generic-library/ffmpeg
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croping patch by (talus25 at speakeasy dot net) with fixes from atmos & me

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Originally committed as revision 888 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer
2002-09-01 07:19:38 +00:00
parent d3b3efe368
commit ab6d194a38
3 changed files with 125 additions and 15 deletions
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87
ffmpeg.c
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@@ -79,6 +79,10 @@ static AVInputFormat *file_iformat;
static AVOutputFormat *file_oformat;
static int frame_width = 160;
static int frame_height = 128;
static int frame_topBand = 0;
static int frame_bottomBand = 0;
static int frame_leftBand = 0;
static int frame_rightBand = 0;
static int frame_rate = 25 * FRAME_RATE_BASE;
static int video_bit_rate = 200*1000;
static int video_bit_rate_tolerance = 4000*1000;
@@ -821,9 +825,11 @@ static int av_encode(AVFormatContext **output_files,
ost->pict_tmp.linesize[1] = codec->width / 2;
ost->pict_tmp.linesize[2] = codec->width / 2;
ost->img_resample_ctx = img_resample_init(
ost->img_resample_ctx = img_resample_full_init(
ost->st->codec.width, ost->st->codec.height,
ist->st->codec.width, ist->st->codec.height);
ist->st->codec.width, ist->st->codec.height,
frame_topBand, frame_bottomBand,
frame_leftBand, frame_rightBand);
}
ost->encoding_needed = 1;
ist->decoding_needed = 1;
@@ -1382,6 +1388,79 @@ void opt_frame_rate(const char *arg)
frame_rate = (int)(strtod(arg, 0) * FRAME_RATE_BASE);
}
void opt_frame_crop_top(const char *arg)
{
frame_topBand = atoi(arg);
if (frame_topBand < 0) {
fprintf(stderr, "Incorrect top crop size\n");
exit(1);
}
if ((frame_topBand % 2) != 0) {
fprintf(stderr, "Top crop size must be a multiple of 2\n");
exit(1);
}
if ((frame_topBand) >= frame_height){
fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
exit(1);
}
frame_height -= frame_topBand;
}
void opt_frame_crop_bottom(const char *arg)
{
frame_bottomBand = atoi(arg);
if (frame_bottomBand < 0) {
fprintf(stderr, "Incorrect bottom crop size\n");
exit(1);
}
if ((frame_bottomBand % 2) != 0) {
fprintf(stderr, "Bottom crop size must be a multiple of 2\n");
exit(1);
}
if ((frame_bottomBand) >= frame_height){
fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
exit(1);
}
frame_height -= frame_bottomBand;
}
void opt_frame_crop_left(const char *arg)
{
frame_leftBand = atoi(arg);
if (frame_leftBand < 0) {
fprintf(stderr, "Incorrect left crop size\n");
exit(1);
}
if ((frame_leftBand % 2) != 0) {
fprintf(stderr, "Left crop size must be a multiple of 2\n");
exit(1);
}
if ((frame_leftBand) >= frame_width){
fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
exit(1);
}
frame_width -= frame_leftBand;
}
void opt_frame_crop_right(const char *arg)
{
frame_rightBand = atoi(arg);
if (frame_rightBand < 0) {
fprintf(stderr, "Incorrect right crop size\n");
exit(1);
}
if ((frame_rightBand % 2) != 0) {
fprintf(stderr, "Right crop size must be a multiple of 2\n");
exit(1);
}
if ((frame_rightBand) >= frame_width){
fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
exit(1);
}
frame_width -= frame_rightBand;
}
void opt_frame_size(const char *arg)
{
parse_image_size(&frame_width, &frame_height, arg);
@@ -2135,6 +2214,10 @@ const OptionDef options[] = {
{ "b", HAS_ARG, {(void*)opt_video_bitrate}, "set video bitrate (in kbit/s)", "bitrate" },
{ "r", HAS_ARG, {(void*)opt_frame_rate}, "set frame rate (in Hz)", "rate" },
{ "s", HAS_ARG, {(void*)opt_frame_size}, "set frame size (WxH or abbreviation)", "size" },
{ "croptop", HAS_ARG, {(void*)opt_frame_crop_top}, "set top crop band size (in pixels)", "size" },
{ "cropbottom", HAS_ARG, {(void*)opt_frame_crop_bottom}, "set bottom crop band size (in pixels)", "size" },
{ "cropleft", HAS_ARG, {(void*)opt_frame_crop_left}, "set left crop band size (in pixels)", "size" },
{ "cropright", HAS_ARG, {(void*)opt_frame_crop_right}, "set right crop band size (in pixels)", "size" },
{ "g", HAS_ARG | OPT_EXPERT, {(void*)opt_gop_size}, "set the group of picture size", "gop_size" },
{ "intra", OPT_BOOL | OPT_EXPERT, {(void*)&intra_only}, "use only intra frames"},
{ "vn", OPT_BOOL, {(void*)&video_disable}, "disable video" },