hvirtual/quicktime/jpeg_old.c File Reference

#include <stdio.h>
#include "jpeg_old.h"
#include "quicktime.h"

Include dependency graph for jpeg_old.c:

Go to the source code of this file.

Defines

#define M_SOF0   0xc0

#define M_SOF1   0xc1

#define M_SOF2   0xc2

#define M_SOF3   0xc3

#define M_SOF5   0xc5

#define M_SOF6   0xc6

#define M_SOF7   0xc7

#define M_JPG   0xc8

#define M_SOF9   0xc9

#define M_SOF10   0xca

#define M_SOF11   0xcb

#define M_SOF13   0xcd

#define M_SOF14   0xce

#define M_SOF15   0xcf

#define M_DHT   0xc4

#define M_DAC   0xcc

#define M_RST0   0xd0

#define M_RST1   0xd1

#define M_RST2   0xd2

#define M_RST3   0xd3

#define M_RST4   0xd4

#define M_RST5   0xd5

#define M_RST6   0xd6

#define M_RST7   0xd7

#define M_SOI   0xd8

#define M_EOI   0xd9

#define M_SOS   0xda

#define M_DQT   0xdb

#define M_DNL   0xdc

#define M_DRI   0xdd

#define M_DHP   0xde

#define M_EXP   0xdf

#define M_APP0   0xe0

#define M_APP1   0xe1

#define M_APP2   0xe2

#define M_APP3   0xe3

#define M_APP4   0xe4

#define M_APP5   0xe5

#define M_APP6   0xe6

#define M_APP7   0xe7

#define M_APP8   0xe8

#define M_APP9   0xe9

#define M_APP10   0xea

#define M_APP11   0xeb

#define M_APP12   0xec

#define M_APP13   0xed

#define M_APP14   0xee

#define M_APP15   0xef

#define M_JPG0   0xf0

#define M_JPG13   0xfd

#define M_COM   0xfe

#define M_TEM   0x01

#define M_ERROR   0x100

Functions

my_error_exit (j_common_ptr cinfo)

void quicktime_jpeg_delete_compress_engine (mjpa_compress_engine *compressor)

void quicktime_endcompressor_jpeg (mjpa_compress_engine *engine)

static int quicktime_delete_codec_jpeg (quicktime_video_map_t *vtrack)

static int quicktime_read_int32_jpeg (char **data, int *length)

static int quicktime_write_int32_jpeg (char **data, int *length, int value)

static int quicktime_read_int16_jpeg (char **data, int *length)

static int quicktime_readbyte_jpeg (char **data, int *length)

int quicktime_read_markers_jpeg (quicktime_mjpeg_hdr *mjpeg_hdr, struct jpeg_decompress_struct *jpeg_decompress)

static void quicktime_skipmarker_jpeg (char **buffer_ptr, int *buffer_size, int *len)

int quicktime_getmarker_jpeg (char **buffer_ptr, int *buffer_size, int *len)

int quicktime_fixmarker_jpeg (quicktime_mjpeg_hdr *mjpeg_hdr, char *buffer, long output_size, int write_next_offset)

void quicktime_create_mjpa_objects (mjpa_decompress_engine *engine)

void quicktime_delete_mjpa_objects (mjpa_decompress_engine *engine)

void quicktime_decompressor_jpeg (mjpa_decompress_engine *engine)

int quicktime_startdecompressor_jpeg (mjpa_decompress_engine *engine)

int quicktime_enddecompressor_jpeg (mjpa_decompress_engine *engine)

int quicktime_decompressfield_jpeg (mjpa_decompress_engine *engine, char *input_ptr, long input_size, unsigned char **row_pointers, int markers_only, int resume)

int quicktime_decompresswait_jpeg (mjpa_decompress_engine *engine)

static int quicktime_decode_jpeg (quicktime_t *file, unsigned char **row_pointers, int track)

unsigned char * quicktime_compress_jpeg (mjpa_compress_engine *engine, unsigned char **row_pointers, long *image_size, int write_next_offset)

void quicktime_compressor_jpeg (mjpa_compress_engine *engine)

void quicktime_startcompressor_jpeg (mjpa_compress_engine *engine)

void quicktime_compressfield_jpeg (mjpa_compress_engine *engine, unsigned char **row_pointers, int write_next_offset)

void quicktime_compresswait_jpeg (mjpa_compress_engine *engine)

mjpa_compress_engine * quicktime_jpeg_new_compress_engine (int width, int height, int quality, int use_float, int interlaced, int is_mjpa, int field_number)

static int quicktime_encode_jpeg (quicktime_t *file, unsigned char **row_pointers, int track)

Define Documentation

#define M_APP0 0xe0

Definition at line 38 of file jpeg_old.c.

