static bool ffmpeg_find_h264_size (ffmpeg_codec_t *ffmpeg,
const uint8_t *ud,
uint32_t ud_size)
{
uint32_t offset = 0;
do {
if (h264_is_start_code(ud + offset)) {
if (h264_nal_unit_type(ud + offset) == H264_NAL_TYPE_SEQ_PARAM) {
h264_decode_t dec;
memset(&dec, 0, sizeof(dec));
if (h264_read_seq_info(ud + offset, ud_size - offset, &dec) == 0) {
ffmpeg->m_c->width = dec.pic_width;
ffmpeg->m_c->height = dec.pic_height;
return true;
}
}
}
offset += h264_find_next_start_code(ud + offset, ud_size - offset);
} while (offset < ud_size);
return false;
}
bool CX264VideoEncoder::GetEsConfig (uint8_t **ppEsConfig,
uint32_t *pEsConfigLen)
{
#ifdef DEBUG_H264
debug_message("Getting es config for x264");
#endif
CHECK_AND_FREE(Profile()->m_videoMpeg4Config);
Profile()->m_videoMpeg4ConfigLength = 0;
x264_nal_t *nal;
int nal_num;
if (x264_encoder_headers(m_h, &nal, &nal_num) != 0) {
error_message("x264 - can't create headers");
StopEncoder();
return false;
}
uint8_t *seqptr = m_vopBuffer;
uint8_t *picptr = m_vopBuffer;
uint32_t seqlen = 0, piclen = 0;
bool found_seq = false, found_pic = false;
if (m_vopBuffer == NULL) {
m_vopBuffer = (u_int8_t*)malloc(Profile()->m_videoMaxVopSize);
}
uint8_t *vopBuffer = m_vopBuffer;
int vopBufferLen = Profile()->m_videoMaxVopSize;
for (int ix = 0; ix < nal_num; ix++) {
int i_size;
i_size = x264_nal_encode(vopBuffer, &vopBufferLen, 1, &nal[ix]);
if (i_size > 0) {
bool useit = false;
uint header_size = 0;
if (h264_is_start_code(vopBuffer)) {
header_size = vopBuffer[2] == 1 ? 3 : 4;
}
if (nal[ix].i_type == H264_NAL_TYPE_SEQ_PARAM) {
found_seq = true;
seqlen = i_size - header_size;
seqptr = vopBuffer + header_size;
useit = true;
} else if (nal[ix].i_type == H264_NAL_TYPE_PIC_PARAM) {
found_pic = true;
piclen = i_size - header_size;
picptr = vopBuffer + header_size;
useit = true;
}
if (useit) {
vopBuffer += i_size;
vopBufferLen -= i_size;
}
}
}
if (found_seq == false) {
error_message("Can't find seq pointer in x264 header");
StopEncoder();
return false;
}
if (found_pic == false) {
error_message("Can't find pic pointer in x264 header");
StopEncoder();
return false;
}
uint8_t *p = seqptr;
if (*p == 0 && p[1] == 0 &&
(p[2] == 1 || (p[2] == 0 && p[3] == 1))) {
if (p[2] == 0) p += 4;
else p += 3;
}
Profile()->m_videoMpeg4ProfileId = p[1] << 16 |
p[2] << 8 |
p[3];
debug_message("profile id %x", Profile()->m_videoMpeg4ProfileId);
char *sprop = NULL;
char *base64;
base64 = MP4BinaryToBase64(seqptr, seqlen);
sprop = strdup(base64);
free(base64);
base64 = MP4BinaryToBase64(picptr, piclen);
sprop = (char *)realloc(sprop, strlen(sprop) + strlen(base64) + 1 + 1);
strcat(sprop, ",");
strcat(sprop, base64);
free(base64);
debug_message("sprop %s", sprop);
Profile()->m_videoMpeg4Config = (uint8_t *)sprop;
Profile()->m_videoMpeg4ConfigLength = strlen(sprop) + 1;
StopEncoder();
return true;
}
bool CX264VideoEncoder::EncodeImage(
