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Merge remote-tracking branch 'qatar/master'

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* qatar/master:
  h264: drop ff_h264_ prefix from static function ff_h264_decode_rbsp_trailing()
  h264: Make ff_h264_decode_end() static, it is not used externally.
  output-example: K&R formatting cosmetics, comment spelling fixes
  avf: make the example output the proper message
  avf: fix audio writing in the output-example
  mov: don't overwrite existing indexes.
  lzw: fix potential integer overflow.
  truemotion: forbid invalid VLC bitsizes and token values.
  truemotion2: handle out-of-frame motion vectors through edge extension.
  configure: Check for a different SDL function

Conflicts:
	configure
	doc/examples/muxing.c
	libavcodec/truemotion2.c

Merged-by: Michael Niedermayer <michaelni@gmx.at>
pull/4/merge
Michael Niedermayer 13 years ago
parent 96df29c318 b691fd7a4d
commit 2b6325cacb
7 changed files with 223 additions and 140 deletions
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  1. 2
      configure
  2. 192
      doc/examples/muxing.c
  3. 10
      libavcodec/h264.c
  4. 1
      libavcodec/h264.h
  5. 2
      libavcodec/lzw.c
  6. 137
      libavcodec/truemotion2.c
  7. 19
      libavformat/mov.c

2
configure vendored
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@ -3219,7 +3219,7 @@ if enabled libdc1394; then
fi
SDL_CONFIG="${cross_prefix}sdl-config"
if check_pkg_config sdl SDL_version.h SDL_Linked_Version; then
if check_pkg_config sdl SDL_events.h SDL_PollEvent; then
check_cpp_condition SDL.h "(SDL_MAJOR_VERSION<<16 | SDL_MINOR_VERSION<<8 | SDL_PATCHLEVEL) >= 0x010201" $sdl_cflags &&
enable sdl &&
check_struct SDL.h SDL_VideoInfo current_w $sdl_cflags && enable sdl_video_size

192
doc/examples/muxing.c
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@ -43,7 +43,7 @@
#define STREAM_DURATION 200.0
#define STREAM_FRAME_RATE 25 /* 25 images/s */
#define STREAM_NB_FRAMES ((int)(STREAM_DURATION * STREAM_FRAME_RATE))
#define STREAM_PIX_FMT PIX_FMT_YUV420P /* default pix_fmt */
#define STREAM_PIX_FMT PIX_FMT_YUV420P /* default pix_fmt */
static int sws_flags = SWS_BICUBIC;
@ -80,10 +80,10 @@ static AVStream *add_audio_stream(AVFormatContext *oc, enum CodecID codec_id)
c = st->codec;
/* put sample parameters */
c->sample_fmt = AV_SAMPLE_FMT_S16;
c->bit_rate = 64000;
c->sample_fmt = AV_SAMPLE_FMT_S16;
c->bit_rate = 64000;
c->sample_rate = 44100;
c->channels = 2;
c->channels = 2;
// some formats want stream headers to be separate
if (oc->oformat->flags & AVFMT_GLOBALHEADER)
@ -105,7 +105,7 @@ static void open_audio(AVFormatContext *oc, AVStream *st)
}
/* init signal generator */
t = 0;
t = 0;
tincr = 2 * M_PI * 110.0 / c->sample_rate;
/* increment frequency by 110 Hz per second */
tincr2 = 2 * M_PI * 110.0 / c->sample_rate / c->sample_rate;
@ -114,12 +114,13 @@ static void open_audio(AVFormatContext *oc, AVStream *st)
audio_input_frame_size = 10000;
else
audio_input_frame_size = c->frame_size;
samples = av_malloc(audio_input_frame_size * av_get_bytes_per_sample(c->sample_fmt)
* c->channels);
samples = av_malloc(audio_input_frame_size *
av_get_bytes_per_sample(c->sample_fmt) *
c->channels);
}
/* prepare a 16 bit dummy audio frame of 'frame_size' samples and