#define M_APP1 0xe1

Definition at line 39 of file jpeg_old.c.

#define M_APP10 0xea

Definition at line 48 of file jpeg_old.c.

#define M_APP11 0xeb

Definition at line 49 of file jpeg_old.c.

#define M_APP12 0xec

Definition at line 50 of file jpeg_old.c.

#define M_APP13 0xed

Definition at line 51 of file jpeg_old.c.

#define M_APP14 0xee

Definition at line 52 of file jpeg_old.c.

#define M_APP15 0xef

Definition at line 53 of file jpeg_old.c.

#define M_APP2 0xe2

Definition at line 40 of file jpeg_old.c.

#define M_APP3 0xe3

Definition at line 41 of file jpeg_old.c.

#define M_APP4 0xe4

Definition at line 42 of file jpeg_old.c.

#define M_APP5 0xe5

Definition at line 43 of file jpeg_old.c.

#define M_APP6 0xe6

Definition at line 44 of file jpeg_old.c.

#define M_APP7 0xe7

Definition at line 45 of file jpeg_old.c.

#define M_APP8 0xe8

Definition at line 46 of file jpeg_old.c.

#define M_APP9 0xe9

Definition at line 47 of file jpeg_old.c.

#define M_COM 0xfe

Definition at line 56 of file jpeg_old.c.

#define M_DAC 0xcc

Definition at line 21 of file jpeg_old.c.

#define M_DHP 0xde

Definition at line 36 of file jpeg_old.c.

#define M_DHT 0xc4

Definition at line 20 of file jpeg_old.c.

#define M_DNL 0xdc

Definition at line 34 of file jpeg_old.c.

#define M_DQT 0xdb

Definition at line 33 of file jpeg_old.c.

#define M_DRI 0xdd

Definition at line 35 of file jpeg_old.c.

#define M_EOI 0xd9

Definition at line 31 of file jpeg_old.c.

#define M_ERROR 0x100

Definition at line 58 of file jpeg_old.c.

#define M_EXP 0xdf

Definition at line 37 of file jpeg_old.c.

#define M_JPG 0xc8

Definition at line 13 of file jpeg_old.c.

#define M_JPG0 0xf0

Definition at line 54 of file jpeg_old.c.

#define M_JPG13 0xfd

Definition at line 55 of file jpeg_old.c.

#define M_RST0 0xd0

Definition at line 22 of file jpeg_old.c.

#define M_RST1 0xd1

Definition at line 23 of file jpeg_old.c.

#define M_RST2 0xd2

Definition at line 24 of file jpeg_old.c.

#define M_RST3 0xd3

Definition at line 25 of file jpeg_old.c.

#define M_RST4 0xd4

Definition at line 26 of file jpeg_old.c.

#define M_RST5 0xd5

Definition at line 27 of file jpeg_old.c.

#define M_RST6 0xd6

Definition at line 28 of file jpeg_old.c.

#define M_RST7 0xd7

Definition at line 29 of file jpeg_old.c.

#define M_SOF0 0xc0

Definition at line 6 of file jpeg_old.c.

#define M_SOF1 0xc1

Definition at line 7 of file jpeg_old.c.

#define M_SOF10 0xca

Definition at line 15 of file jpeg_old.c.

#define M_SOF11 0xcb

Definition at line 16 of file jpeg_old.c.

#define M_SOF13 0xcd

Definition at line 17 of file jpeg_old.c.

#define M_SOF14 0xce

Definition at line 18 of file jpeg_old.c.

#define M_SOF15 0xcf

Definition at line 19 of file jpeg_old.c.

#define M_SOF2 0xc2

Definition at line 8 of file jpeg_old.c.

#define M_SOF3 0xc3

Definition at line 9 of file jpeg_old.c.

#define M_SOF5 0xc5

Definition at line 10 of file jpeg_old.c.

#define M_SOF6 0xc6

Definition at line 11 of file jpeg_old.c.