const u_int8_t* pY,
const u_int8_t* pU,
const u_int8_t* pV,
u_int32_t yStride, u_int32_t uvStride,
bool wantKeyFrame,
Duration elapsedDuration,
Timestamp srcFrameTimestamp)
{
//debug_message("encoding at "U64, srcFrameTimestamp);
m_push->Push(srcFrameTimestamp);
if (m_vopBuffer == NULL) {
m_vopBuffer = (u_int8_t*)malloc(Profile()->m_videoMaxVopSize);
if (m_vopBuffer == NULL) {
error_message("Cannot malloc vop size");
return false;
}
}
m_count++;
if (m_count >= m_key_frame_count) {
wantKeyFrame = true;
m_count = 0;
}
#ifdef USE_OUR_YUV
m_pic_input.img.plane[0] = (uint8_t *)pY;
m_pic_input.img.i_stride[0] = yStride;
m_pic_input.img.plane[1] = (uint8_t *)pU;
m_pic_input.img.i_stride[1] = uvStride;
m_pic_input.img.plane[2] = (uint8_t *)pV;
m_pic_input.img.i_stride[2] = uvStride;
#else
CopyYuv(pY, pU, pV, yStride, uvStride, uvStride,
m_pic_input.img.plane[0],m_pic_input.img.plane[1],m_pic_input.img.plane[2],
m_pic_input.img.i_stride[0],m_pic_input.img.i_stride[1],m_pic_input.img.i_stride[2],
Profile()->m_videoWidth, Profile()->m_videoHeight);
#endif
m_pic_input.i_type = wantKeyFrame ? X264_TYPE_IDR : X264_TYPE_AUTO;
m_pic_input.i_pts = srcFrameTimestamp;
x264_nal_t *nal;
int i_nal;
if (x264_encoder_encode(m_h, &nal, &i_nal, &m_pic_input, &m_pic_output) < 0) {
error_message("x264_encoder_encode failed");
return false;
}
CHECK_AND_FREE(m_nal_info);
m_nal_info = (h264_nal_buf_t *)malloc(i_nal * sizeof(h264_nal_buf_t));
uint8_t *vopBuffer = m_vopBuffer;
int vopBufferLen = m_vopBufferLength;
uint32_t loaded = 0;
uint32_t nal_on = 0;
// read the nals out of the encoder. Nice...
for (int ix = 0; ix < i_nal; ix++) {
int i_size;
bool skip = false;
i_size = x264_nal_encode(vopBuffer, &vopBufferLen, 1, &nal[ix]);
if (i_size > 0) {
m_nal_info[nal_on].nal_length = i_size;
m_nal_info[nal_on].nal_offset = loaded;
m_nal_info[nal_on].nal_type = nal[ix].i_type;
m_nal_info[nal_on].unique = false;
uint32_t header = 0;
if (h264_is_start_code(vopBuffer)) {
header = vopBuffer[2] == 1 ? 3 : 4;
}
m_nal_info[nal_on].nal_length -= header;
m_nal_info[nal_on].nal_offset += header;
// we will send picture or sequence header through - let the
// sinks decide to send or not
if (skip == false) {
#ifdef DEBUG_H264
uint8_t nal_type = nal[ix].i_type;
if (h264_nal_unit_type_is_slice(nal_type)) {
uint8_t stype;
h264_find_slice_type(vopBuffer, i_size, &stype, true);
debug_message("nal %d - type %u slice type %u %d",
ix, nal_type, stype, i_size);
} else {
debug_message("nal %d - type %u %d", ix, nal_type, i_size);
}
#endif
nal_on++;
loaded += i_size;
vopBufferLen -= i_size;
vopBuffer += i_size;
} else {
#ifdef DEBUG_H264
debug_message("skipped nal %u", nal[ix].i_type);
#endif
}
} else {
error_message("Need to increase vop buffer size by %d",
-i_size);
}
}
m_nal_num = nal_on;
m_vopBufferLength = loaded;
#ifdef DEBUG_H264
debug_message("x264 loaded %d nals, %u len",
i_nal, loaded);