'nb_channels' channels */
/* Prepare a 16 bit dummy audio frame of 'frame_size' samples and
* 'nb_channels' channels. */
static void get_audio_frame(int16_t *samples, int frame_size, int nb_channels)
{
int j, i, v;
@ -128,9 +129,9 @@ static void get_audio_frame(int16_t *samples, int frame_size, int nb_channels)
q = samples;
for (j = 0; j < frame_size; j++) {
v = (int)(sin(t) * 10000);
for(i = 0; i < nb_channels; i++)
for (i = 0; i < nb_channels; i++)
*q++ = v;
t += tincr;
t += tincr;
tincr += tincr2;
}
}
@ -138,7 +139,7 @@ static void get_audio_frame(int16_t *samples, int frame_size, int nb_channels)
static void write_audio_frame(AVFormatContext *oc, AVStream *st)
{
AVCodecContext *c;
AVPacket pkt;
AVPacket pkt = { 0 }; // data and size must be 0;
AVFrame *frame = avcodec_alloc_frame();
int got_packet;
@ -147,17 +148,19 @@ static void write_audio_frame(AVFormatContext *oc, AVStream *st)
get_audio_frame(samples, audio_input_frame_size, c->channels);
frame->nb_samples = audio_input_frame_size;
avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt, (uint8_t *)samples,
audio_input_frame_size * av_get_bytes_per_sample(c->sample_fmt)
* c->channels, 1);
avcodec_fill_audio_frame(frame, c->channels, c->sample_fmt,
(uint8_t *)samples,
audio_input_frame_size *
av_get_bytes_per_sample(c->sample_fmt) *
c->channels, 1);
avcodec_encode_audio2(c, &pkt, frame, &got_packet);
if (!got_packet)
return;
pkt.stream_index= st->index;
pkt.stream_index = st->index;
/* write the compressed frame in the media file */
/* Write the compressed frame to the media file. */
if (av_interleaved_write_frame(oc, &pkt) != 0) {
fprintf(stderr, "Error while writing audio frame\n");
exit(1);
@ -178,7 +181,7 @@ static AVFrame *picture, *tmp_picture;
static uint8_t *video_outbuf;
static int frame_count, video_outbuf_size;
/* add a video output stream */
/* Add a video output stream. */
static AVStream *add_video_stream(AVFormatContext *oc, enum CodecID codec_id)
{
AVCodecContext *c;
@ -210,30 +213,30 @@ static AVStream *add_video_stream(AVFormatContext *oc, enum CodecID codec_id)
c->codec_id = codec_id;
/* put sample parameters */
/* Put sample parameters. */
c->bit_rate = 400000;
/* resolution must be a multiple of two */
c->width = 352;
c->height = 288;
/* time base: this is the fundamental unit of time (in seconds) in terms
of which frame timestamps are represented. for fixed-fps content,
timebase should be 1/framerate and timestamp increments should be
identically 1. */
/* Resolution must be a multiple of two. */
c->width = 352;
c->height = 288;
/* timebase: This is the fundamental unit of time (in seconds) in terms
* of which frame timestamps are represented. For fixed-fps content,
* timebase should be 1/framerate and timestamp increments should be
* identical to 1. */
c->time_base.den = STREAM_FRAME_RATE;
c->time_base.num = 1;
c->gop_size = 12; /* emit one intra frame every twelve frames at most */
c->pix_fmt = STREAM_PIX_FMT;
c->gop_size = 12; /* emit one intra frame every twelve frames at most */
c->pix_fmt = STREAM_PIX_FMT;
if (c->codec_id == CODEC_ID_MPEG2VIDEO) {
/* just for testing, we also add B frames */
c->max_b_frames = 2;
}
if (c->codec_id == CODEC_ID_MPEG1VIDEO){
if (c->codec_id == CODEC_ID_MPEG1VIDEO) {
/* Needed to avoid using macroblocks in which some coeffs overflow.
