#include "internal.h"
#include "mathops.h"
+#define ANSI_MIN_READLINE 509
+
static int xbm_encode_frame(AVCodecContext *avctx, AVPacket *pkt,
const AVFrame *p, int *got_packet)
{
- int i, j, ret, size, linesize;
+ int i, j, l, commas, ret, size, linesize, lineout, rowsout;
uint8_t *ptr, *buf;
- linesize = (avctx->width + 7) / 8;
- size = avctx->height * (linesize * 7 + 2) + 110;
+ linesize = lineout = (avctx->width + 7) / 8;
+ commas = avctx->height * linesize;
+
+ /* ANSI worst case minimum readline is 509 chars. */
+ rowsout = avctx->height;
+ if (lineout > (ANSI_MIN_READLINE / 6)) {
+ lineout = ANSI_MIN_READLINE / 6;
+ rowsout = (commas + lineout - 1) / lineout;
+ }
+
+ size = rowsout * (lineout * 6 + 1) + 106;
if ((ret = ff_alloc_packet2(avctx, pkt, size, 0)) < 0)
return ret;
buf += snprintf(buf, 32, "#define image_width %u\n", avctx->width);
buf += snprintf(buf, 33, "#define image_height %u\n", avctx->height);
- buf += snprintf(buf, 40, "static unsigned char image_bits[] = {\n");
- for (i = 0; i < avctx->height; i++) {
- for (j = 0; j < linesize; j++)
- buf += snprintf(buf, 7, " 0x%02X,", ff_reverse[*ptr++]);
+ buf += snprintf(buf, 39, "static unsigned char image_bits[] = {\n");
+ for (i = 0, l = lineout; i < avctx->height; i++) {
+ for (j = 0; j < linesize; j++) {
+ buf += snprintf(buf, 6, " 0x%02X", ff_reverse[*ptr++]);
+ if (--commas <= 0) {
+ buf += snprintf(buf, 2, "\n");
+ break;
+ }
+ buf += snprintf(buf, 2, ",");
+ if (--l <= 0) {
+ buf += snprintf(buf, 2, "\n");
+ l = lineout;
+ }
+ }
ptr += p->linesize[0] - linesize;
- buf += snprintf(buf, 2, "\n");
}
buf += snprintf(buf, 5, " };\n");
return 0;
}
-AVCodec ff_xbm_encoder = {
+const AVCodec ff_xbm_encoder = {
.name = "xbm",
.long_name = NULL_IF_CONFIG_SMALL("XBM (X BitMap) image"),
.type = AVMEDIA_TYPE_VIDEO,