[FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Tomas Härdin]

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[-- Attachment #2: 0001-libavcodec-jpeg2000_parser-Speed-up-long-skips.patch --]
[-- Type: text/x-patch, Size: 1251 bytes --]

From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 11:38:25 +0200
Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

---
 libavcodec/jpeg2000_parser.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index 2975e71482..9fac958dfa 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -95,6 +95,17 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
         state64 = state64 << 8 | buf[i];
         m->bytes_read++;
         if (m->skip_bytes) {
+            // handle long skips
+            if (m->skip_bytes > 8) {
+                // need -9 else buf_size - i == 8 ==> i == buf_size after this,
+                // and thus i == buf_size + 1 after the loop
+                int64_t skip = FFMIN(m->skip_bytes - 8, buf_size - i - 9);
+                if (skip > 0) {
+                    m->skip_bytes -= skip;
+                    i += skip;
+                    m->bytes_read += skip;
+                }
+            }
             m->skip_bytes--;
             continue;
         }
-- 
2.30.2


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[FFmpeg-devel] [PATCH 2/8] libavcodec/jpeg2000_parser: Simplify, fix reset_context()

[Tomas Härdin]

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[-- Attachment #2: 0002-libavcodec-jpeg2000_parser-Simplify-fix-reset_contex.patch --]
[-- Type: text/x-patch, Size: 3730 bytes --]

From 4bf4593c0d4cbc36d8fcaabe9e36b39134403c34 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 11:44:06 +0200
Subject: [PATCH 2/8] libavcodec/jpeg2000_parser: Simplify, fix reset_context()

---
 libavcodec/jpeg2000_parser.c | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index 9fac958dfa..a7f72710e4 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -51,7 +51,7 @@ static inline void reset_context(JPEG2000ParserContext *m)
     ParseContext *pc = &m->pc;
 
     pc->frame_start_found= 0;
-    pc->state = 0;
+    pc->state64 = 0;
     m->bytes_read = 0;
     m->ft = 0;
     m->skipped_codestream = 0;
@@ -82,16 +82,14 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
 {
     ParseContext *pc= &m->pc;
     int i;
-    uint32_t state, next_state;
-    uint64_t state64;
-    state= pc->state;
-    state64 = pc->state64;
+    uint32_t next_state;
+    uint64_t state64 = pc->state64;
+
     if (buf_size == 0) {
         return 0;
     }
 
     for (i = 0; i < buf_size; i++) {
-        state = state << 8 | buf[i];
         state64 = state64 << 8 | buf[i];
         m->bytes_read++;
         if (m->skip_bytes) {
@@ -132,9 +130,9 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
             }
             m->fheader_read--;
         }
-        if (state == 0x0000000C && m->bytes_read >= 3) { // Indicates start of JP2 file. Check signature next.
+        if ((state64 & 0xFFFFFFFF) == 0x0000000C && m->bytes_read >= 3) { // Indicates start of JP2 file. Check signature next.
             m->fheader_read = 8;
-        } else if ((state & 0xFFFF) == 0xFF4F) {
+        } else if ((state64 & 0xFFFF) == 0xFF4F) {
             m->in_codestream = 1;
             if (!pc->frame_start_found) {
                 pc->frame_start_found = 1;
@@ -143,7 +141,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
                 reset_context(m);
                 return i - 1;
             }
-        } else if ((state & 0xFFFF) == 0xFFD9) {
+        } else if ((state64 & 0xFFFF) == 0xFFD9) {
             if (pc->frame_start_found && m->ft == jp2_file) {
                 m->skipped_codestream = 1;
             } else if (pc->frame_start_found && m->ft == j2k_cstream) {
@@ -151,11 +149,11 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
                 return i + 1; // End of frame detected, return frame size.
             }
             m->in_codestream = 0;
-        } else if (m->in_codestream && (state & 0xFFFF) == 0xFF90) { // Are we in tile part header?
+        } else if (m->in_codestream && (state64 & 0xFFFF) == 0xFF90) { // Are we in tile part header?
             m->read_tp = 8;
-        } else if (pc->frame_start_found && info_marker((state & 0xFFFF0000)>>16) && m->in_codestream && (state & 0xFFFF)) {
+        } else if (pc->frame_start_found && info_marker((state64 & 0xFFFF0000)>>16) && m->in_codestream && (state64 & 0xFFFF)) {
             // Calculate number of bytes to skip to get to end of the next marker.
-            m->skip_bytes = (state & 0xFFFF)-1;
+            m->skip_bytes = (state64 & 0xFFFF)-1;
 
             // If the next marker is an info marker, skip to the end of of the marker length.
             if (i + m->skip_bytes + 1 < buf_size) {
@@ -168,7 +166,6 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
         }
     }
 
-    pc->state = state;
     pc->state64 = state64;
     return END_NOT_FOUND;
 }
-- 
2.30.2


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[FFmpeg-devel] [PATCH 3/8] libavcodec/jpeg2000_parser: next_state is just a temporary

[Tomas Härdin]

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[-- Attachment #2: 0003-libavcodec-jpeg2000_parser-next_state-is-just-a-temp.patch --]
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From 682701613a9b816aac9e75848216e3c7e6a12974 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 11:45:23 +0200
Subject: [PATCH 3/8] libavcodec/jpeg2000_parser: next_state is just a
 temporary