This does not happen with normal video, it just happens here as
the motion of the chroma plane does not match the luma plane. */
c->mb_decision=2;
* This does not happen with normal video, it just happens here as
* the motion of the chroma plane does not match the luma plane. */
c->mb_decision = 2;
}
// some formats want stream headers to be separate
/* Some formats want stream headers to be separate. */
if (oc->oformat->flags & AVFMT_GLOBALHEADER)
c->flags |= CODEC_FLAG_GLOBAL_HEADER;
@ -249,7 +252,7 @@ static AVFrame *alloc_picture(enum PixelFormat pix_fmt, int width, int height)
picture = avcodec_alloc_frame();
if (!picture)
return NULL;
size = avpicture_get_size(pix_fmt, width, height);
size = avpicture_get_size(pix_fmt, width, height);
picture_buf = av_malloc(size);
if (!picture_buf) {
av_free(picture);
@ -274,26 +277,26 @@ static void open_video(AVFormatContext *oc, AVStream *st)
video_outbuf = NULL;
if (!(oc->oformat->flags & AVFMT_RAWPICTURE)) {
/* allocate output buffer */
/* XXX: API change will be done */
/* buffers passed into lav* can be allocated any way you prefer,
as long as they're aligned enough for the architecture, and
they're freed appropriately (such as using av_free for buffers
allocated with av_malloc) */
/* Allocate output buffer. */
/* XXX: API change will be done. */
/* Buffers passed into lav* can be allocated any way you prefer,
* as long as they're aligned enough for the architecture, and
* they're freed appropriately (such as using av_free for buffers
* allocated with av_malloc). */
video_outbuf_size = 200000;
video_outbuf = av_malloc(video_outbuf_size);
video_outbuf = av_malloc(video_outbuf_size);
}
/* allocate the encoded raw picture */
/* Allocate the encoded raw picture. */
picture = alloc_picture(c->pix_fmt, c->width, c->height);
if (!picture) {
fprintf(stderr, "Could not allocate picture\n");
exit(1);
}
/* if the output format is not YUV420P, then a temporary YUV420P
picture is needed too. It is then converted to the required
output format */
/* If the output format is not YUV420P, then a temporary YUV420P
* picture is needed too. It is then converted to the required
* output format. */
tmp_picture = NULL;
if (c->pix_fmt != PIX_FMT_YUV420P) {
tmp_picture = alloc_picture(PIX_FMT_YUV420P, c->width, c->height);
@ -304,23 +307,22 @@ static void open_video(AVFormatContext *oc, AVStream *st)
}
}
/* prepare a dummy image */
static void fill_yuv_image(AVFrame *pict, int frame_index, int width, int height)
/* Prepare a dummy image. */
static void fill_yuv_image(AVFrame *pict, int frame_index,
int width, int height)
{
int x, y, i;
i = frame_index;
/* Y */
for (y = 0; y < height; y++) {
for (x = 0; x < width; x++) {
for (y = 0; y < height; y++)
for (x = 0; x < width; x++)
pict->data[0][y * pict->linesize[0] + x] = x + y + i * 3;
}
}
/* Cb and Cr */
for (y = 0; y < height/2; y++) {
for (x = 0; x < width/2; x++) {
for (y = 0; y < height / 2; y++) {
for (x = 0; x < width / 2; x++) {
pict->data[1][y * pict->linesize[1] + x] = 128 + y + i * 2;
pict->data[2][y * pict->linesize[2] + x] = 64 + x + i * 5;
}
@ -336,13 +338,13 @@ static void write_video_frame(AVFormatContext *oc, AVStream *st)
c = st->codec;
if (frame_count >= STREAM_NB_FRAMES) {
/* no more frame to compress. The codec has a latency of a few
frames if using B frames, so we get the last frames by
passing the same picture again */
/* No more frames to compress. The codec has a latency of a few
