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avcodec: remove the Zork PCM encoder.

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The Zork PCM decoder does not decode the 1 sample we have correctly, therefore
the encoder based on the decoder is also incorrect. There is no good reason to
keep the encoder.
pull/2/head
Justin Ruggles 13 years ago
parent 67a3b67c71
commit 85579b6381
6 changed files with 3 additions and 18 deletions
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  1. 2
      doc/general.texi
  2. 1
      libavcodec/Makefile
  3. 2
      libavcodec/allcodecs.c
  4. 11
      libavcodec/pcm.c
  5. 1
      tests/codec-regression.sh
  6. 4
      tests/ref/acodec/pcm

2
doc/general.texi
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@ -666,7 +666,7 @@ following image formats are supported:
@item PCM unsigned 24-bit little-endian @tab X @tab X
@item PCM unsigned 32-bit big-endian @tab X @tab X
@item PCM unsigned 32-bit little-endian @tab X @tab X
@item PCM Zork @tab X @tab X
@item PCM Zork @tab @tab X
@item QCELP / PureVoice @tab @tab X
@item QDesign Music Codec 2 @tab @tab X
@tab There are still some distortions.

1
libavcodec/Makefile
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@ -483,7 +483,6 @@ OBJS-$(CONFIG_PCM_U32BE_ENCODER) += pcm.o
OBJS-$(CONFIG_PCM_U32LE_DECODER) += pcm.o
OBJS-$(CONFIG_PCM_U32LE_ENCODER) += pcm.o
OBJS-$(CONFIG_PCM_ZORK_DECODER) += pcm.o
OBJS-$(CONFIG_PCM_ZORK_ENCODER) += pcm.o
OBJS-$(CONFIG_ADPCM_4XM_DECODER) += adpcm.o adpcm_data.o
OBJS-$(CONFIG_ADPCM_ADX_DECODER) += adxdec.o

2
libavcodec/allcodecs.c
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@ -313,7 +313,7 @@ void avcodec_register_all(void)
REGISTER_ENCDEC (PCM_U24LE, pcm_u24le);
REGISTER_ENCDEC (PCM_U32BE, pcm_u32be);
REGISTER_ENCDEC (PCM_U32LE, pcm_u32le);
REGISTER_ENCDEC (PCM_ZORK , pcm_zork);
REGISTER_DECODER (PCM_ZORK , pcm_zork);
/* DPCM codecs */
REGISTER_DECODER (INTERPLAY_DPCM, interplay_dpcm);

11
libavcodec/pcm.c
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@ -171,15 +171,6 @@ static int pcm_encode_frame(AVCodecContext *avctx,
memcpy(dst, samples, n*sample_size);
dst += n*sample_size;
break;
case CODEC_ID_PCM_ZORK:
srcu8 = data;
for (; n > 0; n--) {
v = *srcu8++;
if (v < 128)
v = 128 - v;
*dst++ = v;
}
break;
case CODEC_ID_PCM_ALAW:
for(;n>0;n--) {
v = *samples++;
@ -518,4 +509,4 @@ PCM_CODEC (CODEC_ID_PCM_U24BE, AV_SAMPLE_FMT_S32, pcm_u24be, "PCM unsigned 24-b
PCM_CODEC (CODEC_ID_PCM_U24LE, AV_SAMPLE_FMT_S32, pcm_u24le, "PCM unsigned 24-bit little-endian");
PCM_CODEC (CODEC_ID_PCM_U32BE, AV_SAMPLE_FMT_S32, pcm_u32be, "PCM unsigned 32-bit big-endian");
PCM_CODEC (CODEC_ID_PCM_U32LE, AV_SAMPLE_FMT_S32, pcm_u32le, "PCM unsigned 32-bit little-endian");
PCM_CODEC (CODEC_ID_PCM_ZORK, AV_SAMPLE_FMT_U8, pcm_zork, "PCM Zork");
PCM_DECODER(CODEC_ID_PCM_ZORK, AV_SAMPLE_FMT_U8, pcm_zork, "PCM Zork");

1
tests/codec-regression.sh
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@ -357,6 +357,5 @@ do_audio_enc_dec au flt pcm_f32be
do_audio_enc_dec wav flt pcm_f32le
do_audio_enc_dec au dbl pcm_f64be
do_audio_enc_dec wav dbl pcm_f64le
do_audio_enc_dec wav s16 pcm_zork
do_audio_enc_dec 302 s16 pcm_s24daud "-ac 6 -ar 96000"
fi

4
tests/ref/acodec/pcm
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@ -62,10 +62,6 @@ ba17c6d1a270e1333e981f239bf7eb45 *./tests/data/acodec/pcm_f64le.wav
4233680 ./tests/data/acodec/pcm_f64le.wav
64151e4bcc2b717aa5a8454d424d6a1f *./tests/data/pcm.acodec.out.wav
stddev: 0.00 PSNR:999.99 MAXDIFF: 0 bytes: 1058400/ 1058400
ebd38ed390ebdefe0bdf00d21bf12c6b *./tests/data/acodec/pcm_zork.wav
529258 ./tests/data/acodec/pcm_zork.wav
7b02646acdd063650bb3ebc444543ace *./tests/data/pcm.acodec.out.wav
stddev: 633.11 PSNR: 40.30 MAXDIFF:32768 bytes: 1058400/ 1058400
8168a5c1343553ef027541830f2cb879 *./tests/data/acodec/pcm_s24daud.302
10368730 ./tests/data/acodec/pcm_s24daud.302
f552afadfdfcd6348a07095da6382de5 *./tests/data/pcm.acodec.out.wav

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