---
 libavcodec/jpeg2000_parser.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index a7f72710e4..c6d8416d43 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -82,7 +82,6 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
 {
     ParseContext *pc= &m->pc;
     int i;
-    uint32_t next_state;
     uint64_t state64 = pc->state64;
 
     if (buf_size == 0) {
@@ -157,7 +156,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
 
             // If the next marker is an info marker, skip to the end of of the marker length.
             if (i + m->skip_bytes + 1 < buf_size) {
-                next_state = (buf[i + m->skip_bytes] << 8) | buf[i + m->skip_bytes + 1];
+                uint32_t next_state = (buf[i + m->skip_bytes] << 8) | buf[i + m->skip_bytes + 1];
                 if (info_marker(next_state)) {
                     // Skip an additional 2 bytes to get to the end of the marker length.
                     m->skip_bytes += 2;
-- 
2.30.2


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[FFmpeg-devel] [PATCH 4/8] libavcodec/jpeg2000_parser: LUTify info_marker()

[Tomas Härdin]

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[-- Attachment #2: 0004-libavcodec-jpeg2000_parser-LUTify-info_marker.patch --]
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From d84f106d1eac7a3ea98935d11dc65e0afe8a8fb6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 14:41:38 +0200
Subject: [PATCH 4/8] libavcodec/jpeg2000_parser: LUTify info_marker()

This speeds find_frame_end() up by 39% according to valgrind
---
 libavcodec/jpeg2000_parser.c | 26 +++++++++++++++++++-------
 1 file changed, 19 insertions(+), 7 deletions(-)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index c6d8416d43..88e4a142f8 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -65,13 +65,25 @@ static inline void reset_context(JPEG2000ParserContext *m)
 */
 static uint8_t info_marker(uint16_t marker)
 {
-    if (marker == 0xFF92 || marker == 0xFF4F ||
-        marker == 0xFF90 || marker == 0xFF93 ||
-        marker == 0xFFD9)
-        return 0;
-    else
-        if (marker > 0xFF00) return 1;
-    return 0;
+    static const uint8_t lut[256] = {
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, // 0xFF4F
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        0, 1, 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 0xFF90 0xFF92 0xFF93
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, // 0xFFD9
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+        1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+    };
+    return marker < 0xFF00 ? 0 : lut[marker & 0xFF];
 }
 
 /**
-- 
2.30.2


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[FFmpeg-devel] [PATCH 5/8] libavcodec/jpeg2000_parser: Rearrange ifs

[Tomas Härdin]

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[-- Attachment #2: 0005-libavcodec-jpeg2000_parser-Rearrange-ifs.patch --]
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From 68add7a3abb85d84e484ae58b1661d7bbf66c04d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 14:44:54 +0200
Subject: [PATCH 5/8] libavcodec/jpeg2000_parser: Rearrange ifs

A modest 8% improvement
---
 libavcodec/jpeg2000_parser.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index 88e4a142f8..bd966b3acf 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -160,9 +160,10 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
                 return i + 1; // End of frame detected, return frame size.
             }
             m->in_codestream = 0;
-        } else if (m->in_codestream && (state64 & 0xFFFF) == 0xFF90) { // Are we in tile part header?
+        } else if (m->in_codestream) {
+          if ((state64 & 0xFFFF) == 0xFF90) { // Are we in tile part header?
             m->read_tp = 8;
-        } else if (pc->frame_start_found && info_marker((state64 & 0xFFFF0000)>>16) && m->in_codestream && (state64 & 0xFFFF)) {
+          } else if (info_marker((state64 & 0xFFFF0000)>>16) && pc->frame_start_found && (state64 & 0xFFFF)) {
             // Calculate number of bytes to skip to get to end of the next marker.
             m->skip_bytes = (state64 & 0xFFFF)-1;
 
@@ -174,6 +175,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
                     m->skip_bytes += 2;
                 }
             }
+          }
         }
     }
 
-- 
2.30.2


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[FFmpeg-devel] [PATCH 6/8] libavcodec/jpeg2000_parser: Reindent

[Tomas Härdin]

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[-- Attachment #2: 0006-libavcodec-jpeg2000_parser-Reindent.patch --]
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From 96fc66ca55a306575faf6d3b17ea58aae4c6c046 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Tue, 31 May 2022 11:37:55 +0200
Subject: [PATCH 6/8] libavcodec/jpeg2000_parser: Reindent