* frames if using B-frames, so we get the last frames by
* passing the same picture again. */
} else {
if (c->pix_fmt != PIX_FMT_YUV420P) {
/* as we only generate a YUV420P picture, we must convert it
to the codec pixel format if needed */
* to the codec pixel format if needed */
if (img_convert_ctx == NULL) {
img_convert_ctx = sws_getContext(c->width, c->height,
PIX_FMT_YUV420P,
@ -350,7 +352,8 @@ static void write_video_frame(AVFormatContext *oc, AVStream *st)
c->pix_fmt,
sws_flags, NULL, NULL, NULL);
if (img_convert_ctx == NULL) {
fprintf(stderr, "Cannot initialize the conversion context\n");
fprintf(stderr,
"Cannot initialize the conversion context\n");
exit(1);
}
}
@ -362,36 +365,38 @@ static void write_video_frame(AVFormatContext *oc, AVStream *st)
}
}
if (oc->oformat->flags & AVFMT_RAWPICTURE) {
/* raw video case. The API will change slightly in the near
future for that. */
/* Raw video case - the API will change slightly in the near
* future for that. */
AVPacket pkt;
av_init_packet(&pkt);
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.stream_index = st->index;
pkt.data = (uint8_t *)picture;
pkt.size = sizeof(AVPicture);
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.stream_index = st->index;
pkt.data = (uint8_t *)picture;
pkt.size = sizeof(AVPicture);
ret = av_interleaved_write_frame(oc, &pkt);
} else {
/* encode the image */
out_size = avcodec_encode_video(c, video_outbuf, video_outbuf_size, picture);
/* if zero size, it means the image was buffered */
out_size = avcodec_encode_video(c, video_outbuf,
video_outbuf_size, picture);
/* If size is zero, it means the image was buffered. */
if (out_size > 0) {
AVPacket pkt;
av_init_packet(&pkt);
if (c->coded_frame->pts != AV_NOPTS_VALUE)
pkt.pts= av_rescale_q(c->coded_frame->pts, c->time_base, st->time_base);
if(c->coded_frame->key_frame)
pkt.pts = av_rescale_q(c->coded_frame->pts,
c->time_base, st->time_base);
if (c->coded_frame->key_frame)
pkt.flags |= AV_PKT_FLAG_KEY;
pkt.stream_index = st->index;
pkt.data = video_outbuf;
pkt.size = out_size;
pkt.data = video_outbuf;
pkt.size = out_size;
/* write the compressed frame in the media file */
/* Write the compressed frame to the media file. */
ret = av_interleaved_write_frame(oc, &pkt);
} else {
ret = 0;
@ -428,7 +433,7 @@ int main(int argc, char **argv)
double audio_pts, video_pts;
int i;
/* initialize libavcodec, and register all codecs and formats */
/* Initialize libavcodec, and register all codecs and formats. */
av_register_all();
if (argc != 2) {
@ -453,8 +458,8 @@ int main(int argc, char **argv)
}
fmt = oc->oformat;
/* add the audio and video streams using the default format codecs
and initialize the codecs */
/* Add the audio and video streams using the default format codecs
* and initialize the codecs. */
video_st = NULL;
audio_st = NULL;
if (fmt->video_codec != CODEC_ID_NONE) {
@ -464,15 +469,15 @@ int main(int argc, char **argv)
audio_st = add_audio_stream(oc, fmt->audio_codec);
}
av_dump_format(oc, 0, filename, 1);
/* now that all the parameters are set, we can open the audio and
video codecs and allocate the necessary encode buffers */
/* Now that all the parameters are set, we can open the audio and
* video codecs and allocate the necessary encode buffers. */
if (video_st)
open_video(oc, video_st);
if (audio_st)
open_audio(oc, audio_st);
av_dump_format(oc, 0, filename, 1);
/* open the output file, if needed */
if (!(fmt->flags & AVFMT_NOFILE)) {
