move mjpega_dump_header bitstream filter in its own file

Originally committed as revision 9068 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/Makefile

@@ -309,7 +309,7 @@ OBJS-$(CONFIG_REMOVE_EXTRADATA_BSF)    += remove_extradata_bsf.o
 OBJS-$(CONFIG_NOISE_BSF)               += noise_bsf.o
 OBJS-$(CONFIG_MP3_HEADER_COMPRESS_BSF) += mp3_header_compress_bsf.o
 OBJS-$(CONFIG_MP3_HEADER_DECOMPRESS_BSF) += mp3_header_decompress_bsf.o mpegaudiodata.o
-OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF)  += mjpegdec.o mjpeg.o jpeglsdec.o jpegls.o
+OBJS-$(CONFIG_MJPEGA_DUMP_HEADER_BSF)  += mjpega_dump_header_bsf.o
 OBJS-$(CONFIG_IMX_DUMP_HEADER_BSF)     += imx_dump_header_bsf.o
 
 OBJS-$(HAVE_PTHREADS)                  += pthread.o

libavcodec/mjpega_dump_header_bsf.c

@@ -0,0 +1,92 @@
+/*
+ * MJPEG A dump header bitstream filter
+ * Copyright (c) 2006 Baptiste Coudurier.
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file mjpega_dump_header_bsf.c
+ * MJPEG A dump header bitstream filter
+ * modifies bitstream to be decoded by quicktime
+ */
+
+#include "avcodec.h"
+#include "bytestream.h"
+#include "mjpeg.h"
+
+
+static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
+                              uint8_t **poutbuf, int *poutbuf_size,
+                              const uint8_t *buf, int buf_size, int keyframe)
+{
+    uint8_t *poutbufp;
+    int i;
+
+    if (avctx->codec_id != CODEC_ID_MJPEG) {
+        av_log(avctx, AV_LOG_ERROR, "mjpega bitstream filter only applies to mjpeg codec\n");
+        return 0;
+    }
+
+    *poutbuf_size = 0;
+    *poutbuf = av_malloc(buf_size + 44 + FF_INPUT_BUFFER_PADDING_SIZE);
+    poutbufp = *poutbuf;
+    bytestream_put_byte(&poutbufp, 0xff);
+    bytestream_put_byte(&poutbufp, SOI);
+    bytestream_put_byte(&poutbufp, 0xff);
+    bytestream_put_byte(&poutbufp, APP1);
+    bytestream_put_be16(&poutbufp, 42); /* size */
+    bytestream_put_be32(&poutbufp, 0);
+    bytestream_put_buffer(&poutbufp, "mjpg", 4);
+    bytestream_put_be32(&poutbufp, buf_size + 44); /* field size */
+    bytestream_put_be32(&poutbufp, buf_size + 44); /* pad field size */
+    bytestream_put_be32(&poutbufp, 0);             /* next ptr */
+
+    for (i = 0; i < buf_size - 1; i++) {
+        if (buf[i] == 0xff) {
+            switch (buf[i + 1]) {
+            case DQT:  /* quant off */
+            case DHT:  /* huff  off */
+            case SOF0: /* image off */
+                bytestream_put_be32(&poutbufp, i + 46);
+                break;
+            case SOS:
+                bytestream_put_be32(&poutbufp, i + 46); /* scan off */
+                bytestream_put_be32(&poutbufp, i + 46 + AV_RB16(buf + i + 2)); /* data off */
+                bytestream_put_buffer(&poutbufp, buf + 2, buf_size - 2); /* skip already written SOI */
+                *poutbuf_size = poutbufp - *poutbuf;
+                return 1;
+            case APP1:
+                if (i + 8 < buf_size && AV_RL32(buf + i + 8) == ff_get_fourcc("mjpg")) {
+                    av_log(avctx, AV_LOG_ERROR, "bitstream already formatted\n");
+                    memcpy(*poutbuf, buf, buf_size);
+                    *poutbuf_size = buf_size;
+                    return 1;
+                }
+            }
+        }
+    }
+    av_freep(poutbuf);
+    av_log(avctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
+    return 0;
+}
+
+AVBitStreamFilter mjpega_dump_header_bsf = {
+    "mjpegadump",
+    0,
+    mjpega_dump_header,
+};

libavcodec/mjpegdec.c

@@ -35,7 +35,6 @@
 
 #include "avcodec.h"
 #include "dsputil.h"
-#include "bytestream.h"
 #include "mjpeg.h"
 #include "jpeglsdec.h"
 
