/*
* DVB subtitle decoding for ffmpeg
- * Copyright (c) 2005 Ian Caulfield.
+ * Copyright (c) 2005 Ian Caulfield
*
* This file is part of FFmpeg.
*
*/
#include "avcodec.h"
#include "dsputil.h"
-#include "bitstream.h"
+#include "get_bits.h"
#include "colorspace.h"
//#define DEBUG
int x_pos;
int y_pos;
- int fgcolour;
- int bgcolour;
+ int fgcolor;
+ int bgcolor;
struct DVBSubObjectDisplay *region_list_next;
struct DVBSubObjectDisplay *object_list_next;
int depth;
int clut;
- int bgcolour;
+ int bgcolor;
uint8_t *pbuf;
int buf_size;
object = get_object(ctx, display->object_id);
if (object) {
- obj_disp = object->display_list;
obj_disp_ptr = &object->display_list;
+ obj_disp = *obj_disp_ptr;
while (obj_disp && obj_disp != display) {
obj_disp_ptr = &obj_disp->object_list_next;
- obj_disp = obj_disp->object_list_next;
+ obj_disp = *obj_disp_ptr;
}
if (obj_disp) {
*obj_disp_ptr = obj_disp->object_list_next;
if (!object->display_list) {
- obj2 = ctx->object_list;
obj2_ptr = &ctx->object_list;
+ obj2 = *obj2_ptr;
- while (obj2 && obj2 != object) {
+ while (obj2 != object) {
+ assert(obj2);
obj2_ptr = &obj2->next;
- obj2 = obj2->next;
+ obj2 = *obj2_ptr;
}
*obj2_ptr = obj2->next;
av_log(0, AV_LOG_ERROR, "Memory deallocation error!\n");
}
-static int dvbsub_init_decoder(AVCodecContext *avctx)
+static av_cold int dvbsub_init_decoder(AVCodecContext *avctx)
{
int i, r, g, b, a = 0;
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
return 0;
}
-static int dvbsub_close_decoder(AVCodecContext *avctx)
+static av_cold int dvbsub_close_decoder(AVCodecContext *avctx)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
DVBSubRegionDisplay *display;
}
static int dvbsub_read_2bit_string(uint8_t *destbuf, int dbuf_len,
- uint8_t **srcbuf, int buf_size,
+ const uint8_t **srcbuf, int buf_size,
int non_mod, uint8_t *map_table)
{
GetBitContext gb;
int run_length;
int pixels_read = 0;
- init_get_bits(&gb, *srcbuf, buf_size << 8);
+ init_get_bits(&gb, *srcbuf, buf_size << 3);
- while (get_bits_count(&gb) < (buf_size << 8) && pixels_read < dbuf_len) {
+ while (get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) {
bits = get_bits(&gb, 2);
if (bits) {
}
static int dvbsub_read_4bit_string(uint8_t *destbuf, int dbuf_len,
- uint8_t **srcbuf, int buf_size,
+ const uint8_t **srcbuf, int buf_size,
int non_mod, uint8_t *map_table)
{
GetBitContext gb;
int run_length;
int pixels_read = 0;
- init_get_bits(&gb, *srcbuf, buf_size << 8);
+ init_get_bits(&gb, *srcbuf, buf_size << 3);
- while (get_bits_count(&gb) < (buf_size << 8) && pixels_read < dbuf_len) {
+ while (get_bits_count(&gb) < buf_size << 3 && pixels_read < dbuf_len) {
bits = get_bits(&gb, 4);
if (bits) {
}
static int dvbsub_read_8bit_string(uint8_t *destbuf, int dbuf_len,
- uint8_t **srcbuf, int buf_size,
+ const uint8_t **srcbuf, int buf_size,
int non_mod, uint8_t *map_table)
{
- uint8_t *sbuf_end = (*srcbuf) + buf_size;
+ const uint8_t *sbuf_end = (*srcbuf) + buf_size;
int bits;
int run_length;
int pixels_read = 0;
static void dvbsub_parse_pixel_data_block(AVCodecContext *avctx, DVBSubObjectDisplay *display,
- uint8_t *buf, int buf_size, int top_bottom, int non_mod)
+ const uint8_t *buf, int buf_size, int top_bottom, int non_mod)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
DVBSubRegion *region = get_region(ctx, display->region_id);
- uint8_t *buf_end = buf + buf_size;
+ const uint8_t *buf_end = buf + buf_size;
uint8_t *pbuf;