if (avio_open(&oc->pb, filename, AVIO_FLAG_WRITE) < 0) {
@ -481,18 +486,20 @@ int main(int argc, char **argv)
}
}
/* write the stream header, if any */
/* Write the stream header, if any. */
avformat_write_header(oc, NULL);
picture->pts = 0;
for(;;) {
/* compute current audio and video time */
for (;;) {
/* Compute current audio and video time. */
if (audio_st)
audio_pts = (double)audio_st->pts.val * audio_st->time_base.num / audio_st->time_base.den;
else
audio_pts = 0.0;
if (video_st)
video_pts = (double)video_st->pts.val * video_st->time_base.num / video_st->time_base.den;
video_pts = (double)video_st->pts.val * video_st->time_base.num /
video_st->time_base.den;
else
video_pts = 0.0;
@ -509,28 +516,27 @@ int main(int argc, char **argv)
}
}
/* write the trailer, if any. the trailer must be written
* before you close the CodecContexts open when you wrote the
* header; otherwise write_trailer may try to use memory that
* was freed on av_codec_close() */
/* Write the trailer, if any. The trailer must be written before you
* close the CodecContexts open when you wrote the header; otherwise
* av_write_trailer() may try to use memory that was freed on
* av_codec_close(). */
av_write_trailer(oc);
/* close each codec */
/* Close each codec. */
if (video_st)
close_video(oc, video_st);
if (audio_st)
close_audio(oc, audio_st);
/* free the streams */
for(i = 0; i < oc->nb_streams; i++) {
/* Free the streams. */
for (i = 0; i < oc->nb_streams; i++) {
av_freep(&oc->streams[i]->codec);
av_freep(&oc->streams[i]);
}
if (!(fmt->flags & AVFMT_NOFILE)) {
/* close the output file */
if (!(fmt->flags & AVFMT_NOFILE))
/* Close the output file. */
avio_close(oc->pb);
}
/* free the stream */
av_free(oc);

10
libavcodec/h264.c
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@ -271,7 +271,7 @@ nsc:
* Identify the exact end of the bitstream
* @return the length of the trailing, or 0 if damaged
*/
static int ff_h264_decode_rbsp_trailing(H264Context *h, const uint8_t *src)
static int decode_rbsp_trailing(H264Context *h, const uint8_t *src)
{
int v = *src;
int r;
@ -4260,7 +4260,7 @@ static int decode_nal_units(H264Context *h, const uint8_t *buf, int buf_size)
dst_length--;
bit_length = !dst_length ? 0
: (8 * dst_length -
ff_h264_decode_rbsp_trailing(h, ptr + dst_length - 1));
decode_rbsp_trailing(h, ptr + dst_length - 1));
if (s->avctx->debug & FF_DEBUG_STARTCODE)
av_log(h->s.avctx, AV_LOG_DEBUG, "NAL %d/%d at %d/%d length %d pass %d\n", hx->nal_unit_type, hx->nal_ref_idc, buf_index, buf_size, dst_length, pass);
@ -4606,7 +4606,7 @@ av_cold void ff_h264_free_context(H264Context *h)
av_freep(h->pps_buffers + i);
}
av_cold int ff_h264_decode_end(AVCodecContext *avctx)
static av_cold int h264_decode_end(AVCodecContext *avctx)
{
H264Context *h = avctx->priv_data;
MpegEncContext *s = &h->s;
@ -4664,7 +4664,7 @@ AVCodec ff_h264_decoder = {
.id = CODEC_ID_H264,
.priv_data_size = sizeof(H264Context),
.init = ff_h264_decode_init,
.close = ff_h264_decode_end,
.close = h264_decode_end,
.decode = decode_frame,
.capabilities = /*CODEC_CAP_DRAW_HORIZ_BAND |*/ CODEC_CAP_DR1 |
CODEC_CAP_DELAY | CODEC_CAP_SLICE_THREADS |
@ -4684,7 +4684,7 @@ AVCodec ff_h264_vdpau_decoder = {
.id = CODEC_ID_H264,
.priv_data_size = sizeof(H264Context),
.init = ff_h264_decode_init,
.close = ff_h264_decode_end,
.close = h264_decode_end,
.decode = decode_frame,
.capabilities = CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU,
