#define WIDTH 1280
#define HEIGHT 720
+#define WIDTH_BLOCKS (WIDTH/8)
+#define WIDTH_BLOCKS_CHROMA (WIDTH/16)
+#define HEIGHT_BLOCKS (HEIGHT/8)
+#define NUM_BLOCKS (WIDTH_BLOCKS * HEIGHT_BLOCKS)
+#define NUM_BLOCKS_CHROMA (WIDTH_BLOCKS_CHROMA * HEIGHT_BLOCKS)
const unsigned prob_bits = 12;
const unsigned prob_scale = 1 << prob_bits;
return nullopt; // Error: EOF.
}
+const unsigned num_blocks = ((NUM_BLOCKS + BLOCKS_PER_STREAM - 1) / BLOCKS_PER_STREAM);
+
struct CoeffStream {
uint src_offset, src_len;
};
-CoeffStream streams[45 * 64]; // HACK
+CoeffStream streams[num_blocks * 64];
int main(int argc, char **argv)
{
GLint num_blocks_pos = glGetUniformLocation(glsl_program_num, "num_blocks");
printf("%d err=0x%x pos=%d,%d,%d,%d\n", __LINE__, glGetError(), cum2sym_tex_pos, dsyms_tex_pos, out_tex_pos, sign_bias_pos);
- unsigned num_blocks = (HEIGHT / 16);
-
// Bind the textures.
glUniform1i(cum2sym_tex_pos, 0);
glUniform1i(dsyms_tex_pos, 1);
for (unsigned x = 0; x < 8; ++x) {
unsigned coeff_num = y * 8 + x;
- for (unsigned yb = 0; yb < HEIGHT; yb += 16) {
+ for (unsigned block_idx = 0; block_idx < NUM_BLOCKS; block_idx += BLOCKS_PER_STREAM) {
optional<uint32_t> num_rans_bytes = read_varint(&ptr, end);
if (!num_rans_bytes) {
- fprintf(stderr, "Error parsing varint for block %d rANS bytes\n", yb);
+ fprintf(stderr, "Error parsing varint for block %d rANS bytes\n", block_idx);
exit(1);
}
- CoeffStream *stream = &streams[coeff_num * num_blocks + (yb/16)];
+ CoeffStream *stream = &streams[coeff_num * num_blocks + block_idx / BLOCKS_PER_STREAM];
stream->src_offset = ptr - coded.data();
stream->src_len = *num_rans_bytes;