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Merge pull request #388 from jellyfin/prepare-vt-trickplay
lavc/videotoolbox: prepare for trickplay
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72 changes: 72 additions & 0 deletions
72
debian/patches/0076-vt-low-priority-keyframe-decoding.patch
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,72 @@ | ||
| Subject: [PATCH] lavcvideotoolbox: Add low_priority key_frame_only decoding | ||
| --- | ||
| Index: libavcodec/avcodec.h | ||
| IDEA additional info: | ||
| Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP | ||
| <+>UTF-8 | ||
| =================================================================== | ||
| diff --git a/libavcodec/avcodec.h b/libavcodec/avcodec.h | ||
| --- a/libavcodec/avcodec.h (revision 019c5b13ace26af67613d27f333104e90bde8b31) | ||
| +++ b/libavcodec/avcodec.h (revision c58e99fd3e45d898d4726456f6bddb0453592bac) | ||
| @@ -2275,6 +2275,13 @@ | ||
| */ | ||
| #define AV_HWACCEL_FLAG_UNSAFE_OUTPUT (1 << 3) | ||
|
|
||
| +/** | ||
| + * Some hardware decoders (like VideoToolbox) supports decode session priority | ||
| + * that run decode pipeline at a lower priority than is used for realtime decoding. | ||
| + * This will be useful for background processing without interrupting normal playback. | ||
| + */ | ||
| +#define AV_HWACCEL_FLAG_LOW_PRIORITY (1 << 4) | ||
| + | ||
| /** | ||
| * @} | ||
| */ | ||
| Index: libavcodec/options_table.h | ||
| IDEA additional info: | ||
| Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP | ||
| <+>UTF-8 | ||
| =================================================================== | ||
| diff --git a/libavcodec/options_table.h b/libavcodec/options_table.h | ||
| --- a/libavcodec/options_table.h (revision 019c5b13ace26af67613d27f333104e90bde8b31) | ||
| +++ b/libavcodec/options_table.h (revision c58e99fd3e45d898d4726456f6bddb0453592bac) | ||
| @@ -397,6 +397,7 @@ | ||
| {"unsafe_output", "allow potentially unsafe hwaccel frame output that might require special care to process successfully", 0, AV_OPT_TYPE_CONST, {.i64 = AV_HWACCEL_FLAG_UNSAFE_OUTPUT }, INT_MIN, INT_MAX, V | D, "hwaccel_flags"}, | ||
| {"extra_hw_frames", "Number of extra hardware frames to allocate for the user", OFFSET(extra_hw_frames), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, V|D }, | ||
| {"discard_damaged_percentage", "Percentage of damaged samples to discard a frame", OFFSET(discard_damaged_percentage), AV_OPT_TYPE_INT, {.i64 = 95 }, 0, 100, V|D }, | ||
| +{"low_priority", "attempt to run decode pipeline at a lower priority than is used for realtime decoding", 0, AV_OPT_TYPE_CONST, {.i64 = AV_HWACCEL_FLAG_LOW_PRIORITY }, INT_MIN, INT_MAX, V | D, "hwaccel_flags"}, | ||
| {NULL}, | ||
| }; | ||
|
|
||
| Index: libavcodec/videotoolbox.c | ||
| IDEA additional info: | ||
| Subsystem: com.intellij.openapi.diff.impl.patch.CharsetEP | ||
| <+>UTF-8 | ||
| =================================================================== | ||
| diff --git a/libavcodec/videotoolbox.c b/libavcodec/videotoolbox.c | ||
| --- a/libavcodec/videotoolbox.c (revision 019c5b13ace26af67613d27f333104e90bde8b31) | ||
| +++ b/libavcodec/videotoolbox.c (revision c58e99fd3e45d898d4726456f6bddb0453592bac) | ||
| @@ -983,6 +983,23 @@ | ||
| av_log(avctx, AV_LOG_ERROR, "VideoToolbox reported invalid data.\n"); | ||
| return AVERROR_INVALIDDATA; | ||
| case 0: | ||
| + if (avctx->skip_frame >= AVDISCARD_NONKEY) { | ||
| + status = VTSessionSetProperty(videotoolbox->session, | ||
| + kVTDecompressionPropertyKey_OnlyTheseFrames, | ||
| + kVTDecompressionProperty_OnlyTheseFrames_KeyFrames); | ||
| + if (status) { | ||
| + av_log(avctx, AV_LOG_WARNING, "kVTDecompressionProperty_OnlyTheseFrames_KeyFrames is not supported on this device. Ignoring.\n"); | ||
| + } | ||
| + } | ||
| + if (avctx->hwaccel_flags & AV_HWACCEL_FLAG_LOW_PRIORITY) { | ||
| + status = VTSessionSetProperty(videotoolbox->session, | ||
| + kVTDecompressionPropertyKey_RealTime, | ||
| + kCFBooleanFalse); | ||
| + av_log(avctx, AV_LOG_INFO, "Decoder running at lower priority.\n"); | ||
| + if (status) { | ||
| + av_log(avctx, AV_LOG_WARNING, "kVTDecompressionPropertyKey_RealTime is not supported on this device. Ignoring.\n"); | ||
| + } | ||
| + } | ||
| return 0; | ||
| default: | ||
| av_log(avctx, AV_LOG_ERROR, "Unknown VideoToolbox session creation error %d\n", (int)status); |
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