int vp9_alloc_ref_frame_buffers(VP9_COMMON *cm, int width, int height) {
int i;
const int ss_x = cm->subsampling_x;
const int ss_y = cm->subsampling_y;
vp9_free_ref_frame_buffers(cm);
for (i = 0; i < FRAME_BUFFERS; ++i) {
cm->frame_bufs[i].ref_count = 0;
if (vp9_alloc_frame_buffer(&cm->frame_bufs[i].buf, width, height,
ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS) < 0)
goto fail;
}
init_frame_bufs(cm);
#if CONFIG_INTERNAL_STATS || CONFIG_VP9_POSTPROC
if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS) < 0)
goto fail;
#endif
return 0;
fail:
vp9_free_ref_frame_buffers(cm);
return 1;
}
int vp9_alloc_ref_frame_buffers(VP9_COMMON *cm, int width, int height) {
int i;
const int ss_x = cm->subsampling_x;
const int ss_y = cm->subsampling_y;
vp9_free_ref_frame_buffers(cm);
for (i = 0; i < FRAME_BUFFERS; ++i) {
BufferPool *const pool = cm->buffer_pool;
pool->frame_bufs[i].ref_count = 0;
if (vp9_alloc_frame_buffer(&pool->frame_bufs[i].buf, width, height,
ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS,
cm->byte_alignment) < 0)
goto fail;
if (pool->frame_bufs[i].mvs == NULL) {
pool->frame_bufs[i].mvs =
(MV_REF *)vpx_calloc(cm->mi_rows * cm->mi_cols,
sizeof(*pool->frame_bufs[i].mvs));
if (pool->frame_bufs[i].mvs == NULL)
goto fail;
pool->frame_bufs[i].mi_rows = cm->mi_rows;
pool->frame_bufs[i].mi_cols = cm->mi_cols;
}
}
init_frame_bufs(cm);
#if CONFIG_VP9_POSTPROC
if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS,
cm->byte_alignment) < 0)
goto fail;
#endif
return 0;
fail:
vp9_free_ref_frame_buffers(cm);
return 1;
}
struct lookahead_ctx *vp9_lookahead_init(unsigned int width,
unsigned int height,
unsigned int subsampling_x,
unsigned int subsampling_y,
unsigned int depth) {
struct lookahead_ctx *ctx = NULL;
// Clamp the lookahead queue depth
depth = clamp(depth, 1, MAX_LAG_BUFFERS);
// Allocate memory to keep previous source frames available.
depth += MAX_PRE_FRAMES;
// Allocate the lookahead structures
ctx = calloc(1, sizeof(*ctx));
if (ctx) {
unsigned int i;
ctx->max_sz = depth;
ctx->buf = calloc(depth, sizeof(*ctx->buf));
if (!ctx->buf)
goto bail;
for (i = 0; i < depth; i++)
if (vp9_alloc_frame_buffer(&ctx->buf[i].img,
width, height, subsampling_x, subsampling_y,
VP9_ENC_BORDER_IN_PIXELS))
goto bail;
}
return ctx;
bail:
vp9_lookahead_destroy(ctx);
return NULL;
}
struct lookahead_ctx * vp9_lookahead_init(unsigned int width,
unsigned int height,
unsigned int subsampling_x,
unsigned int subsampling_y,
unsigned int depth) {
struct lookahead_ctx *ctx = NULL;
depth = clamp(depth, 1, MAX_LAG_BUFFERS);
ctx = calloc(1, sizeof(*ctx));
if (ctx) {
unsigned int i;
ctx->max_sz = depth;
ctx->buf = calloc(depth, sizeof(*ctx->buf));
if (!ctx->buf)
goto bail;
for (i = 0; i < depth; i++)
if (vp9_alloc_frame_buffer(&ctx->buf[i].img,
width, height, subsampling_x, subsampling_y,
VP9BORDERINPIXELS))
goto bail;
}
return ctx;
bail:
vp9_lookahead_destroy(ctx);
return NULL;
}
int vp9_alloc_ref_frame_buffers(VP9_COMMON *cm, int width, int height) {
int i;
const int ss_x = cm->subsampling_x;
const int ss_y = cm->subsampling_y;
vpx_get_frame_buffer_cb_fn_t cb = NULL;
vpx_codec_frame_buffer_t *codec_frame_buffer = NULL;
void *cb_priv = NULL;
vp9_free_ref_frame_buffers(cm);
for (i = 0; i < FRAME_BUFFERS; ++i) {
#if CONFIG_GPU_COMPUTE
vpx_codec_frame_buffer_t raw_frame_buffer;
gpu_cb_priv gpu_priv = {cm, &cm->frame_bufs[i].buf};
if (cm->use_gpu) {
cb = vp9_gpu_get_frame_buffer;
codec_frame_buffer = &raw_frame_buffer;
cb_priv = &gpu_priv;
}
#if CONFIG_VP9_HIGHBITDEPTH
// gpu kernels for now do not support higher bit depths.
