[FFmpeg-devel] [PATCH] avcodec/dnxhd: Make ff_dxnhd_get_cid_table return a pointer, not index
Andreas Rheinhardt
andreas.rheinhardt at gmail.com
Fri Jan 22 23:51:16 EET 2021
All callers only use the index into ff_dnxhd_cid_table to get a pointer
to the desired entry.
Signed-off-by: Andreas Rheinhardt <andreas.rheinhardt at gmail.com>
---
libavcodec/dnxhddata.c | 46 +++++++++++++++++++++---------------------
libavcodec/dnxhddata.h | 4 +---
libavcodec/dnxhddec.c | 13 ++++++------
libavcodec/dnxhdenc.c | 8 +++-----
4 files changed, 34 insertions(+), 37 deletions(-)
diff --git a/libavcodec/dnxhddata.c b/libavcodec/dnxhddata.c
index 154be89860..3a69a0f501 100644
--- a/libavcodec/dnxhddata.c
+++ b/libavcodec/dnxhddata.c
@@ -932,7 +932,7 @@ static const uint8_t dnxhd_1250_run[62] = {
49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62,
};
-const CIDEntry ff_dnxhd_cid_table[] = {
+static const CIDEntry dnxhd_cid_table[] = {
{ 1235, 1920, 1080, 917504, 917504,
0, 6, 10, 4,
dnxhd_1235_luma_weight, dnxhd_1235_chroma_weight,
@@ -1075,31 +1075,31 @@ const CIDEntry ff_dnxhd_cid_table[] = {
{ 0 }, { 5888, 255} },
};
-int ff_dnxhd_get_cid_table(int cid)
+const CIDEntry *ff_dnxhd_get_cid_table(int cid)
{
- int i;
- for (i = 0; i < FF_ARRAY_ELEMS(ff_dnxhd_cid_table); i++)
- if (ff_dnxhd_cid_table[i].cid == cid)
- return i;
- return -1;
+ for (int i = 0; i < FF_ARRAY_ELEMS(dnxhd_cid_table); i++)
+ if (dnxhd_cid_table[i].cid == cid)
+ return &dnxhd_cid_table[i];
+ return NULL;
}
int avpriv_dnxhd_get_frame_size(int cid)
{
- int i = ff_dnxhd_get_cid_table(cid);
- if (i<0)
- return i;
- return ff_dnxhd_cid_table[i].frame_size;
+ const CIDEntry *entry = ff_dnxhd_get_cid_table(cid);
+ if (!entry)
+ return -1;
+ return entry->frame_size;
}
int avpriv_dnxhd_get_hr_frame_size(int cid, int w, int h)
{
- int result, i = ff_dnxhd_get_cid_table(cid);
+ const CIDEntry *entry = ff_dnxhd_get_cid_table(cid);
+ int result;
- if (i < 0)
- return i;
+ if (!entry)
+ return -1;
- result = ((h + 15) / 16) * ((w + 15) / 16) * (int64_t)ff_dnxhd_cid_table[i].packet_scale.num / ff_dnxhd_cid_table[i].packet_scale.den;
+ result = ((h + 15) / 16) * ((w + 15) / 16) * (int64_t)entry->packet_scale.num / entry->packet_scale.den;
result = (result + 2048) / 4096 * 4096;
return FFMAX(result, 8192);
@@ -1107,10 +1107,10 @@ int avpriv_dnxhd_get_hr_frame_size(int cid, int w, int h)
int avpriv_dnxhd_get_interlaced(int cid)
{
- int i = ff_dnxhd_get_cid_table(cid);
- if (i < 0)
- return i;
- return ff_dnxhd_cid_table[i].flags & DNXHD_INTERLACED ? 1 : 0;
+ const CIDEntry *entry = ff_dnxhd_get_cid_table(cid);
+ if (!entry)
+ return -1;
+ return entry->flags & DNXHD_INTERLACED ? 1 : 0;
}
static int dnxhd_find_hr_cid(AVCodecContext *avctx)
@@ -1140,8 +1140,8 @@ int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth)
if (!mbs)
return 0;
- for (i = 0; i < FF_ARRAY_ELEMS(ff_dnxhd_cid_table); i++) {
- const CIDEntry *cid = &ff_dnxhd_cid_table[i];
+ for (i = 0; i < FF_ARRAY_ELEMS(dnxhd_cid_table); i++) {
+ const CIDEntry *cid = &dnxhd_cid_table[i];
int interlaced = cid->flags & DNXHD_INTERLACED ? 1 : 0;
