static int ffmpeg_frame_is_sync (codec_data_t *ifptr,
uint8_t *buffer,
uint32_t buflen,
void *userdata)
{
int ret;
int ftype;
uint32_t offset;
ffmpeg_codec_t *ffmpeg = (ffmpeg_codec_t *)ifptr;
switch (ffmpeg->m_codecId) {
case CODEC_ID_H264:
// look for idr nal
do {
uint8_t nal_type = h264_nal_unit_type(buffer);
if (nal_type == H264_NAL_TYPE_SEQ_PARAM) return 1;
//ffmpeg_message(LOG_DEBUG, "ffmpeg", "nal type %u", nal_type);
if (h264_nal_unit_type_is_slice(nal_type)) {
if (nal_type == H264_NAL_TYPE_IDR_SLICE) return 1;
#if 0
uint8_t slice_type;
if (h264_find_slice_type(buffer, buflen, &slice_type) >= 0) {
return H264_TYPE_IS_I(slice_type) ? 1 : 0;
}
return 0;
#else
return 0;
#endif
}
offset = h264_find_next_start_code(buffer, buflen);
buffer += offset;
buflen -= offset;
} while (offset != 0);
break;
case CODEC_ID_MPEG2VIDEO:
// this would be for mpeg2
ret = MP4AV_Mpeg3FindPictHdr(buffer, buflen, &ftype);
ffmpeg_message(LOG_ERR, "ffmpeg", "ret %u type %u", ret, ftype);
if (ret >= 0 && ftype == 1) {
return 1;
}
break;
case CODEC_ID_MPEG4: {
uint8_t *vop = MP4AV_Mpeg4FindVop(buffer, buflen);
if (vop == NULL) return 0;
if (MP4AV_Mpeg4GetVopType(vop, buflen - (vop - buffer)) == VOP_TYPE_I)
return 1;
}
break;
default:
// for every other, return that it is sync
return 1;
}
return 0;
}
static int ffmpeg_decode (codec_data_t *ptr,
frame_timestamp_t *pts,
int from_rtp,
int *sync_frame,
uint8_t *buffer,
uint32_t buflen,
void *ud)
{
ffmpeg_codec_t *ffmpeg = (ffmpeg_codec_t *)ptr;
uint32_t bytes_used = 0;
int got_picture = 0;
uint64_t ts = pts->msec_timestamp;
//ffmpeg_message(LOG_ERR, "ffmpeg", "%u timestamp "U64, buflen, ts);
if (ffmpeg->m_codec_opened == false) {
// look for header, like above, and open it
bool open_codec = true;
switch (ffmpeg->m_codecId) {
case CODEC_ID_H264:
open_codec = ffmpeg_find_h264_size(ffmpeg, buffer, buflen);
break;
default:
break;
}
if (open_codec) {
if (avcodec_open(ffmpeg->m_c, ffmpeg->m_codec) < 0) {
ffmpeg_message(LOG_CRIT, "ffmpeg", "failed to open codec");
return buflen;
}
ffmpeg->m_codec_opened = true;
ffmpeg_message(LOG_ERR, "ffmpeg", "opened codec");
} else {
ffmpeg_message(LOG_ERR, "ffmpeg", "no open %u "U64, buflen, ts);
return buflen;
}
}
// look and see if we have read the I frame.