#endif
#ifdef OUTPUT_RAW
if (m_vopBufferLength) {
fwrite(m_vopBuffer, m_vopBufferLength, 1, m_outfile);
}
#endif
return true;
}
/*
* avi2raw
* required arg1 should be the input AVI file
* required arg2 should be the output RAW file
*/
int main(int argc, char** argv)
{
/* configurable variables from command line */
bool extractVideo = TRUE; /* FALSE implies extract audio */
u_int32_t start = 0; /* secs, start offset */
u_int32_t duration = 0; /* secs, 0 implies entire file */
bool quiet = FALSE;
/* internal variables */
char* aviFileName = NULL;
char* rawFileName = NULL;
avi_t* aviFile = NULL;
FILE* rawFile = NULL;
int verbose = FALSE;
u_int32_t numBytes, totBytes = 0;
bool eliminate_short_frames = FALSE;
uint32_t short_frames_len;
/* begin process command line */
progName = argv[0];
while (1) {
int c = -1;
int option_index = 0;
static struct option long_options[] = {
{ "audio", 0, 0, 'a' },
{ "eliminate-short-frames", optional_argument, 0, 'e'},
{ "length", 1, 0, 'l' },
{ "quiet", 0, 0, 'q' },
{ "start", 1, 0, 's' },
{ "video", 0, 0, 'v' },
{ "version", 0, 0, 'V'},
{ "verbose", 0, 0, 'R'},
{ "help", 0, 0, 'h'},
{ NULL, 0, 0, 0 }
};
c = getopt_long_only(argc, argv, "ael:qs:vVh",
long_options, &option_index);
if (c == -1)
break;
switch (c) {
case 'h':
fprintf(stderr, "%s - %s version %s\n", progName,
MPEG4IP_PACKAGE, MPEG4IP_VERSION);
fprintf(stderr, "options:\n");
fprintf(stderr, " --audio - extract audio track\n");
fprintf(stderr, " --length <length> - extract <length> secs\n");
fprintf(stderr, " --quiet - quiet mode\n");
fprintf(stderr, " --start <time> - extract from <start> time\n");
fprintf(stderr, " --video - extract video track\n");
fprintf(stderr, " --eliminate-short-frames <bytes> - eliminate short frames of bytes or less - default 4\n");
return 0;
case 'a': {
extractVideo = FALSE;
break;
}
case 'e':
eliminate_short_frames = TRUE;
if (optarg) {
if (optarg[0] == '=') optarg[0] = ' ';
if (sscanf(optarg, "%u", &short_frames_len) != 1) {
fprintf(stderr, "%s:bad eliminate length %s\n",
progName, optarg);
}
} else {
short_frames_len = 4;
}
break;
case 'l': {
/* --length=<secs> */
u_int i;
if (sscanf(optarg, "%u", &i) < 1) {
fprintf(stderr,
"%s: bad length specified: %s\n",
progName, optarg);
} else {
duration = i;
}
break;
}
case 'q': {
quiet = TRUE;
break;
}
case 's': {
/* --start=<secs> */
u_int i;
if (sscanf(optarg, "%u", &i) < 1) {
fprintf(stderr,
"%s: bad start specified: %s\n",
progName, optarg);
} else {
start = i;
}
break;
}
case 'v': {
extractVideo = TRUE;
break;
}
case '?':
break;
case 'R':
verbose = TRUE; quiet = FALSE;
break;
case 'V':
fprintf(stderr, "%s - %s version %s\n", progName,
MPEG4IP_PACKAGE, MPEG4IP_VERSION);
return(0);
default:
fprintf(stderr, "%s: unknown option specified, ignoring: %c\n",
progName, c);
}
}
/* check that we have at least two non-option arguments */
if ((argc - optind) < 2) {