---
 libavcodec/jpeg2000_parser.c | 26 +++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index bd966b3acf..e66ef0e1f0 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -161,21 +161,21 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
             }
             m->in_codestream = 0;
         } else if (m->in_codestream) {
-          if ((state64 & 0xFFFF) == 0xFF90) { // Are we in tile part header?
-            m->read_tp = 8;
-          } else if (info_marker((state64 & 0xFFFF0000)>>16) && pc->frame_start_found && (state64 & 0xFFFF)) {
-            // Calculate number of bytes to skip to get to end of the next marker.
-            m->skip_bytes = (state64 & 0xFFFF)-1;
-
-            // If the next marker is an info marker, skip to the end of of the marker length.
-            if (i + m->skip_bytes + 1 < buf_size) {
-                uint32_t next_state = (buf[i + m->skip_bytes] << 8) | buf[i + m->skip_bytes + 1];
-                if (info_marker(next_state)) {
-                    // Skip an additional 2 bytes to get to the end of the marker length.
-                    m->skip_bytes += 2;
+            if ((state64 & 0xFFFF) == 0xFF90) { // Are we in tile part header?
+                m->read_tp = 8;
+            } else if (info_marker((state64 & 0xFFFF0000)>>16) && pc->frame_start_found && (state64 & 0xFFFF)) {
+                // Calculate number of bytes to skip to get to end of the next marker.
+                m->skip_bytes = (state64 & 0xFFFF)-1;
+
+                // If the next marker is an info marker, skip to the end of of the marker length.
+                if (i + m->skip_bytes + 1 < buf_size) {
+                    uint32_t next_state = (buf[i + m->skip_bytes] << 8) | buf[i + m->skip_bytes + 1];
+                    if (info_marker(next_state)) {
+                        // Skip an additional 2 bytes to get to the end of the marker length.
+                        m->skip_bytes += 2;
+                    }
                 }
             }
-          }
         }
     }
 
-- 
2.30.2


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[FFmpeg-devel] [PATCH 7/8] libavcodec/jpeg2000_parser: Localize m->bytes_read

[Tomas Härdin]

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[-- Attachment #2: 0007-libavcodec-jpeg2000_parser-Localize-m-bytes_read.patch --]
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From 7b5e442033f0691bddbe2c2a0292f4abffd46c3d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 14:50:00 +0200
Subject: [PATCH 7/8] libavcodec/jpeg2000_parser: Localize m->bytes_read

Another 6%
---
 libavcodec/jpeg2000_parser.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index e66ef0e1f0..de73196855 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -95,6 +95,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
     ParseContext *pc= &m->pc;
     int i;
     uint64_t state64 = pc->state64;
+    uint64_t bytes_read = m->bytes_read;
 
     if (buf_size == 0) {
         return 0;
@@ -102,7 +103,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
 
     for (i = 0; i < buf_size; i++) {
         state64 = state64 << 8 | buf[i];
-        m->bytes_read++;
+        bytes_read++;
         if (m->skip_bytes) {
             // handle long skips
             if (m->skip_bytes > 8) {
@@ -112,7 +113,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
                 if (skip > 0) {
                     m->skip_bytes -= skip;
                     i += skip;
-                    m->bytes_read += skip;
+                    bytes_read += skip;
                 }
             }
             m->skip_bytes--;
@@ -141,7 +142,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
             }
             m->fheader_read--;
         }
-        if ((state64 & 0xFFFFFFFF) == 0x0000000C && m->bytes_read >= 3) { // Indicates start of JP2 file. Check signature next.
+        if ((state64 & 0xFFFFFFFF) == 0x0000000C && bytes_read >= 3) { // Indicates start of JP2 file. Check signature next.
             m->fheader_read = 8;
         } else if ((state64 & 0xFFFF) == 0xFF4F) {
             m->in_codestream = 1;
@@ -180,6 +181,7 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
     }
 
     pc->state64 = state64;
+    m->bytes_read = bytes_read;
     return END_NOT_FOUND;
 }
 
-- 
2.30.2


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[FFmpeg-devel] [PATCH 8/8] libavcodec/jpeg2000: Call av_codec_is_encoder() only once in init_prec()

[Tomas Härdin]

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[-- Attachment #2: 0008-libavcodec-jpeg2000-Call-av_codec_is_encoder-only-on.patch --]
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From 1485b06278f38dcda5ff83f17e0a3446949809b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Mon, 23 May 2022 11:20:57 +0200
Subject: [PATCH 8/8] libavcodec/jpeg2000: Call av_codec_is_encoder() only once
 in init_prec()

---
 libavcodec/jpeg2000.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/libavcodec/jpeg2000.c b/libavcodec/jpeg2000.c
index 0aa984bc53..0d4b18b38d 100644
--- a/libavcodec/jpeg2000.c
+++ b/libavcodec/jpeg2000.c
@@ -278,7 +278,7 @@ static int init_prec(AVCodecContext *avctx,
                      int log2_band_prec_height)
 {
     Jpeg2000Prec *prec = band->prec + precno;
-    int nb_codeblocks, cblkno;
+    int nb_codeblocks, cblkno, is_enc;
 
     prec->decoded_layers = 0;
 
@@ -336,6 +336,9 @@ static int init_prec(AVCodecContext *avctx,
     prec->cblk = av_calloc(nb_codeblocks, sizeof(*prec->cblk));
     if (!prec->cblk)
         return AVERROR(ENOMEM);
+
+    is_enc = av_codec_is_encoder(avctx->codec);
+
     for (cblkno = 0; cblkno < nb_codeblocks; cblkno++) {
         Jpeg2000Cblk *cblk = prec->cblk + cblkno;
         int Cx0, Cy0;
@@ -375,7 +378,7 @@ static int init_prec(AVCodecContext *avctx,
         cblk->lblock    = 3;
         cblk->length    = 0;
         cblk->npasses   = 0;
-        if (av_codec_is_encoder(avctx->codec)) {
+        if (is_enc) {
             cblk->layers = av_calloc(codsty->nlayers, sizeof(*cblk->layers));
             if (!cblk->layers)
                 return AVERROR(ENOMEM);
-- 
2.30.2


