Remove unused "frame cache" structure
The decoder's "aom_codec_alg_priv" structure includes a "frame cache",
which is in theory used by decoder_get_frame(). But there is no code
to populate this cache, so it never gets used.
BUG=aomedia:1941
Change-Id: Ifd50b3691b296c587e5943ef17eb5065c299d133
diff --git a/av1/av1_dx_iface.c b/av1/av1_dx_iface.c
index c440fed..340e0ea 100644
--- a/av1/av1_dx_iface.c
+++ b/av1/av1_dx_iface.c
@@ -33,16 +33,6 @@
#include "av1/av1_iface_common.h"
-// This limit is due to framebuffer numbers.
-// TODO(hkuang): Remove this limit after implementing ondemand framebuffers.
-#define FRAME_CACHE_SIZE 6 // Cache maximum 6 decoded frames.
-
-typedef struct cache_frame {
- int fb_idx;
- aom_image_t img;
- aom_film_grain_t film_grain_params;
-} cache_frame;
-
struct aom_codec_alg_priv {
aom_codec_priv_t base;
aom_codec_dec_cfg_t cfg;
@@ -70,11 +60,7 @@
int last_submit_worker_id;
int next_output_worker_id;
int available_threads;
- cache_frame frame_cache[FRAME_CACHE_SIZE];
aom_image_t *image_with_grain;
- int frame_cache_write;
- int frame_cache_read;
- int num_cache_frames;
int need_resync; // wait for key/intra-only frame
// BufferPool that holds all reference frames. Shared by all the FrameWorkers.
BufferPool *buffer_pool;
@@ -349,9 +335,6 @@
ctx->next_submit_worker_id = 0;
ctx->last_submit_worker_id = 0;
ctx->next_output_worker_id = 0;
- ctx->frame_cache_read = 0;
- ctx->frame_cache_write = 0;
- ctx->num_cache_frames = 0;
ctx->need_resync = 1;
ctx->num_frame_workers = 1;
if (ctx->num_frame_workers > MAX_DECODE_THREADS)
@@ -591,18 +574,6 @@
aom_codec_iter_t *iter) {
aom_image_t *img = NULL;
- // Output the frames in the cache first.
- if (ctx->num_cache_frames > 0) {
- ctx->last_show_frame = ctx->frame_cache[ctx->frame_cache_read].fb_idx;
- if (ctx->need_resync) return NULL;
- img = &ctx->frame_cache[ctx->frame_cache_read].img;
- ctx->frame_cache_read = (ctx->frame_cache_read + 1) % FRAME_CACHE_SIZE;
- --ctx->num_cache_frames;
- return add_grain_if_needed(
- img, ctx->image_with_grain,
- &ctx->frame_cache[ctx->frame_cache_read].film_grain_params);
- }
-
// iter acts as a flip flop, so an image is only returned on the first
// call to get_frame.
if (*iter == NULL && ctx->frame_workers != NULL) {
