我正在尝试在 ubuntu 上通过 gcc 的视频支持从源代码构建 pjsip。在我成功完全运行 ./configure 和 make dep 后，我运行 make 并且出现以下错误：
../src/pjmedia/ffmpeg_util.c:46:18: error: field ‘codec_id’ has incomplete type
../src/pjmedia/ffmpeg_util.c:148:13: error: conflicting types for ‘pjmedia_format_id_to_CodecID’
../src/pjmedia/ffmpeg_util.h:23:13: note: previous declaration of ‘pjmedia_format_id_to_CodecID’ was here
../src/pjmedia/ffmpeg_util.c: In function ‘pjmedia_format_id_to_CodecID’:
../src/pjmedia/ffmpeg_util.c:154:35: warning: comparison between pointer and integer [enabled by default]
../src/pjmedia/ffmpeg_util.c:155:6: error: dereferencing pointer to incomplete type
../src/pjmedia/ffmpeg_util.c:155:6: warning: statement with no effect [-Wunused-value]
../src/pjmedia/ffmpeg_util.c:160:5: error: dereferencing pointer to incomplete type
../src/pjmedia/ffmpeg_util.c:160:5: warning: statement with no effect [-Wunused-value]
../src/pjmedia/ffmpeg_util.c: At top level:
../src/pjmedia/ffmpeg_util.c:164:55: error: parameter 1 (‘codec_id’) has incomplete type
这是 ffmpeg_util.h 和 ffmpeg_util.c 中的代码
ffmpeg_util.h
#ifndef __PJMEDIA_FFMPEG_UTIL_H__
#define __PJMEDIA_FFMPEG_UTIL_H__
#include <pjmedia/format.h>
#ifdef _MSC_VER
# ifndef __cplusplus
# define inline _inline
# endif
# pragma warning(disable:4244) /* possible loss of data */
#endif
#include <libavutil/avutil.h>
#include <libavcodec/avcodec.h>
void pjmedia_ffmpeg_add_ref();
void pjmedia_ffmpeg_dec_ref();
pj_status_t pjmedia_format_id_to_PixelFormat(pjmedia_format_id fmt_id,
enum PixelFormat *pixel_format);
pj_status_t PixelFormat_to_pjmedia_format_id(enum PixelFormat pf,
pjmedia_format_id *fmt_id);
pj_status_t pjmedia_format_id_to_CodecID(pjmedia_format_id fmt_id,
enum CodecID *codec_id);
pj_status_t CodecID_to_pjmedia_format_id(enum CodecID codec_id,
pjmedia_format_id *fmt_id);
#endif /* __PJMEDIA_FFMPEG_UTIL_H__ */
ffmpeg_util.c
#include <pjmedia/types.h>
#include <pj/errno.h>
#include <pj/log.h>
#include <pj/string.h>
#if PJMEDIA_HAS_LIBAVFORMAT && PJMEDIA_HAS_LIBAVUTIL
#include "ffmpeg_util.h"
#include <libavformat/avformat.h>
#define MAKE_VER(mj,mn,mi) ((mj << 16) | (mn << 8) | (mi << 0))
#define VER_AT_LEAST(mj,mn,mi) (MAKE_VER(LIBAVUTIL_VERSION_MAJOR, \
LIBAVUTIL_VERSION_MINOR, \
LIBAVUTIL_VERSION_MICRO) >= \
MAKE_VER(mj,mn,mi))
/* Conversion table between pjmedia_format_id and PixelFormat */
static const struct ffmpeg_fmt_table_t
{
pjmedia_format_id id;
enum PixelFormat pf;
} ffmpeg_fmt_table[] =
{
{ PJMEDIA_FORMAT_RGBA, PIX_FMT_RGBA},
{ PJMEDIA_FORMAT_RGB24,PIX_FMT_BGR24},
{ PJMEDIA_FORMAT_BGRA, PIX_FMT_BGRA},
#if VER_AT_LEAST(51,20,1)
{ PJMEDIA_FORMAT_GBRP, PIX_FMT_GBR24P},
#endif
{ PJMEDIA_FORMAT_AYUV, PIX_FMT_NONE},
{ PJMEDIA_FORMAT_YUY2, PIX_FMT_YUYV422},
{ PJMEDIA_FORMAT_UYVY, PIX_FMT_UYVY422},
{ PJMEDIA_FORMAT_I420, PIX_FMT_YUV420P},
//{ PJMEDIA_FORMAT_YV12, PIX_FMT_YUV420P},
{ PJMEDIA_FORMAT_I422, PIX_FMT_YUV422P},
{ PJMEDIA_FORMAT_I420JPEG, PIX_FMT_YUVJ420P},
{ PJMEDIA_FORMAT_I422JPEG, PIX_FMT_YUVJ422P},
};
/* Conversion table between pjmedia_format_id and CodecID */
static const struct ffmpeg_codec_table_t
{
pjmedia_format_id id;
enum CodecID codec_id;