if (ffmpeg->m_got_i == false) {
if (ffmpeg_frame_is_sync(ptr, buffer, buflen, NULL) == 0) {
return buflen;
}
ffmpeg->m_got_i = true;
}
int ret;
do {
int local_got_picture;
ret = avcodec_decode_video(ffmpeg->m_c,
ffmpeg->m_picture,
&local_got_picture,
buffer + bytes_used,
buflen - bytes_used);
bytes_used += ret;
//ffmpeg_message(LOG_CRIT, "ffmpeg", "used %d %d", ret, local_got_picture);
got_picture |= local_got_picture;
} while (ret != -1 && bytes_used < buflen);
if (pts->timestamp_is_pts) {
//ffmpeg_message(LOG_ERR, "ffmpeg", "pts timestamp "U64, ts);
if (ffmpeg->m_codecId == CODEC_ID_MPEG2VIDEO) {
if (ffmpeg->pts_convert.frame_rate == 0.0) {
int have_mpeg2;
uint32_t h, w;
double bitrate, aspect_ratio;
uint8_t profile;
MP4AV_Mpeg3ParseSeqHdr(buffer, buflen,
&have_mpeg2,
&h, &w,
&ffmpeg->pts_convert.frame_rate,
&bitrate, &aspect_ratio,
&profile);
}
int ftype;
int header = MP4AV_Mpeg3FindPictHdr(buffer, buflen, &ftype);
if (header >= 0) {
uint16_t temp_ref = MP4AV_Mpeg3PictHdrTempRef(buffer + header);
uint64_t ret;
if (got_picture == 0 ||
mpeg3_find_dts_from_pts(&ffmpeg->pts_convert,
ts,
ftype,
temp_ref,
&ret) < 0) {
ffmpeg->have_cached_ts = false;
return buflen;
}
#if 0
ffmpeg->m_vft->log_msg(LOG_DEBUG, "ffmpeg", "pts "U64" dts "U64" temp %u type %u %u",
ts, ret,
temp_ref, ftype, got_picture);
#endif
ts = ret;
// ffmpeg_message(LOG_ERR, "ffmpeg", "type %d ref %u "U64, ftype, temp_ref, ret);
}
} else if (ffmpeg->m_codecId == CODEC_ID_MPEG4) {
uint8_t *vopstart = MP4AV_Mpeg4FindVop(buffer, buflen);
if (vopstart) {
int ftype = MP4AV_Mpeg4GetVopType(vopstart, buflen);
uint64_t dts;
if (MP4AV_calculate_dts_from_pts(&ffmpeg->pts_to_dts,
ts,
ftype,
&dts) < 0) {
ffmpeg->have_cached_ts = false;
#ifdef DEBUG_FFMPEG_PTS
ffmpeg_message(LOG_DEBUG, "ffmpeg", "type %d %d pts "U64" failed to calc",
ftype, got_picture, ts);
#endif
return buflen;
}
#ifdef DEBUG_FFMPEG_PTS
ffmpeg_message(LOG_DEBUG, "ffmpeg", "type %d %d pts "U64" dts "U64,
ftype, got_picture, ts, dts);
#endif
ts = dts;
}
} else if (ffmpeg->m_codecId == CODEC_ID_H264) {
uint8_t *nal_ptr = buffer;
uint32_t len = buflen;
bool have_b_nal = false;
do {
if (h264_nal_unit_type_is_slice(h264_nal_unit_type(nal_ptr))) {
uint8_t slice_type;
if (h264_find_slice_type(nal_ptr, len, &slice_type, false) >= 0) {
have_b_nal = H264_TYPE_IS_B(slice_type);
}
}
uint32_t offset = h264_find_next_start_code(nal_ptr, len);
if (offset == 0) {
len = 0;
} else {
nal_ptr += offset;
len -= offset;
}
} while (len > 0 && have_b_nal == false);
uint64_t dts;
if (MP4AV_calculate_dts_from_pts(&ffmpeg->pts_to_dts,
ts,
have_b_nal ? VOP_TYPE_B : VOP_TYPE_P,
&dts) < 0) {
ffmpeg->have_cached_ts = false;
#ifdef DEBUG_FFMPEG_PTS
ffmpeg_message(LOG_DEBUG, "ffmpeg", "pts "U64" failed to calc",
ts);
#endif
return buflen;
}
ts = dts;
}
}
if (got_picture != 0) {
if (ffmpeg->m_video_initialized == false) {
double aspect;
if (ffmpeg->m_c->sample_aspect_ratio.den == 0) {
aspect = 0.0; // don't have one
} else {
aspect = av_q2d(ffmpeg->m_c->sample_aspect_ratio);
}
if (ffmpeg->m_c->width == 0) {
return buflen;
}
ffmpeg->m_vft->video_configure(ffmpeg->m_ifptr,
ffmpeg->m_c->width,
ffmpeg->m_c->height,
VIDEO_FORMAT_YUV,
aspect);
ffmpeg->m_video_initialized = true;
}
if (ffmpeg->m_c->pix_fmt != PIX_FMT_YUV420P) {
// convert the image from whatever it is to YUV 4:2:0
AVPicture from, to;
int ret;
// get the buffer to copy into (put it right into the ring buffer)
ret = ffmpeg->m_vft->video_get_buffer(ffmpeg->m_ifptr,
&to.data[0],
&to.data[1],
&to.data[2]);
if (ret == 0) {
return buflen;
}
// set up the AVPicture structures
to.linesize[0] = ffmpeg->m_c->width;
to.linesize[1] = ffmpeg->m_c->width / 2;
to.linesize[2] = ffmpeg->m_c->width / 2;
for (int ix = 0; ix < 4; ix++) {
from.data[ix] = ffmpeg->m_picture->data[ix];
from.linesize[ix] = ffmpeg->m_picture->linesize[ix];
}
img_convert(&to, PIX_FMT_YUV420P,
&from, ffmpeg->m_c->pix_fmt,
ffmpeg->m_c->width, ffmpeg->m_c->height);
ffmpeg->m_vft->video_filled_buffer(ffmpeg->m_ifptr,
ffmpeg->have_cached_ts ?
