dec->fmt_in->i_extra > 3 )
102	0	{
103	0	context->extradata = malloc( dec->fmt_in->i_extra );
104	0	if( context->extradata )
105	0	{
106	0	context->extradata_size = dec->fmt_in->i_extra;
107	0	memcpy( context->extradata, dec->fmt_in->p_extra, dec->fmt_in->i_extra );
108	0	}
109	0	}
110	0	else
111	0	{
112	0	context->extradata = malloc( 4 );
113	0	if( context->extradata )
114	0	{
115	0	context->extradata_size = 4;
116	0	SetWBE( &context->extradata[0], dec->fmt_in->subs.dvb.i_id & 0xFFFF );
117	0	SetWBE( &context->extradata[2], dec->fmt_in->subs.dvb.i_id >> 16 );
118	0	}
119	0	}
120	0	}
121
122	3	context->pkt_timebase=AV_TIME_BASE_Q;
123
124		/* */
125	3	int ret;
126	3	char *psz_opts = var_InheritString(dec, "avcodec-options");
127	3	AVDictionary *options = NULL;
128	3	if (psz_opts) {
129	0	vlc_av_get_options(psz_opts, &options);
130	0	free(psz_opts);
131	0	}
132
133	3	vlc_avcodec_lock();
134	3	ret = avcodec_open2(context, codec, options ? &options : NULL);
135	3	vlc_avcodec_unlock();
136
137	3	AVDictionaryEntry *t = NULL;
138	3	while ((t = av_dict_get(options, "", t, AV_DICT_IGNORE_SUFFIX))) {
139	0	msg_Err(dec, "Unknown option \"%s\"", t->key);
140	0	}
141	3	av_dict_free(&options);
142
143	3	if (ret < 0) {
144	0	msg_Err(dec, "cannot open codec (%s)", codec->name);
145	0	free(sys);
146	0	avcodec_free_context(&context);
147	0	return VLC_EGENERIC;
148	0	}
149
150		/* */
151	3	msg_Dbg(dec, "libavcodec codec (%s) started", codec->name);
152	3	dec->pf_decode = DecodeSubtitle;
153	3	dec->pf_flush = Flush;
154
155	3	return VLC_SUCCESS;
156	3	}
157
158		void EndSubtitleDec(vlc_object_t *obj)
159	3	{
160	3	decoder_t dec = (decoder_t )obj;
161	3	decoder_sys_t *sys = dec->p_sys;
162	3	AVCodecContext *ctx = sys->p_context;
163
164	3	avcodec_free_context(&ctx);
165	3	free(sys);
166	3	}
167
168		/**
169		* Flush
170		*/
171		static void Flush(decoder_t *dec)
172	0	{
173	0	decoder_sys_t *sys = dec->p_sys;
174
175	0	avcodec_flush_buffers(sys->p_context);
176	0	}
177
178		/**
179		* Decode one subtitle
180		*/
181		static subpicture_t DecodeBlock(decoder_t dec, block_t **block_ptr)
182	3	{
183	3	decoder_sys_t *sys = dec->p_sys;
184
185	3	if (!block_ptr \|\| !*block_ptr)
186	3	return NULL;
187
188	0	block_t block = block_ptr;
189
190	0	if (block->i_flags & (BLOCK_FLAG_DISCONTINUITY \| BLOCK_FLAG_CORRUPTED)) {
191	0	if (block->i_flags & BLOCK_FLAG_CORRUPTED) {
192	0	Flush(dec);
193	0	block_Release(block);
194	0	return NULL;
195	0	}
196	0	}
197
198	0	if (block->i_buffer <= 0) {
199	0	block_Release(block);
200	0	return NULL;
201	0	}
202
203	0	*block_ptr =
204	0	block = block_Realloc(block,
205	0	0,
206	0	block->i_buffer + AV_INPUT_BUFFER_PADDING_SIZE);
207	0	if (!block)
208	0	return NULL;
209	0	block->i_buffer -= AV_INPUT_BUFFER_PADDING_SIZE;
210	0	memset(&block->p_buffer[block->i_buffer], 0, AV_INPUT_BUFFER_PADDING_SIZE);
211
212	0	if( sys->p_codec->id == AV_CODEC_ID_DVB_SUBTITLE && block->i_buffer > 3 )
213	0	{
214	0	block->p_buffer += 2; /* drop data identifier / stream id */
215	0	block->i_buffer -= 3; /* drop 0x3F/FF */
216	0	}
217
218		/* */
219	0	AVSubtitle subtitle;
220	0	memset(&subtitle, 0, sizeof(subtitle));
221
222	0	AVPacket *pkt = av_packet_alloc();
223	0	if(!pkt)
224	0	{
225	0	block_Release(block);
226	0	return NULL;
227	0	}
228	0	pkt->data = block->p_buffer;
229	0	pkt->size = block->i_buffer;
230	0	pkt->pts = TO_AV_TS(block->i_pts);
231
232	0	int has_subtitle = 0;
233	0	int used = avcodec_decode_subtitle2(sys->p_context,
234	0	&subtitle, &has_subtitle, pkt);
235
236	0	av_packet_free(&pkt);
237	0	if (used < 0) {
238	0	msg_Warn(dec, "cannot decode one subtitle (%zu bytes)",
239	0	block->i_buffer);
240
241	0	block_Release(block);
242	0	return NULL;
243	0	} else if ((size_t)used > block->i_buffer) {
244	0	used = block->i_buffer;
245	0	}
246
247	0	block->i_buffer -= used;
248	0	block->p_buffer += used;
249
250		/* */
251	0	subpicture_t *spu = NULL;
252	0	if (has_subtitle)
253	0	spu = ConvertSubtitle(dec, &subtitle,
254	0	FROM_AV_TS(subtitle.pts),
255	0	sys->p_context);
256
257		/* */
258	0	if (!spu)
259	0	block_Release(block);
260	0	return spu;
261	0	}
262
263		static int DecodeSubtitle(decoder_t dec, block_t block)
264	3	{
265	3	block_t **block_ptr = block ? &block : NULL;
266	3	subpicture_t *spu;
267	3	while ((spu = DecodeBlock(dec, block_ptr)) != NULL)
268	0	decoder_QueueSub(dec, spu);
269	3	return VLCDEC_SUCCESS;
270	3	}
271
272		/**
273		* Convert a RGBA libavcodec region to our format.