.flush = flush_dpb,

1
libavcodec/h264.h
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@ -678,7 +678,6 @@ void ff_h264_hl_decode_mb(H264Context *h);
int ff_h264_frame_start(H264Context *h);
int ff_h264_decode_extradata(H264Context *h, const uint8_t *buf, int size);
av_cold int ff_h264_decode_init(AVCodecContext *avctx);
av_cold int ff_h264_decode_end(AVCodecContext *avctx);
av_cold void ff_h264_decode_init_vlc(void);
/**

2
libavcodec/lzw.c
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@ -102,7 +102,7 @@ void ff_lzw_decode_tail(LZWState *p)
if(s->mode == FF_LZW_GIF) {
while (s->bs > 0) {
if (s->pbuf + s->bs >= s->ebuf) {
if (s->bs >= s->ebuf - s->pbuf) {
s->pbuf = s->ebuf;
break;
} else {

137
libavcodec/truemotion2.c
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@ -60,7 +60,9 @@ typedef struct TM2Context{
int *clast;
/* data for current and previous frame */
int *Y1_base, *U1_base, *V1_base, *Y2_base, *U2_base, *V2_base;
int *Y1, *U1, *V1, *Y2, *U2, *V2;
int y_stride, uv_stride;
int cur;
} TM2Context;
@ -131,7 +133,7 @@ static int tm2_build_huff_table(TM2Context *ctx, TM2Codes *code)
/* check for correct codes parameters */
if((huff.val_bits < 1) || (huff.val_bits > 32) ||
(huff.max_bits < 0) || (huff.max_bits > 32)) {
(huff.max_bits < 0) || (huff.max_bits > 25)) {
av_log(ctx->avctx, AV_LOG_ERROR, "Incorrect tree parameters - literal length: %i, max code length: %i\n",
huff.val_bits, huff.max_bits);
return -1;
@ -328,10 +330,21 @@ static int tm2_read_stream(TM2Context *ctx, const uint8_t *buf, int stream_id, i
return -1;
}
ctx->tokens[stream_id][i] = tm2_get_token(&ctx->gb, &codes);
if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >= TM2_DELTAS) {
av_log(ctx->avctx, AV_LOG_ERROR, "Invalid delta token index %d for type %d, n=%d\n",
ctx->tokens[stream_id][i], stream_id, i);
return AVERROR_INVALIDDATA;
}
}
} else {
for(i = 0; i < toks; i++)
for(i = 0; i < toks; i++) {
ctx->tokens[stream_id][i] = codes.recode[0];
if (stream_id <= TM2_MOT && ctx->tokens[stream_id][i] >= TM2_DELTAS) {
av_log(ctx->avctx, AV_LOG_ERROR, "Invalid delta token index %d for type %d, n=%d\n",
ctx->tokens[stream_id][i], stream_id, i);
return AVERROR_INVALIDDATA;
}
}
}
tm2_free_codes(&codes);
@ -361,9 +374,9 @@ static inline int GET_TOK(TM2Context *ctx,int type) {
int *Y, *U, *V;\
int Ystride, Ustride, Vstride;\
\
Ystride = ctx->avctx->width;\
Vstride = (ctx->avctx->width + 1) >> 1;\
Ustride = (ctx->avctx->width + 1) >> 1;\
Ystride = ctx->y_stride;\
Vstride = ctx->uv_stride;\
Ustride = ctx->uv_stride;\
Y = (ctx->cur?ctx->Y2:ctx->Y1) + by * 4 * Ystride + bx * 4;\
V = (ctx->cur?ctx->V2:ctx->V1) + by * 2 * Vstride + bx * 2;\
U = (ctx->cur?ctx->U2:ctx->U1) + by * 2 * Ustride + bx * 2;\
@ -651,6 +664,8 @@ static inline void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int b
mx = GET_TOK(ctx, TM2_MOT);
my = GET_TOK(ctx, TM2_MOT);
mx = av_clip(mx, -(bx * 4 + 4), ctx->avctx->width - bx * 4);
my = av_clip(my, -(by * 4 + 4), ctx->avctx->height - by * 4);
if (4*bx+mx<0 || 4*by+my<0 || 4*bx+mx+4 > ctx->avctx->width || 4*by+my+4 > ctx->avctx->height) {
av_log(0,0, "MV out of picture\n");
@ -696,15 +711,12 @@ static inline void tm2_motion_block(TM2Context *ctx, AVFrame *pic, int bx, int b
static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p)
{
int i, j;
int bw, bh;
int w = ctx->avctx->width, h = ctx->avctx->height, bw = w >> 2, bh = h >> 2, cw = w >> 1;
