예제 #1
0
/*
 * mpeg-pes interface
 */
#define MAX_STC_DTS_DIFF (INT64_C(90000 * 30)) /* 30 seconds */
static int graphics_processor_decode_pes(PG_DISPLAY_SET **s, PES_BUFFER **p, int64_t stc)
{
    if (!s) {
        return 0;
    }

    if (*s == NULL) {
        *s = calloc(1, sizeof(PG_DISPLAY_SET));
    }

    while (*p) {

        /* time to decode next segment ? */
        if (stc >= 0 && (*p)->dts > stc) {

            /* filter out values that seem to be incorrect (if stc is not updated) */
            int64_t diff = (*p)->dts - stc;
            if (diff < MAX_STC_DTS_DIFF) {
                GP_TRACE("Segment dts > stc (%"PRId64" > %"PRId64" ; diff %"PRId64")\n",
                         (*p)->dts, stc, diff);
                return 0;
            }
        }

        /* all fragments present ? */
        if (!_join_segment_fragments(*p)) {
            GP_TRACE("splitted segment not complete, waiting for next fragment\n");
            return 0;
        }

        if ((*p)->len <= 2) {
            BD_DEBUG(DBG_DECODE, "segment too short, skipping (%d bytes)\n", (*p)->len);
            pes_buffer_remove(p, *p);
            continue;
        }

        /* decode segment */

        GP_TRACE("Decoding segment, dts %010"PRId64" pts %010"PRId64" len %d\n",
                 (*p)->dts, (*p)->pts, (*p)->len);

        (*s)->complete = 0;

        _decode_segment(*s, *p);

        pes_buffer_remove(p, *p);

        if ((*s)->complete) {
            return 1;
        }

    }

    return 0;
}
예제 #2
0
int graphics_processor_decode_pes(PG_DISPLAY_SET **s, PES_BUFFER **p, int64_t stc)
{
    if (!s) {
        return 0;
    }

    if (*s == NULL) {
        *s = calloc(1, sizeof(PG_DISPLAY_SET));
    }

    (*s)->complete = 0;

    while (*p && !(*s)->complete) {

        /* time to decode next segment ? */
        if (stc >= 0 && (*p)->dts > stc) {
            GP_TRACE("Segment dts > stc (%"PRId64" > %"PRId64" ; diff %"PRId64")\n",
                     (*p)->dts, stc, (*p)->dts - stc);
            return 0;
        }

        /* all fragments present ? */
        if (!_join_segment_fragments(*p)) {
            GP_TRACE("splitted segment not complete, waiting for next fragment\n");
            return 0;
        }

        GP_TRACE("Decoding segment, dts %010"PRId64" pts %010"PRId64" len %d\n",
                 (*p)->dts, (*p)->pts, (*p)->len);

        /* decode segment */
        if ((*p)->len > 2) {
            _decode_segment(*s, *p);
        }

        pes_buffer_remove(p, *p);
    }

    return (*s)->complete;
}