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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Anton Khirnov]

Quoting Tomas Härdin (2022-05-31 11:58:39)
> 
> 
> From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 11:38:25 +0200
> Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips
> 
> ---
>  libavcodec/jpeg2000_parser.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 
> diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
> index 2975e71482..9fac958dfa 100644
> --- a/libavcodec/jpeg2000_parser.c
> +++ b/libavcodec/jpeg2000_parser.c
> @@ -95,6 +95,17 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
>          state64 = state64 << 8 | buf[i];
>          m->bytes_read++;
>          if (m->skip_bytes) {
> +            // handle long skips
> +            if (m->skip_bytes > 8) {
> +                // need -9 else buf_size - i == 8 ==> i == buf_size after this,
> +                // and thus i == buf_size + 1 after the loop
> +                int64_t skip = FFMIN(m->skip_bytes - 8, buf_size - i - 9);
> +                if (skip > 0) {
> +                    m->skip_bytes -= skip;
> +                    i += skip;
> +                    m->bytes_read += skip;

Shouldn't you also update state(64)?

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Tomas Härdin]

ons 2022-06-01 klockan 11:59 +0200 skrev Anton Khirnov:
> Quoting Tomas Härdin (2022-05-31 11:58:39)
> > 
> > 
> > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00
> > 2001
> > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > Date: Fri, 20 May 2022 11:38:25 +0200
> > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long
> > skips
> > 
> > ---
> >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> > 
> > diff --git a/libavcodec/jpeg2000_parser.c
> > b/libavcodec/jpeg2000_parser.c
> > index 2975e71482..9fac958dfa 100644
> > --- a/libavcodec/jpeg2000_parser.c
> > +++ b/libavcodec/jpeg2000_parser.c
> > @@ -95,6 +95,17 @@ static int find_frame_end(JPEG2000ParserContext
> > *m, const uint8_t *buf, int buf_
> >          state64 = state64 << 8 | buf[i];
> >          m->bytes_read++;
> >          if (m->skip_bytes) {
> > +            // handle long skips
> > +            if (m->skip_bytes > 8) {
> > +                // need -9 else buf_size - i == 8 ==> i ==
> > buf_size after this,
> > +                // and thus i == buf_size + 1 after the loop
> > +                int64_t skip = FFMIN(m->skip_bytes - 8, buf_size -
> > i - 9);
> > +                if (skip > 0) {
> > +                    m->skip_bytes -= skip;
> > +                    i += skip;
> > +                    m->bytes_read += skip;
> 
> Shouldn't you also update state(64)?
> 

It gets updated after 8 more skips. Keep in mind the buffer may end
before the skip is fully done, so I can't just AV_RB64().

/Tomas

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Anton Khirnov]

Quoting Tomas Härdin (2022-06-01 14:34:57)
> ons 2022-06-01 klockan 11:59 +0200 skrev Anton Khirnov:
> > Quoting Tomas Härdin (2022-05-31 11:58:39)
> > > 
> > > 
> > > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00
> > > 2001
> > > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > > Date: Fri, 20 May 2022 11:38:25 +0200
> > > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long
> > > skips
> > > 
> > > ---
> > >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> > >  1 file changed, 11 insertions(+)
> > > 
> > > diff --git a/libavcodec/jpeg2000_parser.c
> > > b/libavcodec/jpeg2000_parser.c
> > > index 2975e71482..9fac958dfa 100644
> > > --- a/libavcodec/jpeg2000_parser.c
> > > +++ b/libavcodec/jpeg2000_parser.c
> > > @@ -95,6 +95,17 @@ static int find_frame_end(JPEG2000ParserContext
> > > *m, const uint8_t *buf, int buf_
> > >          state64 = state64 << 8 | buf[i];
> > >          m->bytes_read++;
> > >          if (m->skip_bytes) {
> > > +            // handle long skips
> > > +            if (m->skip_bytes > 8) {
> > > +                // need -9 else buf_size - i == 8 ==> i ==
> > > buf_size after this,
> > > +                // and thus i == buf_size + 1 after the loop
> > > +                int64_t skip = FFMIN(m->skip_bytes - 8, buf_size -
> > > i - 9);
> > > +                if (skip > 0) {
> > > +                    m->skip_bytes -= skip;
> > > +                    i += skip;
> > > +                    m->bytes_read += skip;
> > 
> > Shouldn't you also update state(64)?
> > 
> 
> It gets updated after 8 more skips. Keep in mind the buffer may end
> before the skip is fully done, so I can't just AV_RB64().

Ah right, nevermind then. Set looks good to me.

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 851 bytes --]

On Tue, May 31, 2022 at 11:58:39AM +0200, Tomas Härdin wrote:
> 

>  jpeg2000_parser.c |   11 +++++++++++
>  1 file changed, 11 insertions(+)
> 634546fb5a0eb281eea87ad7471c503f5bc9e8ab  0001-libavcodec-jpeg2000_parser-Speed-up-long-skips.patch
> From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 11:38:25 +0200
> Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips
> 
> ---
>  libavcodec/jpeg2000_parser.c | 11 +++++++++++
>  1 file changed, 11 insertions(+)

breaks
j2kref/codestreams_profile1/p1_04.j2k

[...]