int type;
int keyframe = 1;
int *Y, *U, *V;
uint8_t *dst;
bw = ctx->avctx->width >> 2;
bh = ctx->avctx->height >> 2;
for(i = 0; i < TM2_NUM_STREAMS; i++)
ctx->tok_ptrs[i] = 0;
@ -757,17 +769,54 @@ static int tm2_decode_blocks(TM2Context *ctx, AVFrame *p)
U = (ctx->cur?ctx->U2:ctx->U1);
V = (ctx->cur?ctx->V2:ctx->V1);
dst = p->data[0];
for(j = 0; j < ctx->avctx->height; j++){
for(i = 0; i < ctx->avctx->width; i++){
for(j = 0; j < h; j++){
for(i = 0; i < w; i++){
int y = Y[i], u = U[i >> 1], v = V[i >> 1];
dst[3*i+0] = av_clip_uint8(y + v);
dst[3*i+1] = av_clip_uint8(y);
dst[3*i+2] = av_clip_uint8(y + u);
}
Y += ctx->avctx->width;
/* horizontal edge extension */
Y[-4] = Y[-3] = Y[-2] = Y[-1] = Y[0];
Y[w + 3] = Y[w + 2] = Y[w + 1] = Y[w] = Y[w - 1];
/* vertical edge extension */
if (j == 0) {
memcpy(Y - 4 - 1 * ctx->y_stride, Y - 4, ctx->y_stride);
memcpy(Y - 4 - 2 * ctx->y_stride, Y - 4, ctx->y_stride);
memcpy(Y - 4 - 3 * ctx->y_stride, Y - 4, ctx->y_stride);
memcpy(Y - 4 - 4 * ctx->y_stride, Y - 4, ctx->y_stride);
} else if (j == h - 1) {
memcpy(Y - 4 + 1 * ctx->y_stride, Y - 4, ctx->y_stride);
memcpy(Y - 4 + 2 * ctx->y_stride, Y - 4, ctx->y_stride);
memcpy(Y - 4 + 3 * ctx->y_stride, Y - 4, ctx->y_stride);
memcpy(Y - 4 + 4 * ctx->y_stride, Y - 4, ctx->y_stride);
}
Y += ctx->y_stride;
if (j & 1) {
U += ctx->avctx->width >> 1;
V += ctx->avctx->width >> 1;
/* horizontal edge extension */
U[-2] = U[-1] = U[0];
V[-2] = V[-1] = V[0];
U[cw + 1] = U[cw] = U[cw - 1];
V[cw + 1] = V[cw] = V[cw - 1];
/* vertical edge extension */
if (j == 1) {
memcpy(U - 2 - 1 * ctx->uv_stride, U - 2, ctx->uv_stride);
memcpy(V - 2 - 1 * ctx->uv_stride, V - 2, ctx->uv_stride);
memcpy(U - 2 - 2 * ctx->uv_stride, U - 2, ctx->uv_stride);
memcpy(V - 2 - 2 * ctx->uv_stride, V - 2, ctx->uv_stride);
} else if (j == h - 1) {
memcpy(U - 2 + 1 * ctx->uv_stride, U - 2, ctx->uv_stride);
memcpy(V - 2 + 1 * ctx->uv_stride, V - 2, ctx->uv_stride);
memcpy(U - 2 + 2 * ctx->uv_stride, U - 2, ctx->uv_stride);
memcpy(V - 2 + 2 * ctx->uv_stride, V - 2, ctx->uv_stride);
}
U += ctx->uv_stride;
V += ctx->uv_stride;
}
dst += p->linesize[0];
}
@ -813,9 +862,10 @@ static int decode_frame(AVCodecContext *avctx,
av_log(avctx, AV_LOG_ERROR, "no space for tm2_read_stream\n");
return AVERROR_INVALIDDATA;
}
t = tm2_read_stream(l, l->buffer + skip, tm2_stream_order[i], buf_size - skip);
if(t == -1){
return -1;
if(t < 0){
return t;
}
skip += t;
}
@ -834,7 +884,7 @@ static int decode_frame(AVCodecContext *avctx,
static av_cold int decode_init(AVCodecContext *avctx){
TM2Context * const l = avctx->priv_data;
int i;
int i, w = avctx->width, h = avctx->height;
if((avctx->width & 3) || (avctx->height & 3)){
av_log(avctx, AV_LOG_ERROR, "Width and height must be multiple of 4\n");
@ -848,21 +898,46 @@ static av_cold int decode_init(AVCodecContext *avctx){
ff_dsputil_init(&l->dsp, avctx);
l->last = av_malloc(4 * sizeof(int) * (avctx->width >> 2));
l->clast = av_malloc(4 * sizeof(int) * (avctx->width >> 2));
l->last = av_malloc(4 * sizeof(*l->last) * (w >> 2));
l->clast = av_malloc(4 * sizeof(*l->clast) * (w >> 2));
for(i = 0; i < TM2_NUM_STREAMS; i++) {
l->tokens[i] = NULL;
l->tok_lens[i] = 0;
}
l->Y1 = av_malloc(sizeof(int) * avctx->width * avctx->height);
l->U1 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
l->V1 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
l->Y2 = av_malloc(sizeof(int) * avctx->width * avctx->height);