#define M_SOF7 0xc7

Definition at line 12 of file jpeg_old.c.

#define M_SOF9 0xc9

Definition at line 14 of file jpeg_old.c.

#define M_SOI 0xd8

Definition at line 30 of file jpeg_old.c.

#define M_SOS 0xda

Definition at line 32 of file jpeg_old.c.

#define M_TEM 0x01

Definition at line 57 of file jpeg_old.c.

Function Documentation

my_error_exit ( j_common_ptr cinfo )

Definition at line 63 of file jpeg_old.c.

References my_error_mgr::setjmp_buffer.

Referenced by quicktime_create_mjpa_objects().

unsigned char* quicktime_compress_jpeg	(	mjpa_compress_engine *	engine,
		unsigned char **	row_pointers,
		long *	image_size,
		int	write_next_offset
	)

Definition at line 602 of file jpeg_old.c.

References mjpa_compress_engine::height, mjpa_compress_engine::interlaced, mjpa_compress_engine::is_mjpa, jpeg_buffer_dest(), mjpa_compress_engine::jpeg_compress, mjpa_compress_engine::mjpeg_hdr, quicktime_mjpeg_hdr::mjpeg_marker, mjpa_compress_engine::output_buffer, mjpa_compress_engine::output_size, quicktime_fixmarker_jpeg(), QUICKTIME_JPEG_MARKSIZE, and TRUE.

Referenced by quicktime_compressor_jpeg().

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void quicktime_compressfield_jpeg	(	mjpa_compress_engine *	engine,
		unsigned char **	row_pointers,
		int	write_next_offset
	)

Definition at line 696 of file jpeg_old.c.

References mjpa_compress_engine::input_lock, mjpa_compress_engine::row_pointers, and mjpa_compress_engine::write_next_offset.

Referenced by quicktime_encode_jpeg().

void quicktime_compressor_jpeg ( mjpa_compress_engine * engine )

Definition at line 662 of file jpeg_old.c.

References mjpa_compress_engine::done, mjpa_compress_engine::input_lock, mjpa_compress_engine::output_lock, quicktime_compress_jpeg(), mjpa_compress_engine::row_pointers, and mjpa_compress_engine::write_next_offset.

Referenced by quicktime_startcompressor_jpeg().

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void quicktime_compresswait_jpeg ( mjpa_compress_engine * engine )

Definition at line 704 of file jpeg_old.c.

References mjpa_compress_engine::output_lock.

Referenced by quicktime_encode_jpeg().

void quicktime_create_mjpa_objects ( mjpa_decompress_engine * engine )

Definition at line 355 of file jpeg_old.c.

References mjpa_decompress_engine::jpeg_decompress, mjpa_decompress_engine::jpeg_error, my_error_exit(), and my_error_mgr::pub.

Referenced by quicktime_decode_jpeg(), and quicktime_decompressor_jpeg().

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static int quicktime_decode_jpeg	(	quicktime_t *	file,
		unsigned char **	row_pointers,
		int	track
	)			`[static]`

Definition at line 493 of file jpeg_old.c.

References quicktime_jpeg_codec_t::buffer_size, bytes, mjpa_decompress_engine::codec, quicktime_video_map_t::codec, quicktime_t::cpus, quicktime_video_map_t::current_position, quicktime_jpeg_codec_t::decompressors, mjpa_decompress_engine::done, quicktime_stsd_table_t::field_dominance, mjpa_decompress_engine::field_offset, mjpa_decompress_engine::height, height, quicktime_jpeg_codec_t::input_buffer, mjpa_decompress_engine::interlaced, mjpa_decompress_engine::is_mjpa, quicktime_jpeg_codec_t::jpeg_type, quicktime_trak_t::mdia, quicktime_mdia_t::minf, mjpa_decompress_engine::mjpeg_hdr, quicktime_mjpeg_hdr::mjpg_kludge, quicktime_create_mjpa_objects(), quicktime_decompressfield_jpeg(), quicktime_decompresswait_jpeg(), quicktime_frame_size(), quicktime_read_data(), quicktime_set_video_position(), quicktime_startdecompressor_jpeg(), quicktime_minf_t::stbl, quicktime_stbl_t::stsd, quicktime_stsd_t::table, quicktime_trak_t::tkhd, quicktime_jpeg_codec_t::total_decompressors, TOTAL_MJPA_COMPRESSORS, quicktime_video_map_t::track, quicktime_tkhd_t::track_height, quicktime_tkhd_t::track_width, quicktime_t::vtracks, mjpa_decompress_engine::width, and width.