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 1730 bytes --]

On Wed, Jun 01, 2022 at 06:21:19PM +0200, Michael Niedermayer wrote:
> On Tue, May 31, 2022 at 11:58:39AM +0200, Tomas Härdin wrote:
> > 
> 
> >  jpeg2000_parser.c |   11 +++++++++++
> >  1 file changed, 11 insertions(+)
> > 634546fb5a0eb281eea87ad7471c503f5bc9e8ab  0001-libavcodec-jpeg2000_parser-Speed-up-long-skips.patch
> > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00 2001
> > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > Date: Fri, 20 May 2022 11:38:25 +0200
> > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips
> > 
> > ---
> >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> >  1 file changed, 11 insertions(+)
> 
> breaks
> j2kref/codestreams_profile1/p1_04.j2k

[jpeg2000 @ 0x7fb0b8002600] Psot 66195 too big
[jpeg2000 @ 0x7fb0b8002600] error during processing marker segment ff90
Input #0, j2k_pipe, from 'j2kref/codestreams_profile1/p1_04.j2k':
  Duration: N/A, bitrate: N/A
  Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction 1), gray16le(12 bpc), 1024x1024, 25 fps, 25 tbr, 25 tbn
[jpeg2000 @ 0x7fb0b8003240] unsupported marker 0x97C8 at pos 0x6F0
[jpeg2000 @ 0x7fb0b8003240] Missing EOC Marker.
[jpeg2000 @ 0x7fb0b8032280] unsupported marker 0x97C8 at pos 0x6F0
[jpeg2000 @ 0x7fb0b8032280] Missing EOC Marker.
[jpeg2000 @ 0x7fb0b8006280] Psot 66195 too big
[jpeg2000 @ 0x7fb0b8006280] error during processing marker segment ff90


[...]


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Re: [FFmpeg-devel] [PATCH 8/8] libavcodec/jpeg2000: Call av_codec_is_encoder() only once in init_prec()

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 715 bytes --]

On Tue, May 31, 2022 at 12:01:35PM +0200, Tomas Härdin wrote:
> 

>  jpeg2000.c |    7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 05721f386bc015c4402f70bdb14dd6a8931a4429  0008-libavcodec-jpeg2000-Call-av_codec_is_encoder-only-on.patch
> From 1485b06278f38dcda5ff83f17e0a3446949809b6 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Mon, 23 May 2022 11:20:57 +0200
> Subject: [PATCH 8/8] libavcodec/jpeg2000: Call av_codec_is_encoder() only once
>  in init_prec()

LGTM

thx

[...]

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Re: [FFmpeg-devel] [PATCH 5/8] libavcodec/jpeg2000_parser: Rearrange ifs

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 817 bytes --]

On Tue, May 31, 2022 at 12:00:26PM +0200, Tomas Härdin wrote:
> 

>  jpeg2000_parser.c |    6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)
> b0a91cd73f5b4887a9d87518bc16ed6e1f104a39  0005-libavcodec-jpeg2000_parser-Rearrange-ifs.patch
> From 68add7a3abb85d84e484ae58b1661d7bbf66c04d Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 14:44:54 +0200
> Subject: [PATCH 5/8] libavcodec/jpeg2000_parser: Rearrange ifs
> 
> A modest 8% improvement
> ---
>  libavcodec/jpeg2000_parser.c | 6 ++++--
>  1 file changed, 4 insertions(+), 2 deletions(-)

LGTM

thx

[...]

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Re: [FFmpeg-devel] [PATCH 7/8] libavcodec/jpeg2000_parser: Localize m->bytes_read

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 1063 bytes --]

On Tue, May 31, 2022 at 12:01:12PM +0200, Tomas Härdin wrote:
> 

>  jpeg2000_parser.c |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> a16f2b29057a6e89ef7a03529fb4c66ecc704094  0007-libavcodec-jpeg2000_parser-Localize-m-bytes_read.patch
> From 7b5e442033f0691bddbe2c2a0292f4abffd46c3d Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 14:50:00 +0200
> Subject: [PATCH 7/8] libavcodec/jpeg2000_parser: Localize m->bytes_read
> 
> Another 6%
> ---
>  libavcodec/jpeg2000_parser.c | 8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)

This didnt apply without #1 so i could not test but it should be ok

thx

[...]

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Re: [FFmpeg-devel] [PATCH 4/8] libavcodec/jpeg2000_parser: LUTify info_marker()

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 1016 bytes --]

On Tue, May 31, 2022 at 12:00:05PM +0200, Tomas Härdin wrote:
> 

>  jpeg2000_parser.c |   26 +++++++++++++++++++-------
>  1 file changed, 19 insertions(+), 7 deletions(-)
> 7661a5b239a94ccba349c916a390d957479a9771  0004-libavcodec-jpeg2000_parser-LUTify-info_marker.patch
> From d84f106d1eac7a3ea98935d11dc65e0afe8a8fb6 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 14:41:38 +0200
> Subject: [PATCH 4/8] libavcodec/jpeg2000_parser: LUTify info_marker()
> 
> This speeds find_frame_end() up by 39% according to valgrind
> ---
>  libavcodec/jpeg2000_parser.c | 26 +++++++++++++++++++-------
>  1 file changed, 19 insertions(+), 7 deletions(-)

LGTM

thx

[...]