ffmpeg->cached_ts : ts);
} else {
ffmpeg->m_vft->video_have_frame(ffmpeg->m_ifptr,
ffmpeg->m_picture->data[0],
ffmpeg->m_picture->data[1],
ffmpeg->m_picture->data[2],
ffmpeg->m_picture->linesize[0],
ffmpeg->m_picture->linesize[1],
ffmpeg->have_cached_ts ?
ffmpeg->cached_ts : ts);
}
ffmpeg->cached_ts = ts;
} else {
ffmpeg->cached_ts = ts;
ffmpeg->have_cached_ts = true;
}
#ifdef DEBUG_FFMPEG_FRAME
ffmpeg_message(LOG_DEBUG, "ffmpeg", "used %u of %u", bytes_used, buflen);
#endif
return (buflen);
}
static int iso_decode (codec_data_t *ptr,
frame_timestamp_t *ts,
int from_rtp,
int *sync_frame,
uint8_t *buffer,
uint32_t buflen,
void *userdata)
{
Int iEof = 1;
iso_decode_t *iso = (iso_decode_t *)ptr;
uint32_t used = 0;
if (buflen <= 4) return -1;
// iso_message(LOG_DEBUG, "iso", "frame %d", iso->m_total_frames);
iso->m_total_frames++;
buffer[buflen] = 0;
buffer[buflen + 1] = 0;
buffer[buflen + 2] = 1;
switch (iso->m_decodeState) {
case DECODE_STATE_VOL_SEARCH: {
if (buffer[0] == 0 &&
buffer[1] == 0 &&
(buffer[2] & 0xfc) == 0x80 &&
(buffer[3] & 0x03) == 0x02) {
// we have the short header
iso->m_short_header = 1;
iso->m_pvodec->SetUpBitstreamBuffer((unsigned char *)buffer, buflen);
iso->m_pvodec->video_plane_with_short_header();
iso->m_pvodec->postVO_VOLHeadInit(iso->m_pvodec->getWidth(),
iso->m_pvodec->getHeight(),
&iso->m_bSpatialScalability);
iso_message(LOG_INFO, mp4iso, "Decoding using short headers");
iso->m_vft->video_configure(iso->m_ifptr,
iso->m_pvodec->getWidth(),
iso->m_pvodec->getHeight(),
VIDEO_FORMAT_YUV,
calculate_aspect_ratio(iso));
iso->m_decodeState = DECODE_STATE_NORMAL;
try {
iEof = iso->m_pvodec->h263_decode(FALSE);
} catch (...) {
iso_message(LOG_ERR, mp4iso, "Couldn't decode h263 in vol search");
}
break;
} else {
uint8_t *volhdr = MP4AV_Mpeg4FindVol(buffer, buflen);
if (volhdr != NULL) {
used = volhdr - buffer;
try {
iso->m_pvodec->SetUpBitstreamBuffer((unsigned char *)volhdr, buflen - used);
iso->m_pvodec->decodeVOLHead();
iso->m_pvodec->postVO_VOLHeadInit(iso->m_pvodec->getWidth(),
iso->m_pvodec->getHeight(),
&iso->m_bSpatialScalability);
iso_message(LOG_INFO, mp4iso, "Found VOL");
iso->m_vft->video_configure(iso->m_ifptr,
iso->m_pvodec->getWidth(),
iso->m_pvodec->getHeight(),
VIDEO_FORMAT_YUV,
calculate_aspect_ratio(iso));
iso->m_decodeState = DECODE_STATE_WAIT_I;
used += iso->m_pvodec->get_used_bytes();
} catch (int err) {
iso_message(LOG_DEBUG, mp4iso, "Caught exception in VOL search %d", err);
if (err == 1) used = buflen;
else used += iso->m_pvodec->get_used_bytes();
}
}
}
if (iso->m_decodeState != DECODE_STATE_WAIT_I) {
if (iso->m_vinfo != NULL) {
iso->m_pvodec->FakeOutVOVOLHead(iso->m_vinfo->height,
iso->m_vinfo->width,
30,
&iso->m_bSpatialScalability);
iso->m_vft->video_configure(iso->m_ifptr,
iso->m_vinfo->width,
iso->m_vinfo->height,
VIDEO_FORMAT_YUV,
calculate_aspect_ratio(iso));
iso->m_decodeState = DECODE_STATE_NORMAL;
}
return used;
}
// else fall through
}
case DECODE_STATE_WAIT_I: {
uint8_t *vophdr = MP4AV_Mpeg4FindVop(buffer, buflen);
if (vophdr != NULL) {