274		*/
275		static subpicture_region_t ConvertRegionRGBA(AVSubtitleRect ffregion)
276	0	{
277	0	if (ffregion->w <= 0 \|\| ffregion->h <= 0)
278	0	return NULL;
279
280	0	video_format_t fmt;
281	0	memset(&fmt, 0, sizeof(fmt));
282	0	fmt.i_chroma = VLC_CODEC_RGBA;
283	0	fmt.i_width =
284	0	fmt.i_visible_width = ffregion->w;
285	0	fmt.i_height =
286	0	fmt.i_visible_height = ffregion->h;
287	0	fmt.i_x_offset = 0;
288	0	fmt.i_y_offset = 0;
289
290	0	subpicture_region_t *region = subpicture_region_New(&fmt);
291	0	if (!region)
292	0	return NULL;
293
294	0	region->b_absolute = true; region->b_in_window = false; /* We have offset and size for subtitle */
295	0	region->i_x = ffregion->x;
296	0	region->i_y = ffregion->y;
297	0	region->i_align = SUBPICTURE_ALIGN_TOP \| SUBPICTURE_ALIGN_LEFT;
298
299	0	const plane_t *p = &region->p_picture->p[0];
300	0	for (int y = 0; y < ffregion->h; y++) {
301	0	for (int x = 0; x < ffregion->w; x++) {
302		/* I don't think don't have paletized RGB_A_ */
303	0	const uint8_t index = ffregion->data[0][y * ffregion->w+x];
304	0	assert(index < ffregion->nb_colors);
305
306	0	uint32_t color;
307	0	memcpy(&color, &ffregion->data[1][4*index], 4);
308
309	0	uint8_t p_rgba = &p->p_pixels[y p->i_pitch + x * p->i_pixel_pitch];
310	0	p_rgba[0] = (color >> 16) & 0xff;
311	0	p_rgba[1] = (color >> 8) & 0xff;
312	0	p_rgba[2] = (color >> 0) & 0xff;
313	0	p_rgba[3] = (color >> 24) & 0xff;
314	0	}
315	0	}
316
317	0	return region;
318	0	}
319
320		/**
321		* Convert a libavcodec subtitle to our format.
322		*/
323		static subpicture_t ConvertSubtitle(decoder_t dec, AVSubtitle *ffsub, vlc_tick_t pts,
324		AVCodecContext *avctx)
325	0	{
326	0	subpicture_t *spu = decoder_NewSubpicture(dec, NULL);
327	0	if (!spu)
328	0	return NULL;
329
330	0	decoder_sys_t *p_sys = dec->p_sys;
331
332		//msg_Err(dec, "%lld %d %d",
333		// pts, ffsub->start_display_time, ffsub->end_display_time);
334	0	spu->i_start = pts + VLC_TICK_FROM_MS(ffsub->start_display_time);
335	0	spu->i_stop = pts + VLC_TICK_FROM_MS(ffsub->end_display_time);
336	0	spu->b_ephemer = p_sys->b_need_ephemer;
337		/* We only show subtitle for i_stop time only */
338
339	0	if (avctx->coded_width > 0 && avctx->coded_height > 0) {
340	0	spu->i_original_picture_width = avctx->coded_width;
341	0	spu->i_original_picture_height = avctx->coded_height;
342	0	} else {
343	0	spu->i_original_picture_width =
344	0	dec->fmt_in->subs.spu.i_original_frame_width;
345	0	spu->i_original_picture_height =
346	0	dec->fmt_in->subs.spu.i_original_frame_height;
347	0	}
348
349	0	for (unsigned i = 0; i < ffsub->num_rects; i++) {
350	0	AVSubtitleRect *rec = ffsub->rects[i];
351
352		//msg_Err(dec, "SUBS RECT[%d]: %dx%d @%dx%d",
353		// i, rec->w, rec->h, rec->x, rec->y);
354
355	0	subpicture_region_t *region = NULL;
356	0	switch (ffsub->format) {
357	0	case 0:
358	0	region = ConvertRegionRGBA(rec);
359	0	break;
360	0	default:
361	0	msg_Warn(dec, "unsupported subtitle type %" PRIu16, ffsub->format);
362	0	break;
363	0	}
364	0	if (region) {
365	0	vlc_spu_regions_push(&spu->regions, region);
366	0	}
367	0	}
368	0	avsubtitle_free(ffsub);
369
370	0	return spu;
371	0	}