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Re: [FFmpeg-devel] [PATCH 3/8] libavcodec/jpeg2000_parser: next_state is just a temporary

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 797 bytes --]

On Tue, May 31, 2022 at 11:59:42AM +0200, Tomas Härdin wrote:
> 

>  jpeg2000_parser.c |    3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)
> c4714ab68e0049d0ee84e5c7f89582c5426c10ad  0003-libavcodec-jpeg2000_parser-next_state-is-just-a-temp.patch
> From 682701613a9b816aac9e75848216e3c7e6a12974 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 11:45:23 +0200
> Subject: [PATCH 3/8] libavcodec/jpeg2000_parser: next_state is just a
>  temporary
> 
> ---
>  libavcodec/jpeg2000_parser.c | 3 +--
>  1 file changed, 1 insertion(+), 2 deletions(-)

LGTM

thx

[...]

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Re: [FFmpeg-devel] [PATCH 2/8] libavcodec/jpeg2000_parser: Simplify, fix reset_context()

[Michael Niedermayer]

[-- Attachment #1.1: Type: text/plain, Size: 972 bytes --]

On Tue, May 31, 2022 at 11:59:15AM +0200, Tomas Härdin wrote:
> 

>  jpeg2000_parser.c |   23 ++++++++++-------------
>  1 file changed, 10 insertions(+), 13 deletions(-)
> 54fa89b694ebf1b0fb5adf18a5f53a2aabcbc9c9  0002-libavcodec-jpeg2000_parser-Simplify-fix-reset_contex.patch
> From 4bf4593c0d4cbc36d8fcaabe9e36b39134403c34 Mon Sep 17 00:00:00 2001
> From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> Date: Fri, 20 May 2022 11:44:06 +0200
> Subject: [PATCH 2/8] libavcodec/jpeg2000_parser: Simplify, fix reset_context()
> 
> ---
>  libavcodec/jpeg2000_parser.c | 23 ++++++++++-------------
>  1 file changed, 10 insertions(+), 13 deletions(-)

should be ok

thx

[...]

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Tomas Härdin]

[-- Attachment #1: Type: text/plain, Size: 1792 bytes --]

ons 2022-06-01 klockan 18:23 +0200 skrev Michael Niedermayer:
> On Wed, Jun 01, 2022 at 06:21:19PM +0200, Michael Niedermayer wrote:
> > On Tue, May 31, 2022 at 11:58:39AM +0200, Tomas Härdin wrote:
> > > 
> > 
> > >  jpeg2000_parser.c |   11 +++++++++++
> > >  1 file changed, 11 insertions(+)
> > > 634546fb5a0eb281eea87ad7471c503f5bc9e8ab  0001-libavcodec-
> > > jpeg2000_parser-Speed-up-long-skips.patch
> > > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00
> > > 2001
> > > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > > Date: Fri, 20 May 2022 11:38:25 +0200
> > > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long
> > > skips
> > > 
> > > ---
> > >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> > >  1 file changed, 11 insertions(+)
> > 
> > breaks
> > j2kref/codestreams_profile1/p1_04.j2k
> 
> [jpeg2000 @ 0x7fb0b8002600] Psot 66195 too big
> [jpeg2000 @ 0x7fb0b8002600] error during processing marker segment
> ff90
> Input #0, j2k_pipe, from 'j2kref/codestreams_profile1/p1_04.j2k':
>   Duration: N/A, bitrate: N/A
>   Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction 1),
> gray16le(12 bpc), 1024x1024, 25 fps, 25 tbr, 25 tbn
> [jpeg2000 @ 0x7fb0b8003240] unsupported marker 0x97C8 at pos 0x6F0
> [jpeg2000 @ 0x7fb0b8003240] Missing EOC Marker.
> [jpeg2000 @ 0x7fb0b8032280] unsupported marker 0x97C8 at pos 0x6F0
> [jpeg2000 @ 0x7fb0b8032280] Missing EOC Marker.
> [jpeg2000 @ 0x7fb0b8006280] Psot 66195 too big
> [jpeg2000 @ 0x7fb0b8006280] error during processing marker segment
> ff90

Took a while to figure out, but this is due to buf_size - i - 9 being
changed to unsigned because of the uint32_t. Try attached patch. The
rest of the set should work with it.

Can we roll these tests into FATE?