fprintf(stderr,
"usage: %s <avi-file> <raw-file>\n",
progName);
exit(1);
}
/* point to the specified file names */
aviFileName = argv[optind++];
rawFileName = argv[optind++];
/* warn about extraneous non-option arguments */
if (optind < argc) {
fprintf(stderr, "%s: unknown options specified, ignoring: ", progName);
while (optind < argc) {
fprintf(stderr, "%s ", argv[optind++]);
}
fprintf(stderr, "\n");
}
/* end processing of command line */
/* open the AVI file */
aviFile = AVI_open_input_file(aviFileName, TRUE);
if (aviFile == NULL) {
fprintf(stderr,
"%s: error %s: %s\n",
progName, aviFileName, AVI_strerror());
exit(4);
}
if (!quiet) {
fprintf(stderr, "%s - %s version %s\n",
progName, MPEG4IP_PACKAGE, MPEG4IP_VERSION);
}
/* open the RAW file */
rawFile = fopen(rawFileName, "wb");
if (rawFile == NULL) {
fprintf(stderr,
"%s: error opening %s: %s\n",
progName, rawFileName, strerror(errno));
exit(5);
}
if (extractVideo) {
double videoFrameRate = AVI_video_frame_rate(aviFile);
u_int32_t numVideoFrames = AVI_video_frames(aviFile);
u_int32_t fileDuration = ceil(numVideoFrames / videoFrameRate);
u_int32_t numDesiredVideoFrames;
u_int32_t videoFramesRead = 0;
u_int32_t emptyFramesRead = 0;
/* get a buffer large enough to handle a frame of raw SDTV */
u_char* buf = (u_char*)malloc(768 * 576 * 4);
if (duration) {
numDesiredVideoFrames = duration * videoFrameRate;
} else {
numDesiredVideoFrames = numVideoFrames;
}
if (buf == NULL) {
fprintf(stderr,
"%s: error allocating memory: %s\n",
progName, strerror(errno));
exit(6);
}
/* check that start offset is valid */
if (start > fileDuration) {
fprintf(stderr,
"%s: specified start is past the end of the file\n",
progName);
exit(7);
}
if (AVI_seek_start(aviFile)) {
fprintf(stderr,
"%s: bad seek: %s\n",
progName, AVI_strerror());
exit(8);
}
if (AVI_set_video_position(aviFile, (long) ROUND(start * videoFrameRate), NULL)) {
fprintf(stderr,
"%s: bad seek: %s\n",
progName, AVI_strerror());
exit(9);
}
#ifdef DEBUG_H264
h264_decode_t dec;
#endif
while (TRUE) {
numBytes = AVI_read_frame(aviFile, (char *)buf);
/* read error */
if (numBytes < 0) {
break;
}
totBytes += numBytes;
videoFramesRead++;
if (verbose) {
printf("frame %d - len %u total %u\n",
videoFramesRead, numBytes, totBytes);
}
/*
* note some capture programs
* insert a zero length frame occasionally
* hence numBytes == 0, but we're not a EOF
*/
if ((eliminate_short_frames && numBytes > short_frames_len) ||
(eliminate_short_frames == FALSE && numBytes)) {
// test
#ifdef DEBUG_H264
uint32_t offset = 0, read;
do {
if (h264_is_start_code(buf + offset)) {
int ret =
h264_detect_boundary(buf + offset,
numBytes - offset,
&dec);
printf(" frame offset %d nal type %d slice %d %d\n",
offset,
dec.nal_unit_type,
dec.slice_type,
ret);
}
read = h264_find_next_start_code(buf + offset,
numBytes - offset);
offset += read;
} while (read != 0 && offset < numBytes);
