static av_cold void iv_alloc_frames(Indeo3DecodeContext *s) { int luma_width, luma_height, luma_pixels, chroma_width, chroma_height, chroma_pixels, i; unsigned int bufsize; luma_width = (s->width + 3) & (~3); luma_height = (s->height + 3) & (~3); s->iv_frame[0].y_w = s->iv_frame[0].y_h = s->iv_frame[0].the_buf_size = 0; s->iv_frame[1].y_w = s->iv_frame[1].y_h = s->iv_frame[1].the_buf_size = 0; s->iv_frame[1].the_buf = NULL; chroma_width = ((luma_width >> 2) + 3) & (~3); chroma_height = ((luma_height>> 2) + 3) & (~3); luma_pixels = luma_width * luma_height; chroma_pixels = chroma_width * chroma_height; bufsize = luma_pixels * 2 + luma_width * 3 + (chroma_pixels + chroma_width) * 4; if(!(s->iv_frame[0].the_buf = av_malloc(bufsize))) return; s->iv_frame[0].y_w = s->iv_frame[1].y_w = luma_width; s->iv_frame[0].y_h = s->iv_frame[1].y_h = luma_height; s->iv_frame[0].uv_w = s->iv_frame[1].uv_w = chroma_width; s->iv_frame[0].uv_h = s->iv_frame[1].uv_h = chroma_height; s->iv_frame[0].the_buf_size = bufsize; s->iv_frame[0].Ybuf = s->iv_frame[0].the_buf + luma_width; i = luma_pixels + luma_width * 2; s->iv_frame[1].Ybuf = s->iv_frame[0].the_buf + i; i += (luma_pixels + luma_width); s->iv_frame[0].Ubuf = s->iv_frame[0].the_buf + i; i += (chroma_pixels + chroma_width); s->iv_frame[1].Ubuf = s->iv_frame[0].the_buf + i; i += (chroma_pixels + chroma_width); s->iv_frame[0].Vbuf = s->iv_frame[0].the_buf + i; i += (chroma_pixels + chroma_width); s->iv_frame[1].Vbuf = s->iv_frame[0].the_buf + i; for(i = 1; i <= luma_width; i++) s->iv_frame[0].Ybuf[-i] = s->iv_frame[1].Ybuf[-i] = s->iv_frame[0].Ubuf[-i] = 0x80; for(i = 1; i <= chroma_width; i++) { s->iv_frame[1].Ubuf[-i] = 0x80; s->iv_frame[0].Vbuf[-i] = 0x80; s->iv_frame[1].Vbuf[-i] = 0x80; s->iv_frame[1].Vbuf[chroma_pixels+i-1] = 0x80; } }