int x_pos, y_pos;
int i;
0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff};
uint8_t *map_table;
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "DVB pixel block size %d, %s field:\n", buf_size,
- top_bottom ? "bottom" : "top");
-#endif
+ dprintf(avctx, "DVB pixel block size %d, %s field:\n", buf_size,
+ top_bottom ? "bottom" : "top");
#ifdef DEBUG_PACKET_CONTENTS
for (i = 0; i < buf_size; i++) {
}
static void dvbsub_parse_object_segment(AVCodecContext *avctx,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
- uint8_t *buf_end = buf + buf_size;
- uint8_t *block;
+ const uint8_t *buf_end = buf + buf_size;
+ const uint8_t *block;
int object_id;
DVBSubObject *object;
DVBSubObjectDisplay *display;
int top_field_len, bottom_field_len;
- int coding_method, non_modifying_colour;
+ int coding_method, non_modifying_color;
object_id = AV_RB16(buf);
buf += 2;
return;
coding_method = ((*buf) >> 2) & 3;
- non_modifying_colour = ((*buf++) >> 1) & 1;
+ non_modifying_color = ((*buf++) >> 1) & 1;
if (coding_method == 0) {
top_field_len = AV_RB16(buf);
block = buf;
dvbsub_parse_pixel_data_block(avctx, display, block, top_field_len, 0,
- non_modifying_colour);
+ non_modifying_color);
if (bottom_field_len > 0)
block = buf + top_field_len;
bottom_field_len = top_field_len;
dvbsub_parse_pixel_data_block(avctx, display, block, bottom_field_len, 1,
- non_modifying_colour);
+ non_modifying_color);
}
/* } else if (coding_method == 1) {*/
}
static void dvbsub_parse_clut_segment(AVCodecContext *avctx,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
- uint8_t *buf_end = buf + buf_size;
+ const uint8_t *buf_end = buf + buf_size;
int clut_id;
DVBSubCLUT *clut;
int entry_id, depth , full_range;
YUV_TO_RGB1_CCIR(cb, cr);
YUV_TO_RGB2_CCIR(r, g, b, y);
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "clut %d := (%d,%d,%d,%d)\n", entry_id, r, g, b, alpha);
-#endif
+ dprintf(avctx, "clut %d := (%d,%d,%d,%d)\n", entry_id, r, g, b, alpha);
if (depth & 0x80)
clut->clut4[entry_id] = RGBA(r,g,b,255 - alpha);
static void dvbsub_parse_region_segment(AVCodecContext *avctx,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
- uint8_t *buf_end = buf + buf_size;
+ const uint8_t *buf_end = buf + buf_size;
int region_id, object_id;
DVBSubRegion *region;
DVBSubObject *object;
region->clut = *buf++;
if (region->depth == 8)
- region->bgcolour = *buf++;
+ region->bgcolor = *buf++;
else {
buf += 1;
if (region->depth == 4)
- region->bgcolour = (((*buf++) >> 4) & 15);
+ region->bgcolor = (((*buf++) >> 4) & 15);
else
- region->bgcolour = (((*buf++) >> 2) & 3);
+ region->bgcolor = (((*buf++) >> 2) & 3);
}
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "Region %d, (%dx%d)\n", region_id, region->width, region->height);
-#endif
+ dprintf(avctx, "Region %d, (%dx%d)\n", region_id, region->width, region->height);
if (fill) {
- memset(region->pbuf, region->bgcolour, region->buf_size);
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "Fill region (%d)\n", region->bgcolour);
-#endif
+ memset(region->pbuf, region->bgcolor, region->buf_size);
+ dprintf(avctx, "Fill region (%d)\n", region->bgcolor);
}
delete_region_display_list(ctx, region);
buf += 2;
if ((object->type == 1 || object->type == 2) && buf+1 < buf_end) {
- display->fgcolour = *buf++;
- display->bgcolour = *buf++;
+ display->fgcolor = *buf++;
+ display->bgcolor = *buf++;
}
display->region_list_next = region->display_list;
}