/Tomas

[-- Attachment #2: 0001-libavcodec-jpeg2000_parser-Speed-up-long-skips.patch --]
[-- Type: text/x-patch, Size: 1272 bytes --]

From e6a35973456d132adc4ae87904dfb3c31eff0fd5 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
Date: Fri, 20 May 2022 11:38:25 +0200
Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

---
 libavcodec/jpeg2000_parser.c | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/libavcodec/jpeg2000_parser.c b/libavcodec/jpeg2000_parser.c
index 2975e71482..34a5487e90 100644
--- a/libavcodec/jpeg2000_parser.c
+++ b/libavcodec/jpeg2000_parser.c
@@ -95,6 +95,17 @@ static int find_frame_end(JPEG2000ParserContext *m, const uint8_t *buf, int buf_
         state64 = state64 << 8 | buf[i];
         m->bytes_read++;
         if (m->skip_bytes) {
+            // handle long skips
+            if (m->skip_bytes > 8) {
+                // need -9 else buf_size - i == 8 ==> i == buf_size after this,
+                // and thus i == buf_size + 1 after the loop
+                int skip = FFMIN(FFMIN((int64_t)m->skip_bytes - 8, buf_size - i - 9), INT_MAX);
+                if (skip > 0) {
+                    m->skip_bytes -= skip;
+                    i += skip;
+                    m->bytes_read += skip;
+                }
+            }
             m->skip_bytes--;
             continue;
         }
-- 
2.30.2


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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Michael Niedermayer]

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On Thu, Jun 02, 2022 at 11:54:39AM +0200, Tomas Härdin wrote:
> ons 2022-06-01 klockan 18:23 +0200 skrev Michael Niedermayer:
> > On Wed, Jun 01, 2022 at 06:21:19PM +0200, Michael Niedermayer wrote:
> > > On Tue, May 31, 2022 at 11:58:39AM +0200, Tomas Härdin wrote:
> > > > 
> > > 
> > > >  jpeg2000_parser.c |   11 +++++++++++
> > > >  1 file changed, 11 insertions(+)
> > > > 634546fb5a0eb281eea87ad7471c503f5bc9e8ab  0001-libavcodec-
> > > > jpeg2000_parser-Speed-up-long-skips.patch
> > > > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17 00:00:00
> > > > 2001
> > > > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > > > Date: Fri, 20 May 2022 11:38:25 +0200
> > > > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long
> > > > skips
> > > > 
> > > > ---
> > > >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> > > >  1 file changed, 11 insertions(+)
> > > 
> > > breaks
> > > j2kref/codestreams_profile1/p1_04.j2k
> > 
> > [jpeg2000 @ 0x7fb0b8002600] Psot 66195 too big
> > [jpeg2000 @ 0x7fb0b8002600] error during processing marker segment
> > ff90
> > Input #0, j2k_pipe, from 'j2kref/codestreams_profile1/p1_04.j2k':
> >   Duration: N/A, bitrate: N/A
> >   Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction 1),
> > gray16le(12 bpc), 1024x1024, 25 fps, 25 tbr, 25 tbn
> > [jpeg2000 @ 0x7fb0b8003240] unsupported marker 0x97C8 at pos 0x6F0
> > [jpeg2000 @ 0x7fb0b8003240] Missing EOC Marker.
> > [jpeg2000 @ 0x7fb0b8032280] unsupported marker 0x97C8 at pos 0x6F0
> > [jpeg2000 @ 0x7fb0b8032280] Missing EOC Marker.
> > [jpeg2000 @ 0x7fb0b8006280] Psot 66195 too big
> > [jpeg2000 @ 0x7fb0b8006280] error during processing marker segment
> > ff90
> 
> Took a while to figure out, but this is due to buf_size - i - 9 being
> changed to unsigned because of the uint32_t. Try attached patch. The
> rest of the set should work with it.

works fine here


> 
> Can we roll these tests into FATE?

feel free to do so. 
ill test if someone posts a patch

thx

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Those who are too smart to engage in politics are punished by being
governed by those who are dumber. -- Plato 

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Tomas Härdin]

tor 2022-06-02 klockan 21:19 +0200 skrev Michael Niedermayer:
> On Thu, Jun 02, 2022 at 11:54:39AM +0200, Tomas Härdin wrote:
> > ons 2022-06-01 klockan 18:23 +0200 skrev Michael Niedermayer:
> > > On Wed, Jun 01, 2022 at 06:21:19PM +0200, Michael Niedermayer
> > > wrote:
> > > > On Tue, May 31, 2022 at 11:58:39AM +0200, Tomas Härdin wrote:
> > > > > 
> > > > 
> > > > >  jpeg2000_parser.c |   11 +++++++++++
> > > > >  1 file changed, 11 insertions(+)
> > > > > 634546fb5a0eb281eea87ad7471c503f5bc9e8ab  0001-libavcodec-
> > > > > jpeg2000_parser-Speed-up-long-skips.patch
> > > > > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17
> > > > > 00:00:00
> > > > > 2001
> > > > > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > > > > Date: Fri, 20 May 2022 11:38:25 +0200
> > > > > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up
> > > > > long
> > > > > skips
> > > > > 
> > > > > ---
> > > > >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> > > > >  1 file changed, 11 insertions(+)
> > > > 
> > > > breaks
> > > > j2kref/codestreams_profile1/p1_04.j2k
> > > 
> > > [jpeg2000 @ 0x7fb0b8002600] Psot 66195 too big
> > > [jpeg2000 @ 0x7fb0b8002600] error during processing marker
> > > segment
> > > ff90
> > > Input #0, j2k_pipe, from 'j2kref/codestreams_profile1/p1_04.j2k':
> > >   Duration: N/A, bitrate: N/A
> > >   Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction
> > > 1),
> > > gray16le(12 bpc), 1024x1024, 25 fps, 25 tbr, 25 tbn
> > > [jpeg2000 @ 0x7fb0b8003240] unsupported marker 0x97C8 at pos
> > > 0x6F0
> > > [jpeg2000 @ 0x7fb0b8003240] Missing EOC Marker.
> > > [jpeg2000 @ 0x7fb0b8032280] unsupported marker 0x97C8 at pos
> > > 0x6F0
> > > [jpeg2000 @ 0x7fb0b8032280] Missing EOC Marker.
> > > [jpeg2000 @ 0x7fb0b8006280] Psot 66195 too big
> > > [jpeg2000 @ 0x7fb0b8006280] error during processing marker
> > > segment
> > > ff90
> > 
> > Took a while to figure out, but this is due to buf_size - i - 9
> > being
> > changed to unsigned because of the uint32_t. Try attached patch.
> > The
> > rest of the set should work with it.
> 
> works fine here