#endif
if (fwrite(buf, 1, numBytes, rawFile) != numBytes) {
fprintf(stderr,
"%s: error writing %s: %s\n",
progName, rawFileName, strerror(errno));
break;
}
} else {
emptyFramesRead++;
}
if (videoFramesRead >= numDesiredVideoFrames) {
break;
}
}
if (verbose) {
printf("read %u video bytes\n", totBytes);
}
if (numBytes < 0) {
printf("%s: error reading %s, frame %d, %s\n",
progName, aviFileName, videoFramesRead + 1, AVI_strerror());
}
if (videoFramesRead < numDesiredVideoFrames) {
fprintf(stderr,
"%s: warning: could only extract %u seconds of video (%u of %u frames)\n",
progName, (unsigned int)ceil(videoFramesRead / videoFrameRate),
videoFramesRead, numDesiredVideoFrames);
}
if (emptyFramesRead) {
fprintf(stderr,
"%s: warning: %u zero length frames ignored\n",
progName, emptyFramesRead);
}
if (!quiet) {
printf("%u video frames written\n",
videoFramesRead - emptyFramesRead);
}
/* cleanup */
free(buf);
} else {
/* extract audio */
u_int32_t audioBytesRead = 0;
u_char *buf = (u_char*) malloc(8*1024);
u_int32_t numDesiredAudioBytes = AVI_audio_bytes(aviFile);
u_int32_t audioBytesPerSec = 0;
if (start != 0) {
u_int32_t numAudioBytes = numDesiredAudioBytes;
u_int32_t fileDuration;
audioBytesPerSec = AVI_audio_rate(aviFile) *
((AVI_audio_bits(aviFile) + 7) / 8) * AVI_audio_channels(aviFile);
fileDuration = ceil(numAudioBytes / audioBytesPerSec);
numDesiredAudioBytes = duration * audioBytesPerSec;
/* check that start offset is valid */
if (start > fileDuration) {
fprintf(stderr,
"%s: specified start is past the end of the file\n",
progName);
exit(7);
}
if (AVI_seek_start(aviFile)) {
fprintf(stderr,
"%s: bad seek: %s\n",
progName, AVI_strerror());
exit(8);
}
if (AVI_set_audio_position(aviFile, start * audioBytesPerSec)) {
fprintf(stderr,
"%s: bad seek: %s\n",
progName, AVI_strerror());
exit(9);
}
} else {
if (AVI_seek_start(aviFile)) {
fprintf(stderr,
"%s: bad seek: %s\n",
progName, AVI_strerror());
exit(8);
}
if (AVI_set_audio_position(aviFile, 0)) {
fprintf(stderr,
"%s: bad seek: %s\n",
progName, AVI_strerror());
exit(9);
}
}
while ((numBytes = AVI_read_audio(aviFile, (char *)buf, sizeof(buf))) > 0) {
if (fwrite(buf, 1, numBytes, rawFile) != numBytes) {
fprintf(stderr,
"%s: error writing %s: %s\n",
progName, rawFileName, strerror(errno));
break;
}
audioBytesRead += numBytes;
if (numDesiredAudioBytes
&& audioBytesRead >= numDesiredAudioBytes) {
break;
}
}
if (verbose) {
printf("read %u audio bytes\n", audioBytesRead);
}
if (duration && audioBytesRead < numDesiredAudioBytes) {
fprintf(stderr,
"%s: warning: could only extract %u seconds of audio\n",
progName, audioBytesPerSec == 0 ? audioBytesRead : audioBytesRead / audioBytesPerSec);
}
if (!quiet && AVI_audio_bits(aviFile) != 0) {
printf("%u audio samples written\n",
audioBytesRead / ((AVI_audio_bits(aviFile) + 7) / 8));
}
}
/* cleanup */
AVI_close(aviFile);
fclose(rawFile);
return(0);
}
