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video_codec: best_decoder_cmp - use common comparator

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This commit is contained in:
Martin Pulec
2023-03-06 15:47:46 +01:00
parent f760123146
commit b5dc72902e
1 changed files with 11 additions and 38 deletions
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49
src/video_codec.c
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@@ -50,7 +50,7 @@
*
*/
#include "compat/qsort_s.h"
#define __STDC_WANT_LIB_EXT1__ 1
#ifdef HAVE_CONFIG_H
#include "config.h"
@@ -65,6 +65,7 @@
#include <string.h>
#include "color.h"
#include "compat/qsort_s.h"
#include "debug.h"
#include "host.h"
#include "hwaccel_vdpau.h"
@@ -3414,45 +3415,16 @@ decoder_t get_decoder_from_to(codec_t in, codec_t out) {
}
// less is better
#ifdef QSORT_S_COMP_FIRST
static int best_decoder_cmp(void *orig_c, const void *a, const void *b) {
#else
static int best_decoder_cmp(const void *a, const void *b, void *orig_c) {
#endif
static QSORT_S_COMP_DEFINE(best_decoder_cmp, a, b, desc_src) {
codec_t codec_a = *(const codec_t *) a;
codec_t codec_b = *(const codec_t *) b;
codec_t orig_codec = *(codec_t *) orig_c;
struct pixfmt_desc *src_desc = desc_src;
struct pixfmt_desc desc_a = get_pixfmt_desc(codec_a);
struct pixfmt_desc desc_b = get_pixfmt_desc(codec_b);
if (orig_codec == codec_a || orig_codec == codec_b) { // exact match
return orig_codec == codec_a ? -1 : 1;
}
bool slow_a = get_decoder_from_to_internal(orig_codec, codec_a, false) == NULL;
bool slow_b = get_decoder_from_to_internal(orig_codec, codec_b, false) == NULL;
if (slow_a != slow_b) {
return slow_a ? 1 : -1;
}
int bits_a = get_bits_per_component(codec_a);
int bits_b = get_bits_per_component(codec_b);
if (bits_a != bits_b) {
int bits_orig = get_bits_per_component(orig_codec);
// either a or b is lower than orig - sort higher bit depth first
if (bits_a < bits_orig || bits_b < bits_orig) {
return bits_b - bits_a;
}
// both are equal or higher - sort lower bit depth first
return bits_a - bits_b;
}
int subs_a = get_subsampling(codec_a);
int subs_b = get_subsampling(codec_b);
if (subs_a != subs_b) {
int subs_orig = get_subsampling(orig_codec);
if (subs_a < subs_orig || subs_b < subs_orig) {
return subs_b - subs_a; // return better subs
}
return subs_a - subs_b;
int ret = compare_pixdesc(&desc_a, &desc_b, src_desc);
if (ret != 0) {
return ret;
}
return (int) codec_a - (int) codec_b;
@@ -3481,7 +3453,8 @@ decoder_t get_best_decoder_from(codec_t in, const codec_t *out_candidates, codec
if (count == 0) {
return NULL;
}
qsort_s(candidates, count, sizeof(codec_t), best_decoder_cmp, &in);
struct pixfmt_desc src_desc = get_pixfmt_desc(in);
qsort_s(candidates, count, sizeof(codec_t), best_decoder_cmp, &src_desc);
*out = candidates[0];
return get_decoder_from_to(in, *out);
}