> From: JULIAN GARDNER <joo...@btinternet.com>
>To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
>Sent: Tuesday, 23 September 2014, 13:37
>Subject: Re: [FFmpeg-devel] Regression problem
>
>
>----- Original Message -----
>> From: Michael Niedermayer <michae...@gmx.at>
>> To: FFmpeg development discussions and patches <ffmpeg-devel@ffmpeg.org>
>> Cc:
>> Sent: Tuesday, 23 September 2014, 12:24
>> Subject: Re: [FFmpeg-devel] Regression problem
>>
>> On Tue, Sep 23, 2014 at 09:27:57AM +0100, JULIAN GARDNER wrote:
>>> I seem to be having problems using the ff_load_image routine, with a git
>> pulled build from the beginning of the week, which used to work but is now
>> giving me "failed to decode image file", and this is on a png that has
>> been in use for over a year,
>>>
>>> The code is is based on VSRC_TESTSRC with an addition call to this code
>>>
>>> static int load_image(uint8_t **image_data, int *w, int *h, int *stride,
>>> const char *filename, void *log_ctx)
>>> {
>>> int ret;
>>> enum AVPixelFormat pix_fmt;
>>> uint8_t *src_data[4], *dst_data[4];
>>> int src_linesize[4], dst_linesize[4];
>>>
>>> av_log( NULL, AV_LOG_WARNING, "load_image %s\n",
>> filename);
>>>
>>> /* load image from file */
>>> if ((ret = ff_load_image(src_data, src_linesize, w, h, &pix_fmt,
>> filename, log_ctx)) < 0)
>>> return ret;
>>>
>>> if ((ret = ff_scale_image(dst_data, dst_linesize, *w, *h, PIXEL_FORMAT,
>>> src_data, src_linesize, *w, *h, pix_fmt,
>>> log_ctx)) < 0)
>>> goto end;
>>>
>>> *stride = dst_linesize[0];
>>>
>>> /* copy image_data to a newly allocated array */
>>> *image_data = av_malloc(*stride * *h);
>>> if (!*image_data)
>>> ret = AVERROR(ENOMEM);
>>> av_image_copy_plane(*image_data, *stride, dst_data[0],
>>>dst_linesize[0],
>> *w*4, *h);
>>> end:
>>> av_free(src_data[0]);
>>> av_free(dst_data[0]);
>>>
>>> return ret;
>>> }
>>>
>>>
>>> This used to work but now as I have said give the error message about not
>> being able to decode
>>>
>>> There is nothing in the log, even with as "-loglevel debug"
>>>
>>> load_image /home/encoder/images/Logo640x360.png
>>> [AVIOContext @ 0x7fdcf8002580] Statistics: 3713 bytes read, 0 seeks
>>> [libx264 @ 0x2c63320] frame= 322 QP=12.00 NAL=2 Slice:P Poc:144 I:15
>> P:524 SKIP:381 size=14355 bytes
>>> [Parsed_osd_0 @ 0x2c3b200] Failed to decode image from file
>>> [Parsed_osd_0 @ 0x2c3b200] Error loading image file
>> '/home/encoder/images/Logo640x360.png'
>>
>> how can this be reproduced ?
>> can you share the png file ?
>>
>
>It happens with any png, i just created a simple 100x100 png in gimp and this
>also fails
>
>joolz
>
Started debgging the code and found that the return from the pngdec.c
decode_frame is ok, data decoded and got_packet set to 1, image size if correct.
So looks like it is somewhere further down the chain.
joolz
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