static void dvbsub_parse_page_segment(AVCodecContext *avctx,
- uint8_t *buf, int buf_size)
+ const uint8_t *buf, int buf_size)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
DVBSubRegionDisplay *display;
DVBSubRegionDisplay *tmp_display_list, **tmp_ptr;
- uint8_t *buf_end = buf + buf_size;
+ const uint8_t *buf_end = buf + buf_size;
int region_id;
int page_state;
ctx->time_out = *buf++;
page_state = ((*buf++) >> 2) & 3;
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "Page time out %ds, state %d\n", ctx->time_out, page_state);
-#endif
+ dprintf(avctx, "Page time out %ds, state %d\n", ctx->time_out, page_state);
if (page_state == 2) {
delete_state(ctx);
ctx->display_list = display;
ctx->display_list_size++;
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "Region %d, (%d,%d)\n", region_id, display->x_pos, display->y_pos);
-#endif
+ dprintf(avctx, "Region %d, (%d,%d)\n", region_id, display->x_pos, display->y_pos);
}
while (tmp_display_list) {
}
#endif
-static int dvbsub_display_end_segment(AVCodecContext *avctx, uint8_t *buf,
+static int dvbsub_display_end_segment(AVCodecContext *avctx, const uint8_t *buf,
int buf_size, AVSubtitle *sub)
{
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
sub->num_rects = ctx->display_list_size;
- if (sub->num_rects > 0)
- sub->rects = av_mallocz(sizeof(AVSubtitleRect) * sub->num_rects);
+ if (sub->num_rects > 0){
+ sub->rects = av_mallocz(sizeof(*sub->rects) * sub->num_rects);
+ for(i=0; i<sub->num_rects; i++)
+ sub->rects[i] = av_mallocz(sizeof(*sub->rects[i]));
+ }
i = 0;
for (display = ctx->display_list; display; display = display->next) {
region = get_region(ctx, display->region_id);
- rect = &sub->rects[i];
+ rect = sub->rects[i];
if (!region)
continue;
rect->w = region->width;
rect->h = region->height;
rect->nb_colors = 16;
- rect->linesize = region->width;
+ rect->type = SUBTITLE_BITMAP;
+ rect->pict.linesize[0] = region->width;
clut = get_clut(ctx, region->clut);
break;
}
- rect->rgba_palette = av_malloc((1 << region->depth) * sizeof(uint32_t));
- memcpy(rect->rgba_palette, clut_table, (1 << region->depth) * sizeof(uint32_t));
+ rect->pict.data[1] = av_mallocz(AVPALETTE_SIZE);
+ memcpy(rect->pict.data[1], clut_table, (1 << region->depth) * sizeof(uint32_t));
- rect->bitmap = av_malloc(region->buf_size);
- memcpy(rect->bitmap, region->pbuf, region->buf_size);
+ rect->pict.data[0] = av_malloc(region->buf_size);
+ memcpy(rect->pict.data[0], region->pbuf, region->buf_size);
i++;
}
static int dvbsub_decode(AVCodecContext *avctx,
void *data, int *data_size,
- uint8_t *buf, int buf_size)
+ AVPacket *avpkt)
{
+ const uint8_t *buf = avpkt->data;
+ int buf_size = avpkt->size;
DVBSubContext *ctx = (DVBSubContext*) avctx->priv_data;
AVSubtitle *sub = (AVSubtitle*) data;
- uint8_t *p, *p_end;
+ const uint8_t *p, *p_end;
int segment_type;
int page_id;
int segment_length;
*data_size = dvbsub_display_end_segment(avctx, p, segment_length, sub);
break;
default:
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "Subtitling segment type 0x%x, page id %d, length %d\n",
+ dprintf(avctx, "Subtitling segment type 0x%x, page id %d, length %d\n",
segment_type, page_id, segment_length);
-#endif
break;
}
}
}
if (p != p_end) {
-#ifdef DEBUG
- av_log(avctx, AV_LOG_INFO, "Junk at end of packet\n");
-#endif
+ dprintf(avctx, "Junk at end of packet\n");
return -1;
}
NULL,
dvbsub_close_decoder,
dvbsub_decode,
+ .long_name = NULL_IF_CONFIG_SMALL("DVB subtitles"),
};