used = vophdr - buffer;
}
iso->m_pvodec->SetUpBitstreamBuffer((unsigned char *)buffer + used, buflen + 3 - used);
try {
iEof = iso->m_pvodec->decode(NULL, TRUE);
if (iEof == -1) {
iso->m_num_wait_i_frames++;
return(iso->m_pvodec->get_used_bytes());
}
iso_message(LOG_DEBUG, mp4iso, "Back to normal decode");
iso->m_decodeState = DECODE_STATE_NORMAL;
iso->m_bCachedRefFrame = FALSE;
iso->m_bCachedRefFrameCoded = FALSE;
iso->m_cached_valid = FALSE;
iso->m_cached_time = 0;
} catch (int err) {
if (err != 1)
iso_message(LOG_DEBUG, mp4iso,
"ts "U64",Caught exception in wait_i %d",
ts->msec_timestamp, err);
return (iso->m_pvodec->get_used_bytes());
//return (-1);
}
break;
}
case DECODE_STATE_NORMAL:
try {
if (iso->m_short_header != 0) {
iso->m_pvodec->SetUpBitstreamBuffer((unsigned char *)buffer, buflen + 3);
iEof = iso->m_pvodec->h263_decode(TRUE);
} else {
uint8_t *vophdr = MP4AV_Mpeg4FindVop(buffer, buflen);
if (vophdr != NULL && vophdr != buffer) {
iso_message(LOG_DEBUG, mp4iso, "Illegal code before VOP header");
used = vophdr - buffer;
buflen -= used;
buffer = vophdr;
}
iso->m_pvodec->SetUpBitstreamBuffer((unsigned char *)buffer, buflen + 3);
iEof = iso->m_pvodec->decode(NULL, FALSE, FALSE);
}
} catch (int err) {
// This is because sometimes, the encoder doesn't read all the bytes
// it should out of the rtp packet. The rtp bytestream does a read
// and determines that we're trying to read across bytestreams.
// If we get this, we don't want to change anything - just fall up
// to the decoder thread so it gives us a new timestamp.
if (err == 1) {
// throw from running past end of frame
return -1;
}
iso_message(LOG_DEBUG, mp4iso,
"Mpeg4 ncaught %d -> waiting for I", err);
iso->m_decodeState = DECODE_STATE_WAIT_I;
return (iso->m_pvodec->get_used_bytes());
} catch (...) {
iso_message(LOG_DEBUG, mp4iso,
"Mpeg4 ncaught -> waiting for I");
iso->m_decodeState = DECODE_STATE_WAIT_I;
//return (-1);
return (iso->m_pvodec->get_used_bytes());
}
break;
}
/*
* We've got a good frame. See if we need to display it
*/
const CVOPU8YUVBA *pvopcQuant = NULL;
if (iso->m_pvodec->fSptUsage() == 1) {
//player_debug_message("Sprite");
}
uint64_t displaytime = 0;
int cached_ts = 0;
if (iEof == EOF) {
if (iso->m_bCachedRefFrame) {
iso->m_bCachedRefFrame = FALSE;
if (iso->m_bCachedRefFrameCoded) {
pvopcQuant = iso->m_pvodec->pvopcRefQLater();
displaytime = ts->msec_timestamp;
}
}
} else {
#if 0
iso_message(LOG_DEBUG, mp4iso, "frame "U64" type %d",
ts->msec_timestamp, iso->m_pvodec->vopmd().vopPredType);
#endif
if (iso->m_pvodec->vopmd().vopPredType == BVOP) {
if (iEof != FALSE) {
pvopcQuant = iso->m_pvodec->pvopcReconCurr();
displaytime = ts->msec_timestamp;
}
} else {
if (iso->m_bCachedRefFrame) {
iso->m_bCachedRefFrame = FALSE;
if (iso->m_bCachedRefFrameCoded) {
pvopcQuant = iso->m_pvodec->pvopcRefQPrev();
if (ts->timestamp_is_pts) {
int old_was_valid = iso->m_cached_valid;
displaytime = iso->m_cached_time;
cached_ts = 1;
// old time stamp wasn't valid - instead of calculating it
// ourselves, just punt on it.