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int quicktime_decompressfield_jpeg	(	mjpa_decompress_engine *	engine,
		char *	input_ptr,
		long	input_size,
		unsigned char **	row_pointers,
		int	markers_only,
		int	resume
	)

Definition at line 471 of file jpeg_old.c.

References mjpa_decompress_engine::input_lock, mjpa_decompress_engine::input_ptr, mjpa_decompress_engine::input_size, mjpa_decompress_engine::markers_only, and mjpa_decompress_engine::row_pointers.

Referenced by quicktime_decode_jpeg().

void quicktime_decompressor_jpeg ( mjpa_decompress_engine * engine )

Definition at line 369 of file jpeg_old.c.

Referenced by quicktime_startdecompressor_jpeg().

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int quicktime_decompresswait_jpeg ( mjpa_decompress_engine * engine )

Definition at line 486 of file jpeg_old.c.

References mjpa_decompress_engine::output_lock.

Referenced by quicktime_decode_jpeg().

static int quicktime_delete_codec_jpeg ( quicktime_video_map_t * vtrack ) [static]

Definition at line 94 of file jpeg_old.c.

References quicktime_video_map_t::codec, quicktime_jpeg_codec_t::compressors, quicktime_jpeg_codec_t::decompressors, quicktime_jpeg_codec_t::input_buffer, mjpa_decompress_engine::jpeg_decompress, quicktime_endcompressor_jpeg(), quicktime_enddecompressor_jpeg(), quicktime_jpeg_delete_compress_engine(), and quicktime_jpeg_codec_t::total_compressors.

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void quicktime_delete_mjpa_objects ( mjpa_decompress_engine * engine )

Definition at line 363 of file jpeg_old.c.

References mjpa_decompress_engine::jpeg_decompress.

Referenced by quicktime_decompressor_jpeg().

static int quicktime_encode_jpeg	(	quicktime_t *	file,
		unsigned char **	row_pointers,
		int	track
	)			`[static]`

Definition at line 766 of file jpeg_old.c.

References bytes, quicktime_video_map_t::codec, quicktime_jpeg_codec_t::compressors, quicktime_t::cpus, quicktime_video_map_t::current_chunk, quicktime_video_map_t::current_position, height, quicktime_jpeg_codec_t::jpeg_type, offset, mjpa_compress_engine::output_buffer, mjpa_compress_engine::output_size, quicktime_jpeg_codec_t::quality, quicktime_compressfield_jpeg(), quicktime_compresswait_jpeg(), quicktime_jpeg_new_compress_engine(), quicktime_position(), quicktime_startcompressor_jpeg(), quicktime_write_data(), quicktime_trak_t::tkhd, quicktime_jpeg_codec_t::total_compressors, TOTAL_MJPA_COMPRESSORS, quicktime_video_map_t::track, quicktime_tkhd_t::track_height, quicktime_tkhd_t::track_width, quicktime_jpeg_codec_t::use_float, quicktime_t::vtracks, and width.

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void quicktime_endcompressor_jpeg ( mjpa_compress_engine * engine )

Definition at line 85 of file jpeg_old.c.

References mjpa_compress_engine::done, mjpa_compress_engine::input_lock, mjpa_compress_engine::output_lock, and mjpa_compress_engine::tid.

Referenced by quicktime_delete_codec_jpeg().

int quicktime_enddecompressor_jpeg ( mjpa_decompress_engine * engine )

Definition at line 461 of file jpeg_old.c.

References mjpa_decompress_engine::done, mjpa_decompress_engine::input_lock, mjpa_decompress_engine::output_lock, and mjpa_decompress_engine::tid.

Referenced by quicktime_delete_codec_jpeg().

int quicktime_fixmarker_jpeg	(	quicktime_mjpeg_hdr *	mjpeg_hdr,
		char *	buffer,
		long	output_size,
		int	write_next_offset
	)

Definition at line 255 of file jpeg_old.c.

Referenced by quicktime_compress_jpeg().

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int quicktime_getmarker_jpeg	(	char **	buffer_ptr,
		int *	buffer_size,
		int *	len
	)

Definition at line 223 of file jpeg_old.c.

