* PGS subtitle decoder
* Copyright (c) 2009 Stephen Backway
*
- * This file is part of FFmpeg.
+ * This file is part of Libav.
*
- * FFmpeg is free software; you can redistribute it and/or
+ * Libav 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,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "dsputil.h"
#include "bytestream.h"
#include "libavutil/colorspace.h"
-#include "libavcore/imgutils.h"
-
-//#define DEBUG_PACKET_CONTENTS
+#include "libavutil/imgutils.h"
#define RGBA(r,g,b,a) (((a) << 24) | ((r) << 16) | ((g) << 8) | (b))
int y;
int id_number;
int object_number;
+ uint8_t composition_flag;
+ int64_t pts;
} PGSSubPresentation;
typedef struct PGSSubPicture {
static av_cold int init_decoder(AVCodecContext *avctx)
{
- avctx->pix_fmt = PIX_FMT_PAL8;
+ avctx->pix_fmt = AV_PIX_FMT_PAL8;
return 0;
}
return -1;
}
- dprintf(avctx, "Pixel Count = %d, Area = %d\n", pixel_count, sub->rects[0]->w * sub->rects[0]->h);
+ av_dlog(avctx, "Pixel Count = %d, Area = %d\n", pixel_count, sub->rects[0]->w * sub->rects[0]->h);
return 0;
}
memcpy(ctx->picture.rle + ctx->picture.rle_data_len, buf, buf_size);
ctx->picture.rle_data_len += buf_size;
+ ctx->picture.rle_remaining_len -= buf_size;
return 0;
}
/* Make sure the bitmap is not too large */
if (avctx->width < width || avctx->height < height) {
- av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger then video.\n");
+ av_log(avctx, AV_LOG_ERROR, "Bitmap dimensions larger than video.\n");
return -1;
}
while (buf < buf_end) {
color_id = bytestream_get_byte(&buf);
y = bytestream_get_byte(&buf);
- cb = bytestream_get_byte(&buf);
cr = bytestream_get_byte(&buf);
+ cb = bytestream_get_byte(&buf);
alpha = bytestream_get_byte(&buf);
YUV_TO_RGB1(cb, cr);
YUV_TO_RGB2(r, g, b, y);
- dprintf(avctx, "Color %d := (%d,%d,%d,%d)\n", color_id, r, g, b, alpha);
+ av_dlog(avctx, "Color %d := (%d,%d,%d,%d)\n", color_id, r, g, b, alpha);
/* Store color in palette */
ctx->clut[color_id] = RGBA(r,g,b,alpha);
* @todo TODO: Implement forcing of subtitles
*/
static void parse_presentation_segment(AVCodecContext *avctx,
- const uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size,
+ int64_t pts)
{
PGSSubContext *ctx = avctx->priv_data;
int w = bytestream_get_be16(&buf);
int h = bytestream_get_be16(&buf);
- dprintf(avctx, "Video Dimensions %dx%d\n",
+ ctx->presentation.pts = pts;
+
+ av_dlog(avctx, "Video Dimensions %dx%d\n",
w, h);
if (av_image_check_size(w, h, 0, avctx) >= 0)
avcodec_set_dimensions(avctx, w, h);
buf += 3;
ctx->presentation.object_number = bytestream_get_byte(&buf);
+ ctx->presentation.composition_flag = 0;
if (!ctx->presentation.object_number)
return;
/*
- * Skip 4 bytes of unknown:
+ * Skip 3 bytes of unknown:
* object_id_ref (2 bytes),
* window_id_ref,
- * composition_flag (0x80 - object cropped, 0x40 - object forced)
*/
- buf += 4;
+ buf += 3;
+ ctx->presentation.composition_flag = bytestream_get_byte(&buf);
x = bytestream_get_be16(&buf);
y = bytestream_get_be16(&buf);
/* TODO If cropping, cropping_x, cropping_y, cropping_width, cropping_height (all 2 bytes).*/
- dprintf(avctx, "Subtitle Placement x=%d, y=%d\n", x, y);
+ av_dlog(avctx, "Subtitle Placement x=%d, y=%d\n", x, y);
if (x > avctx->width || y > avctx->height) {
av_log(avctx, AV_LOG_ERROR, "Subtitle out of video bounds. x = %d, y = %d, video width = %d, video height = %d.\n",
*/
memset(sub, 0, sizeof(*sub));
+ sub->pts = ctx->presentation.pts;
+
// Blank if last object_number was 0.
// Note that this may be wrong for more complex subtitles.
if (!ctx->presentation.object_number)
sub->rects[0] = av_mallocz(sizeof(*sub->rects[0]));
sub->num_rects = 1;
+ if (ctx->presentation.composition_flag & 0x40)
+ sub->rects[0]->flags |= AV_SUBTITLE_FLAG_FORCED;
+
sub->rects[0]->x = ctx->presentation.x;
sub->rects[0]->y = ctx->presentation.y;
sub->rects[0]->w = ctx->picture.w;
const uint8_t *buf_end;
uint8_t segment_type;
int segment_length;
-
-#ifdef DEBUG_PACKET_CONTENTS
int i;
- av_log(avctx, AV_LOG_INFO, "PGS sub packet:\n");
+ av_dlog(avctx, "PGS sub packet:\n");
for (i = 0; i < buf_size; i++) {
- av_log(avctx, AV_LOG_INFO, "%02x ", buf[i]);
+ av_dlog(avctx, "%02x ", buf[i]);
if (i % 16 == 15)
- av_log(avctx, AV_LOG_INFO, "\n");
+ av_dlog(avctx, "\n");
}
if (i & 15)
- av_log(avctx, AV_LOG_INFO, "\n");
-#endif
+ av_dlog(avctx, "\n");
*data_size = 0;
segment_type = bytestream_get_byte(&buf);
segment_length = bytestream_get_be16(&buf);
- dprintf(avctx, "Segment Length %d, Segment Type %x\n", segment_length, segment_type);
+ av_dlog(avctx, "Segment Length %d, Segment Type %x\n", segment_length, segment_type);
if (segment_type != DISPLAY_SEGMENT && segment_length > buf_end - buf)
break;
parse_picture_segment(avctx, buf, segment_length);
break;
case PRESENTATION_SEGMENT:
- parse_presentation_segment(avctx, buf, segment_length);
+ parse_presentation_segment(avctx, buf, segment_length, avpkt->pts);
break;
case WINDOW_SEGMENT:
/*
* Window Segment Structure (No new information provided):
- * 2 bytes: Unkown,
+ * 2 bytes: Unknown,
* 2 bytes: X position of subtitle,
* 2 bytes: Y position of subtitle,
* 2 bytes: Width of subtitle,
return buf_size;
}
-AVCodec pgssub_decoder = {
- "pgssub",
- AVMEDIA_TYPE_SUBTITLE,
- CODEC_ID_HDMV_PGS_SUBTITLE,
- sizeof(PGSSubContext),
- init_decoder,
- NULL,
- close_decoder,
- decode,
- .long_name = NULL_IF_CONFIG_SMALL("HDMV Presentation Graphic Stream subtitles"),
+AVCodec ff_pgssub_decoder = {
+ .name = "pgssub",
+ .type = AVMEDIA_TYPE_SUBTITLE,
+ .id = AV_CODEC_ID_HDMV_PGS_SUBTITLE,
+ .priv_data_size = sizeof(PGSSubContext),
+ .init = init_decoder,
+ .close = close_decoder,
+ .decode = decode,
+ .long_name = NULL_IF_CONFIG_SMALL("HDMV Presentation Graphic Stream subtitles"),
};
projects / ffmpeg / blobdiff