static void sunrast_image_write_image(AVCodecContext *avctx, const uint8_t *pixels, const uint32_t *palette_data, int linesize) { SUNRASTContext *s = avctx->priv_data; const uint8_t *ptr; int len, alen, x; if (s->maplength) { // palettized PutByteContext pb_r, pb_g; int len = s->maplength / 3; pb_r = s->p; bytestream2_skip_p(&s->p, len); pb_g = s->p; bytestream2_skip_p(&s->p, len); for (x = 0; x < len; x++) { uint32_t pixel = palette_data[x]; bytestream2_put_byteu(&pb_r, (pixel >> 16) & 0xFF); bytestream2_put_byteu(&pb_g, (pixel >> 8) & 0xFF); bytestream2_put_byteu(&s->p, pixel & 0xFF); } } len = (s->depth * avctx->width + 7) >> 3; alen = len + (len & 1); ptr = pixels; if (s->type == RT_BYTE_ENCODED) { uint8_t value, value2; int run; const uint8_t *end = pixels + avctx->height * linesize; ptr = pixels; #define GET_VALUE ptr >= end ? 0 : x >= len ? ptr[len-1] : ptr[x] x = 0; value2 = GET_VALUE; while (ptr < end) { run = 1; value = value2; x++; if (x >= alen) { x = 0; ptr += linesize; } value2 = GET_VALUE; while (value2 == value && run < 256 && ptr < end) { x++; run++; if (x >= alen) { x = 0; ptr += linesize; } value2 = GET_VALUE; } if (run > 2 || value == RLE_TRIGGER) { bytestream2_put_byteu(&s->p, RLE_TRIGGER); bytestream2_put_byteu(&s->p, run - 1); if (run > 1) bytestream2_put_byteu(&s->p, value); } else if (run == 1) { bytestream2_put_byteu(&s->p, value); } else bytestream2_put_be16u(&s->p, (value << 8) | value); } // update data length for header s->length = bytestream2_tell_p(&s->p) - 32 - s->maplength; } else { int y; for (y = 0; y < avctx->height; y++) { bytestream2_put_buffer(&s->p, ptr, len); if (len < alen) bytestream2_put_byteu(&s->p, 0); ptr += linesize; } } }