References c, and quicktime_readbyte_jpeg().

Referenced by quicktime_fixmarker_jpeg().

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void quicktime_jpeg_delete_compress_engine ( mjpa_compress_engine * compressor )

Definition at line 76 of file jpeg_old.c.

References mjpa_compress_engine::jpeg_compress, and mjpa_compress_engine::output_buffer.

Referenced by quicktime_delete_codec_jpeg().

mjpa_compress_engine* quicktime_jpeg_new_compress_engine	(	int	width,
		int	height,
		int	quality,
		int	use_float,
		int	interlaced,
		int	is_mjpa,
		int	field_number
	)

Definition at line 709 of file jpeg_old.c.

References mjpa_compress_engine::done, mjpa_compress_engine::height, mjpa_compress_engine::interlaced, mjpa_compress_engine::is_mjpa, mjpa_compress_engine::jpeg_compress, mjpa_compress_engine::jpeg_error, mjpa_compress_engine::mjpeg_hdr, quicktime_mjpeg_hdr::mjpg_kludge, mjpa_compress_engine::output_allocated, mjpa_compress_engine::output_buffer, mjpa_compress_engine::output_size, mjpa_compress_engine::row_pointers, mjpa_compress_engine::width, and mjpa_compress_engine::write_next_offset.

Referenced by quicktime_encode_jpeg().

static int quicktime_read_int16_jpeg	(	char **	data,
		int *	length
	)			`[inline, static]`

Definition at line 146 of file jpeg_old.c.

Referenced by quicktime_fixmarker_jpeg().

static int quicktime_read_int32_jpeg	(	char **	data,
		int *	length
	)			`[inline, static]`

Definition at line 123 of file jpeg_old.c.

Referenced by quicktime_read_markers_jpeg().

int quicktime_read_markers_jpeg	(	quicktime_mjpeg_hdr *	mjpeg_hdr,
		struct jpeg_decompress_struct *	jpeg_decompress
	)

Definition at line 163 of file jpeg_old.c.

References quicktime_mjpeg_hdr::data_offset, quicktime_mjpeg_hdr::field_size, quicktime_mjpeg_hdr::huffman_offset, quicktime_mjpeg_hdr::image_offset, quicktime_mjpeg_hdr::mjpeg_marker, quicktime_mjpeg_hdr::next_offset, quicktime_mjpeg_hdr::padded_field_size, quicktime_mjpeg_hdr::quant_offset, QUICKTIME_JPEG_MARKSIZE, quicktime_read_int32_jpeg(), and quicktime_mjpeg_hdr::scan_offset.

Referenced by quicktime_decompressor_jpeg().

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static int quicktime_readbyte_jpeg	(	char **	data,
		int *	length
	)			`[inline, static]`

Definition at line 155 of file jpeg_old.c.

Referenced by quicktime_getmarker_jpeg().

static void quicktime_skipmarker_jpeg	(	char **	buffer_ptr,
		int *	buffer_size,
		int *	len
	)			`[inline, static]`

Definition at line 213 of file jpeg_old.c.

Referenced by quicktime_fixmarker_jpeg().

void quicktime_startcompressor_jpeg ( mjpa_compress_engine * engine )

Definition at line 680 of file jpeg_old.c.

References mjpa_compress_engine::input_lock, mjpa_compress_engine::output_lock, quicktime_compressor_jpeg(), and mjpa_compress_engine::tid.

Referenced by quicktime_encode_jpeg().

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int quicktime_startdecompressor_jpeg ( mjpa_decompress_engine * engine )

Definition at line 444 of file jpeg_old.c.

References mjpa_decompress_engine::input_lock, mjpa_decompress_engine::output_lock, quicktime_decompressor_jpeg(), and mjpa_decompress_engine::tid.

Referenced by quicktime_decode_jpeg().

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static int quicktime_write_int32_jpeg	(	char **	data,
		int *	length,
		int	value
	)			`[inline, static]`

Definition at line 134 of file jpeg_old.c.

Referenced by quicktime_fixmarker_jpeg().


