From d2f43ca998bc0c92e798078d11e30ca34b5e8144 Mon Sep 17 00:00:00 2001
From: Aurelien Jacobs <aurel@gnuage.org>
Date: Sat, 19 May 2007 00:53:41 +0000
Subject: [PATCH] move mjpega_dump_header bitstream filter in its own file
Originally committed as revision 9068 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
libavcodec/Makefile | 2 +-
libavcodec/mjpega_dump_header_bsf.c | 92 +++++++++++++++++++++++++++++
libavcodec/mjpegdec.c | 64 --------------------
3 files changed, 93 insertions(+), 65 deletions(-)
create mode 100644 libavcodec/mjpega_dump_header_bsf.c
diff --git a/libavcodec/Makefile b/libavcodec/Makefile
index 7e66a964ac5..f20302cacc8 100644
--- a/libavcodec/Makefile
+++ b/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
diff --git a/libavcodec/mjpega_dump_header_bsf.c b/libavcodec/mjpega_dump_header_bsf.c
new file mode 100644
index 00000000000..a3f0131742e
--- /dev/null
+++ b/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,
+};
diff --git a/libavcodec/mjpegdec.c b/libavcodec/mjpegdec.c
index 274dae7946e..dc0b4eba296 100644
--- a/libavcodec/mjpegdec.c
+++ b/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
--
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