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af_hdcd: Improve error detection logging

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* Moves the filter context member out of state and into HDCDContext
* More useful information when an error is detected
* Gives a location near where the error was detected

Signed-off-by: Burt P <pburt0@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Burt P 2016-07-29 12:36:18 -05:00 committed by Michael Niedermayer
parent bbf0b4fa88
commit 6517177d97
1 changed files with 19 additions and 15 deletions
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34
libavfilter/af_hdcd.c
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@ -849,8 +849,6 @@ typedef struct {
/* occurences of code detect timer expiring without detecting
* a code. -1 for timer never set. */
int count_sustain_expired;
AVFilterContext *fctx; /* filter context for logging errors */
} hdcd_state_t;
typedef enum {
@ -869,6 +867,9 @@ typedef struct HDCDContext {
const AVClass *class;
hdcd_state_t state[2];
AVFilterContext *fctx; /* filter context for logging errors */
int sample_count; /* used in error logging */
/* User information/stats */
int hdcd_detected;
int det_errors; /* detectable errors */
@ -923,7 +924,7 @@ static void hdcd_update_info(hdcd_state_t *state)
state->max_gain = FFMAX(state->max_gain, (state->control & 15));
}
static int hdcd_integrate(hdcd_state_t *state, int *flag, const int32_t *samples, int count, int stride)
static int hdcd_integrate(HDCDContext *ctx, hdcd_state_t *state, int *flag, const int32_t *samples, int count, int stride)
{
uint32_t bits = 0;
int result = FFMIN(state->readahead, count);
@ -954,8 +955,8 @@ static int hdcd_integrate(hdcd_state_t *state, int *flag, const int32_t *samples
} else {
/* one of bits 3, 6, or 7 was not 0 */
state->code_counterA_almost++;
av_log(state->fctx, AV_LOG_VERBOSE,
"hdcd error: Control A almost: 0x%08x\n", bits);
av_log(ctx->fctx, AV_LOG_VERBOSE,
"hdcd error: Control A almost: 0x%02x near %d\n", bits & 0xff, ctx->sample_count);
}
} else if ((bits & 0xa0060000) == 0xa0060000) {
/* B: 8-bit code, 8-bit XOR check */
@ -968,14 +969,14 @@ static int hdcd_integrate(hdcd_state_t *state, int *flag, const int32_t *samples
} else {
/* XOR check failed */
state->code_counterB_checkfails++;
av_log(state->fctx, AV_LOG_VERBOSE,
"hdcd error: Control B check failed: 0x%08x\n", bits);
av_log(ctx->fctx, AV_LOG_VERBOSE,
"hdcd error: Control B check failed: 0x%04x (0x%02x vs 0x%02x) near %d\n", bits & 0xffff, (bits & 0xff00) >> 8, ~bits & 0xff, ctx->sample_count);
}
} else {
/* told to look for a code, but didn't match one */
state->code_counterC_unmatched++;
av_log(state->fctx, AV_LOG_VERBOSE,
"hdcd error: Unmatched code: 0x%08x\n", bits);
av_log(ctx->fctx, AV_LOG_VERBOSE,
"hdcd error: Unmatched code: 0x%08x near %d\n", bits, ctx->sample_count);
}
if (*flag) hdcd_update_info(state);
state->arg = 0;
@ -1002,7 +1003,7 @@ static void hdcd_sustain_reset(hdcd_state_t *state)
state->count_sustain_expired = 0;
}
static int hdcd_scan(hdcd_state_t *state, const int32_t *samples, int max, int stride)
static int hdcd_scan(HDCDContext *ctx, hdcd_state_t *state, const int32_t *samples, int max, int stride)
{
int cdt_active = 0;
/* code detect timer */
@ -1018,7 +1019,7 @@ static int hdcd_scan(hdcd_state_t *state, const int32_t *samples, int max, int s
result = 0;
while (result < max) {
int flag;
int consumed = hdcd_integrate(state, &flag, samples, max - result, stride);
int consumed = hdcd_integrate(ctx, state, &flag, samples, max - result, stride);
result += consumed;
if (flag > 0) {
/* reset timer if code detected in channel */
@ -1092,7 +1093,7 @@ static int hdcd_envelope(int32_t *samples, int count, int stride, int gain, int
return gain;
}
static void hdcd_process(hdcd_state_t *state, int32_t *samples, int count, int stride)
static void hdcd_process(HDCDContext *ctx, hdcd_state_t *state, int32_t *samples, int count, int stride)
{
int32_t *samples_end = samples + count * stride;
int gain = state->running_gain;
@ -1105,7 +1106,7 @@ static void hdcd_process(hdcd_state_t *state, int32_t *samples, int count, int s
int run;
av_assert0(samples + lead * stride + stride * (count - lead) <= samples_end);
run = hdcd_scan(state, samples + lead * stride, count - lead, stride) + lead;
run = hdcd_scan(ctx, state, samples + lead * stride, count - lead, stride) + lead;
envelope_run = run - 1;
av_assert0(samples + envelope_run * stride <= samples_end);
@ -1160,7 +1161,7 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
s->det_errors = 0;
for (c = 0; c < inlink->channels; c++) {
hdcd_state_t *state = &s->state[c];
hdcd_process(state, out_data + c, in->nb_samples, out->channels);
hdcd_process(s, state, out_data + c, in->nb_samples, out->channels);
if (state->sustain) detect++;
packets += state->code_counterA + state->code_counterB;
pe_packets += state->count_peak_extend;
@ -1183,6 +1184,8 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *in)
* channels at the same time. */
if (detect == inlink->channels) s->hdcd_detected = 1;
s->sample_count += in->nb_samples * in->channels;
av_frame_free(&in);
return ff_filter_frame(outlink, out);
}
@ -1275,10 +1278,11 @@ static av_cold int init(AVFilterContext *ctx)
int c;
s->max_gain_adjustment = 0.0;
s->sample_count = 0;
s->fctx = ctx;
for (c = 0; c < 2; c++) {
hdcd_reset(&s->state[c], 44100);
s->state[c].fctx = ctx;
}
return 0;