Defines
#define	M_SOF0 0xc0
#define	M_SOF1 0xc1
#define	M_SOF2 0xc2
#define	M_SOF3 0xc3
#define	M_SOF5 0xc5
#define	M_SOF6 0xc6
#define	M_SOF7 0xc7
#define	M_JPG 0xc8
#define	M_SOF9 0xc9
#define	M_SOF10 0xca
#define	M_SOF11 0xcb
#define	M_SOF13 0xcd
#define	M_SOF14 0xce
#define	M_SOF15 0xcf
#define	M_DHT 0xc4
#define	M_DAC 0xcc
#define	M_RST0 0xd0
#define	M_RST1 0xd1
#define	M_RST2 0xd2
#define	M_RST3 0xd3
#define	M_RST4 0xd4
#define	M_RST5 0xd5
#define	M_RST6 0xd6
#define	M_RST7 0xd7
#define	M_SOI 0xd8
#define	M_EOI 0xd9
#define	M_SOS 0xda
#define	M_DQT 0xdb
#define	M_DNL 0xdc
#define	M_DRI 0xdd
#define	M_DHP 0xde
#define	M_EXP 0xdf
#define	M_APP0 0xe0
#define	M_APP1 0xe1
#define	M_APP2 0xe2
#define	M_APP3 0xe3
#define	M_APP4 0xe4
#define	M_APP5 0xe5
#define	M_APP6 0xe6
#define	M_APP7 0xe7
#define	M_APP8 0xe8
#define	M_APP9 0xe9
#define	M_APP10 0xea
#define	M_APP11 0xeb
#define	M_APP12 0xec
#define	M_APP13 0xed
#define	M_APP14 0xee
#define	M_APP15 0xef
#define	M_JPG0 0xf0
#define	M_JPG13 0xfd
#define	M_COM 0xfe
#define	M_TEM 0x01
#define	M_ERROR 0x100
Functions
	my_error_exit (j_common_ptr cinfo)
void	quicktime_jpeg_delete_compress_engine (mjpa_compress_engine *compressor)
void	quicktime_endcompressor_jpeg (mjpa_compress_engine *engine)
static int	quicktime_delete_codec_jpeg (quicktime_video_map_t *vtrack)
static int	quicktime_read_int32_jpeg (char *data, int length)
static int	quicktime_write_int32_jpeg (char *data, int length, int value)
static int	quicktime_read_int16_jpeg (char *data, int length)
static int	quicktime_readbyte_jpeg (char *data, int length)
int	quicktime_read_markers_jpeg (quicktime_mjpeg_hdr mjpeg_hdr, struct jpeg_decompress_struct jpeg_decompress)
static void	quicktime_skipmarker_jpeg (char *buffer_ptr, int buffer_size, int *len)
int	quicktime_getmarker_jpeg (char *buffer_ptr, int buffer_size, int *len)
int	quicktime_fixmarker_jpeg (quicktime_mjpeg_hdr mjpeg_hdr, char buffer, long output_size, int write_next_offset)
void	quicktime_create_mjpa_objects (mjpa_decompress_engine *engine)
void	quicktime_delete_mjpa_objects (mjpa_decompress_engine *engine)
void	quicktime_decompressor_jpeg (mjpa_decompress_engine *engine)
int	quicktime_startdecompressor_jpeg (mjpa_decompress_engine *engine)
int	quicktime_enddecompressor_jpeg (mjpa_decompress_engine *engine)
int	quicktime_decompressfield_jpeg (mjpa_decompress_engine engine, char input_ptr, long input_size, unsigned char **row_pointers, int markers_only, int resume)
int	quicktime_decompresswait_jpeg (mjpa_decompress_engine *engine)
static int	quicktime_decode_jpeg (quicktime_t file, unsigned char *row_pointers, int track)
unsigned char *	quicktime_compress_jpeg (mjpa_compress_engine engine, unsigned char row_pointers, long image_size, int write_next_offset)
void	quicktime_compressor_jpeg (mjpa_compress_engine *engine)
void	quicktime_startcompressor_jpeg (mjpa_compress_engine *engine)
void	quicktime_compressfield_jpeg (mjpa_compress_engine engine, unsigned char *row_pointers, int write_next_offset)
void	quicktime_compresswait_jpeg (mjpa_compress_engine *engine)
mjpa_compress_engine *	quicktime_jpeg_new_compress_engine (int width, int height, int quality, int use_float, int interlaced, int is_mjpa, int field_number)
static int	quicktime_encode_jpeg (quicktime_t file, unsigned char *row_pointers, int track)