} ffmpeg_codec_table[] =
{
{PJMEDIA_FORMAT_H261, CODEC_ID_H261},
{PJMEDIA_FORMAT_H263, CODEC_ID_H263},
{PJMEDIA_FORMAT_H263P, CODEC_ID_H263P},
{PJMEDIA_FORMAT_H264, CODEC_ID_H264},
{PJMEDIA_FORMAT_MPEG1VIDEO, CODEC_ID_MPEG1VIDEO},
{PJMEDIA_FORMAT_MPEG2VIDEO, CODEC_ID_MPEG2VIDEO},
{PJMEDIA_FORMAT_MPEG4, CODEC_ID_MPEG4},
{PJMEDIA_FORMAT_MJPEG, CODEC_ID_MJPEG}
};
static int pjmedia_ffmpeg_ref_cnt;
static void ffmpeg_log_cb(void* ptr, int level, const char* fmt, va_list vl);
void pjmedia_ffmpeg_add_ref()
{
if (pjmedia_ffmpeg_ref_cnt++ == 0) {
av_log_set_level(AV_LOG_ERROR);
av_log_set_callback(&ffmpeg_log_cb);
av_register_all();
}
}
void pjmedia_ffmpeg_dec_ref()
{
if (pjmedia_ffmpeg_ref_cnt-- == 1) {
/* How to shutdown ffmpeg? */
}
if (pjmedia_ffmpeg_ref_cnt < 0) pjmedia_ffmpeg_ref_cnt = 0;
}
static void ffmpeg_log_cb(void* ptr, int level, const char* fmt, va_list vl)
{
const char *LOG_SENDER = "ffmpeg";
enum { LOG_LEVEL = 5 };
char buf[100];
int bufsize = sizeof(buf), len;
pj_str_t fmt_st;
/* Custom callback needs to filter log level by itself */
if (level > av_log_get_level())
return;
/* Add original ffmpeg sender to log format */
if (ptr) {
AVClass* avc = *(AVClass**)ptr;
len = pj_ansi_snprintf(buf, bufsize, "%s: ", avc->item_name(ptr));
bufsize -= len;
}
/* Copy original log format */
len = pj_ansi_strlen(fmt);
if (len > bufsize-1)
len = bufsize-1;
pj_memcpy(buf+sizeof(buf)-bufsize, fmt, len);
bufsize -= len;
/* Trim log format */
pj_strset(&fmt_st, buf, sizeof(buf)-bufsize);
pj_strrtrim(&fmt_st);
buf[fmt_st.slen] = '\0';
pj_log(LOG_SENDER, LOG_LEVEL, buf, vl);
}
pj_status_t pjmedia_format_id_to_PixelFormat(pjmedia_format_id fmt_id,
enum PixelFormat *pixel_format)
{
unsigned i;
for (i=0; i<PJ_ARRAY_SIZE(ffmpeg_fmt_table); ++i) {
const struct ffmpeg_fmt_table_t *t = &ffmpeg_fmt_table[i];
if (t->id==fmt_id && t->pf != PIX_FMT_NONE) {
*pixel_format = t->pf;
return PJ_SUCCESS;
}
}
*pixel_format = PIX_FMT_NONE;
return PJ_ENOTFOUND;
}
pj_status_t PixelFormat_to_pjmedia_format_id(enum PixelFormat pf,
pjmedia_format_id *fmt_id)
{
unsigned i;
for (i=0; i<PJ_ARRAY_SIZE(ffmpeg_fmt_table); ++i) {
const struct ffmpeg_fmt_table_t *t = &ffmpeg_fmt_table[i];
if (t->pf == pf) {
if (fmt_id) *fmt_id = t->id;
return PJ_SUCCESS;
}
}
return PJ_ENOTFOUND;
}
pj_status_t pjmedia_format_id_to_CodecID(pjmedia_format_id fmt_id,
enum CodecID *codec_id)
{
unsigned i;
for (i=0; i<PJ_ARRAY_SIZE(ffmpeg_codec_table); ++i) {
const struct ffmpeg_codec_table_t *t = &ffmpeg_codec_table[i];
if (t->id==fmt_id && t->codec_id != PIX_FMT_NONE) {
*codec_id = t->codec_id;
return PJ_SUCCESS;
}
}
*codec_id = PIX_FMT_NONE;
return PJ_ENOTFOUND;
}
pj_status_t CodecID_to_pjmedia_format_id(enum CodecID codec_id,
pjmedia_format_id *fmt_id)
{
unsigned i;
for (i=0; i<PJ_ARRAY_SIZE(ffmpeg_codec_table); ++i) {
const struct ffmpeg_codec_table_t *t = &ffmpeg_codec_table[i];
if (t->codec_id == codec_id) {
if (fmt_id) *fmt_id = t->id;
return PJ_SUCCESS;
}
}
return PJ_ENOTFOUND;
}
#ifdef _MSC_VER
# pragma comment( lib, "avformat.lib")
# pragma comment( lib, "avutil.lib")
#endif
#endif /* #if PJMEDIA_HAS_LIBAVFORMAT && PJMEDIA_HAS_LIBAVUTIL */
帮我解决这个错误！