if (old_was_valid == 0) {
return (iEof == EOF ? -1 : 0);
}
} else {
displaytime = ts->msec_timestamp;
}
}
}
iso->m_cached_time = ts->msec_timestamp;
iso->m_cached_valid = TRUE;
iso->m_bCachedRefFrame = TRUE;
iso->m_bCachedRefFrameCoded = (iEof != FALSE);
}
}
if (pvopcQuant != NULL) {
#if 0
player_debug_message("frame rtp_ts "U64" disp "U64" cached %d",
ts->msec_timestamp, displaytime, cached_ts);
#endif
/*
* Get the information to the video sync structure
*/
const uint8_t *y, *u, *v;
int pixelw_y, pixelw_uv;
pixelw_y = pvopcQuant->getPlane(Y_PLANE)->where().width;
pixelw_uv = pvopcQuant->getPlane(U_PLANE)->where().width;
y = (const uint8_t *)pvopcQuant->getPlane(Y_PLANE)->pixels(0,0);
u = (const uint8_t *)pvopcQuant->getPlane(U_PLANE)->pixels(0,0);
v = (const uint8_t *)pvopcQuant->getPlane(V_PLANE)->pixels(0,0);
iso->m_last_time = displaytime;
#if 0
player_debug_message("Adding video at "U64" %d", displaytime,
iso->m_pvodec->vopmd().vopPredType);
#endif
iso->m_vft->video_have_frame(iso->m_ifptr,
y,
u,
v,
pixelw_y,
pixelw_uv,
displaytime);
} else {
iso_message(LOG_DEBUG, mp4iso, "decode but no frame "U64, ts->msec_timestamp);
}
return (iso->m_pvodec->get_used_bytes() + used);
}
static int xvid_decode (codec_data_t *ptr,
frame_timestamp_t *pts,
int from_rtp,
int *sync_frame,
uint8_t *buffer,
uint32_t blen,
void *ud)
{
int ret;
xvid_codec_t *xvid = (xvid_codec_t *)ptr;
uint64_t ts = pts->msec_timestamp;
int buflen = blen, used = 0;
uint8_t *vop = MP4AV_Mpeg4FindVop(buffer, blen);
int type = 0;
if (vop != NULL) {
type = MP4AV_Mpeg4GetVopType(vop, blen);
uint64_t dts;
if (MP4AV_calculate_dts_from_pts(&xvid->pts_to_dts,
ts,
type,
&dts) < 0) {
return buflen;
}
ts = dts;
}
#if 0
xvid_message(LOG_DEBUG, "xvidif", "%u at %llu %d",
blen, ts, type);
#endif
if (xvid->m_decodeState == XVID_STATE_VO_SEARCH) {
ret = look_for_vol(xvid, buffer, buflen);
if (ret < 0) {
return buflen;
}
xvid->m_decodeState = XVID_STATE_NORMAL;
}
xvid_dec_frame_t dec;
xvid_dec_stats_t stats;
do {
memset(&dec, 0, sizeof(dec));
memset(&stats, 0, sizeof(dec));
dec.version = XVID_VERSION;
dec.bitstream = buffer;
dec.length = buflen;
dec.general = 0;
dec.output.csp = XVID_CSP_INTERNAL;
stats.version = XVID_VERSION;
ret = xvid_decore(xvid->m_xvid_handle,
XVID_DEC_DECODE,
&dec,
&stats);
#if 0
xvid_message(LOG_DEBUG, "xvidif", "ret %d type %d blen %d of %u",
ret, stats.type, buflen, blen);
#endif
if (ret < 0 || ret > buflen) {
buflen = 0;
used = blen;
} else {
buflen -= ret;
buffer += ret;
used += ret;
}
// we could check for vol changes, etc here, if we wanted.
} while (buflen > 4 && stats.type <= 0);
if (stats.type > 0) {
xvid->m_vft->video_have_frame(xvid->m_ifptr,
(const uint8_t *)dec.output.plane[0],
(const uint8_t *)dec.output.plane[1],
(const uint8_t *)dec.output.plane[2],
dec.output.stride[0],
dec.output.stride[1],
ts);
}
#if 0
xvid->m_vft->log_msg(LOG_DEBUG, "xvid", "error returned %d", ret);
#endif
xvid->m_total_frames++;
return (used);
}