if (cid->width == avctx->width && cid->height == avctx->height &&
interlaced == !!(avctx->flags & AV_CODEC_FLAG_INTERLACED_DCT) &&
@@ -1163,8 +1163,8 @@ int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth)
void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel)
{
int i, j;
- for (i = 0; i < FF_ARRAY_ELEMS(ff_dnxhd_cid_table); i++) {
- const CIDEntry *cid = &ff_dnxhd_cid_table[i];
+ for (i = 0; i < FF_ARRAY_ELEMS(dnxhd_cid_table); i++) {
+ const CIDEntry *cid = &dnxhd_cid_table[i];
for (j = 0; j < FF_ARRAY_ELEMS(cid->bit_rates); j++) {
if (!cid->bit_rates[j])
break;
diff --git a/libavcodec/dnxhddata.h b/libavcodec/dnxhddata.h
index cfa6b0c99d..898079cffc 100644
--- a/libavcodec/dnxhddata.h
+++ b/libavcodec/dnxhddata.h
@@ -58,9 +58,7 @@ typedef struct CIDEntry {
AVRational packet_scale;
} CIDEntry;
-extern const CIDEntry ff_dnxhd_cid_table[];
-
-int ff_dnxhd_get_cid_table(int cid);
+const CIDEntry *ff_dnxhd_get_cid_table(int cid);
int ff_dnxhd_find_cid(AVCodecContext *avctx, int bit_depth);
void ff_dnxhd_print_profiles(AVCodecContext *avctx, int loglevel);
diff --git a/libavcodec/dnxhddec.c b/libavcodec/dnxhddec.c
index 09bc6f9b59..c78d55aee5 100644
--- a/libavcodec/dnxhddec.c
+++ b/libavcodec/dnxhddec.c
@@ -113,18 +113,19 @@ static av_cold int dnxhd_decode_init(AVCodecContext *avctx)
static int dnxhd_init_vlc(DNXHDContext *ctx, uint32_t cid, int bitdepth)
{
if (cid != ctx->cid) {
- int index;
+ const CIDEntry *cid_table = ff_dnxhd_get_cid_table(cid);
- if ((index = ff_dnxhd_get_cid_table(cid)) < 0) {
+ if (!cid_table) {
av_log(ctx->avctx, AV_LOG_ERROR, "unsupported cid %"PRIu32"\n", cid);
return AVERROR(ENOSYS);
}
- if (ff_dnxhd_cid_table[index].bit_depth != bitdepth &&
- ff_dnxhd_cid_table[index].bit_depth != DNXHD_VARIABLE) {
- av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n", ff_dnxhd_cid_table[index].bit_depth, bitdepth);
+ if (cid_table->bit_depth != bitdepth &&
+ cid_table->bit_depth != DNXHD_VARIABLE) {
+ av_log(ctx->avctx, AV_LOG_ERROR, "bit depth mismatches %d %d\n",
+ cid_table->bit_depth, bitdepth);
return AVERROR_INVALIDDATA;
}
- ctx->cid_table = &ff_dnxhd_cid_table[index];
+ ctx->cid_table = cid_table;
av_log(ctx->avctx, AV_LOG_VERBOSE, "Profile cid %"PRIu32".\n", cid);
ff_free_vlc(&ctx->ac_vlc);
diff --git a/libavcodec/dnxhdenc.c b/libavcodec/dnxhdenc.c
index 0144797d1b..2461c51727 100644
--- a/libavcodec/dnxhdenc.c
+++ b/libavcodec/dnxhdenc.c
@@ -351,7 +351,7 @@ static av_cold int dnxhd_init_rc(DNXHDEncContext *ctx)
static av_cold int dnxhd_encode_init(AVCodecContext *avctx)
{
DNXHDEncContext *ctx = avctx->priv_data;
- int i, index, ret;
+ int i, ret;
switch (avctx->pix_fmt) {
case AV_PIX_FMT_YUV422P:
@@ -411,10 +411,8 @@ static av_cold int dnxhd_encode_init(AVCodecContext *avctx)
return AVERROR(EINVAL);
}
- index = ff_dnxhd_get_cid_table(ctx->cid);
- av_assert0(index >= 0);
-
- ctx->cid_table = &ff_dnxhd_cid_table[index];
+ ctx->cid_table = ff_dnxhd_get_cid_table(ctx->cid);
+ av_assert0(ctx->cid_table);
ctx->m.avctx = avctx;
ctx->m.mb_intra = 1;
--
2.25.1
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