l->U2 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
l->V2 = av_malloc(sizeof(int) * ((avctx->width + 1) >> 1) * ((avctx->height + 1) >> 1));
w += 8;
h += 8;
l->Y1_base = av_malloc(sizeof(*l->Y1_base) * w * h);
l->Y2_base = av_malloc(sizeof(*l->Y2_base) * w * h);
l->y_stride = w;
w = (w + 1) >> 1;
h = (h + 1) >> 1;
l->U1_base = av_malloc(sizeof(*l->U1_base) * w * h);
l->V1_base = av_malloc(sizeof(*l->V1_base) * w * h);
l->U2_base = av_malloc(sizeof(*l->U2_base) * w * h);
l->V2_base = av_malloc(sizeof(*l->V1_base) * w * h);
l->uv_stride = w;
l->cur = 0;
if (!l->Y1_base || !l->Y2_base || !l->U1_base ||
!l->V1_base || !l->U2_base || !l->V2_base ||
!l->last || !l->clast) {
av_freep(l->Y1_base);
av_freep(l->Y2_base);
av_freep(l->U1_base);
av_freep(l->U2_base);
av_freep(l->V1_base);
av_freep(l->V2_base);
av_freep(l->last);
av_freep(l->clast);
return AVERROR(ENOMEM);
}
l->Y1 = l->Y1_base + l->y_stride * 4 + 4;
l->Y2 = l->Y2_base + l->y_stride * 4 + 4;
l->U1 = l->U1_base + l->uv_stride * 2 + 2;
l->U2 = l->U2_base + l->uv_stride * 2 + 2;
l->V1 = l->V1_base + l->uv_stride * 2 + 2;
l->V2 = l->V2_base + l->uv_stride * 2 + 2;
return 0;
}
@ -877,12 +952,12 @@ static av_cold int decode_end(AVCodecContext *avctx){
for(i = 0; i < TM2_NUM_STREAMS; i++)
av_free(l->tokens[i]);
if(l->Y1){
av_free(l->Y1);
av_free(l->U1);
av_free(l->V1);
av_free(l->Y2);
av_free(l->U2);
av_free(l->V2);
av_free(l->Y1_base);
av_free(l->U1_base);
av_free(l->V1_base);
av_free(l->Y2_base);
av_free(l->U2_base);
av_free(l->V2_base);
}
av_freep(&l->buffer);
l->buffer_size = 0;

19
libavformat/mov.c
Unescape View File

@ -1803,6 +1803,7 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
unsigned int stps_index = 0;
unsigned int i, j;
uint64_t stream_size = 0;
AVIndexEntry *mem;
/* adjust first dts according to edit list */
if ((sc->empty_duration || sc->start_time) && mov->time_scale > 0) {
@ -1832,12 +1833,13 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
if (!sc->sample_count || st->nb_index_entries)
return;
if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries))
if (sc->sample_count >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
return;
st->index_entries = av_malloc(sc->sample_count*sizeof(*st->index_entries));
if (!st->index_entries)
mem = av_realloc(st->index_entries, (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries));
if (!mem)
return;
st->index_entries_allocated_size = sc->sample_count*sizeof(*st->index_entries);
st->index_entries = mem;
st->index_entries_allocated_size = (st->nb_index_entries + sc->sample_count) * sizeof(*st->index_entries);
for (i = 0; i < sc->chunk_count; i++) {
current_offset = sc->chunk_offsets[i];
@ -1921,12 +1923,13 @@ static void mov_build_index(MOVContext *mov, AVStream *st)
}
av_dlog(mov->fc, "chunk count %d\n", total);
if (total >= UINT_MAX / sizeof(*st->index_entries))
if (total >= UINT_MAX / sizeof(*st->index_entries) - st->nb_index_entries)
return;
st->index_entries = av_malloc(total*sizeof(*st->index_entries));
if (!st->index_entries)
mem = av_realloc(st->index_entries, (st->nb_index_entries + total) * sizeof(*st->index_entries));
if (!mem)
return;
st->index_entries_allocated_size = total*sizeof(*st->index_entries);
st->index_entries = mem;
st->index_entries_allocated_size = (st->nb_index_entries + total) * sizeof(*st->index_entries);
// populate index
for (i = 0; i < sc->chunk_count; i++) {

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