assert(cm->use_highbitdepth == 0);
#endif
#endif
cm->frame_bufs[i].ref_count = 0;
if (&cm->frame_bufs[i].buf) {
vp9_free_frame_buffer(&cm->frame_bufs[i].buf);
if (vp9_realloc_frame_buffer(&cm->frame_bufs[i].buf, width, height,
ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS,
codec_frame_buffer, cb, cb_priv)){
goto fail;
}
}
}
init_frame_bufs(cm);
#if CONFIG_INTERNAL_STATS || CONFIG_VP9_POSTPROC
if (vp9_alloc_frame_buffer(&cm->post_proc_buffer, width, height, ss_x, ss_y,
#if CONFIG_VP9_HIGHBITDEPTH
cm->use_highbitdepth,
#endif
VP9_ENC_BORDER_IN_PIXELS) < 0)
goto fail;
#endif
return 0;
fail:
vp9_free_ref_frame_buffers(cm);
return 1;
}
// For viewing skin map on input source.
void vp9_compute_skin_map(VP9_COMP *const cpi, FILE *yuv_skinmap_file) {
int i, j, mi_row, mi_col;
VP9_COMMON *const cm = &cpi->common;
uint8_t *y;
const uint8_t *src_y = cpi->Source->y_buffer;
const uint8_t *src_u = cpi->Source->u_buffer;
const uint8_t *src_v = cpi->Source->v_buffer;
const int src_ystride = cpi->Source->y_stride;
const int src_uvstride = cpi->Source->uv_stride;
YV12_BUFFER_CONFIG skinmap;
vpx_memset(&skinmap, 0, sizeof(YV12_BUFFER_CONFIG));
if (vp9_alloc_frame_buffer(&skinmap, cm->width, cm->height,
cm->subsampling_x, cm->subsampling_y,
VP9_ENC_BORDER_IN_PIXELS, cm->byte_alignment)) {
vp9_free_frame_buffer(&skinmap);
return;
}
vpx_memset(skinmap.buffer_alloc, 128, skinmap.frame_size);
y = skinmap.y_buffer;
// Loop through 8x8 blocks and set skin map based on center pixel of block.
// Set y to white for skin block, otherwise set to source with gray scale.
// Ignore rightmost/bottom boundary blocks.
for (mi_row = 0; mi_row < cm->mi_rows - 1; ++mi_row) {
for (mi_col = 0; mi_col < cm->mi_cols - 1; ++mi_col) {
// Use middle pixel for each 8x8 block for skin detection.
// If middle pixel is skin, assign whole 8x8 block to skin.
const uint8_t ysource = src_y[4 * src_ystride + 4];
const uint8_t usource = src_u[2 * src_uvstride + 2];
const uint8_t vsource = src_v[2 * src_uvstride + 2];
const int is_skin = vp9_skin_pixel(ysource, usource, vsource);
for (i = 0; i < 8; i++) {
for (j = 0; j < 8; j++) {
if (is_skin)
y[i * src_ystride + j] = 255;
else
y[i * src_ystride + j] = src_y[i * src_ystride + j];
}
}
y += 8;
src_y += 8;
src_u += 4;
src_v += 4;
}
y += (src_ystride << 3) - ((cm->mi_cols - 1) << 3);
src_y += (src_ystride << 3) - ((cm->mi_cols - 1) << 3);
src_u += (src_uvstride << 2) - ((cm->mi_cols - 1) << 2);
src_v += (src_uvstride << 2) - ((cm->mi_cols - 1) << 2);
}
vp9_write_yuv_frame_420(&skinmap, yuv_skinmap_file);
vp9_free_frame_buffer(&skinmap);
}