Great

> > Can we roll these tests into FATE?
> 
> feel free to do so. 
> ill test if someone posts a patch

How are you testing them? Just decoding and checking that the output is
the same as some reference output? Just looking for non-zero exit code?

/Tomas

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Michael Niedermayer]

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On Fri, Jun 03, 2022 at 11:17:54AM +0200, Tomas Härdin wrote:
> tor 2022-06-02 klockan 21:19 +0200 skrev Michael Niedermayer:
> > On Thu, Jun 02, 2022 at 11:54:39AM +0200, Tomas Härdin wrote:
> > > ons 2022-06-01 klockan 18:23 +0200 skrev Michael Niedermayer:
> > > > On Wed, Jun 01, 2022 at 06:21:19PM +0200, Michael Niedermayer
> > > > wrote:
> > > > > On Tue, May 31, 2022 at 11:58:39AM +0200, Tomas Härdin wrote:
> > > > > > 
> > > > > 
> > > > > >  jpeg2000_parser.c |   11 +++++++++++
> > > > > >  1 file changed, 11 insertions(+)
> > > > > > 634546fb5a0eb281eea87ad7471c503f5bc9e8ab  0001-libavcodec-
> > > > > > jpeg2000_parser-Speed-up-long-skips.patch
> > > > > > From fedd7f9ae2c691a25c37be935d7547be61d46017 Mon Sep 17
> > > > > > 00:00:00
> > > > > > 2001
> > > > > > From: =?UTF-8?q?Tomas=20H=C3=A4rdin?= <git@haerdin.se>
> > > > > > Date: Fri, 20 May 2022 11:38:25 +0200
> > > > > > Subject: [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up
> > > > > > long
> > > > > > skips
> > > > > > 
> > > > > > ---
> > > > > >  libavcodec/jpeg2000_parser.c | 11 +++++++++++
> > > > > >  1 file changed, 11 insertions(+)
> > > > > 
> > > > > breaks
> > > > > j2kref/codestreams_profile1/p1_04.j2k
> > > > 
> > > > [jpeg2000 @ 0x7fb0b8002600] Psot 66195 too big
> > > > [jpeg2000 @ 0x7fb0b8002600] error during processing marker
> > > > segment
> > > > ff90
> > > > Input #0, j2k_pipe, from 'j2kref/codestreams_profile1/p1_04.j2k':
> > > >   Duration: N/A, bitrate: N/A
> > > >   Stream #0:0: Video: jpeg2000 (JPEG 2000 codestream restriction
> > > > 1),
> > > > gray16le(12 bpc), 1024x1024, 25 fps, 25 tbr, 25 tbn
> > > > [jpeg2000 @ 0x7fb0b8003240] unsupported marker 0x97C8 at pos
> > > > 0x6F0
> > > > [jpeg2000 @ 0x7fb0b8003240] Missing EOC Marker.
> > > > [jpeg2000 @ 0x7fb0b8032280] unsupported marker 0x97C8 at pos
> > > > 0x6F0
> > > > [jpeg2000 @ 0x7fb0b8032280] Missing EOC Marker.
> > > > [jpeg2000 @ 0x7fb0b8006280] Psot 66195 too big
> > > > [jpeg2000 @ 0x7fb0b8006280] error during processing marker
> > > > segment
> > > > ff90
> > > 
> > > Took a while to figure out, but this is due to buf_size - i - 9
> > > being
> > > changed to unsigned because of the uint32_t. Try attached patch.
> > > The
> > > rest of the set should work with it.
> > 
> > works fine here
> 
> Great
> 
> > > Can we roll these tests into FATE?
> > 
> > feel free to do so. 
> > ill test if someone posts a patch
> 
> How are you testing them? Just decoding and checking that the output is
> the same as some reference output? 

yes


> Just looking for non-zero exit code?

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Any man who breaks a law that conscience tells him is unjust and willingly 
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the community on the injustice of the law is at that moment expressing the 
very highest respect for law. - Martin Luther King Jr

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Re: [FFmpeg-devel] [PATCH 1/8] libavcodec/jpeg2000_parser: Speed up long skips

[Tomas Härdin]

Pushed all except patch 8/8 because I'm working on something better

/Tomas

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