virtualenv/FFmpeg
1
0
Fork 0
mirror of https://github.com/FFmpeg/FFmpeg.git synced 2024-12-23 12:43:46 +02:00
Code Issues Releases Activity

af_hdcd: add AVOption to set the CDT period

Browse Source 
Signed-off-by: Burt P <pburt0@gmail.com>
This commit is contained in:
Burt P 2016-08-10 01:18:18 -05:00
parent 400e2acd11
commit 8c19732a42
1 changed files with 9 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

12
libavfilter/af_hdcd.c
View File

@ -917,6 +917,8 @@ typedef struct HDCDContext {
* process. See docs or HDCD_ANA_* defines. */
int analyze_mode;
int ana_snb; /**< used in tone generation */
int cdt_ms; /**< code detect timer period in ms */
/* end AVOption members */
/** config_input() and config_output() scan links for any resampling
@ -941,6 +943,8 @@ typedef struct HDCDContext {
static const AVOption hdcd_options[] = {
{ "process_stereo", "Process stereo channels together. Only apply target_gain when both channels match.",
OFFSET(process_stereo), AV_OPT_TYPE_BOOL, { .i64 = HDCD_PROCESS_STEREO_DEFAULT }, 0, 1, A },
{ "cdt_ms", "Code detect timer period in ms.",
OFFSET(cdt_ms), AV_OPT_TYPE_INT, { .i64 = 2000 }, 100, 60000, A },
{ "force_pe", "Always extend peaks above -3dBFS even when PE is not signaled.",
OFFSET(force_pe), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, A },
{ "analyze_mode", "Replace audio with solid tone and signal some processing aspect in the amplitude.",
@ -957,7 +961,7 @@ AVFILTER_DEFINE_CLASS(hdcd);
#define APPLY_GAIN(s,g) do{int64_t s64 = s; s64 *= gaintab[g]; s = (int32_t)(s64 >> 23); }while(0);
static void hdcd_reset(hdcd_state_t *state, unsigned rate)
static void hdcd_reset(hdcd_state_t *state, unsigned rate, unsigned cdt_ms)
{
int i;
@ -969,7 +973,7 @@ static void hdcd_reset(hdcd_state_t *state, unsigned rate)
state->running_gain = 0;
state->sustain = 0;
state->sustain_reset = rate * 10;
state->sustain_reset = cdt_ms*rate/1000;
state->code_counterA = 0;
state->code_counterA_almost = 0;
@ -1705,9 +1709,11 @@ static av_cold int init(AVFilterContext *ctx)
s->bad_config = 0;
for (c = 0; c < HDCD_MAX_CHANNELS; c++) {
hdcd_reset(&s->state[c], 44100);
hdcd_reset(&s->state[c], 44100, s->cdt_ms);
}
av_log(ctx, AV_LOG_VERBOSE, "CDT period: %dms (%d samples @44100Hz)\n",
s->cdt_ms, s->cdt_ms*44100/1000 );
av_log(ctx, AV_LOG_VERBOSE, "Process mode: %s\n",
(s->process_stereo) ? "process stereo channels together" : "process each channel separately");
av_log(ctx, AV_LOG_VERBOSE, "Force PE: %s\n",