@@ -1588,61 +1587,6 @@ static int mjpeg_decode_end(AVCodecContext *avctx)
     return 0;
 }
 
-static int mjpega_dump_header(AVBitStreamFilterContext *bsfc, AVCodecContext *avctx, const char *args,
-                              uint8_t **poutbuf, int *poutbuf_size,
-                              const uint8_t *buf, int buf_size, int keyframe)
-{
-    uint8_t *poutbufp;
-    int i;
-
-    if (avctx->codec_id != CODEC_ID_MJPEG) {
-        av_log(avctx, AV_LOG_ERROR, "mjpega bitstream filter only applies to mjpeg codec\n");
-        return 0;
-    }
-
-    *poutbuf_size = 0;
-    *poutbuf = av_malloc(buf_size + 44 + FF_INPUT_BUFFER_PADDING_SIZE);
-    poutbufp = *poutbuf;
-    bytestream_put_byte(&poutbufp, 0xff);
-    bytestream_put_byte(&poutbufp, SOI);
-    bytestream_put_byte(&poutbufp, 0xff);
-    bytestream_put_byte(&poutbufp, APP1);
-    bytestream_put_be16(&poutbufp, 42); /* size */
-    bytestream_put_be32(&poutbufp, 0);
-    bytestream_put_buffer(&poutbufp, "mjpg", 4);
-    bytestream_put_be32(&poutbufp, buf_size + 44); /* field size */
-    bytestream_put_be32(&poutbufp, buf_size + 44); /* pad field size */
-    bytestream_put_be32(&poutbufp, 0);             /* next ptr */
-
-    for (i = 0; i < buf_size - 1; i++) {
-        if (buf[i] == 0xff) {
-            switch (buf[i + 1]) {
-            case DQT:  /* quant off */
-            case DHT:  /* huff  off */
-            case SOF0: /* image off */
-                bytestream_put_be32(&poutbufp, i + 46);
-                break;
-            case SOS:
-                bytestream_put_be32(&poutbufp, i + 46); /* scan off */
-                bytestream_put_be32(&poutbufp, i + 46 + AV_RB16(buf + i + 2)); /* data off */
-                bytestream_put_buffer(&poutbufp, buf + 2, buf_size - 2); /* skip already written SOI */
-                *poutbuf_size = poutbufp - *poutbuf;
-                return 1;
-            case APP1:
-                if (i + 8 < buf_size && AV_RL32(buf + i + 8) == ff_get_fourcc("mjpg")) {
-                    av_log(avctx, AV_LOG_ERROR, "bitstream already formatted\n");
-                    memcpy(*poutbuf, buf, buf_size);
-                    *poutbuf_size = buf_size;
-                    return 1;
-                }
-            }
-        }
-    }
-    av_freep(poutbuf);
-    av_log(avctx, AV_LOG_ERROR, "could not find SOS marker in bitstream\n");
-    return 0;
-}
-
 AVCodec mjpeg_decoder = {
     "mjpeg",
     CODEC_TYPE_VIDEO,
@@ -1694,11 +1638,3 @@ AVCodec sp5x_decoder = {
     CODEC_CAP_DR1,
     NULL
 };
-
-#ifdef CONFIG_MJPEGA_DUMP_HEADER_BSF
-AVBitStreamFilter mjpega_dump_header_bsf = {
-    "mjpegadump",
-    0,
-    mjpega_dump_header,
-};
-#endif